Autonomic Nervous System

Increase Relaxation with Focused Meditation while Increasing Activation with Open Monitoring Meditation

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Increase Relaxation with Focused Meditation while Increasing Activation with Open Monitoring Meditation

 

By John M. de Castro, Ph.D.

 

“Mindfulness meditation consists of focused attention meditation (FAM) and open monitoring meditation (OMM), both of which reduce activation of the default mode network (DMN) and mind-wandering.” – Masahiro Fujino

 

Meditation training has been shown to improve health and well-being. It has also been found to be effective for a large array of medical and psychiatric conditions, either stand-alone or in combination with more traditional therapies. As a result, meditation training has been called the third wave of therapies. One problem with understanding meditation effects is that there are, a wide variety of meditation techniques and it is not known which work best for affecting different psychological areas.

 

There are a number of different types of meditation. Classically they’ve been characterized on a continuum with the degree and type of attentional focus. In focused attention meditation, the individual practices paying attention to a single meditation object, often the breath. In open monitoring meditation, the individual opens up awareness to everything that’s being experienced including thoughts regardless of its origin. Whether these different meditation types produce different effects has not been extensively studied.

 

In today’s Research News article “Differential Effects of Focused Attention and Open Monitoring Meditation on Autonomic Cardiac Modulation and Cortisol Secretion.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8320390/ ) Ooishi and colleagues recruited healthy adult meditation novices and had them engage in 30 minutes of either focused attention meditation, focusing on the breath, or open monitoring meditation in randomized order separated by 2 hours. They were measured before and after each meditation for heart rate, heart rate variability, respiration rate, and salivary cortisol.

 

They found that focused attention meditation and open monitoring meditation both reduced respiration rates but produced different physiological responses. Analysis of the heart rate variability data revealed changes in the autonomic nervous system’s components of the sympathetic and parasympathetic nervous systems. These analyses suggested that focused attention meditation produced an increase in parasympathetic activation but not sympathetic activation while open monitoring meditation produced an increase in sympathetic activation but not parasympathetic activation and reduced salivary cortisol levels.

 

These findings suggest that focused attention meditation is associated with physiological relaxation while open monitoring meditation is associated with physiological activation. This fits with the findings that focused attention meditation produces greater reductions in anxiety compared to open monitoring meditation. But it needs to be kept in mind that the study employed brief, one-time meditations by meditation naïve participants. It is possible that focused attention meditation is simpler and produces less stress in naive participants while open monitoring meditation is more difficult to learn requiring greater effort and stress. It is clear that this work needs to be replicated with longer term meditation practice.

 

So, increase relaxation with focused meditation while increasing activation with open monitoring meditation.

 

“Focused attention meditation improves focus.  . . an increased consciousness of bodily sensations. The open-monitoring meditation . .  increases our ability to resolve conflicts.  Open Monitoring meditation increases creativity by improving divergent and convergent thinking.” – Daily Meditation

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Ooishi, Y., Fujino, M., Inoue, V., Nomura, M., & Kitagawa, N. (2021). Differential Effects of Focused Attention and Open Monitoring Meditation on Autonomic Cardiac Modulation and Cortisol Secretion. Frontiers in Physiology, 12, 675899. https://doi.org/10.3389/fphys.2021.675899

 

Abstract

Mindfulness-based interventions (MBIs) have been used widely as a useful tool for the alleviation of various stress-related symptoms. However, the effects of MBIs on stress-related physiological activity have not yet been ascertained. MBIs primarily consist of focused-attention (FA) and open-monitoring (OM) meditation. Since differing effects of FA and OM meditation on brain activities and cognitive tasks have been mentioned, we hypothesized that FA and OM meditation have also differing effects on stress-related physiological activity. In this study, we examined the effects of FA and OM meditation on autonomic cardiac modulation and cortisol secretion. Forty-one healthy adults (aged 20–46 years) who were meditation novices experienced 30-min FA and OM meditation tasks by listening to instructions. During resting- and meditation-states, electrocardiogram transducers were attached to participants to measure the R-R interval, which were used to evaluate heart rate (HR) and perform heart rate variability (HRV) analyses. Saliva samples were obtained from participants pre- and post-meditation to measure salivary cortisol levels. Results showed that FA meditation induced a decrease in HR and an increase in the root mean square of successive differences (rMSDD). In contrast, OM meditation induced an increase in the standard deviation of the normal-to-normal interval (SDNN) to rMSSD ratio (SDNN/rMSSD) and a decrease in salivary cortisol levels. These results suggest that FA meditation elevates physiological relaxation, whereas OM meditation elevates physiological arousal and reduces stress.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8320390/

 

Improve Psychological, Physiological, and Epigenetic Markers of Type 2 Diabetes with Mind-Body Practices

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Improve Psychological, Physiological, and Epigenetic Markers of Type 2 Diabetes with Mind-Body Practices

 

By John M. de Castro, Ph.D.

 

“Diabetes, like many other chronic diseases, can also affect the mind. Similarly the mind has great power to influence the body.” – Diabetes UK

 

Diabetes is a major health issue. It is estimated that 30 million people in the United States and nearly 600 million people worldwide have diabetes and the numbers are growing. Type II Diabetes results from a resistance of tissues, especially fat tissues, to the ability of insulin to promote the uptake of glucose from the blood. As a result, blood sugar levels rise producing hyperglycemia. Diabetes is heavily associated with other diseases such as cardiovascular disease, heart attacks, stroke, blindness, kidney disease, and circulatory problems leading to amputations. As a result, diabetes doubles the risk of death of any cause compared to individuals of the same age without diabetes.

 

Type 2 diabetes is largely preventable. One of the reasons for the increasing incidence of Type 2 Diabetes is its association with overweight and obesity which is becoming epidemic in the industrialized world. A leading cause of this is a sedentary life style. Current treatments for Type 2 Diabetes focus on diet, exercise, and weight control. Recently, mindfulness practices have been shown to be helpful in managing diabetes. Mindful movement practices such as Tai Chi and Qigong  and yoga are mindfulness practices that are also gentle exercises. There is accumulating research on the effectiveness of these mind-body practices for the treatment of Type 2 Diabetes. So, it makes sense to examine what has been learned.

 

In today’s Research News article “Changes Induced by Mind-Body Intervention Including Epigenetic Marks and Its Effects on Diabetes.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865217/ ) Yang and colleagues review and summarize the published research studies of the effects of mind-body practices on the symptoms of Type 2 Diabetes including epigenetic markers.

 

They report that moving meditation practices such as Tai Chi and Qigong  and yoga have been shown to significantly improve blood glucose, HbA1c, postprandial blood glucose, total cholesterol, and both low-density and high-density lipoprotein cholesterol. Mindfulness meditation has been shown to significantly improve HbA1c, diabetes-related distress, depression, and stress. In addition, mind-body interventions produce epigenetic changes reflected in DNA methylation modification. More study is needed but these epigenetic changes may underlie the improvements in Type 2 Diabetes produced by mind-body interventions.

 

Mind-body interventions have been repeatedly demonstrated to significantly reduce depression, anxiety and stress. These psychological states tend to aggravate Type 2 Diabetes. Since mind-mind-body practices reduce depression, anxiety and stress, they produce improvements in the symptoms of diabetes. In addition, mind-body practices produce physiological changes that can improve the symptoms of Type 2 Diabetes. These include activation of the parasympathetic (relaxation) nervous system, lower stress hormone (cortisol) secretion, reduced inflammation, and even reduced age based physiological changes.

 

These are remarkable findings that suggest that mind-body practices are effective in producing psychological and physiological changes that are very beneficial for the relief of the symptoms of Type 2 Diabetes. These benefits are reflected in changes on the epigenetic level that might ultimately be responsible for the benefits. Clearly, mind-body practices should be incorporated into Type 2 Diabetes treatment programs.

 

So, improve psychological, physiological, and epigenetic markers of type 2 diabetes with mind-body practices.

 

“meditation strategies can be useful adjunctive techniques to lifestyle modification and pharmacological management of diabetes and help improve patient wellbeing.” Gagan Priya

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

Yang, H. J., Koh, E., Sung, M. K., & Kang, H. (2021). Changes Induced by Mind-Body Intervention Including Epigenetic Marks and Its Effects on Diabetes. International journal of molecular sciences, 22(3), 1317. https://doi.org/10.3390/ijms22031317

 

Abstract

Studies have evidenced that epigenetic marks associated with type 2 diabetes (T2D) can be inherited from parents or acquired through fetal and early-life events, as well as through lifelong environments or lifestyles, which can increase the risk of diabetes in adulthood. However, epigenetic modifications are reversible, and can be altered through proper intervention, thus mitigating the risk factors of T2D. Mind–body intervention (MBI) refers to interventions like meditation, yoga, and qigong, which deal with both physical and mental well-being. MBI not only induces psychological changes, such as alleviation of depression, anxiety, and stress, but also physiological changes like parasympathetic activation, lower cortisol secretion, reduced inflammation, and aging rate delay, which are all risk factors for T2D. Notably, MBI has been reported to reduce blood glucose in patients with T2D. Herein, based on recent findings, we review the effects of MBI on diabetes and the mechanisms involved, including epigenetic modifications.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865217/

Improve Autonomic Nervous System Function Reducing Stress with Online Mindfulness Training

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Improve Autonomic Nervous System Function Reducing Stress with Online Mindfulness Training

 

By John M. de Castro, Ph.D.

 

“Research has found that meditation can positively affect a measure of heart health known as heart rate variability (HRV). HRV reflects how quickly your heart makes small changes in the time interval between each heartbeat. A high HRV is a sign of healthier heart. . . With regular meditation, you may be able to raise your HRV. – Harvard Mens Health

 

In our lives we are confronted with a variety of situations and environments. In order to successfully navigate these differing situations, we must be able to adapt and self-regulate. The Autonomic Nervous System (ANS) is designed to adapt physiologically to the varying demands on us. It is composed of 2 divisions; the sympathetic division underlies activation, including increases in heart rate and blood pressure, while the parasympathetic division underlies relaxation, including decreases in heart rate and blood pressure. A measure of the balance between these systems is provided by the variability of the heart rate.

 

Heart Rate Variability (HRV) refers to the change in the time intervals between consecutive heart beats. Higher levels of HRV are indicative of flexibility in the Autonomic Nervous System and are associated with adaptability to varying environments. Mindfulness has been associated with psychological flexibility and a greater ability to adapt appropriately to differing situations. Indeed, mindfulness practice improves Heart Rate Variability (HRV). It makes sense to explore the ability of real world mindfulness training with an online app to improve autonomic nervous system function as measured by heart rate variability.

 

In today’s Research News article “Heart rate variability is enhanced during mindfulness practice: A randomized controlled trial involving a 10-day online-based mindfulness intervention.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7746169/ ) Kirk and Axelsen recruited healthy adults online and randomly assigned them to either a mindfulness, music, or no treatment control group. The mindfulness group received mindfulness training with a smartphone app (Headspace) while the music group listened to music also with a smartphone app for 10 days. Before and after training they were measured for mindfulness, sleep quality, perceived stress, and respiration rate and had their electrocardiogram measured to determine heart rate and heart rate variability.

 

They found that in comparison to baseline and the no-treatment control group, the mindfulness training group had significantly greater mindfulness and sleep quality and significantly lower perceived stress. Although the music group also had a reduction in perceive stress, the mindfulness group had a significantly greater reduction.

 

They found that during the mindfulness and music sessions there were significant increases in heart rate variability but only during the mindfulness sessions was there a significant reduction in respiration rate. Outside of the sessions, they found that the mindfulness group and not the music or control groups had significant increases in heart rate variability during the daytime, nighttime, and during sleep.

 

This was a well-controlled study in that an active as well as passive control conditions were present. So, clear conclusions about causation can be reached. The results suggest that mindfulness trained with a smartphone app increases heart rate variability both acutely, during the sessions, and chronically, outside of the training sessions across the day including during sleep. These increases in heart rate variability suggest an increase in parasympathetic activity and a decrease in sympathetic activity. These reflect an improved balance and relaxation in the autonomic nervous system. These increases in heart rate variability are physiological measures reflecting the psychological measures of decreased perceived stress and improved sleep quality. Hence, online mindfulness training of relatively short duration is capable of improving both physiological and psychological indicators of stress and improving sleep.

 

So, improve autonomic nervous system function reducing stress with online mindfulness training.

 

“Generally speaking, a low and irregular HRV indicates a stressed state and a high and regular HRV indicates a relaxed state such as mindfulness.” – Mindfio

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Kirk, U., & Axelsen, J. L. (2020). Heart rate variability is enhanced during mindfulness practice: A randomized controlled trial involving a 10-day online-based mindfulness intervention. PloS one, 15(12), e0243488. https://doi.org/10.1371/journal.pone.0243488

 

Abstract

Objectives

The goal of the present study was to probe the effects of mindfulness practice in a naturalistic setting as opposed to a lab-based environment in the presence of continuous heart rate variability (HRV) measurements. The specific experimental goals were to examine the effects of a brief 10-day online-based mindfulness intervention on both chronic and acute HRV responses.

Method

We conducted a fully randomized 10-day longitudinal trial of mindfulness practice, explicitly controlling for practice effects with an active-control group (music listening) and a non-intervention control group. To assess chronic cardiovascular effects, we asked participants in the 3 groups to complete 2-day HRV pre- and post-intervention measurement sessions. Using this experimental setup enabled us to address training effects arising from mindfulness practice to assess physiological impact on daytime as well as nighttime (i.e. assessing sleep quality) on the underlying HRV response. To assess acute cardiovascular effects, we measured HRV in the 2 active intervention groups during each of the 10 daily mindfulness or music sessions. This allowed us to track the development of purported training effects arising from mindfulness practice relative to the active-control intervention in terms of changes in the HRV slope over the 10-day time-course.

Results

Firstly, for the acute phase we found increased HRV during the daily practice sessions in both the mindfulness and active-control group indicating that both interventions were effective in decreasing acute physiological stress. Secondly, for the chronic phase we found increased HRV in both the day- and nighttime indicating increased sleep quality, specifically in the mindfulness group.

Conclusion

These results suggest causal effects in both chronic and acute phases of mindfulness practice in formerly naïve subjects and provides support for the argument that brief online-based mindfulness interventions exert positive impact on HRV.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7746169/

 

Improve Autonomic Nervous System Function with Yoga

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Improve Autonomic Nervous System Function with Yoga

 

By John M. de Castro, Ph.D.

 

“Among its many beneficial effects, yoga has been shown to increase strength, flexibility, and balance; enhance immune function; lower blood sugar and cholesterol levels; and improve psychological well-being.” – Timothy McCall

 

There is an accumulating volume of research findings to demonstrate that Mind-body practices have highly beneficial effects on the health and well-being of humans. These include yoga, tai chi, and qigong, among many others. Because of their proven benefits the application of these practices to relieving human suffering has skyrocketed. Yoga practice has been shown to have a large number of beneficial effects on the psychological, emotional, and physical health of the individual and is helpful in the treatment of mental and physical illness.

 

One way that these Yoga may have their beneficial effects is by providing balance in the autonomic nervous system. The sympathetic division underlies activation while the parasympathetic division underlies relaxation. When these divisions are out of balance the individual may be overly stressed or overly sedentary. Appropriate balance is important for health and well-being. A measure of balance is provided by the parasympathetic produced baroreflex. It regulates blood pressure fluctuations.

 

In today’s Research News article “Autonomic Tone and Baroreflex Sensitivity during 70° Head-up Tilt in Yoga Practitioners.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735502/ ) Anasuya and colleagues recruited adults aged 20-50 who were aged matched and either yoga-naïve or trained experienced yoga practitioners. The participants underwent a 70 degree head up tilt. “Participants lay on the table and the table is tilted from a supine position to an angle of 70° at a speed of ~2.3°/s. Each subject was held at 70° HUT position for 5 min.” They were measured before during and after the tilt for blood pressure, respiration, respiratory carbon dioxide, and electrocardiogram (ECG).

 

They found that at rest the yoga group had significantly lower respiration rate at rest and significantly higher respiratory carbon dioxide at rest and also during the tilt. They also found that during the tilt the yoga practitioners had a significantly larger baroreceptor response, that is decrease in blood pressure, and a significantly larger increase in heart rate variability.

 

Both increases in the baroreceptor sensitivity and heart rate variability are indicative of increased activity on the Vagus nerve producing increased parasympathetic (relaxation) activity and decreased sympathetic (activation) activity in the autonomic nervous system. Hence, yoga practice produces a greater relaxation response in the practitioners at rest and when challenged with a tilt. This suggests that yoga practice alter the autonomic nervous system to produce a larger parasympathetic dominance and thereby greater ability to physiologically relax. In essence this reduces stress responses. Such improvements in the practitioner’s ability to deal with stress may underlie, at least in part, many of the health benefits of yoga practice.

 

So, Improve Autonomic Nervous System Function with Yoga.

 

“Yoga is a practice which helps regulate the nervous system. Yoga trains our mind and body to find a healthy balance within our nervous system, or in other words to help our bodies find homeostasis.’ – Anne Spear

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are a also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Anasuya, B., Deepak, K. K., & Jaryal, A. K. (2020). Autonomic Tone and Baroreflex Sensitivity during 70° Head-up Tilt in Yoga Practitioners. International journal of yoga, 13(3), 200–206. https://doi.org/10.4103/ijoy.IJOY_29_20

 

Abstract

Introduction:

The intervention of yoga was shown to improve the autonomic conditioning in humans evident from the enhancement of parasympathetic activity and baroreflex sensitivity (BRS). From the documented health benefits of yoga, we hypothesized that the experience of yoga may result in adaptation to the orthostatic stress due to enhanced BRS.

Aim:

To decipher the effects of yoga in the modulation of autonomic function during orthostatic challenge.

Materials and Methods:

This was a comparative study design conducted in autonomic function test lab, of the Department of Physiology, All India Institute of Medical Sciences, New Delhi, India. Heart rate variability (HRV), blood pressure variability, and BRS were analyzed on forty naïve to yoga (NY) subjects and forty yoga practitioners with an average age of 31.08 ± 7.31 years and 29.93 ± 7.57 years, respectively. All participants were healthy. Seventy degrees head up tilt (HUT) was used as an intervention to evaluate the cardiovascular variability during orthostatic challenge.

Results:

During HUT, the R-R interval (P = 0.042), root mean square of succesive R-R interval differences (RMSSD) (P = 0.039), standard deviation of instantaneous beat-to-beat R-R interval variability (SD1) (P = 0.039) of HRV, and sequence BRS (P = 0.017) and α low frequency of spectral BRS (P = 0.002) were higher in the yoga group. The delta decrease in RRI (P = 0.033) and BRS (P < 0.01) was higher in the yoga group than the NY group.

Conclusion:

The efferent vagal activity and BRS were higher in yoga practitioners. The delta change (decrease) in parasympathetic activity and BRS was higher, with relatively stable systolic blood pressure indicating an adaptive response to orthostatic challenge by the yoga practitioners compared to the NY group.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735502/

 

Reduce Physiological Indicators of Stress with Mindfulness

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Reduce Physiological Indicators of Stress with Mindfulness

 

By John M. de Castro, Ph.D.

 

“Learning how to accept your present-moment experience is really important for reducing stress,” – Emily Lindsay

 

Mindfulness training has been shown to be effective in improving physical and psychological health. One reason for these benefits is that mindfulness training improves the individual’s physical and psychological reactions to stress. Stress is an integral part of life, that is actually essential to the health of the body. In moderation, it is healthful, strengthening, and provides interest and fun to life. If stress, is high or is prolonged, however, it can be problematic. It can significantly damage our physical and mental health and even reduce our longevity, leading to premature deaths.

 

It is important that we develop methods to either reduce or control high or prolonged stress or reduce our responses to it. Mindfulness practices have been found routinely to reduce the psychological and physiological responses to stress. and this appears to be important for health. So, it is important to study the mechanisms by which mindfulness reduces stress.

 

In today’s Research News article “Mindfulness-Based Student Training Leads to a Reduction in Physiological Evaluated Stress.” (See summary below or view the full text of the study at: https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00645/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1332835_69_Psycho_20200519_arts_A), Voss and colleagues recruited university students and randomly assigned them to receive either no-treatment or a once a week for 90 minutes, 8-week mindfulness training program based upon Mindfulness-Based Stress Reduction (MBSR). The program contained meditation, body scan, yoga, and discussion and daily 20-min home practice. They were measured before and after training with physiological indicators of autonomic nervous system activity with electrocardiogram (ECG), finger-pulse plethysmography, and respiration.

 

They found that in comparison to the baseline and the no-treatment control participants the participants who received mindfulness training had significantly lower blood pressure pulse wave variability in both their systolic and diastolic blood pressures. These results suggest that mindfulness training resulted in improved regulation of the autonomic nervous system suggesting lower physiological arousal and greater peripheral physiological relaxation. This normally suggests a dominance of the parasympathetic (relaxation) component of the system as opposed to the sympathetic (arousal) component. The study suggests that the mindfulness training produced lower levels of physiological indicators of stress.

 

Prior research has established the mindfulness training produces lower psychological responses to stress. It has also shown that mindfulness training produces higher levels of heart rate variability, another measure of parasympathetic predominance and improved autonomic regulation. So, the present study, using different physiological measures, also showed that mindfulness training improves autonomic regulation suggestive of greater ability to respond to stress with lower physiological reactivity.

 

The importance of the observed improvements in autonomic regulation should not be underestimated. The greater ability to respond adaptively to stress is thought to underlie many of the improvements in mental and physical health produced by mindfulness training. In other words, the physiological indicators of reduced stress responsivity observed here, are indicators of the improvements in the individual’s ability to withstand stress and thereby maintain their health and well-being

 

So, reduce physiological indicators of stress with mindfulness.

 

“Mindfulness can lead to less intense stress responses. This has many health benefits, such as lowering your blood pressure and strengthening your immune system.” – Healthy Aging

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Voss A, Bogdanski M, Langohr B, Albrecht R and Sandbothe M (2020) Mindfulness-Based Student Training Leads to a Reduction in Physiological Evaluated Stress. Front. Psychol. 11:645. doi: 10.3389/fpsyg.2020.00645

 

Background and Objective: In today’s fast-paced modern lifestyle, chronic stress has become a serious issue with potential consequences for our physical and mental health. The concept of mindfulness and its derived Mindfulness-Based Stress Reduction (MBSR) program is considered to be an effective stress management technique for patients as well as for healthy persons. The effects of MBSR interventions on their participants have been subject of previous research, especially with regard to psychological or social science approaches using self-reports and questionnaires. In contrast, medical investigations in this field have been less frequent and often somehow limited, for example, addressing only absolute (discrete) mean values for heart rate or blood pressure.

Methods: In this study, we have evaluated a Mindfulness Based Student Training program (MBST) by applying methods of biosignal analysis to examine its impact on the training participants’ autonomic regulation. This intervention program included classical MBSR elements but was adapted to suit the normal daily needs of university students. We obtained the electrocardiogram, finger-pulse plethysmography, and respiration activity from students participating in either the intervention group (IGR, 38 subjects) or a passive control group (CON, 35 subjects) prior to and after 8 weeks of MBST intervention.

Results: When comparing various indices from heart rate variability, pulse wave variability, and respiration in linear and nonlinear domains, significant changes in the autonomic regulation were observed for the IGR group after 8 weeks of MBST.

Conclusion: The results indicate a reduced stress level exclusively for the intervention participants, and therefore, we assume a health benefit from the MBST program.

https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00645/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1332835_69_Psycho_20200519_arts_A

 

Andreas.Voss@eah-jena.de

 

Improve Self-Compassion with Psychophysiological Flexibility and Mindfulness

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Improve Self-Compassion with Psychophysiological Flexibility and Mindfulness

By John M. de Castro, Ph.D.

 

“self-compassion is strongly associated with emotional wellbeing, coping with life challenges, lower levels of anxiety and depression, healthy habits such as diet and exercise, and more satisfying personal relationships. It is an inner strength that enables us to be more fully human—to acknowledge our shortcomings, learn from them, and make necessary changes with an attitude of kindness and self-respect.” – Greater Good Science Center

 

One of the more remarkable aspects of Western culture is that in general people do not like themselves. We are constantly comparing ourselves to others and since there can only one best, virtually everyone falls short. So, we constantly criticize ourselves for not being the smartest, the swiftest, the strongest, the most liked, the most handsome or beautiful. If there wasn’t something wrong with us, then we would be the best. As a result, we become focused and obsessed with our flaws. This can lead to anxiety and worry.

 

Mindfulness promotes experiencing and accepting ourselves as we are, which is a direct antidote to seeing ourselves in comparison to others and as we wish to be. In other words, mindfulness promotes self-compassion. Self-compassion involves being warm and understanding about ourselves rather than self-criticism. If we have that attitude, we will like ourselves more and suffer less. So, it is important to study the mindfulness and self-compassion and their relationships with the ability to regulate emotional arousal.

 

In today’s Research News article “Is Dispositional Self-Compassion Associated With Psychophysiological Flexibility Beyond Mindfulness? An Exploratory Pilot Study.” (See summary below or view the full text of the study at: https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00614/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1302118_69_Psycho_20200416_arts_A), Svendsen and colleagues recruited college students and had them complete scales measuring self-compassion, mindfulness, anxiety, and rumination. They also had their cardiac function measured at rest with an electrocardiogram (ECG). This was used to calculate the vagally mediated heart rate variability as a measure of psychophysiological flexibility. It measures the interplay between the parasympathetic and sympathetic branches of the autonomic nervous system, with higher heart rate variability signaling parasympathetic predominance, usually indicating relaxation.

 

Employing regression analysis, they found that the higher the levels of self-compassion the higher the levels of mindfulness and psychophysiological flexibility. They also found that both higher levels of mindfulness and also self-compassion the lower the levels of anxiety and rumination (worry). So, mindfulness is related to self-compassion and lower anxiety and rumination and self-compassion is related to mindfulness and psychophysiological flexibility and lower anxiety and rumination.

 

The findings are correlative and as such causation cannot be determined. But they show that mindfulness is significantly related to self-compassion and both are related to better mental health. In prior manipulative studies, it has been demonstrated that mindfulness causes increased self-compassion and decreased anxiety and rumination. So, the present results likely reflect causal connections.

 

The results also demonstrated that self-compassion has the strongest relationship with psychophysiological flexibility suggesting that self-compassion is related to the ability to regulate emotional arousal. It is this ability that may underlie the lower levels of anxiety and rumination found with high levels of self-compassion. Hence, mindfulness and self-compassion are important components of the mental health of young adults.

 

So, improve self-compassion with psychophysiological flexibility and mindfulness.

 

“mindfulness increases empathy and compassion for others and for oneself, and that such attitudes are good for you. To me, that affirms that when we practice mindfulness, we are simultaneously strengthening our skills of compassion.” – Shauna Shapiro

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Svendsen JL, Schanche E, Osnes B, Vøllestad J, Visted E, Dundas I, Nordby H, Binder P-E and Sørensen L (2020) Is Dispositional Self-Compassion Associated With Psychophysiological Flexibility Beyond Mindfulness? An Exploratory Pilot Study. Front. Psychol. 11:614. doi: 10.3389/fpsyg.2020.00614

 

Abstract

Background: Dispositional mindfulness and self-compassion are shown to associate with less self-reported emotional distress. However, previous studies have indicated that dispositional self-compassion may be an even more important buffer against such distress than dispositional mindfulness. To our knowledge, no study has yet disentangled the relationship between dispositional self-compassion and mindfulness and level of psychophysiological flexibility as measured with vagally mediated heart rate variability (vmHRV). The aim was thus to provide a first exploratory effort to expand previous research relying on self-report measures by including a psychophysiological measure indicative of emotional stress reactivity.

Methods: Fifty-three university students filled out the “Five Facet Mindfulness Questionnaire” (FFMQ) and the “Self-Compassion Scale” (SCS), and their heart rate was measured during a 5 min resting electrocardiogram. Linear hierarchical regression analyses were conducted to examine the common and unique variance explained by the total scores of the FFMQ and the SCS on level of resting vmHRV.

Results: Higher SCS total scores associated significantly with higher levels of vmHRV also when controlling for the FFMQ total scores. The SCS uniquely explained 7% of the vmHRV. The FFMQ total scores did not associate with level of vmHRV.

Conclusion: These results offer preliminary support that dispositional self-compassion associates with better psychophysiological regulation of emotional arousal above and beyond mindfulness

https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00614/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1302118_69_Psycho_20200416_arts_A

 

Improve the Aging Brain and Well-Being with Mindfulness Training

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Improve the Aging Brain and Well-Being with Mindfulness Training

 

By John M. de Castro, Ph.D.

 

“On average, the brains of long-term meditators were 7.5 years younger at age 50 than the brains of non-meditators, and an additional 1 month and 22 days younger for every year after 50.” – Grace Bullock

 

The aging process involves a systematic progressive decline in every system in the body, the brain included. This includes our cognitive (mental) abilities which decline with age including impairments in memory, attention, and problem-solving ability. It is inevitable and cannot be avoided. Research has found that mindfulness practices reduce the deterioration of the brain that occurs with aging restraining the loss of neural tissue. Indeed, the brains of practitioners of meditation and yoga have been found to degenerate less with aging than non-practitioners. Tai Chi and Qigong have also been shown to be beneficial in slowing or delaying physical and mental decline with aging.

 

In today’s Research News article “Long-Term Physical Exercise and Mindfulness Practice in an Aging Population.” (See summary below or view the full text of the study at: https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00358/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1293822_69_Psycho_20200407_arts_A), Tang and colleagues recruited healthy older participants who practiced for an hour a day 6 – 7 days a week for 12 years either physical exercise, aerobic walking, or integrated mind-body training, including body relaxation, mental imagery and mindfulness training. The participants underwent brain imaging with functional Magnetic Resonance Imaging (fMRI). They had their heart rate, respiration. and skin conductance recorded during a fitness exercise session. Salivary Secretory immunoglobulin A (sIgA), an index of mucosal immunity and Cortisol levels, an index of stress, were measured at rest, during stress, and during training. They also completed scales measuring general health and quality of life.

 

They found that the mindfulness group had significantly higher resting heart rate and respiration, high frequency heart rate variability, quality of life, and sIgA levels and significantly lower cortisol levels and skin conductance than the exercise group. In addition, they found that the mindfulness group compared to the exercise group had significantly larger brain striatum including the caudate and putamen and significantly greater functional connectivity between the dorsal anterior cingulate cortex and the striatum and also the insula.

 

These results are interesting and suggest that long-term mindfulness practice results in differences in the psychological, physical, and neural states compared to physical exercise. Psychological well-being improvement in the mindfulness group was suggested by the greater reported quality of life. Physiological improvements in the mindfulness group were suggested by greater relaxation as indexed by greater autonomic nervous system, parasympathetic activity and measured by heart rate variability and skin conductance and lower stress hormone, cortisol, levels. The greater volume of the striatum and greater connectivity with the dorsal anterior cingulate cortex also suggest greater physiological relaxation. The mindfulness group also showed greater immune system function as indexed by sIgA levels. On the other hand, the aerobic walking group demonstrated greater physical fitness as indexed by lower resting heart rate and respiration.

 

In sum, these findings suggest the long-term aerobic walking exercise is good for the physical fitness of older adults. But long-term mindfulness training is better for their overall psychological and physical well-being. These results correspond with other prior findings that shorter-term mindfulness practice results in greater autonomic relaxation, quality of life, and neuroplastic changes in brain systems and that this training reduces the physiological and psychological deterioration occurring with aging.

 

So, improve the aging brain and well-being with mindfulness training.

 

“Mind and body practices, in particular, including relaxation techniques and meditative exercise forms such as yoga, tai chi, and qi gong are being used by older Americans, both for fitness and relaxation, and because of perceived health benefits.” –  National Center for Complementayy and Integrative Health

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Tang Y-Y, Fan Y, Lu Q, Tan L-H, Tang R, Kaplan RM, Pinho MC, Thomas BP, Chen K, Friston KJ and Reiman EM (2020) Long-Term Physical Exercise and Mindfulness Practice in an Aging Population. Front. Psychol. 11:358. doi: 10.3389/fpsyg.2020.00358

 

Abstract

Previous studies have shown that physical exercise and mindfulness meditation can both lead to improvement in physical and mental health. However, it is unclear whether these two forms of training share the same underlying mechanisms. We compared two groups of older adults with 10 years of mindfulness meditation (integrative body-mind training, IBMT) or physical exercise (PE) experience to demonstrate their effects on brain, physiology and behavior. Healthy older adults were randomly selected from a large community health project and the groups were compared on measures of quality of life, autonomic activity (heart rate, heart rate variability, skin conductance response, respiratory amplitude/rate), immune function (secretory Immunoglobulin A, sIgA), stress hormone (cortisol) and brain imaging (resting state functional connectivity, structural differences). In comparison with PE, we found significantly higher ratings for the IBMT group on dimensions of life quality. Parasympathetic activity indexed by skin conductance response and high-frequency heart rate variability also showed more favorable outcomes in the IBMT group. However, the PE group showed lower basal heart rate and greater chest respiratory amplitude. Basal sIgA level was significantly higher and cortisol concentration was lower in the IBMT group. Lastly, the IBMT group had stronger brain connectivity between the dorsal anterior cingulate cortex (dACC) and the striatum at resting state, as well as greater volume of gray matter in the striatum. Our results indicate that mindfulness meditation and physical exercise function in part by different mechanisms, with PE increasing physical fitness and IBMT inducing plasticity in the central nervous systems. These findings suggest combining physical and mental training may achieve better health and quality of life results for an aging population.

https://www.frontiersin.org/articles/10.3389/fpsyg.2020.00358/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1293822_69_Psycho_20200407_arts_A

 

Lower Opioid Cravings are Associated with Lower Depression, Higher Self-Regulation, and Higher Mindfulness

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Lower Opioid Cravings are Associated with Lower Depression, Higher Self-Regulation, and Higher Mindfulness

 

By John M. de Castro, Ph.D.

 

“mindfulness-based interventions could help people dependent on opioids increase their self-awareness and self-control over cravings and be less reactive to emotional and physical pain.” – Science Daily

 

Substance abuse and addiction is a terrible problem, especially opioid pain relievers. Opioid addiction has become epidemic and is rapidly increasing affecting more than 2 million Americans and an estimated 15 million people worldwide. In the U.S more than 20,000 deaths yearly were attributed to an overdose of prescription opioids, and another 13,000 deaths from heroin overdose. These statistics, although startling are only the tip of the iceberg. Drug use is associated with suicide, homicide, motor-vehicle injury, HIV infection, pneumonia, violence, mental illness, and hepatitis. It can render the individual ineffective at work, it tears apart families, it makes the individual dangerous both driving and not.

 

An effective treatment for addiction has been elusive. Most programs and therapies to treat addictions have poor success rates. Recent research is indicating that mindfulness has been found to be effective in treating addictions. One way that mindfulness may produce these benefits is by reducing cravings for opioids. It may also do so by affecting the ability of the addict to regulate their emotions. Indeed, mindfulness has been shown to improve emotional regulation.

 

In today’s Research News article “Autonomic and affective mediators of the relationship between mindfulness and opioid craving among chronic pain patients. Experimental and clinical psychopharmacology.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6355352/), Baker and Garland recruited non-cancer chronic pain patients who were taking opioid analgesics and had them complete self-report measures of mindfulness, opioid craving, and depression. They also measured their heart rates with an electrocardiogram (ECG) while looking at either neutral pictures or “opioid-related image (e.g., pills, pill bottles).” These data were analyzed to determine heart rate variability as a measure of the activity of the peripheral autonomic nervous system.

 

They found that the higher the levels of mindfulness the higher the levels of heart rate variability while looking at opioid-related pictures. And the lower the levels of depression and opioid cravings. Also, the higher the levels of depression, the higher the levels of opioid cravings. Employing a multivariate path analysis, they found that mindfulness was not associated with lower opioid cravings directly, but indirectly via mindfulness’ associations with heart rate variability and depression. That is, they found that mindfulness was associated with higher heart rate variability which was in turn associated with lower opioid cravings and also with lower depression which was in turn associated with lower opioid cravings.

 

Heart rate variability is thought to measure the nervous systems adjustments to the physiology involved in regulating its physical responses to stimuli. In other words, it’s a measure of self-regulation. The present results suggest that mindfulness is associated with greater self-regulation and this is associated with lower cravings for opioids. The results also suggest that depression is associated with higher cravings for opioids and that mindfulness interrupts this by being associated with lower depression.

 

These results are correlative and as such causation cannot be determined. Nevertheless, prior research has demonstrated causal links between mindfulness and lower cravings and depression. So, the present results likely result from causal connections. The findings also suggest the mechanism whereby mindfulness may lower cravings by contributing to the ability to regulate physical responses to opioid-related stimuli and by reducing depression. These results provide more support for the use of mindfulness training as a treatment for addictions.

 

So, lower opioid cravings are associated with lower depression, higher self-regulation, and higher mindfulness.

 

“people suffering from opioid addiction and chronic pain may have fewer cravings and less pain when adding mindfulness to the traditional methadone treatment.” – Grace Bullock

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Baker, A. K., & Garland, E. L. (2019). Autonomic and affective mediators of the relationship between mindfulness and opioid craving among chronic pain patients. Experimental and clinical psychopharmacology, 27(1), 55–63. https://doi.org/10.1037/pha0000225

 

Abstract

Prescription opioid misuse among chronic pain patients is associated with self-regulatory deficits, affective distress and opioid cue reactivity. Dispositional mindfulness has been associated with enhanced self-regulation, lower distress, and adaptive autonomic responses following drug cue exposure. We hypothesized that dispositional mindfulness might serve as a protective factor among opioid-treated chronic pain patients. We examined heart rate variability (HRV) during exposure to opioid cues and depressed mood as mediators of the association between dispositional mindfulness and opioid craving. Data were obtained from a sample of chronic pain patients (N=115) receiving long-term opioid pharmacotherapy. Participants self-reported opioid craving and depression, and HRV was measured during an opioid-cue dot probe task. Dispositional mindfulness was significantly positively correlated with HRV, and HRV was significantly inversely associated with opioid craving. Dispositional mindfulness was significantly negatively correlated with depression, and depression was significantly positively correlated with opioid craving. Path analysis revealed significant indirect effects of dispositional mindfulness on craving through both HRV and depression. Dispositional mindfulness may buffer against opioid craving among chronic pain patients prescribed opioids; this buffering effect may be a function of improved autonomic and affective responses.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6355352/

 

Improve Autonomic Nervous System Function with Yogic Breathing

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Improve Autonomic Nervous System Function with Yogic Breathing

 

By John M. de Castro, Ph.D.

 

“The Bhramari pranayama breathing practice . . . .. is beneficial and instantly calming down the mind. It is one of the best breathing exercises to free the mind of distress, anxiety, or frustration and get rid of anger to a great level.” – Alpesh Jain

 

Breathing is essential for life and generally occurs automatically. It’s easy to take for granted as it’s been there our entire lives. Nevertheless, we become more aware of it when it varies with circumstances, such as when we exercise and also in emotional states, especially fear and anxiety. But we rarely notice it during everyday ongoing life. Yet, its characteristics are associated with our state of well-being. Slow deep breathing is characteristic of a healthy relaxed state. Breathing exercises are common in yoga practices and have been found to have a number of beneficial effects. Bhramari pranayama (Bee breathing) is a yogic breathing practice that adopts simple regulation of voluntary breathing involving an exhalation that simulates the typical humming sound of a bee.

 

Adolescence is a time of mental, physical, social, and emotional growth. It is during this time that higher levels of thinking, sometimes called executive function, develops. But adolescence can be a difficult time, fraught with challenges. During this time the child transitions to young adulthood; including the development of intellectual, psychological, physical, and social abilities and characteristics. There are so many changes occurring during this time that the child can feel overwhelmed and unable to cope with all that is required. It is not known whether training in Bhramari pranayama can be beneficial for adolescents.

 

In today’s Research News article “Effects of yoga breathing practice on heart rate variability in healthy adolescents: a randomized controlled trial.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6997567/), Kuppusamy and colleagues recruited healthy adolescents, 13-18 years of age, and randomly assigned them to either Bhramari pranayama (Bee breathing) or no treatment. Yogic breathing was practiced in the morning for 30 minutes, 5 days per week for 6 months. The participants electrocardiogram (ECG) was measured at rest before and after training.

 

With the ECG they found that in comparison to baseline and the no-treatment control participants, the adolescents who practiced yogic breathing had significantly lower heart rates and significantly higher time and frequency domains of heart rate variability. Increased heart rate variability indicates greater activity of the parasympathetic division of the autonomic nervous system that is active during relaxation. Hence, the findings suggest that practicing yogic breathing improves autonomic function.

 

Increased heart rate variability is associated with lower stress and greater health and longevity and psychological well-being. Hence, increased heart rate variability in the adolescents who practiced Bhramari pranayama (Bee breathing) is an indicator of improved autonomic function that underlies greater health and well-being. This suggests that practicing yogic breathing would improve the youth’s ability to develop healthily during the turbulent times of the teen years.

 

So, improve autonomic nervous system function with yogic breathing.

 

“The noise of bhramari’s buzzing can drown out the endless mental tape loops that can fuel emotional suffering, making it a useful starting point for those whose minds are too “busy” to meditate.” – Timothy McCall

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Kuppusamy, M., Kamaldeen, D., Pitani, R., Amaldas, J., Ramasamy, P., Shanmugam, P., & Vijayakumar, V. (2020). Effects of yoga breathing practice on heart rate variability in healthy adolescents: a randomized controlled trial. Integrative medicine research, 9(1), 28–32. https://doi.org/10.1016/j.imr.2020.01.006

 

Abstract

Background

This study was conducted among healthy adolescents to assess the effects of a yoga breathing practice (Bhramari pranayama, Bhr.P) towards cardiac autonomic function using heart rate variability (HRV) parameters.

Methods

Of the 730 eligible subjects screened, 520 healthy adolescents who met the inclusion and exclusion criteria were randomly assigned to either yoga breathing group (n = 260) or control group (n = 260). The yoga breathing group practiced Bhr.P. five days a week for a duration of six months while the control group continued with their daily routine without any intervention. Outcome measures were time and frequency domain of HRV in both groups which were assessed before and after the intervention using Lead II ECG. Linear models were used in the analysis of short term HRV.

Results

After 6 months of yoga breathing, the time domain parameters of short term HRV showed significant (P < 0.05) improvement towards the parasympathetic domain. Frequency domain parameters also showed the same direction of changes. In contrast, control group subjects showed a trend towards a sympathetic domain.

Conclusion

The present study showed a positive shift in cardiac autonomic modulation towards parasympathetic predominance after 6 months of yoga breathing practice among apparently healthy adolescents.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6997567/

 

Improve Depression by Modulating the Autonomic Nervous System in the Elderly with Tai Chi

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Improve Depression by Modulating the Autonomic Nervous System in the Elderly with Tai Chi

 

By John M. de Castro, Ph.D.

 

“The ancient Chinese practice of tai chi appears to relieve symptoms of depression in older people.” – Tara Parker-Pope

 

Human life is one of constant change. We revel in our increases in physical and mental capacities during development, but regret their decreases during aging. The aging process involves a systematic progressive decline in every system in the body. It is inevitable and cannot be avoided. This includes our mental abilities which decline with age including impairments in memory, attention, and problem-solving ability, and in emotion regulation. Depression is very common in the elderly. The elderly cope with increasing loss of friends and family, deteriorating health, as well as concerns regarding finances on fixed incomes. In addition, many elderly experience withdrawal and isolation from social interactions producing increased loneliness, worry and anxiety.

 

There is some hope for age related decline, however, as there is evidence that it can be slowed. There are some indications that physical and mental exercise can reduce the rate of decline. For example, contemplative practices such as meditation, yoga, and Tai Chi or qigong have all been shown to be beneficial in slowing or delaying physical and mental decline with aging and with improving depression. There is, however, been very little research on the mechanisms by which Tai Chi practice improves depression in the elderly.

 

In today’s Research News article “The Effects of Tai Chi on Heart Rate Variability in Older Chinese Individuals with Depression.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6313592/), Liu and colleagues recruited elderly (aged 60 and older) who were not taking antidepressant medications or drinking alcohol, but who scored as having mild depression on an elderly depression scale. They were randomly assigned to either receive Tai Chi training for 60 minutes, 3 times per week for 24 weeks, or to a no-treatment control condition. The elderly were measured before and after treatment for depression, and heart rate variability, a measure of autonomic nervous system activity.

 

They found that in comparison to baseline and the control group the Tai Chi participants had significantly decreased levels of depression and significant decreases in low frequency heart rate variability and significant increases in high frequency heart rate variability. The higher the levels of high frequency heart rate variability the lower the levels of depression and the lower the levels of low frequency heart rate variability the lower the levels of depression.

 

These findings are interesting and suggest that Tai Chi training reduces depression in the elderly. The results further suggest that Tai Chi training may do so by creating balance between the sympathetic and parasympathetic nervous systems. High frequency heart rate variability is suggestive of parasympathetic (relaxation) activity and this was increased by Tai Chi training while low frequency heart rate variability is suggestive of sympathetic (activation) activity and this was decreased by Tai Chi training. Hence, the results suggest that Tai Chi training may lead to less activation and greater relaxation and this may counter depression.

 

So, improve depression by modulating the autonomic nervous system in the elderly with Tai Chi

 

 “Tai chi has many physical and emotional benefits. Some of the benefits of tai chi include decreased anxiety and depression and improvements in cognition. It may also help you manage symptoms of some chronic diseases.” – Healthline

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Liu, J., Xie, H., Liu, M., Wang, Z., Zou, L., Yeung, A. S., … Yang, Q. (2018). The Effects of Tai Chi on Heart Rate Variability in Older Chinese Individuals with Depression. International journal of environmental research and public health, 15(12), 2771. doi:10.3390/ijerph15122771

 

Abstract

Background Very little research has been done to simultaneously investigate the effects of Tai Chi (TC) on depression and heart rate variability (HRV). This study, therefore, attempted to explore the effects of TC on depression and on HRV parameters. Methods Sixty older individuals with depression score of 10 or above (the Geriatric Depression Scale, GDS) were randomly assigned into two groups: TC (n = 30) and control group (n = 30). Participants in the experimental group participated in a 24-week TC training program (three 60-min sessions per week), whereas individuals in the control group maintained their unaltered lifestyle. Depression and HRV were measured using the GDS and digital electrocardiogram at baseline and after the 24-week intervention. Results The TC had produced significant positive chances in depression and some HRV parameters (mean heart rate, RMSSD, HF, LFnorm, and HFnorm) (p < 0.05), whereas these positive results were not observed in the control group. Conclusions The results of this study indicated that TC may alleviate depression of the elderly through modulating autonomous nervous system or HRV parameters. This study adds to a growing body of research showing that TC may be effective in treating depression of the elderly. Tai Chi as a mild to moderate mind-body exercise is suitable for older individuals who suffer from depression.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6313592/