Yoga

Reduce Body Mass and Improve Body Composition in the Overweight Young Women with Yoga

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Reduce Body Mass and Improve Body Composition in the Overweight Young Women with Yoga

 

By John M. de Castro, Ph.D.

 

“The purpose of exercise interventions should be to help youth with obesity find alternatives that increase their engagement with activity, and thus lead to more sustainable changes in lifestyle. Yoga practice is an excellent example of how to use more nontraditional approaches to engage students with exercise.” – Sarah Shultz

 

Obesity has become an epidemic in the industrialized world. In the U.S. the incidence of obesity, defined as a Body Mass Index (BMI) of 30 or above has more than doubled over the last 35 years to currently around 35% of the population, while two thirds of the population are considered overweight or obese (BMI > 25). Sadly, children and adolescents have not been spared with 1 in 5 school age children and young people (6 to 19 years) classified as obese.

 

Obviously, there is a need for effective treatments to prevent or treat obesity. But, despite copious research and a myriad of dietary and exercise programs, there still is no safe and effective treatment. Mindfulness is known to be associated with lower risk for obesity, alter eating behavior and improve health in obesity. This suggests that mindfulness training may be an effective treatment for overeating and overweight alone or in combination with other therapies. Yoga practice has been shown to have a myriad of physical and psychological benefits. These include significant loss in weight and body mass index (BMI), resting metabolism, and body fat and improve health in the obese.

 

In today’s Research News article “Effects of Continuous Yoga on Body Composition in Obese Adolescents.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8410386/ ) Nongkhai and colleagues recruited overweight (BMI 23-29.5) young women (age 19-22 years) and randomly assigned them to either engage in continuous yoga practice 3 times per week for 50 minutes for 12 weeks or to a no treatment control condition. The yoga practice was designed to increase and maintain aerobic exercise levels (65% – 75% of maximum heart rate). Before, at the midpoint, and after training they were measured for body size and composition.

 

They found that in comparison to baseline and the control group the yoga group had significant decreases in their Body Mass Index (BMI) and body fat mass. While the control group had a significant decrease in muscle mass, the yoga group maintained their muscle mass. Hence, participation in yoga had positive body size and composition benefits for overweight young women.

 

In the present study, the intervention was a yoga practice that elevated and maintained aerobic levels. This makes it impossible to discern if the benefits were due to yoga per se or to the exercise. Nevertheless, these results to some extent replicate previous findings that yoga practice improves weight and body composition. Future research should contain a non-yoga aerobic exercise group. Regardless, it is clear that engaging in continuous yoga is improves the body size and composition of young women.

 

So, reduce body mass and improve body composition in the overweight young women with yoga.

 

“Yoga practice works to expand consciousness of overall health and well being.  . . . many children and teens dealing with obesity who find a safe place in yoga to cultivate a positive sense of self that contributes to confidence.” – Abby Wills

 

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

 

Na Nongkhai, M. P., Yamprasert, R., & Punsawad, C. (2021). Effects of Continuous Yoga on Body Composition in Obese Adolescents. Evidence-based complementary and alternative medicine : eCAM, 2021, 6702767. https://doi.org/10.1155/2021/6702767

 

Abstract

Overweight/obesity is a pressing international health concern, and conventional treatments demonstrate poor long-term efficacy. Several studies have shown that yoga can control risk factors for cardiovascular disease, obesity, and psychosocial stress. The present study aimed to assess the effect of continuous yoga (asanas, pranayama, and Surya Namaskar yoga) on body composition in overweight participants. Forty adolescents with obesity were enrolled in this study. The study was conceived as a prospective, single-center, single-blinded randomized controlled trial. The participants were divided into 2 groups: the intervention group (n = 20), which undertook a continuous yoga practice, and the control group (n = 20). Body composition, including body weight (BW), body mass index (BMI), body fat mass (BFM), and muscle mass, was evaluated using tetrapolar bioelectrical impedance (BIA). Our results showed that the mean BMI and BFM of the yoga intervention group were significantly decreased at week 8 and week 12. The muscle mass of the yoga group continued to improve at a rate of 0.515 per week, which was statistically significant. In conclusion, a continuous yoga practice had a tendency to decrease BMI and BFM and increase muscle mass. These findings demonstrate intervention effectiveness similar to that observed in other clinical research and indicate that continuous yoga practice may be used as an alternative therapy for obesity prevention and health promotion in adolescents with obesity.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8410386/

 

Reduce Stress and Improve Sleep and Cognition with Yoga

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Reduce Stress and Improve Sleep and Cognition with Yoga

 

By John M. de Castro, Ph.D.

 

“yoga can improve your sleep, increase mindfulness, relieve anxiety and even help you stick to healthy habits in other aspects of your life.” – Corey Stieg

 

Modern society has become more around-the-clock and more complex producing considerable pressure and stress on the individual. The advent of the internet and smart phones has exacerbated the problem. The resultant stress can impair sleep. Indeed, it is estimated that over half of Americans sleep too little due to stress. As a result, people today sleep 20% less than they did 100 years ago. Not having a good night’s sleep has adverse effects upon the individual’s health, well-being, and happiness. It has been estimated that 30 to 35% of adults have brief symptoms of insomnia, 15 to 20% have a short-term insomnia disrder, and 10% have chronic insomnia. These sleep problems can interfere with cognitive functions.

 

Mindfulness-based practices including yoga practice have been reported to improve sleep amount and quality and help with insomnia, to reduce stress, and improve cognitive function. The research is accumulating. So, it makes sense to step back and summarize what has been learned about the effects of yoga practice on stress, sleep, and cognition.

 

In today’s Research News article “Sleep, Cognition, and Yoga.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191228/ ) Panjwani and colleagues review and summarize the published research studies on the effects of yoga practice on stress, sleep, and cognition.

 

They report that the published research studies found that yoga practice improved sleep quality, sleep architecture and mental well-being in adults and the elderly. It also improved sleep in individuals with sleep disorders such as sleep apnea. In addition, they report that yoga produces improvement in cognitive function, mood, and stress in healthy adults and reduces cognitive decline in the elderly.

 

Hence, the published research demonstrates that yoga practice is beneficial for sleep, cognition, and mental well-being in adults and the elderly. This suggests that yoga practice should be incorporated into the individual’s lifestyle during their adult life and into their golden years.

 

So, reduce stress and improve sleep and cognition with yoga.

 

“A national survey found that over 55% of people who did yoga found that it helped them get better sleep. Over 85% said yoga helped reduce stress.” – Marlyn Wei

 

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

 

Panjwani, U., Dudani, S., & Wadhwa, M. (2021). Sleep, Cognition, and Yoga. International journal of yoga, 14(2), 100–108. https://doi.org/10.4103/ijoy.IJOY_110_20

 

Abstract

Stress is one of the major problems globally, associated with poor sleep quality and cognitive dysfunction. Modern society is plagued by sleep disturbances, either due to professional demands or lifestyle or both the aspects, often leading to reduced alertness and compromised mental function, besides the well documented ill effects of disturbed sleep on physiological functions. This pertinent issue needs to be addressed. Yoga is an ancient Indian science, philosophy and way of life. Recently, yoga practice has become increasingly popular worldwide. Yoga practice is an adjunct effective for stress, sleep and associated disorders. There are limited well controlled published studies conducted in this area. We reviewed the available literature including the effect of modern lifestyle in children, adolescents, adults and geriatric population. The role of yoga and meditation in optimizing sleep architecture and cognitive functions leading to optimal brain functioning in normal and diseased state is discussed. We included articles published in English with no fixed time duration for literature search. Literature was searched mainly by using PubMed and Science Direct search engines and critically examined. Studies have revealed positive effects of yoga on sleep and cognitive skills among healthy adults as well as patients of some neurological diseases. Further, on evaluating the published studies, it is concluded that sleep and cognitive functions are optimized by yoga practice, which brings about changes in autonomic function, structural changes, changes in metabolism, neurochemistry and improved functional brain network connectivity in key regions of the brain.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191228/

 

Combined Meditation, Yoga, and Ethical Education have Additive Effects on Well-Being

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Combined Meditation, Yoga, and Ethical Education have Additive Effects on Well-Being

 

By John M. de Castro, Ph.D.

 

“When practiced together, yoga and meditation strengthen the connection between mind and body, thereby improving overall fitness and wellbeing.” – Peaceful Dragon

 

Mindfulness training has been shown to improve health and well-being in healthy individuals and those with medical and psychiatric conditions, Similarly, yoga practice has been shown to improve health and well-being in healthy individuals and those with medical and psychiatric conditions.  Meditation practice is known to decrease the psychological and physical responses to stress. Similarly, yoga practice has been shown to decrease the psychological and physical responses to stress. But there has been little research of the impact of combining meditation and yoga practices.

 

In today’s Research News article “Differential Effects of Ethical Education, Physical Hatha Yoga, and Mantra Meditation on Well-Being and Stress in Healthy Participants-An Experimental Single-Case Study.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8375679/ ) Matko and colleagues recruited healthy adult participants who did not practice meditation or yoga and randomly assigned them to one of 4 treatment conditions once a week for 8 weeks; mantra meditation alone, mantra meditation plus physical yoga, mantra meditation plus ethical education, and mantra meditation plus physical yoga and ethical education. They were also instructed to practice daily at home. They were measured weekly before and after training and 8 weeks and 12 months later for well-being, perceived stress, and life satisfaction and a daily home practice questionnaire.

 

They found that all conditions produced significant improvements in well-being, but the combined treatments produced greater improvements than mantra meditation alone with those that contained ethical education having the greatest benefits. All conditions produced equivalent significant increases in life satisfaction.

 

The results suggest that engaging in mindfulness practices produce lasting improvements in the well-being and life satisfaction of the participants. This improved well-being and life satisfaction produced by mindfulness practices have been well documented in prior research studies. In addition, the findings suggest that adding yoga and especially ethical education to meditation amplifies the improvements in well-being. Ethical education in the present study included training and discussion of non-violence, truthfulness, non-stealing, self-restraint, non-hoarding, cleanliness, contentment, and transcendence. This appeared to have an additive effect on well-being.

 

 

There was, however, a confounding variable which is the duration of practice. Whereas the weekly trainings for mantra meditation practice took 60 minutes, mantra meditation plus physical yoga took 105 minutes, mantra meditation plus ethical education took 135 minutes, and mantra meditation plus physical yoga and ethical education took 180 minutes. In addition, each practice was practiced daily for 20 minutes with the combined conditions being practiced for 40 and 60 minutes respectively. So, the more practice the greater the improvement in well-being. Future research needs to fix the amount of practice so that the total is the same for all conditions and their combinations.

 

So, combined meditation, yoga, and ethical education have additive effects on well-being.

 

“The beauty of Yoga and Meditation, when they are merged together, helps one relish each and every moment of life. There is no place for stress and anxiety in a mind that enjoys Yoga. While Yoga poses promote blood circulation in the brain, Meditation makes sure it stays calm and composed to feel complete serenity.” – Manmohan Singhis

 

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

 

Matko, K., Sedlmeier, P., & Bringmann, H. C. (2021). Differential Effects of Ethical Education, Physical Hatha Yoga, and Mantra Meditation on Well-Being and Stress in Healthy Participants-An Experimental Single-Case Study. Frontiers in psychology, 12, 672301. https://doi.org/10.3389/fpsyg.2021.672301

 

Abstract

Traditionally, yoga is a multicomponent practice consisting of postures, breathing techniques, meditation, mantras, and ethics. To date, only a few studies have tried to dismantle the effects of each of these components and their combinations. To fill this gap, we examined the incremental effects of ethical education and physical Hatha yoga on mantra meditation using a single-case multiple-baseline design. This study was part of a project evaluating the new mind–body program Meditation-Based Lifestyle Modification. Fifty-seven healthy participants with no regular yoga or meditation practice were randomly assigned to three baselines (7, 14, and 21 days) and four conditions using a random number generator. The conditions were mantra meditation alone (MA), meditation plus physical yoga (MY), meditation plus ethical education (ME), and meditation plus yoga and ethical education (MYE). All the interventions lasted for 8 weeks and were run consecutively according to baseline length. During the baseline and treatment phases, participants received daily questionnaires measuring their well-being (WHO-5 Well-Being Index), stress (Perceived Stress Scale), and subjective experiences. Forty-two participants completed the treatment and were entered in the analyses. We analyzed our data using visual inspection, effect size estimation (Tau-U), and multilevel modeling. Almost all participants showed a longitudinal increase in well-being. Regarding between-group differences, participants who received ethical education exhibited the largest increases in well-being (Tau-U = 0.30/0.23 for ME/MYE), followed by participants in the MY condition (Tau-U = 0.12). Conversely, participants in the MA condition showed no change (Tau-U = 0.07). There was a tendency for the combined treatments to decrease stress. This tendency was strongest in the MY condition (Tau-U = –0.40) and reversed in the MA condition (Tau-U = 0.17). These results emphasize the incremental and differential effects of practicing meditation in combination with other practices from the eight-fold yoga path. This approach is valuable for better understanding the multifaceted practice of yoga.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8375679/

 

Improve Reaction Time and Memory and Lose Weight with Yoga

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Improve Reaction Time and Memory and Lose Weight with Yoga

 

By John M. de Castro, Ph.D.

 

“Yoga practice seems to be associated with moderate improvements in cognitive function.” – Neha Gothe

 

Mindfulness training has been shown to be effective in improving physical and psychological health and also improves cognitive flexibility. 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. Yoga practice has been shown to improve both social–emotional and cognitive skills.

 

In today’s Research News article “Effect of 12 Weeks of Yogic Training on Neurocognitive Variables: A Quasi-Experimental Study.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117916/ ) Chatterjee and colleagues recruited healthy adults and assigned them to receive either 6-days per week for 12 weeks of yoga practice or to a wait-list control group. Yoga practice started at 45 minutes per day at the start of training increasing systematically to 105 minutes by the 12th week. They were measured before during and after training for body size, visual and auditory reaction time, and for short-term memory.

 

They found that in comparison to baseline and the wait-list control group, the group that practiced yoga had a significant weight loss, increase in short-term memory, and decrease in visual and auditory reaction times.

 

In interpreting these findings, it should be recognized that the comparison, control, condition was passive and as such there is a possibility that the observed changes were due to participant expectancies, experimenter bias, attention effects, etc. In addition, the control condition did not involve any physical activity. So, it is possible that the benefits seen were due to the exercise provided by the yoga practice rather than anything specific to yoga. But clearly the two groups had different response over the course of treatment. In addition, yoga practice has been shown in controlled research to improve cognitive performance and memory. So, the results probably result from the effects of the practice.

 

So, improve reaction time and memory and lose weight with yoga.

 

“taking up yoga may be a good way to maintain your brain health by increasing physical activity and possibly also alleviating stress.” – Yuko Hara

 

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

 

Chatterjee, S., Mondal, S., & Singh, D. (2021). Effect of 12 Weeks of Yogic Training on Neurocognitive Variables: A Quasi-Experimental Study. Indian journal of community medicine : official publication of Indian Association of Preventive & Social Medicine, 46(1), 112–116. https://doi.org/10.4103/ijcm.IJCM_325_20

 

Abstract

Background:

Neurocognitive abilities are the brain-mind skills needed to initiate any task from the simplest to the most complex, decreases with advancing age. Attention, alertness, and memory are the basic neurocognitive functions most affected by age. There are potential benefits of yoga on neurocognitive functions because this ancient Indian technique positively nurtures the mind-body systems.

Aim of the Study:

The present study was aimed to evaluate the effect of 12 weeks of yogic training on neurocognitive abilities in a middle-aged group.

Methods:

A total of 86 volunteers (46 male and 40 females, age group of 35–55 years), with no prior experience of yoga were participated in this study. Five male and 4 female participants were excluded from the study. All participants divided into yoga training group (male = 21 and female = 18) and control group (male = 20 and female = 18). The yoga training group underwent yoga practices, including kriya, surya namaskar, asana, pranayama, and dhyana daily in the morning, for 6 days/week, for 12 weeks. Standing height, body weight, body mass index, visual reaction time (RT), auditory RT (attention and alertness), and short-term memory were assessed day 1 (pre), 6th week (mid), and 12th weeks (post) of intervention.

Results:

Repeated-measures analysis of variance showed that a statistically significant increased (P < 0.05) in attention-alertness and short-term memory after 12 weeks of yogic practices.

Conclusion:

Integrated approach of yogic intervention may have promising effect on neurocognitive abilities that concomitantly promote successful aging.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8117916/

 

Yoga Practitioners Cope Better with the Stress and Psychological Distress During Covid-19 Pandemic

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Yoga Practitioners Cope Better with the Stress and Psychological Distress During Covid-19 Pandemic

 

By John M. de Castro, Ph.D.

 

“As the lockdown cannot last forever and workplaces will have to be functional soon, there is an increased possibility of recurrent infection. Therefore, Yoga can provide the necessary tool for risk reduction, amelioration of stress and anxiety and strengthening of the immune function.” – Kanupriya Sharma 

 

Mindfulness training and yoga practices have been shown to improve health and well-being in healthy individuals. They have 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. The COVID-19 pandemic has challenged the mental and physical health of the population. It has created intense stress both for frontline workers but also for people simply isolating at home. Mindfulness is known to decrease the psychological and physical responses to stress and yoga practice also produces similar improvements. So, yoga practice may be helpful in coping with the mental and physical challenges resulting from the lockdown during the COVID-19 pandemic.

 

In today’s Research News article “Yoga Practice Is Beneficial for Maintaining Healthy Lifestyle and Endurance Under Restrictions and Stress Imposed by Lockdown During COVID-19 Pandemic.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8257944/ ) Nagarathna and colleagues recruited adult (>18 years of age) participants in India online during the Covid-19 lockdown and had them complete a questionnaire measuring demographics, Covid-19 exposure, physical health, mental health, coping strategies, lifestyle, and physical activities.

 

They defined a yoga group as those participants who practiced yoga before and during the Covid-19 lockdown and the non-yoga group as those who did not. They report that the yoga group had a significantly greater proportion of females and students, were younger, were less likely to use alcohol, tobacco, or other substances and eat junk food, more likely to be vegetarian, were disciplined in their diet, and had greater sleep quality, physical strength and endurance, and energy, have lower levels of anxiety and fear, but did not differ in Covid-19 exposure. In addition, the yoga group indicated more adaptive coping strategies.

 

This study was a comparison between groups defined by whether they were yoga practitioners or not. Any observed differences could well be due to the types of people attracted to yoga practice versus those who are not. It cannot be concluded that the practice of yoga was responsible for the differences. But prior research has demonstrated in controlled trials that the practice of yoga produces many physical and psychological benefits. So, the differences observed here may well be due to causal effects of yoga practice. Regardless of causation, the results clearly show that during the Covid-19 lockdown, yoga practitioners have greater physical and mental well-being and have healthier lifestyles.

 

So, yoga practitioners cope better with the stress and psychological distress during Covid-19 pandemic.

 

“Yoga can be a powerful tool to deal with the lockdown’s uncertainty and isolation, as well as to maintain physical well-being.” – United Nations

 

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

Nagarathna, R., Anand, A., Rain, M., Srivastava, V., Sivapuram, M. S., Kulkarni, R., Ilavarasu, J., Sharma, M., Singh, A., & Nagendra, H. R. (2021). Yoga Practice Is Beneficial for Maintaining Healthy Lifestyle and Endurance Under Restrictions and Stress Imposed by Lockdown During COVID-19 Pandemic. Frontiers in psychiatry, 12, 613762. https://doi.org/10.3389/fpsyt.2021.613762

 

Abstract

Uncertainty about Coronavirus disease 2019 (COVID-19) and resulting lockdown caused widespread panic, stress, and anxiety. Yoga is a known practice that reduces stress and anxiety and may enhance immunity. This study aimed to (1) investigate that including Yoga in daily routine is beneficial for physical and mental health, and (2) to evaluate lifestyle of Yoga practitioners that may be instrumental in coping with stress associated with lockdown. This is a pan-India cross-sectional survey study, which was conducted during the lockdown. A self-rated scale, COVID Health Assessment Scale (CHAS), was designed by 11 experts in 3 Delphi rounds (Content valid ratio = 0.85) to evaluate the physical health, mental health, lifestyle, and coping skills of the individuals. The survey was made available digitally using Google forms and collected 23,760 CHAS responses. There were 23,290 valid responses (98%). After the study’s inclusion and exclusion criteria of yogic practices, the respondents were categorized into the Yoga (n = 9,840) and Non-Yoga (n = 3,377) groups, who actively practiced Yoga during the lockdown in India. The statistical analyses were performed running logistic and multinomial regression and calculating odds ratio estimation using R software version 4.0.0. The non-Yoga group was more likely to use substances and unhealthy food and less likely to have good quality sleep. Yoga practitioners reported good physical ability and endurance. Yoga group also showed less anxiety, stress, fear, and having better coping strategies than the non-Yoga group. The Yoga group displayed striking and superior ability to cope with stress and anxiety associated with lockdown and COVID-19. In the Yoga group, participants performing meditation reportedly had relatively better mental health. Yoga may lead to risk reduction of COVID-19 by decreasing stress and improving immunity if specific yoga protocols are implemented through a global public health initiative.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8257944/

 

Improve Lipid Metabolism in Diabetes with Yoga

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Improve Lipid Metabolism in Diabetes with Yoga

 

By John M. de Castro, Ph.D.

 

“Yoga, being a lifestyle incorporating exercise and stress management training, targets the elevated lipid levels in patients with diabetes.” – Nisha Shantakumari

 

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 a common and increasingly prevalent illness that 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 lifestyle. Unlike Type I Diabetes, Type II does not require insulin injections. Instead, the treatment and prevention of Type 2 Diabetes focuses on diet, exercise, and weight control. Recently, mindfulness practices have been shown to be helpful in managing diabetes. A mindfulness practice that combines mindfulness with exercise is yoga and it has been shown to be helpful in the treatment of Type II Diabetes.

 

In today’s Research News article “Effectiveness of Yoga Lifestyle on Lipid Metabolism in a Vulnerable Population-A Community Based Multicenter Randomized Controlled Trial.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8303653/ ) Nagarathna and colleagues recruited a large nationwide rural and urban based sample of adults with no diabetes, prediabetes (high risk for development of Type 2 diabetes), or type 2 diabetes and randomly assigned them to receive either standard lifestyle treatment with lectures on diet, exercise, sleep and stress management or the same lifestyle treatment plus 3 months of daily, 60 minute, yoga practice consisting of postures, breathing practices, relaxation, pranayama, meditation. Blood was drawn before and after treatment and assayed for lipids.

 

They found that in comparison to baseline and the control group, the yoga group after training had significantly lower levels of blood total cholesterol, triglycerides, low-density lipoprotein, and high-density lipoprotein. This was true particularly for participants with high baseline blood lipid levels. These improvements were present for both males and females, for urban and rural participants, and for younger (<40 years of age) and older (>40) praticipants.

 

This study examined a very large nationwide community sample (>10,000) participants and is thus highly generalizable. It replicates previous research demonstrating the ability of yoga practice reduce blood fat levels and to improves patients with diabetes. But yoga is both a contemplative practice and an exercise. The control condition in this study did not contain exercise. So, it is impossible to tell if the improvements occurred due to yoga practice or to the exercise provided in the practice. Future studies should contain an alternative exercise control condition.

 

Regardless, it is clear that yoga practice improves blood lipid profiles in prediabetic and diabetic adults. This should help to restrain or delay the secondary health problems that are associated with diabetes. This should improve the quality of life, health, and well-being of the individuals.

 

So, improve lipid metabolism in diabetes with yoga.

 

“Yoga can do more than just relax your body in mind — especially if you’re living with diabetes. Certain poses may help lower blood pressure and blood sugar levels while also improving circulation, leading many experts to recommend yoga for diabetes management.” – Emily Cronkleton

 

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

 

Nagarathna, R., Kumar, S., Anand, A., Acharya, I. N., Singh, A. K., Patil, S. S., Latha, R. H., Datey, P., & Nagendra, H. R. (2021). Effectiveness of Yoga Lifestyle on Lipid Metabolism in a Vulnerable Population-A Community Based Multicenter Randomized Controlled Trial. Medicines (Basel, Switzerland), 8(7), 37. https://doi.org/10.3390/medicines8070037

 

Abstract

Background: Dyslipidemia poses a high risk for cardiovascular disease and stroke in Type 2 diabetes (T2DM). There are no studies on the impact of a validated integrated yoga lifestyle protocol on lipid profiles in a high-risk diabetes population. Methods: Here, we report the results of lipid profile values of 11,254 (yoga 5932 and control 5322) adults (20–70 years) of both genders with high risk (≥60 on Indian diabetes risk score) for diabetes from a nationwide rural and urban community-based two group (yoga and conventional management) cluster randomized controlled trial. The yoga group practiced a validated integrated yoga lifestyle protocol (DYP) in nine day camps followed by daily one-hour practice. Biochemical profiling included glycated hemoglobin and lipid profiles before and after three months. Results: There was a significant difference between groups (p < 0.001 ANCOVA) with improved serum total cholesterol, triglycerides, low-density lipoprotein, and high-density lipoprotein in the yoga group compared to the control group. Further, the regulatory effect of yoga was noted with a significant decrease or increase in those with high or low values of lipids, respectively, with marginal or no change in those within the normal range. Conclusion: Yoga lifestyle improves and regulates (lowered if high, increased if low) the blood lipid levels in both genders of prediabetic and diabetic individuals in both rural and urban Indian communities.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8303653/

 

Yoga Practice is Positively Related to Spirituality

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Yoga Practice is Positively Related to Spirituality

 

By John M. de Castro, Ph.D.

 

“This ancient science goes far beyond the mere physical aspects, by way of deepening the connection between mind, body and most important of all, the spirit.“ – Himalayan Yoga Institute

 

Yoga developed in India millennia ago as a deep spiritual practice. It developed as a contemplative practice that unified body and mind. Yoga was known to have physical benefits, but the most important benefit was seen to be spiritual development. But as yoga emerged and was practiced in the west it was secularized. This was for good reason, as western society was not ready to accept an ancient eastern spiritual practice. As a result, to the vast majority of westerners, yoga is an exercise to improve appearance and  physical fitness. It is a means to mold the body to look good, as a health promoting practice, and as a strategy to help lose weight. It is unclear whether the association of yoga with spirituality is still present in western societies.

 

In today’s Research News article “The Relationship Between Yoga and Spirituality: A Systematic Review of Empirical Research.” (See summary below or view the full text of the study at: https://www.frontiersin.org/articles/10.3389/fpsyg.2021.695939/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1699247_a0P58000000G0YfEAK_Psycho_20210805_arts_A ) Csala and colleagues review and summarize the published research studies on the association of Yoga practice with spirituality. They identified 30 published research studies.

 

They report that the published research found that yoga practice produces increases in the spirituality of practitioners. They report that the regularity of yoga practice is positively related to the increased spirituality. In western cultures the most frequent reasons for yoga practice are physical, particularly health and appearance. But as practice continues s spirituality becomes more and more the goal of practice regardless of the original intent. In addition, they report that yoga practitioners are spiritual as opposed to religious. Practitioners emphasize direct conscious experience.

 

Hence, in the west, regular yoga practice leads to increased spirituality regardless of the original intent of engaging in yoga practice. This suggests that components of yoga practice have characteristics that lead to increased spirituality. This could well be the present moment focus involved in yoga practice. This improved spirituality may be, at least in part, the mechanism by which yoga practice leads to greater physical and psychological well-being.

 

So, yoga practice is positively related to spirituality.

 

“Yoga is not a religion (though those who are unfamiliar with it sometimes misunderstand it as such). Yoga is a practice, and a philosophy. It is a lens through which to understand the world and your place in it. And if you do have a religion, or spiritual practice of any kind, it gives you a set of practical tools that can help to deepen your faith.” – Katie Malik

 

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

 

Csala B, Springinsfeld CM and Köteles F (2021) The Relationship Between Yoga and Spirituality: A Systematic Review of Empirical Research. Front. Psychol. 12:695939. doi: 10.3389/fpsyg.2021.695939

 

Objective: Both yoga practice and spirituality are associated with beneficial mental health outcomes. Within yoga research, however, spirituality is still a widely neglected area. The present systematic review aims to explore empirical studies, which do, in fact, investigate the relationship between yoga and spirituality in order to provide an overview and future directions for research on this topic. The review examines whether available empirical research supports an association between yoga practice and spirituality and, if so, which specific aspects of spirituality are associated with yoga practice.

Methods: The systematic review followed the PRISMA guideline (Prospero registration number: CRD42020155043). Empirical studies written in English, German, or Hungarian language were selected from a database search in Google Scholar, PsycINFO, and Science Direct. A total of 30 studies met the final inclusion criteria.

Results: According to the quantitative and qualitative studies reviewed, yoga practice seems to be positively associated with spirituality. This association concerns various aspects of spirituality, such as spiritual aspirations, a search for insight/wisdom, an integrative worldview, a sense of meaning and peace, faith, hope, compassion, and happiness within. To harness the potential spiritual benefits of yoga, regular practice appears to be essential. Yoga practitioners seem to have both physical and spiritual motives for practicing. At least in Western societies, however, physical intentions are more prevalent than spiritual ones. The meaning of spirituality for yoga practitioners is also discussed. Due to risk of bias of the majority of the reviewed studies, however, outcomes must be taken with caution.

Conclusion: Yoga practice may be positively associated with several aspects of spirituality. For more evidence, further investigation of the topic is suggested. Particularly, we propose the inclusion of holistic forms of yoga practice and a comparison of Eastern and Western approaches to yoga.

https://www.frontiersin.org/articles/10.3389/fpsyg.2021.695939/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1699247_a0P58000000G0YfEAK_Psycho_20210805_arts_A

 

Improve Self-Awareness and Self-Regulation with Yoga Practice

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Improve Self-Awareness and Self-Regulation with Yoga Practice

 

By John M. de Castro, Ph.D.

 

“Mindfulness is described through systematic mental training that develops meta-awareness (self-awareness), an ability to effectively modulate one’s behavior (self-regulation), and a positive relationship between self and other that transcends self-focused needs and increases prosocial characteristics (self-transcendence).” – David Vago

 

Mindfulness promotes meta-awareness self-awareness, an ability to effectively modulate one’s behavior, self-regulation, and a positive relationship between self and other that transcends self-focused needs and increases prosocial characteristics, self-transcendence. This is sometimes abbreviated as S-Art. It is not known, however, if yoga practice, which is both a mindfulness practice and an exercise, also promotes S-Art.

 

In today’s Research News article “Applying the S-ART Framework to Yoga: Exploring the Self-Regulatory Action of Yoga Practice in Two Culturally Diverse Samples.” (See summary below or view the full text of the study at: https://www.frontiersin.org/articles/10.3389/fpsyg.2021.585300/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1692584_a0P58000000G0YfEAK_Psycho_20210729_arts_A ) Tolbaños-Roche and colleagues recruited yoga practitioners and non-practitioners from India and also from Spain who were participating in a short-term yoga certificate program lasting 1 to 3 months. They were measured for interoceptive awareness, attention, emotional awareness, decentering, emotion regulation, and self-transcendence.

 

They found in comparison to non-practitioners that the yoga practitioners were significantly higher in decentering, self-awareness, and self-regulation. In addition, the longer the practitioners have practiced yoga the higher the levels of self-awareness (interoceptive awareness), and self-regulation. They found cultural differences in that the Indian sample had a significant relationship between yoga practice and the longer the practitioners have practiced yoga and the levels of self-awareness and decentering. On the other hand, for the Spanish sample the greater the amount of exercise and the frequency of the yoga practice the greater the levels of self-awareness and decentering. These cultural differences may result from differences in the reasons for yoga practice in the two cultures; while in India yoga is often used as a spiritual practice while in Spain yoga is often used as an exercise.

 

This study employed natural groups; yoga practitioners compared to non-practitioners. This leaves open the possibility that the differences in self-awareness and self-regulation seen were due to the different types of people who choose to practice yoga versus those that don’t and not to the practice of yoga itself. Other results are correlative and thereby don’t allow conclusions regarding causation. Hence, conclusion must be tempered and manipulative follow-up studies are needed.

 

Nevertheless, the results suggest that yoga practice is associated with higher levels of self-awareness, particularly the awareness of their internal state, and self-regulation, particularly emotion regulation, but not self-transcendence. These are significant benefits of yoga practice that may relate to yoga’s positive effects on mental and physical health.

 

So, improve self-awareness and self-regulation with yoga practice.

 

“yoga may function through top-down and bottom-up mechanisms for the regulation of cognition, emotions, behaviors, and peripheral physiology, as well as for improving efficiency and integration of the processes that subserve self-regulation.” – Tim Gard

 

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

 

Tolbaños-Roche L and Menon P (2021) Applying the S-ART Framework to Yoga: Exploring the Self-Regulatory Action of Yoga Practice in Two Culturally Diverse Samples. Front. Psychol. 12:585300. doi: 10.3389/fpsyg.2021.585300

 

Mindfulness practices form the core of numerous therapeutic programs and interventions for stress reduction and the treatment of different health conditions related to stress and life habits. Ways and means to regulate oneself effectively also form the foundation of the path of yoga in the accomplishment of holistic health and well-being. The self-awareness, self-regulation, and self-transcendence (S-ART) model can be considered as an overarching neurobiological framework to explain the self-regulatory mechanisms of well-being present in mindfulness-based practices. The current study, by connecting and applying the S-ART framework to the self-regulatory mechanisms in yoga and generating related hypotheses, provides a theory-led explanation of the action of yoga practices, which is sparse in the literature. Testing the S-ART model in yoga in two culturally diverse samples, assessing the model-mapped psychological mechanisms of action, and exploring the influence of perseverance in yoga practice are the original contributions of this study. The study sample comprised 362 yoga practitioners and non-practitioners (197 Indian and 165 Spanish), who completed four tests of psychological variables indicative of the aforementioned three S-ART abilities. These tests were Multidimensional Assessment of Interoceptive Awareness (MAIA), Experiences Questionnaire-Decentering (EQ-D) subscale, Difficulties in Emotion Regulation Scale (DERS), and Relational Compassion Scale (RCS). The results indicated significantly better self-awareness and self-regulatory abilities in yoga practitioners (Indian and Spanish in a combination) than non-practitioners, reflected in higher levels of interoceptive awareness and decentering abilities. Moreover, perseverance in yoga practice acted as a significant predictor of self-awareness and self-regulation in practitioners. An analysis of each cultural sample revealed some differences. Yoga practice and perseverance in it acted as a significant predictor of interoceptive awareness and decentering in Indian practitioners having more than 1 year of sustained yoga practice, but for the Spanish participants, physical exercise and frequency of yoga practice acted as better predictors of interoceptive awareness and decentering in comparison to yoga practice and perseverance in it. The obtained results suggested that the S-ART model provided preliminary but promising evidence for the self-regulatory mechanisms of action in yoga practice within a culturally diverse sample of yoga practitioners. This study also widens the scope of generating further hypotheses using the S-ART theoretical framework for testing the self-regulatory mechanisms of action in yoga practice.

https://www.frontiersin.org/articles/10.3389/fpsyg.2021.585300/full?utm_source=F-AAE&utm_medium=EMLF&utm_campaign=MRK_1692584_a0P58000000G0YfEAK_Psycho_20210729_arts_A

 

Improve Lung Function in Children with Duchenne Muscular Dystrophy with Physiotherapy and Yoga

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Improve Lung Function in Children with Duchenne Muscular Dystrophy with Physiotherapy and Yoga

 

By John M. de Castro, Ph.D.

 

“It’s not just about the physical movement, although that can really benefit people. Yoga is more about the inner experience than the outer experience. For people who have disabilities, I focus on deep breathing and meditation. Even when a pose requires the use of muscles impacted by neuromuscular disease, I tell my students they can close their eyes and visualize the body part that won’t move the way they think it should.” – Chelsea Singer

 

Muscular dystrophy is a relatively rare inherited disease that damages and weakens muscles over time due to the lack of a protein called dystrophin, which is necessary for normal muscle function. The absence of this protein can cause problems with walking, swallowing, and muscle coordination. Eventually sufferers lose the ability to walk and require a wheelchair. Muscular dystrophy can occur at any age, but most diagnoses occur in childhood. Duchenne muscular dystrophy is the most common form in children occurring in 1 out of 3,500 births. The symptoms include trouble walking and standing, breathing difficulties, swallowing problems, and lung and heart weakness.

 

There is no cure for Duchenne muscular dystrophy. Drugs and surgery are used to slow progression and relieve symptoms. Respiratory problems are often treated with physiotherapy. Yoga practice has been shown to improve pulmonary function. It is not known, however, if yoga practice in addition to physiotherapy can help improve pulmonary function in children with Duchenne muscular dystrophy in children.

 

In today’s Research News article “Effect of Yoga and Physiotherapy on Pulmonary Functions in Children with Duchenne Muscular Dystrophy – A Comparative Study.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191220/ ) Dhargave and colleagues recruited boys 5-10 years old who were diagnosed with Duchenne muscular dystrophy and randomly assigned them to receive daily physiotherapy or the combination of physiotherapy plus yoga for 1 year. Physiotherapy occurred at home for 45 minutes twice a day in the morning and afternoon. The yoga group received physiotherapy in the morning and 45 minutes of yoga in the afternoon, including postures and breathing exercises. They were measure before and after training and every 3 months during the year of training for pulmonary function.

 

They found that in comparison to baseline both groups had significant improvements in pulmonary function over the year of training including improvements in vital capacity, peak expiratory flow rate, maximum voluntary ventilation, and tidal volume during maximum voluntary ventilation. Hence, replacing one daily physiotherapy session with yoga produced equivalent improvements in pulmonary function to 2 daily physiotherapy sessions. Both of the programs increased the respiratory muscle strength, maintained the resilience of lung tissue, and improved the lung capacities. Hence, yoga practice can be employed to supplement physiotherapy in the treatment of children diagnosed with Duchenne muscular dystrophy.

 

So, improve lung function in children with Duchenne muscular dystrophy with physiotherapy and yoga.

 

“Although there is no cure, yoga can help to ease the symptoms of Muscular Dystrophy and improve quality of life. Yoga’s gentle movements in combination with pranayama (breathing techniques) can improve muscle tone and reduce pain, increasing the flow of oxygen, nutrients, and energy through the body, and enabling the more efficient expulsion of toxins.” – YogaClicks

 

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

 

Dhargave, P., Nalini, A., Nagarathna, R., Sendhilkumar, R., James, T. T., Raju, T. R., & Sathyaprabha, T. N. (2021). Effect of Yoga and Physiotherapy on Pulmonary Functions in Children with Duchenne Muscular Dystrophy – A Comparative Study. International journal of yoga, 14(2), 133–140. https://doi.org/10.4103/ijoy.IJOY_49_20

 

Abstract

Context:

Abnormal respiratory function is known to be detectable almost as soon as it can be measured reliably. Studies have identified the effect of respiratory muscle training as well as breathing exercises in improving pulmonary functions in children with Duchenne muscular dystrophy (DMD).

Aims:

This study aims to identify the add-on effect of yoga over physiotherapy on pulmonary functions in children with DMD.

Settings and Design:

One hundred and twenty-four patients with DMD were randomized to two groups. Group I received home-based physiotherapy and Group II received physiotherapy along with yoga intervention.

Materials and Methods:

Pulmonary function test (PFT) was assessed before the intervention (baseline data) and at regular intervals of 3 months for a period of 1 year.

Statistical Analysis Used:

Normality was assessed using Shapiro–Wilk normality test. The baseline data were analyzed using Mann–Whitney U-test to identify the homogeneity. Repeated measures analysis of variance was used to assess significant changes in study parameters during the assessment of every 3 months, both within and between the two groups of patients.

Results:

A total of 88 participants completed all the 5 assessments, with a mean age of 7.9 ± 1.5 years. PFT parameters such as forced vital capacity (FVC), peak expiratory flow rate, maximum voluntary ventilation (MVV), and tidal volume during maximum voluntary ventilation (MVt) demonstrated significant improvements in Group I. In Group II, FVC and MVt significantly improved from baseline up to 1 year, whereas MVV improved from baseline up to 9 months. Tidal volume did not show any changes in both the groups.

Conclusions:

The findings suggest that introduction of yoga with physiotherapy intervention at an early age can be considered as one of the therapeutic strategies in improving pulmonary functions in patients with DMD.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191220/

Hot Yoga is Superior in Improving Cardiovascular Health

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Hot Yoga is Superior in Improving Cardiovascular Health

 

By John M. de Castro, Ph.D.

 

“It might be hard, but hot yoga can help improve strength, flexibility and balance, while helping decrease your risk of conditions such as diabetes and heart disease.” – Lydia Stephens

 

Cardiovascular disease is the number one killer, claiming more lives than all forms of cancer combined. “Heart disease is the leading cause of death for both men and women. About 610,000 people die of heart disease in the United States every year–that’s 1 in every 4 deaths. Every year about 735,000 Americans have a heart attack.” (Centers for Disease Control). A myriad of treatments has been developed for heart disease including a variety of surgical procedures and medications. But the safest effective treatments are lifestyle changes. These include quitting smoking, weight reduction, improved diet, physical activity, and reducing stresses. Other safe and effective treatments are contemplative practices, such as meditation, tai chi, and yoga, have also been shown to be helpful for heart health. These practices have also been shown to be helpful for producing the kinds of lifestyle changes needed such as smoking cessation, weight reduction, and stress reduction.

 

Yoga is a mindfulness practice and exercise that has been shown to improve physical well-being and cardiovascular health. Hot Yoga is somewhat unique yoga practice as it is practiced in a heated environment (105°F, 40.6°C, 40% humidity). The hot environment is thought to soften the muscles making them more pliable and loosen the joints making them more flexible allowing the practitioner to go deeper into poses. The sweating that occurs is thought to help remove toxins and impurities. It is not known if hot yoga is better in improving cardiovascular health than regular yoga.

 

In today’s Research News article “Cardiovascular, Cellular, and Neural Adaptations to Hot Yoga versus Normal-Temperature Yoga.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191229/ ) Bourbeau and colleagues recruited adults and randomly assigned them to either practice normal yoga or hot yoga for 75 minutes 3 times per week for 4 weeks. Both normal and hot yoga sessions followed an identical taped standardized yoga program. The participants were measured before and after training for body size, maximal aerobic capacity (VO2Max), heat tolerance, and perceived stress. In addition, blood was drawn and assayed for adrenocorticotropic hormone, brain-derived neurotrophic factor, and heat shock protein 70.

 

They found that in comparison to baseline the hot yoga group had significant increases in maximal aerobic capacity (VO2Max) and heat shock protein 70, while the normal yoga group did not. Both yoga groups had significant increases in brain-derived neurotrophic factor. Neither yoga practices significantly altered plasma adrenocorticotropic hormone, perceived stress, or heat tolerance.

 

These results suggest that practicing yoga in a hot environment increases its ability to improve cardiovascular fitness (VO2Max) and cellular heat tolerance (Heat shock protein 70). Yoga in either form increase brain development (Brain-derived neurotrophic factor). This suggests for adult patients at risk for or having cardiovascular problems who can also tolerate high temperatures that hot yoga may be an effective treatment to improve cardiovascular function. The results also show as has been shown in multiple previous studies that yoga practice improve the physical well-being of the participants.

 

So, hot yoga is superior in improving cardiovascular health.

 

“hot yoga promises a number of compelling health benefits, alleging to cure everything from back pain to high blood pressure to anxiety.” – Anna Dickens

 

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

 

Bourbeau, K. C., Moriarty, T. A., Bellovary, B. N., Bellissimo, G. F., Ducharme, J. B., Haeny, T. J., & Zuhl, M. N. (2021). Cardiovascular, Cellular, and Neural Adaptations to Hot Yoga versus Normal-Temperature Yoga. International Journal of Yoga, 14(2), 115–126. https://doi.org/10.4103/ijoy.IJOY_134_20

 

Abstract

Context:

Chronic heat exposure promotes cardiovascular and cellular adaptations, improving an organism’s ability to tolerate subsequent stressors. Heat exposure may also promote neural adaptations and alter the neural–hormonal stress response. Hot-temperature yoga (HY) combines mind–body exercise with heat exposure. The added heat component in HY may induce cardiovascular and cellular changes, along with neural benefits and modulation of stress hormones.

Aims:

The purpose of the present study is to compare the cardiovascular, cellular heat shock protein 70 (HSP70), neural, and hormonal adaptations of HY versus normal-temperature yoga (NY).

Settings and Design:

Twenty-two subjects (males = 11 and females = 11, 26 ± 6 years) completed 4 weeks of NY (n = 11) or HY (n = 11, 41°C, 40% humidity). Yoga sessions were performed 3 times/week following a modified Bikram protocol.

Subjects and Methods:

Pre- and posttesting included (1) hemodynamic measures during a heat tolerance test and maximal aerobic fitness test; (2) neural and hormonal adaptations using serum brain-derived neurotrophic factor (BDNF) and adrenocorticotropic hormone (ACTH), along with a mental stress questionnaire; and (3) cellular adaptations (HSP70) in peripheral blood mononuclear cells (PBMCs).

Statistical Analysis:

Within- and between-group Student’s t-test analyses were conducted to compare pre- and post-VO2 max, perceived stress, BDNF, HSP70, and ACTH in HY and NY groups.

Results:

Maximal aerobic fitness increased in the HY group only. No evidence of heat acclimation or change in mental stress was observed. Serum BDNF significantly increased in yoga groups combined. Analysis of HSP70 suggested higher expression of HSP70 in the HY group only.

Conclusions:

Twelve sessions of HY promoted cardiovascular fitness and cellular thermotolerance adaptations. Serum BDNF increased in response to yoga (NY + HY) and appeared to not be temperature dependent.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8191229/