“One of the many misconceptions about the blind is that they have greater hearing, sense of smell and sense of touch than sighted people. This is not strictly true. Their blindness simply forces them to recognize gifts they always had but had heretofore largely ignored.” – Rosemary Mahoney
Falls are a standard of slapstick comedy and Americas Funniest Home Videos. But, falls are far from funny. They can cause serious injury and even death. “One out of five falls causes a serious injury such as broken bones or a head injury. Each year, 2.5 million older people are treated in emergency departments for fall injuries. Over 700,000 patients a year are hospitalized because of a fall injury, most often because of a head injury or hip fracture. Each year at least 250,000 older people are hospitalized for hip fractures. More than 95% of hip fractures are caused by falling,6 usually by falling sideways. Falls are the most common cause of traumatic brain injuries (TBI). Adjusted for inflation, the direct medical costs for fall injuries are $34 billion annually.” (Centers for Disease Control). Approximately 9,500 deaths in older Americans are associated with falls each year, making falls the leading cause of death from injury among people 65 and older.
Physical and sensory fitness and balance are important for the prevention of falls. The visual system is particularly important for maintaining balance and avoiding obstacles. Hence, it is not surprising that the visually impaired are 1.7 times more likely to have a fall and 1.9 times more likely to have multiple falls compared with fully sighted populations. The odds of a hip fracture are between 1.3 and 1.9 times greater for those with reduced visual acuity. So, finding methods to improve balance in the visually impaired may greatly reduce falls and subsequent injury.
Yoga has been shown to improve muscular strength, endurance, and flexibility (see http://contemplative-studies.org/wp/index.php/2015/08/11/improve-physical-health-with-yoga/) and to improve balance (see http://contemplative-studies.org/wp/index.php/2015/12/26/improve-physical-well-being-with-bikram-yoga/). So, it would seem reasonable to predict that yoga training may improve coordination, flexibility, and balance in the visually impaired and as a result reduce injuries.
In today’s Research News article “Ashtanga-Based Yoga Therapy Increases the Sensory Contribution to Postural Stability in Visually-Impaired Persons at Risk for Falls as Measured by the Wii Balance Board: A Pilot Randomized Controlled Trial”
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0129646
Jeter and colleagues developed and pilot tested a yoga program for the legally blind and compared the results to those obtained from a wait-list control group. The participants practiced yoga once a week with an instructor and twice a week at home for eight weeks. As expected yoga produced an increase in lower body strength and flexibility. Using a balance on an unstable platform test they found that after yoga training the blind participants were better able to use somatosensory and vestibular information to maintain balance.
These findings suggest that yoga improves blind individuals physically and increases their balance by making them more sensitive to the information provided by touch and by the balance (vestibular) system. There was no direct test of propensity to fall, but the results suggest that the yoga training would improve balance and thereby lower the likelihood of a fall. It will take further research to directly test this conclusion.
It is clear, however, that yoga can improve sensitivity of the tactile and vestibular stimuli that are important for balance. So, practice yoga to improve balance in the blind.
“To be blind is not miserable; not to be able to bear blindness, that is miserable.”
John Milton
CMCS – Center for Mindfulness and Contemplative Studies
