Impact of Yoga on Postural Stability in Stroke

Deficits in motor capacity following stroke poses a potential threat to postural stability. The purpose of the study was to assess the impact of yoga training on postural alignment, anticipatory postural adjustments, and compensatory postural adjustments in individuals with chronic stroke deficits. This study is a subset analysis from a prospective, randomized control trial using therapeutic yoga. Twenty one individuals with chronic motor deficits from stroke participated in an hour-long group yoga sessions twice a week for 8 weeks focusing on progressively challenging postures, breathing, and meditation in sitting, standing, and supine positions. Postural symmetry, compensatory postural adjustment, and anticipatory postural adjustment from the NeuroCom SMART Balance Master® were used to evaluate changes in postural stability. The Berg Balance Scale was used to evaluate correlations to changes in dynamic balance control. Prior to participation in yoga, significant weight distribution asymmetry was observed during full upright standing. After 8 weeks of yoga training, there were no significant differences in weight distribution between right and left legs at 0 degrees. Subjects demonstrated greater than 50% improvement in symmetry alignment for different standing positions. No significant changes in compensatory or anticipatory postural adjustments were seen following yoga training. Changes in functional BBS scores were significantly correlated to changes in upright standing symmetry. Yoga training may improve postural symmetry enhancing postural control decreasing the risk for falls in individuals with deficits from chronic stroke.