Physical-Performance Outcomes and Biomechanical Correlates from the 32-Week Yoga Empowers Seniors Study

Area of Science:

• Gerontology
• Exercise Physiology
• Biomedical Engineering

Background:

• The Yoga Empowers Seniors Study (YESS) utilized biomechanical methods to assess the physical demands of yoga.
• Previous research has established the biomechanical requirements of various yoga poses.

Purpose of the Study:

• To evaluate the efficacy of a modified Hatha yoga program on physical function in older adults.
• To assess changes in functional performance, flexibility, muscle strength, and balance over a 32-week period.

Main Methods:

• Twenty community-dwelling older adults (mean age 70.7 years) participated in biweekly 60-minute Hatha yoga classes for 32 weeks.
• Physical function was measured at baseline, 16 weeks, and 32 weeks, encompassing functional performance, flexibility, muscle strength, and balance.
• Repeated-measures ANOVA and Tukey's post hoc tests were used for statistical analysis.

Main Results:

• Significant improvements were observed in timed chair stands, 8-foot up and go test, 2-minute step test, and vertical reach.
• Isometric knee flexor strength and heel rise repetitions also increased significantly.
• No significant changes were found in flexibility or balance measures.

Conclusions:

• A modified Hatha yoga program can lead to significant enhancements in physical function and lower-extremity muscle strength in seniors.
• These observed physical adaptations align with the biomechanical demands of the yoga poses practiced.