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ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2021 October;61(10):1333-8

DOI: 10.23736/S0022-4707.20.11752-3

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Comparisons of tai chi and Iyengar yoga intervention effects on muscle strength, balance, and confidence in balance

Renkun ZHU 1, Wenjin WANG 2, Li ZHAO 3, Shanshan MAO 4

1 China Basketball College, Beijing Sport University, Beijing, China; 2 School of Kinesiology, Shanghai University of Sport, Shanghai, China; 3 School of Kinesiology, Beijing Sport University, Beijing, China; 4 School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China



BACKGROUND: The aim of the study is to compare a 16-week tai chi and Iyengar yoga program effects on muscle strength, static and dynamic balance, and balance confidence in elderly people.
METHODS: A total of 48 participants (≥60 years old) without mobility-impairing neurological disease, dementia, cardiovascular disease/symptoms during moderate exercise, poorly controlled hypertension, or balance-impairing drug use. Participants were divided into a tai chi group, an Iyengar yoga group, and a control group (eight males and eight females per group), using a restricted randomization scheme generated by software. While the former two undertook 16-week exercise programs, the control group received general education. Maximum concentric strength was measured with an isokinetic dynamometer. The one-legged stand with eyes closed, “8 feet up and go,” and Activities-specific Balance Confidence (ABC) scale were used to assess static balance, dynamic balance, and balance confidence in daily activities, respectively.
RESULTS: Both programs improved all measures significantly with tai chi being more effective for increasing knee flexor strength (P=0.045) and extensor strength (P=0.032) and ABC score (P=0.034); Iyengar yoga was more effective for improving static balance (P=0.014) and dynamic balance (P=0.025; all P values here vs. the other program).
CONCLUSIONS: Tai chi and Iyengar yoga can improve strength, balance, and balance confidence among older people. Both are suitable exercise choices for older adults.


KEY WORDS: Muscle strength; Postural balance; Aged; Accidental falls

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