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Tai Chi practitioners have better postural control and selective attention in stepping down with and without a
1Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
European Journal of Applied Physiology
|March 16, 2013
Summary
Older Tai Chi practitioners show better balance and cognitive function than healthy controls, especially when performing tasks simultaneously. This mind-body exercise enhances dual-task performance in seniors.
Area of Science:
- Gerontology and Rehabilitation Sciences
- Neuroscience and Cognitive Psychology
- Integrative and Complementary Medicine
Background:
- Aging is associated with declines in postural stability and cognitive function.
- Dual-task paradigms effectively reveal subtle performance deficits in older adults.
- Tai Chi, a mind-body exercise, is hypothesized to improve motor and cognitive functions.
Purpose of the Study:
- To compare the performance of older Tai Chi practitioners and healthy controls in single-task versus dual-task scenarios.
- To assess postural stability and cognitive performance during a stepping-down task with and without an auditory response task.
- To investigate the benefits of Tai Chi on motor-cognitive integration in older adults.
Main Methods:
- A cross-sectional study involving 28 experienced Tai Chi practitioners (mean age 73.6 years) and 30 healthy controls (mean age 72.4 years).
- Participants performed a 19-cm platform step-down and a 10-second single-leg stance under single-task and dual-task conditions.
- The dual-task involved an auditory Stroop test measuring cognitive performance (error rate, reaction time) and center of pressure (COP) sway for postural stability.
Main Results:
- Tai Chi practitioners exhibited significantly lower error rates in the auditory Stroop test (single-task) and faster reaction times (dual-task) compared to controls.
- Practitioners demonstrated significantly less COP sway area (single-task) and sway path (dual-task) during the stepping-down task.
- Performance differences between groups were more pronounced under dual-task conditions, highlighting improved motor-cognitive integration in Tai Chi practitioners.
Conclusions:
- Experienced Tai Chi practitioners show superior postural stability and cognitive function compared to age-matched healthy controls.
- The benefits of Tai Chi practice are amplified during dual-task performance, suggesting enhanced executive function and inter-sensory integration.
- Tai Chi's mind-and-body nature may contribute to preserving and improving functional abilities in older adults, particularly under challenging conditions.
