Reduced Cognitive-Motor Interference on Voluntary Balance Control in Older Tai Chi Practitioners

Area of Science:

• Gerontology
• Neuroscience
• Integrative and Complementary Medicine

Background:

• Dual-task studies indicate Tai Chi improves postural control and reaction times.
• The impact on voluntary balance control limits and cognitive-motor interference is less understood.
• This study investigates cognitive-motor interference in older Tai Chi practitioners during voluntary balance tasks.

Purpose of the Study:

• To evaluate cognitive-motor interference patterns in older Tai Chi practitioners.
• To examine the effect of a concurrent cognitive task on voluntary balance control.
• To compare attention allocation in Tai Chi practitioners versus non-practitioners.

Main Methods:

• Ten older Tai Chi practitioners and 10 non-practitioners performed a voluntary balance task (weight shifting) under single-task and dual-task (backward counting) conditions.
• Balance outcomes included reaction time, movement velocity, and center of pressure excursion.
• Cognitive performance was measured by correct responses during the cognitive task.

Main Results:

• Tai Chi practitioners exhibited significantly shorter reaction times and faster movement velocities compared to non-practitioners.
• No significant difference was found in maximal center of pressure excursion between groups.
• Practitioners showed significantly lower reaction time and cognitive costs, indicating less cognitive-motor interference.

Conclusions:

• Tai Chi practitioners utilize fewer motor and cognitive resources during complex balance tasks with concurrent cognitive demands.
• Practitioners demonstrate reduced cognitive-motor interference and superior attentional resource allocation.
• Findings suggest long-term Tai Chi practice may mitigate age-related decline in dual-tasking ability and aid in fall prevention.