Tai Chi for Reducing Dual-task Gait Variability, a Potential Mediator of Fall Risk in Parkinson's Disease: A Pilot...

Area of Science:

• Neurology
• Rehabilitation Medicine
• Integrative Medicine

Background:

• Parkinson's disease (PD) is a neurodegenerative disorder affecting motor control.
• Tai Chi (TC) is a mind-body exercise showing potential benefits for PD symptoms.
• Feasibility studies are crucial for designing effective randomized controlled trials (RCTs) for PD interventions.

Purpose of the Study:

• To determine the feasibility of a full-scale RCT evaluating Tai Chi (TC) for Parkinson's disease (PD).
• To identify optimal outcome measures for TC interventions in PD patients during off-medication states.
• To inform the design of future large-scale RCTs for TC in PD.

Main Methods:

• A two-arm, wait-list controlled randomized controlled trial (RCT) was conducted.
• Thirty-two participants with idiopathic PD were enrolled in a tertiary care setting.
• A six-month Tai Chi (TC) intervention was compared against usual care (UC) alone, with assessments during off-medication states.

Main Results:

• Recruitment rate was 0.08 subjects per day, and adherence to TC was 75%.
• No adverse events were reported during the TC intervention.
• While not statistically significant, trends favored TC in dual-task gait stride-time variability (STV), balance confidence (ABC), and quality of life (PDQ-39).

Conclusions:

• A randomized controlled trial (RCT) for Tai Chi (TC) in Parkinson's disease (PD) is feasible.
• Improvements in recruitment and adherence strategies are necessary for future studies.
• Dual-task gait stride-time variability (STV) is a sensitive outcome measure for assessing cognitive-motor benefits of TC in PD.