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Effect of Tai Chi on physical function, fall rates and quality of life among older stroke survivors
Ruth E Taylor-Piliae1, Tiffany M Hoke1, Joseph T Hepworth1
1College of Nursing, University of Arizona, Tucson, AZ.
Objective:
To examine the effect of a 12-week Tai Chi (TC) intervention on physical function and quality of life.
Design:
Single-blind, randomized controlled trial.
Setting:
General community.
Participants:
Community-dwelling survivors of stroke (N=145; 47% women; mean age, 70y; time poststroke: 3y; ischemic stroke: 66%; hemiparesis: 73%) who were aged ≥50 years and were ≥3 months poststroke.
Interventions:
Yang style 24-posture short-form TC (n=53), strength and range of movement exercises (SS) (n=44), or usual care (UC) (n=48) for 12 weeks. The TC and SS groups attended a 1-hour class 3 times per week, whereas the UC group had weekly phone calls.
Main Outcome Measures:
Physical function: Short Physical Performance Battery, fall rates, and 2-minute step test; quality of life: Medical Outcomes Study 36-Item Short-Form Health Survey, Center for Epidemiologic Studies Depression Scale, and Pittsburgh Sleep Quality Index.
Results:
During the intervention, TC participants had two thirds fewer falls (5 falls) than the SS (14 falls) and UC (15 falls) groups (χ(2)=5.6, P=.06). There was a significant group by time interaction for the 2-minute step test (F2,142=4.69, P<.01). Post hoc tests indicated that the TC (t53=2.45, P=.02) and SS (t44=4.63, P<.01) groups had significantly better aerobic endurance over time, though not in the UC group (t48=1.58, P=.12). Intervention adherence rates were 85%.
Conclusions:
TC and SS led to improved aerobic endurance, and both are suitable community-based programs that may aid in stroke recovery and community reintegration. Our data suggest that a 12-week TC intervention was more effective in reducing fall rates than SS or UC interventions. Future studies examining the effectiveness of TC as a fall prevention strategy for community-dwelling survivors of stroke are recommended.
