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J Am Geriatr Soc. 2012 May;60(5):841-8. doi: 10.1111/j.1532-5415.2012.03928.x.

Effectiveness of tai chi as a community-based falls prevention intervention: a randomized controlled trial.

Author information

  • 1Faculty of Health and Environmental Sciences, Health and Rehabilitation Research Institute, AUT University, Auckland, New Zealand. denise.taylor@aut.ac.nz

Abstract

OBJECTIVES:

To compare the effectiveness of tai chi and low-level exercise in reducing falls in older adults; to determine whether mobility, balance, and lower limb strength improved and whether higher doses of tai chi resulted in greater effect.

DESIGN:

Randomized controlled trial.

SETTING:

Eleven sites throughout New Zealand.

PARTICIPANTS:

Six hundred eighty-four community-residing older adults (mean age 74.5; 73% female) with at least one falls risk factor.

INTERVENTION:

Tai chi once a week (TC1) (n = 233); tai chi twice a week (TC2) (n = 220), or a low-level exercise program control group (LLE) (n = 231) for 20 wks.

MEASUREMENTS:

Number of falls was ascertained according to monthly falls calendars. Mobility (Timed-Up-and-Go Test), balance (step test), and lower limb strength (chair stand test) were assessed.

RESULTS:

The adjusted incident rate ratio (IRR) for falls was not significantly different between the TC1 and LLE groups (IRR = 1.05, 95% confidence interval (CI) = 0.83-1.33, P = .70) or between the TC2 and LLE groups (IRR = 0.88, 95% CI = 0.68-1.16, P = .37). Adjusted multilevel mixed-effects Poisson regression showed a significant reduction in logarithmic mean fall rate of -0.050 (95% CI = -0.064 to -0.037, P < .001) per month for all groups. Multilevel fixed-effects analyses indicated improvements in balance (P < .001 right and left leg) and lower limb strength (P < .001) but not mobility (P = .54) in all groups over time, with no differences between the groups (P = .37 (right leg), P = .66 (left leg), P = .21, and P = .44, respectively).

CONCLUSION:

There was no difference in falls rates between the groups, with falls reducing similarly (mean falls rate reduction of 58%) over the 17-month follow-up period. Strength and balance improved similarly in all groups over time.

© 2012, Copyright the Authors Journal compilation © 2012, The American Geriatrics Society.

PMID:
22587850
[PubMed - indexed for MEDLINE]
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