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Arch Phys Med Rehabil. 2000 May;81(5):604-7.

Tai Chi Chuan to improve muscular strength and endurance in elderly individuals: a pilot study.

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1
Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei.

Abstract

OBJECTIVE:

To evaluate the training effect of a Tai Chi Chuan (TCC) program on knee extensor muscular strength and endurance in elderly individuals.

DESIGN:

Before-after trial.

SETTING:

Community setting.

PARTICIPANTS:

Forty-one community dwelling subjects aged 61.1 +/- 9.8 years undertook a TCC program. Nine dropped out during the study. Pretraining and posttraining measurements were obtained from 15 men and 17 women.

INTERVENTION:

Subjects participated in a 6-month TCC program. Each session consisted of 20 minutes of warm-up, 24 minutes of structured TCC training, and 10 minutes of cool-down exercises.

MAIN OUTCOME MEASURES:

Peak torque of dominant and nondominant knee extensors was tested at speeds of 60 degrees , 180 degrees , and 240 degrees/sec concentrically and eccentrically. Muscular endurance of the knee extensor was tested at the speed of 180 degrees /sec.

RESULTS:

In the group of men, concentric knee extensor peak torque increased by 15.1% to 20.0% and eccentric peak torque increased by 15.1% to 23.7%. The group of women also showed increases, ranging from 13.5% to 21.8% in concentric peak torque, and 18.3% to 23.8% in eccentric peak torque. In addition, the knee extensor endurance ratio increased by 9.6% to 18.8% in the men and 10.1% to 14.6% in the women.

CONCLUSION:

TCC training may enhance muscular strength and endurance of knee extensors in elderly individuals.

PMID:
10807099
[Indexed for MEDLINE]
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