Effects of 16-week Tai Chi intervention on postural stability and associated physiological factors in older people  

作　　者：洪友廉[1] 

机构地区：[1]香港中文大学体育运动科学系

出　　处：《山东体育学院学报》2007年第4期1-6,共6页Journal of Shandong Sport University

摘　　要：Objectives:To examine the effects of 16-week Tai Chi(TC) training on postural stability and associated physiological factors in older subjects,forty elderly individuals(aged ≥ 60 years) living in the community were randomly placed into either the TC intervention group(n=22) or the control group(n=18).The former underwent a supervised TC exercise program for 16 weeks,while the latter received general education for a comparable time period.Measurements:Postural stability was assessed by timed stance tests in single-leg stance with the eyes open(SLO) or closed(SLC),and tandem stance with the eyes closed(TSC).Proprioceptive function was evaluated by measuring ankle and knee kinesthesia.The maximum concentric strength of the knee flexors and extensors,ankle plantarflexors and dorsiflexors was measured by isokinetic dynamometer.Moreover,the reaction time of different muscles in the lower extremity was also examined by measuring the onset latency of the muscles to perturbations on the ankle joint using an electromyography system.Results:After the 16-week TC intervention,significant TC training effects were gained on knee kinesthesia,knee flexor strength,latency of semitendinous muscle,and postural stability in SLO.For the other measures,no significant training effects were found.Conclusions:The 16-week TC intervention was found to be beneficial for the improvement of postural stability and associated physiological factors.However,there are discrepancies in TC training effects on different factors in the sensorimotor system.Objectives ：To examine the effects of 16 - week Tai Chi （TC） training on postural stability and associated physiological factors in older subjects, forty elderly individuals （aged 1〉 60 years） living in the community were randomly placed into either the TC intervention group （n = 22） or the control group （n = 18） .The former underwent a supervised TC exercise program for 16 weeks, while the latter received general education for a comparable time period. Measurements ：Postural stability was assessed by timed stance tests in singleleg stance with the eyes open （SLO） or closed （SLC） ,and tandem stance with the eyes closed （TSC）. Proprioceptive function was evaluated by measuring ankle and knee kinesthesia. The maximum concentric strength of the knee flexors and extensors, ankle plantarflexors and dorsiflexors was measured by isokinetic dynamometer. Moreover, the reaction time of different muscles in the lower extremity was also examined by measuring the onset latency of the muscles to perturbations on the ankle joint using an electromyography system. Results ： After the 16 - week TC intervention, significant TC training effects were gained on knee kinesthesia, knee flexor strength, latency of semitendinous muscle, and postural stability in SLO. For the other measures, no significant training effects were found. Conclusions ： The 16 - week TC intervention was found to be beneficial for the improvement of postural stability and associated physiological factors. However, there are discrepancies in TC training effects on different factors in the sensorimotor system.

关 键 词：老年人 生理因素 姿势稳定性 太极拳 心理感觉运动系统 成熟过程 

分 类 号：G852.11[文化科学—民族体育]