The Relationship Between Muscle Fatigue and Balance in the Elderly

被引:26
作者
Nam, Hee Seung [1 ]
Park, Dong Sik [1 ]
Kim, Dong Hyun [1 ]
Kang, Hyun Jung [1 ]
Lee, Dong Hun [1 ]
Lee, Sang Hun [1 ]
Her, Jin Gang [2 ]
Woo, Ji Hea [2 ]
Choi, Seung Yeon [1 ]
机构
[1] Hallym Univ, Kangdong Sacred Heart Hosp, Dept Rehabil Med, 150 Seongan Ro, Seoul 134701, South Korea
[2] Hallym Coll, Dept Phys Therapy, Chunchon, South Korea
来源
ANNALS OF REHABILITATION MEDICINE-ARM | 2013年 / 37卷 / 03期
关键词
Balance; Posture; Elderly; Fatigue; Ankle;
D O I
10.5535/arm.2013.37.3.389
中图分类号
R49 [康复医学];
学科分类号
100215 ;
摘要
Objective To investigate the effect of gastrocnemius muscle fatigue on postural control ability in elderly people. Methods Twenty-four healthy elderly people participated in this study. The postural control ability of single leg standing was evaluated with Health Improvement & Management System (HIMS) posturography before and after fatiguing exercises. After evaluating initial postural control ability, the maximal voluntary contraction (MVC) of ankle plantarflexion was assessed using a surface electromyogram from the medial belly of the gastrocnemius muscle. After a 5-minute resting period, subjects began submaximal isometric ankle plantarflexion (40% MVC) until 40% of MVC was dropped below 95% for 5 seconds, or subject couldn't continue working out due to muscle fatigue. And postural control ability was assessed after fatiguing exercise. The mean deviation of center of pressure (COP), length of COP movement, occupied area of COP were measured, and analyzed by paired t-test. Results Mediolateral deviation, length of COP movement, and area of COP occupied were increased after fatiguing exercise of the gastrocnemius muscle. Anteroposterior deviation and length of COP movement were also increased, but had low statistical significance. Conclusion These findings suggest that the gastrocnemius muscle fatigue affects mediolateral stability and accuracy during single leg standing in elderly people. Therefore muscle endurance training is necessary to prevent falls in elderly people.
引用
收藏
页码:389 / 395
页数:7
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