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題 名 | Gain of Muscle Torque at Low and High Speed after Isokinetic Knee Strengthening Program in Healthy Young and Older Adults=不同速度的膝部等速肌力訓練對年輕與年長者肌力之評估 |
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作 者 | 詹美華; 王淑芬; 鄭誠功; 陳昭瑩; | 書刊名 | 臺灣醫學會雜誌 |
卷 期 | 97:5 1998.05[民87.05] |
頁 次 | 頁339-344 |
分類號 | 418.92 |
關鍵詞 | 膝部; 等速肌力訓練; 年輕; 年長者; 肌力; Elderly; Isokinetics; Strengthening exercise; Knee; |
語 文 | 英文(English) |
英文摘要 | Low-speed isokinetic exercise has been recommended to exert a maximal contraction and produce greater muscle torque than high-speed exercise in young adults. The purpose of this study was to compare the effectiveness of low- and high- speed isokinetic exercise programs for increasing muscle torque in young and elderly people. Twenty healthy elderly and 20 young subjects participated. The elderly subjects were divided into two groups. One group performed high-speed (300°/s) isokinetic exercise training three times a week for the dominant-side knee extensor and low-speed (6O°/s) exercise for the non-dominant side for 6 weeks. The other group was trained using the reverse exercise regime. The training program for the young subjects was the same as that for the elderly groups. All subjects had their knee extensor torque evaluated with an isokinetic test before and at 2-week intervals during the training program. For young and elderly groups, both high- and low-speed isokinetic exercise training increased extensor torque in low- and high-speed tests. For the young group, low-speed exercise effectively improved muscle torque at low and high speeds. The improvement in slow muscle torque was significantly greater than that in fast muscle torque. For the elderly subjects, high-speed isokinetic exercise produced the greatest muscle torque at high speed in the first 2 weeks of training, and demonstrated a sharp increase in muscle torque in the final 2 weeks. Low-speed exercise frequently caused knee stress and the inability of some elder subjects to continue the exercises with maximal effort. Our findings indicate that high-speed exercise may be more appropriate for the elderly, and low-speed exercise may be more appropriate for younger people. |
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