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老年人最大伸膝動作時的肌力與肌電RMS特征

發(fā)布時間:2019-02-17 11:08
【摘要】:目的研究老年人、年輕人在完成最大伸膝動作時的肌力與肌電特征。方法研究選擇48位受試者,老年人32位,年輕人16位,共分為6組,包括年輕男女組、常鍛煉老年男女組、不常鍛煉老年男女組,受試者以角速度60°/s與180°/s在等速肌力測試系統(tǒng)進(jìn)行5次最大伸膝測試,同時進(jìn)行肌電測試,測量股四頭肌的相對100%MVC、100%MVC時的相對RMS值等指標(biāo)。結(jié)果不常鍛煉老年人相對肌力要顯著低于其他組,常鍛煉女性老年人的相對100%MVC數(shù)值明顯高于其他老年人,快速收縮狀態(tài)下女性老年人大腿優(yōu)勢側(cè)相對肌力更差;在伸膝動作中,各組受試者股外肌、股直肌、股內(nèi)肌100%MVC時的相對RMS值常鍛煉老年人與年輕人更接近。結(jié)論運動對老年人相對肌力、肌電信號改善效果非常顯著,特別是對女性老年人效果更好。因受試者個人的運動習(xí)慣、運動項目不同,各塊肌肉發(fā)揮的作用也不同。
[Abstract]:Objective to study the myodynamic and electromyoelectric characteristics of the elderly and young people. Methods A total of 48 subjects, 32 elderly and 16 young, were divided into 6 groups, including young men and women, old men and women who exercised frequently, old men and women who did not exercise frequently. In the isokinetic muscle strength test system, the maximal extensor knee was tested five times with the angular velocity of 60 擄/ s and 180 擄/ s, and the myoelectric test was carried out at the same time. The relative RMS value of the quadriceps femoris muscle was measured at 100MVC / s and 100MVC. Results the relative muscle strength of the elderly who did not exercise regularly was significantly lower than that of the other groups, and the relative 100%MVC value of the elderly who exercised frequently was significantly higher than that of the other elderly people. The relative muscle strength of the dominant side of the thigh of the elderly women was worse under the condition of rapid contraction. In extensor knee movement, the relative RMS values of the external femoral muscle, rectus femoris muscle and medial muscle of each group were more similar to those of the young people. Conclusion exercise can improve the relative muscle strength and electromyography of the elderly, especially for the elderly women. Each muscle plays a different role because of the subjects' individual exercise habits and exercise events.
【作者單位】: 紹興文理學(xué)院體育學(xué)院;
【基金】:浙江省自然科學(xué)基金項目(LY14C110001)
【分類號】:R87

【參考文獻(xiàn)】

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