中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (2): 303-306.doi: 10.3969/j.issn.1673-8225.2012.02.026

• 组织构建与生物力学 tissue construction and biomechanics • 上一篇    下一篇

髌腱末端病运动员膝关节屈伸峰力矩和表面肌电图的特征☆

岳春林，王国祥，王文军   

  1. 苏州大学体育学院，江苏省苏州市  215021
  • 收稿日期:2011-07-05 修回日期:2011-07-14 出版日期:2012-01-08 发布日期:2012-01-08
  • 通讯作者: 王文军，硕士，讲师，苏州大学体育学院，江苏省苏州市 215021
  • 作者简介:2011-07-05岳春林☆，男，1974年生，江西省南昌市人，博士，讲师，主要从事应用生理学方向的研究。

Characteristics of surface electromyography and peak torque of knee extension and flexion in athletes with patellar tendinopathy

Yue Chun-lin, Wang Guo-xiang, Wang Wen-jun   

  1. Physical Education College of Soochow University, Suzhou  215021, Jiangsu Province, China
  • Received:2011-07-05 Revised:2011-07-14 Online:2012-01-08 Published:2012-01-08
  • Contact: Wang Wen-jun, Master, Lecturer, Physical Education College of Soochow University, Suzhou 215021, Jiangsu Province, China wangwj0729@sina.com
  • About author:Yue Chun-lin☆, Doctor, Lecturer, Physical Education College of Soochow University, Suzhou 215021, Jiangsu Province, China

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摘要：

背景：髌腱末端病是腱止点部位的微细损伤，股四头肌群中的股内侧肌与股外侧肌之间的力量平衡发生变化，可直接导致髌骨产生异常运动从而对腱止点部位产生影响。
目的：分析髌腱末端病发生机制和髌腱末端病对膝关节及其周围肌肉活动产生的影响。
方法：选择10名患有髌骨肌腱病的男运动员及10名运动项目、身高和年龄匹配的正常男运动员，采用瑞士CON-TREX等速肌力测试与训练系统，分别进行膝关节力量和表面肌电图的测试，比较与分析膝关节屈肌力矩、伸肌力矩和股四头肌表面肌电图的变化。
结果与结论：发现在等长运动时，末端病组的伸肌伸肌峰力矩明显小于对照组、峰值转矩比比值明显大于对照组；在等速运动时，末端病组的伸肌伸肌峰力矩明显小于对照组，并随着运动角速度增加而变化显著，而峰值转矩比比值均不同程高于对照组；末端病组的股内侧肌/股外侧肌的整合肌电图比值在等长运动和等速运动时，均明显低于对照组。提示髌腱末端病运动员膝关节屈肌与伸肌的力量差距较为突出，存在股内侧肌活动低下和股内侧肌与股外侧肌之间不平衡的现象。

关键词: 髌腱末端病, 运动员, 等长运动, 等速运动, 表面肌电图

Abstract:

BACKGROUND: Patellar tendinopathy is tiny damage at tendon insertion. Changes in the strength balance between vastus medialis and vastus lateralis in the quadriceps may lead to patellar abnormal motion, even an impact to the tendon insertion.
OBJECTIVE: To analyze the mechanism and influence of patellar tendinopathy on the knee joint and surrounding muscles motion.
METHODS: Ten male athletes with patellar tendinopathy and ten male athletes with matched sports item, body height and age were selected, and the knee-joint strength and surface electromyography were tested using CON-TREX Isokinetic Measurement System. The change of knee-joint flexor peak torque, extensor peak torque and surface electromyography of the quadriceps were compared with and analyzed.
RESULTS AND CONCLUSION: Result showed during isometric exercise, extensor peak torque of the patellar tendinopathy group was significantly lower than the control group, and ratio of flexor peak torque to extensor peak torque was significantly higher than the control group; during isokinetic exercise, extensor peak torque of the patellar tendinopathy group was significant smaller than that of the control group, and notably changed with the increasing motion angular velocity; during isometric exercise and isokinetic exercise, the ratios of vastus medialis/vastus lateralis of the patellar tendinopathy group were lower than that of the control group. There were significant differences between knee-joint flexor and extensor of patellar tendinopathy athlete. The activity of vastus lateralis is low and vastus medialis and vastus lateralis are not in balance.

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