The effects of muscle fatigue on shoulder joint position sense
The effects of muscle fatigue on shoulder joint position sense
复制标题
DOI：
10.1177/03635465980260021701
复制
发表时间：
1998-03-01
影响因子：
4.8
通讯作者：
Pellizzon, GG
中科院分区：
文献类型：
--
作者：
Carpenter, JE;Blasier, RB;Pellizzon, GG
本体感觉或关节位置感可能在肩关节功能中起重要作用。在这项研究中，我们评估了20名无肩关节异常的志愿者肌肉疲劳对肩关节本体感觉的影响。测量肩关节本体感觉作为首次检测肱骨旋转的阈值，关节外展90度和外旋90度。受试者在休息时进行测试，在等速测试机上锻炼直到疲劳，然后以相同的方式重新测试。测试两个肩关节，优势肩关节和非优势肩关节的顺序是随机的。肩部本体感觉分析其依赖于手臂优势，旋转方向和肌肉疲劳。受试者检测到外旋后，显着减少运动比他们没有内旋。总体而言，运动前，运动后检测到的平均旋转0.92度。运动后，检测运动的阈值增加到1.59度，增加了73%。这一显著增加发生在内部和外部旋转。随着肌肉疲劳，本体感觉的减少可能在降低运动成绩和疲劳相关的肩功能障碍中起作用。训练是否能减少这种位置感的丧失还有待确定。
Proprioception, or joint position sense, probably plays an important role in shoulder joint function. In this study, we assessed the effect of muscle fatigue on shoulder proprioception in 20 volunteers with no shoulder abnormalities. Shoulder proprioception was measured as the threshold to first detection of humeral rotation with the joint at 90 degrees of abduction and 90 degrees of external rotation. Subjects were tested while rested, exercised on a isokinetic testing machine until fatigued, and then retested in an identical fashion. Both shoulders were tested, and the order of dominant and nondominant shoulder was randomized. Shoulder proprioception was analyzed for its dependence on arm dominance, direction of rotation, and muscle fatigue. Subjects detected external rotation after significantly less movement than they did internal rotation. Overall, before exercise, motion was detected after a mean of 0.92 degrees of rotation. After exercise, this threshold to detection of movement increased to 1.59 degrees, an increase of 73%. This significant increase occurred with both internal and external rotation. The decrease in proprioceptive sense with muscle fatigue may play a role in decreasing athletic performance and in fatigue-related shoulder dysfunction. It remains to be determined if training can lessen this loss in position sense.