Evaluation of shoulder proprioception following muscle fatigue

Objective. To investigate the effect of shoulder muscle fatigue on glenohumeral proprioception. Design. A repeated proprioception test was performed. Background. The role of conditioning and fatigue in sport injuries remains controversial. It has been hypothesized that proprioceptive information pla...

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Bibliographic Details
Published in:Clinical biomechanics (Bristol) 2003-11, Vol.18 (9), p.843-847
Main Authors: Lee, Hung-Maan, Liau, Jiann-Jong, Cheng, Cheng-Kung, Tan, Chuan-Ming, Shih, Jui-Tien
Format: Article
Language:English
Subjects:
Adaptation, Psychological - physiology
Adult
Fatigue
Humans
Male
Movement - physiology
Muscle Contraction - physiology
Muscle Fatigue - physiology
Postural Balance - physiology
Posture - physiology
Proprioception
Proprioception - physiology
Shoulder joint
Shoulder Joint - physiology
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Summary:Objective. To investigate the effect of shoulder muscle fatigue on glenohumeral proprioception. Design. A repeated proprioception test was performed. Background. The role of conditioning and fatigue in sport injuries remains controversial. It has been hypothesized that proprioceptive information plays an important role in joint stabilization and that muscle fatigue may alter proprioceptive ability. However, the effect of shoulder muscle fatigue on glenohumeral proprioception is still controversial. Methods. Eleven normal subjects (mean age 27.3 years) participated in this study. Proprioception tests (on the dominant shoulder) were performed in which proprioception of the active reproduced and passive reproduced shoulder position was measured using an isokinetic dynamometer and a proprioception testing apparatus, respectively. The speed of active repositioning was at 2 deg/s and passive repositioning was at 0.5 deg/s. The mean value of maximum voluntary contraction and the number of repetitions for muscle fatigue were recorded. Post-fatigue proprioception test was started within 3 min after muscle fatigue. Results. There was no significant difference of shoulder proprioception between pre- and post-fatigue determinations of passive repositioning in shoulder internal rotation, passive repositioning in external rotation and active repositioning in internal rotation. There was a significant difference between pre- and post-fatigue determination of active repositioning in external shoulder rotation (mean degrees: 2.57 (SD 1.02) vs. 4.96 (SD 1.73), P
ISSN:0268-0033
1879-1271
DOI:10.1016/S0268-0033(03)00151-7