Evaluation of fatigue patterns in individual shoulder muscles under various external conditions
- Title
- Evaluation of fatigue patterns in individual shoulder muscles under various external conditions
- Author
- 김정룡
- Keywords
- Houlder injury; Muscle-specific intervention; Fatiguing pattern; Normalized median power frequency; Rating of perceived exertion
- Issue Date
- 2021-02
- Publisher
- ELSEVIER SCI LTD
- Citation
- APPLIED ERGONOMICS, v. 91, Article no. 103280, 10pp
- Abstract
- For shoulder muscle prevention, we investigated individual shoulder muscle performance and fatigue patterns in various external conditions, including three different % maximum voluntary contractions, six shoulder angles and 60-s durations of exertion. The rating of perceived exertion was also measured for comparison. The upper trapezius (UT), middle deltoid (MD), pectoralis major (PM), latissimus dorsi (LD) and serratus anterior (SA) were selected for assessment. Normalized median power frequency electromyograms were calculated for quantitative fatigue evaluation in ten participants. UT muscle was severely fatigued by extreme flexion angle rather than weight. MD muscle was the most rapidly fatigued after 15 s duration. SA muscle was more fatigued at 0° than 30° adduction. LD and PM muscle fatigue were mostly due to external workload. This muscle specific outcome could help practitioners to design an intervention program targeting particular shoulder injury.
- URI
- https://www.sciencedirect.com/science/article/pii/S0003687020302295https://repository.hanyang.ac.kr/handle/20.500.11754/166971
- ISSN
- 0003-6870
- DOI
- 10.1016/j.apergo.2020.103280
- Appears in Collections:
- ETC[S] > 연구정보
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