Electromyographic analysis and phase definition of the overhead football throw

被引:55
作者
Kelly, BT [1 ]
Backus, SI [1 ]
Warren, RF [1 ]
Williams, RJ [1 ]
机构
[1] Hosp Special Surg, New York, NY 10021 USA
关键词
D O I
10.1177/03635465020300061401
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Background: The phases of the football throw need definition so that muscle activation patterns during the overhead football throw can be fully described. Hypothesis: Electromyographic analysis of shoulder musculature can better define muscle activation patterns during the football throw. Study Design: Descriptive anatomic study. Methods: Videos of 20 elite-level quarterbacks were reviewed to define phases of the overhead football throw; 14 recreational male athletes underwent electromyography and motion analysis testing. Results: Four sequential phases of the football throw were consistently observed. Early cocking (49% +/- 11% of throw) was initiated at rear foot plant and continued to maximal shoulder abduction and internal rotation. Late cocking (20% +/- 6%) started at maximal shoulder abduction and internal rotation and ended with maximal shoulder external rotation. The acceleration phase (15% +/- 4%) began with maximal shoulder external rotation and ended with ball release. Follow-through (16% +/- 5%) was defined as the phase from ball release to maximal horizontal adduction (across the body). Conclusion: The four phases demonstrated little variation in motion analysis and electromyographic activation between subjects and were associated with muscle activation patterns consistent with upper extremity movements. Clinical Relevance: A clearer understanding of muscle activation patterns may help to explain patterns of muscle injury and improve rehabilitation protocols in football-throwing athletes. (C) 2002 American Orthopaedic Society for Sports Medicine.
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收藏
页码:837 / 844
页数:8
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