著者
宮下 浩二 小林 寛和 越田 専太郎 浦辺 幸夫
出版者
一般社団法人日本体力医学会
雑誌
体力科学 (ISSN:0039906X)
巻号頁・発行日
vol.58, no.3, pp.379-386, 2009-06-01 (Released:2009-07-28)
参考文献数
31
被引用文献数
3 1

The purpose of this study was to identify the angles of the shoulder complex which consist of glenohumeral joint, scapulothracic joint, and thoracic joint at the maximum external rotation (MER) of the shoulder complex during throwing in baseball players, and to analyze the correlation of each angle.The subjects were 19 collegiate baseball players. Throwing motion data was collected by three high-speed cameras and the three-dimensional (3D) coordinates of the shoulder complex were established by direct leaner translation method for the MER calculation. A 3D analysis was performed to obtain the external rotation (ER) angle of the glenohumeral joint, the posterior tilt angle of the scapula, and the extension angles of thoracic at MER of shoulder complex. The mean (±SD) value of the MER was 145.5±10.3°. The mean (±SD) values of the glenohumeral ER, the scapula posterior tilt angle and the thoracic extension angle at MER were 105.3±16.0°, 24.3±15.0°, and 9.1±7.2°respectively. Multiple linear regression analysis was used to relate the MER angle to each joint angle. The final linear regression model included the posterior tilting angle of scapula ( r=0.56, p<0.05), and external rotation of the glenohumeral joint ( r=0.40, p<0.05). Significant negative correlation was observed between the posterior tilting angle of the scapula and external rotation of the glenohumeral joint ( r=-0.52, p<0.05). This finding suggested that scapula motion could be very important for the prevention of throwing injuries.

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肩の動きと胸郭の可動性を調べているときに出て来た文献。 MERでは胸椎の伸展と肩甲骨の後傾がとても重要だと言うことで、胸椎の可動域低下はパフォーマンス低下ないしは障害発生につながる可能性があると書かれています。 胸椎(胸郭)って… https://t.co/GR90aKcLwc

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