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タイトル: | Scapular kinematic and shoulder muscle activity alterations after serratus anterior muscle fatigue |
著者: | Umehara, Jun Kusano, Ken Nakamura, Masatoshi Morishita, Katsuyuki Nishishita, Satoru Tanaka, Hiroki Shimizu, Itsuroh Ichihashi, Noriaki https://orcid.org/0000-0003-2508-2172 (unconfirmed) |
著者名の別形: | 梅原, 潤 草野, 拳 中村, 雅俊 西下, 智 田中, 浩基 清水, 厳郎 市橋, 則明 |
キーワード: | Shoulder scapula fatigue serratus anterior muscle biomechanics rehabilitation |
発行日: | Jul-2018 |
出版者: | Mosby Inc. |
誌名: | Journal of Shoulder and Elbow Surgery |
巻: | 27 |
開始ページ: | 1205 |
終了ページ: | 1213 |
抄録: | Background: Although the serratus anterior muscle has an important role in scapular movement, no study to date has investigated the effect of serratus anterior fatigue on scapular kinematics and shoulder muscle activity. The purpose of this study was to clarify the effect of serratus anterior fatigue on scapular movement and shoulder muscle activity. Methods: The study participants were 16 healthy men. Electrical muscle stimulation was used to fatigue the serratus anterior muscle. Shoulder muscle strength and endurance, scapular movement, and muscle activity were measured before and after the fatigue task. The muscle activity of the serratus anterior, upper and lower trapezius, anterior and middle deltoid, and infraspinatus muscles was recorded, and the median power frequency of these muscles was calculated to examine the degree of muscle fatigue. Results: The muscle endurance and median power frequency of the serratus anterior muscle decreased after the fatigue tasks, whereas the muscle activities of the serratus anterior, upper trapezius, and infraspinatus muscles increased. External rotation of the scapula at the shoulder elevated position increased after the fatigue task. Conclusion: Selective serratus anterior fatigue due to electric muscle stimulation decreased the serratus anterior endurance at the flexed shoulder position. Furthermore, the muscle activities of the serratus anterior, upper trapezius, and infraspinatus increased and the scapular external rotation was greater after serratus anterior fatigue. These results suggest that the rotator cuff and scapular muscle compensated to avoid the increase in internal rotation of the scapula caused by the dysfunction of the serratus anterior muscle. |
著作権等: | © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/244284 |
DOI(出版社版): | 10.1016/j.jse.2018.01.009 |
PubMed ID: | 29478944 |
出現コレクション: | 学術雑誌掲載論文等 |
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