著者

筒井 廣明 管 直樹 山口 光國 山本 龍二 三原 研一 保刈 成 上里 元 鈴木 一秀 大島 和 内川 友義

出版者

Japan Shoulder Society

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.19, no.2, pp.310-316, 1995

---

Purpose<br>The purpose of this study is to recognize the effect of exercise for cuff muscles using EMG.<br>Materials and Methods<br>5 healthy young men, aged from 17 to 29 yrs., were examined. The "resisted external rotation"exercise for the infraspinatus muscle was estimated. The Cuff-Y exercise with a yellow Thera-Band and F. W. Jobe's strengthening exercise with a 1.5kg weight were compared. During the exercises, the infraspinatus, the supraspinatus, the deltoid, and the middle fiber of the trapezius were examined with EMG. The EMG was recorded continuously from the beginning for 5 minutes.<br>Results<br>The exercise withe the yellow Thera-Band could dominate the activity of the infraspinatus muscle compared to other muscles. As for the exercises with a 1.5kg weight, it was difficult to keep the activity of the infraspinatus advantageous and the 5 volunteers demonstrated five different patterns of muscle activity. Furthermore, the relative activity of the infraspinatus gradually decreased with time.<br>Conclusion<br>Exercises for cuff muscles should be carried out to keep the dominant activity of the targeted muscle compared to other muscles. The setting of the load and time limit both failed and the purpose of the exercise could not be attained.

著者

山口 光國 筒井 廣明 山本 龍二 三原 研一 保刈 成 鈴木 一秀 上里 元 大島 和 内川 友義 菅 直樹 牧内 大輔

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.20, no.2, pp.325-328, 1996-11-30 (Released:2012-11-20)

参考文献数

4

---

PurposeWe investigated the muscle strength of the scapulothoracie joint which is apt to be affected by the position of other joints.

著者

筒井 廣明 山口 光國 山本 龍二 三原 研一 保刈 成 鈴木 一秀 上里 元 大島 和 内川 友義 菅 直樹 牧内 大輔

出版者

日本肩関節学会

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.20, no.2, pp.337-340, 1996-11-30 (Released:2012-11-20)

参考文献数

6

被引用文献数

1

---

[Purpose]Cuff exercises are usually performed to improve the shoulder function and to keep the condition of the shoulder of throwing athletes. Thus, there are a large number of athletes who could not acquire the expected effects of the exercises. In this study, we examined the estimation of the cuff function and the daily exercises of the athletes electromyographically.

著者

鈴木 一秀 南 和延 筒井 廣明 三原 研一 保刈 成 上里 元 内川 友義 菅 直樹 大田 勝弘 牧内 大輔

出版者

Japan Shoulder Society

雑誌

肩関節 (ISSN:09104461)

巻号頁・発行日

vol.23, no.3, pp.373-376, 1999

---

[Purpose] The purpose of this study is to analyze the influence of the scapulothoracic joint on the rotator cuff function using integrated electromyography.<BR>[Materials and Methods] Ten shoulders of ten young males who were diagnosed as having dysfunction of scapulothoracic joint with &lceil;Scapula-45&rfloor; radiography and resisted abduction and external rotation test. The activities of the supraspinatus, infraspinatus, deltoid, and biceps were evaluated electromyographically with the loads at 45 degrees elevated position in the scapular plane. Subsequently the activity of these muscles was collected with a manual assist to the scapulothoracic function. The EMG activity was expressed as a percentage of the Max MMT (%MMT).<BR>[Results] The EMG activity increased with the load in all the cases. In 80% of the total cases, the relationship between the supraspinatus and deltoid did not change irrespective of the load (deltoid/supuraspinatus=1 /1.3) without manual assistance. The %MMT of the supraspinatus and deltoid of these cases showed a significant difference between the activity with and that without manual assistance. The tendency was remarkable at 3kg load. In 20% of the total cases, a dysfunction of rotator cuff was noted.<BR>[Conclusion] The results suggest the function of scapulothoracic joint has an effect on the rotator cuff function.