던지기 스포츠선수들의 어깨관절의 특성과 견갑골의 자세변화가 회선근력에 미치는 영향 (Influence of Isokinetic Shoulder Rotation Strength by Altered Shoulder Posture and Characteristics of Shoulder Joint in Overhead Throwers)

서지정보

· 발행기관 : 한국생활환경학회
· 수록지 정보 : 한국생활환경학회지 / 19권 / 6호 / 817 ~ 824페이지
· 저자명 : 박시영, 김훈

초록

Shoulder injuries are influenced by collapse of the balance between the thoracic vertebra and the shoulder girdle alignment to the kinematics and the shoulder joint muscular strength. The purpose of study was to investigate the relationships among shoulder postures and humeral head retroversion (HHR), and to measure the effect of scapula neutral (SN) and scapula protracted (SP) on shoulder internal (IR) and external rotation (ER) muscle strength. Subjects in this investigation were 10 men with no history of shoulder injury or disorders. They all participated in overhead sports at least three days a week, and volunteered to participate in this study. They performed IR and ER concentric contraction in 2 scapular positions (SN and SP). They measured forward shoulder head posture (FSP), pectoralis minor length (PML), range of motion (ROM), HHR on dominant and non-dominant. There is a pattern of increased ER and decreased IR in the dominant shoulder that significantly correlates with an increase in HHR. The HHR demonstrated the negative correlation with FSH and ROM for IR, and positive correlation with PML. Isokinetic muscle strength was smaller for SP compared with SN. These postural changes are thought to occur concurrently with an imbalance of the musculature, and rehabilitation program commonly involves addressing both posture and muscle imbalance. The potential adverse effects of scapular protraction on shoulder rotation strength should be considered during the evaluation and treatment of shoulder pain for overhead throwers.

영어초록

Shoulder injuries are influenced by collapse of the balance between the thoracic vertebra and the shoulder girdle alignment to the kinematics and the shoulder joint muscular strength. The purpose of study was to investigate the relationships among shoulder postures and humeral head retroversion (HHR), and to measure the effect of scapula neutral (SN) and scapula protracted (SP) on shoulder internal (IR) and external rotation (ER) muscle strength. Subjects in this investigation were 10 men with no history of shoulder injury or disorders. They all participated in overhead sports at least three days a week, and volunteered to participate in this study. They performed IR and ER concentric contraction in 2 scapular positions (SN and SP). They measured forward shoulder head posture (FSP), pectoralis minor length (PML), range of motion (ROM), HHR on dominant and non-dominant. There is a pattern of increased ER and decreased IR in the dominant shoulder that significantly correlates with an increase in HHR. The HHR demonstrated the negative correlation with FSH and ROM for IR, and positive correlation with PML. Isokinetic muscle strength was smaller for SP compared with SN. These postural changes are thought to occur concurrently with an imbalance of the musculature, and rehabilitation program commonly involves addressing both posture and muscle imbalance. The potential adverse effects of scapular protraction on shoulder rotation strength should be considered during the evaluation and treatment of shoulder pain for overhead throwers.

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