고등학교 야구투수의 12주간 견관절 내회전 결손 재활트레이닝이 운동수행능력에 미치는 영향

The Effect of Glenohumeral Internal Rotation Deficit Rehabilitation Training on Exercise Performance & Body Shape Displacement in High-School Baseball Pitchers

The purpose of this study was to investigate the effect of glenohumeral internal rotation deficit rehabilitation training on exercise performance & body shape displacement in high-school baseball pitchers. Research subjects were composed of 27 high-school baseball pitchers in a rehabilitation training center and a hospital in a metropolitan area who have glenohumeral internal rotation deficit (GIRD) and are under rehabilitation or a control group without rehabilitation. They were divided into three types of groups: private trainer for impairment prevention (PIP) rehabilitation training group (n=9), hospital rehabilitation training group (n=8), and general(parallel to exercise without rehabilitation) group (n=10). Observation variables were pre (initial) and post (12weeks) tests (independent variables). The exercise performance tests conducted were isokinetic strength (peak torque, ratio), ROM & GIRD, back strength, grip strength. The body shape displacement test used was frontal plane, sagittal plane, on leg standing (dependent variables). Two-way mixed ANOVA with repeated measure and paired t-test were used for analyzing the data. Results found from such a comparative analysis study were as follows; First(exercise performance), The glenohumeral internal rotation throwing shoulder and glenohumeral external rotation throwing shoulder & non-throwing shoulder (PIP rehabilitation training group) along with the glenohumeral internal rotation non-throwing shoulder (hospital rehabilitation training group) showed a significant difference by the pre-post tests in the isokinetic peak torque (60°/sec). A significant interaction effect appeared in the isokinetic peak torque (60°/sec) of glenohumeral internal rotation throwing shoulder & non-throwing shoulder and glenohumeral external rotation throwing shoulder & non-throwing shoulder. Glenohumeral rotation throwing shoulder & non-throwing shoulder didn t show a significant difference among the group in isokinetic strength ratio (60°/sec). The PIP rehabilitation training group showed a significant difference by the pre-post tests in the isokinetic strength ratio (60°/sec). A significant interaction effect in isokinetic strength ratio (60°/sec)with glenohumeral rotation throwing shoulder & non-throwing shoulder. Glenohumeral internal rotation throwing shoulder and non-throwing shoulder and glenohumeral external rotation throwing shoulder & non-throwing shoulder didn t show a significant difference among the groups in ROM & GIRD. Glenohumeral internal rotation throwing shoulder(PIP rehabilitation training group & hospital rehabilitation training group) showed a significant difference by the pre-post tests in ROM & GIRD. An interaction effect appeared in the ROM & GIRD with glenohumeral internal rotation throwing shoulder. Back strength and grip strength didn t show a significant difference among the groups, while back strength showed a significant difference by the pre-post tests in the PIP rehabilitation training group & hospital rehabilitation training group. Grip strength showed a significant difference by the pre-post tests in the PIP rehabilitation training group. A significant interaction effect appeared in back strength and grip strength.