시각적 피드백을 병행한 어깨복합운동프로그램이 어깨비대칭 청년들의 어깨 근력과 정렬에 미치는 영향 = Effects of Shoulder Complex Exercise Program with Visual Feedback on Muscles Strength and Alignment of Shoulders in Adolescents with Shoulder Asymmetry

다국어 초록 (Multilingual Abstract)

The purpose of this study was to identify whether shoulder complex exercise program with visual feedback
could improve the shoulder muscular strength and postural alignment in adolescents with shoulder asymmetry.
Twenty eight subjects were recruited from the K university and divided into three groups: experimental 1,
2group(Each n=10) and control group(n=8). For 4 weeks, the experimental group 1 performed shoulder muscle
complex exercise program and the experimental group 2 performed shoulder complex exercise program with
visual feedback. The control group did not perform exercises. The shoulder muscle strength and difference
between the height of left and right shoulders were assessed before, after training using the hand-held
dynamometer and Global Posture System. Subordination variables, general characteristics analysis, χ² test and
Kruskal Wallis H test were conducted to evaluate differences between groups and training before, after changes
were checked Wilcoxon signed rank test with using the PASW 18.0 statistical program.
The results of the study were as follows. 1) Both the experimental 1, 2group showed improvements in
muscle strength of several muscles following training (p<.01). The control group showed significant reduction in
the left posterior deltoid (p<.05), and did not show significant changes in examining other muscles (p>.05). And
there were differences among three groups in shoulder muscle strength (p<.001). Muscle strength changes in
several muscles were greater in the experimental 1, 2group compared with the control group (p<.001). Muscle
strength changes in the several muscles were greater in the experimental group 2 compared with the
experimental group 1 (p<.001) 2) Both the experimental 1, 2group showed significant decreases in the difference
between the left and right shoulder heights following training (p<.01). The control group did not show change
(p>.05). Changes in the difference between the left and right shoulder heights were greater in the experimental
1, 2group compared with the control group (p<.001).