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Relationship between scapular initial position and scapular movement during dynamic motions


Autoři: Jun Umehara aff001;  Masahide Yagi aff001;  Tetsuya Hirono aff001;  Tomohito Komamura aff003;  Satoru Nishishita aff001;  Noriaki Ichihashi aff001
Působiště autorů: Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan aff001;  Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan aff002;  Chiba University Hospital, Rehabilitation unit, Chiba, Japan aff003
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0227313

Souhrn

Optimal scapular position and movement are necessary for normal function of the shoulder joint and it is essential to focus on scapula in the rehabilitation for shoulder disorders. The aim of this study was to discover the relationship between the scapular initial position and scapular movement during dynamic motions in healthy young men. Thirty-four men participated in this study. The scapular angles at initial position and in elevation and lowering during flexion and abduction were measured using an electromagnetic tracking device. The scapular movements from 30° to 120° during flexion and abduction were calculated. Spearman’s rank correlation coefficients were used to analyze the relationship between the scapular initial position and scapular movements. For upward rotation and posterior tilt of the scapula, there were significant positive correlations between the scapular initial position and scapular movement during flexion and abduction. For internal rotation, there were significant positive correlations, except 90° in lowering phase and 120° in both phases. While the humeral elevation increased, the correlation coefficients tended to decrease. Except for the internal rotation our results clarified the interactions between the scapular initial position and scapular movement during dynamic motions in healthy young men. The tendency of the decrease in correlation coefficient with elevation angle was shown.

Klíčová slova:

Musculoskeletal system – Body limbs – Biomechanics – Skeletal joints – Kinematics – Shoulders – Electromagnetics


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