The effect game position on scapula movement impairment and shoulder girdle stability among elite women volleyball players

Scapula movement impairment is common among athletes with overhead throws and can make athletes susceptible to shoulder injuries. The purpose of this study was The effect game position on scapula movement impairment and shoulder girdle stability among elite women volleyball players. In this descriptive-comparative study, 125 women volleyball players were purposefully selected and compared. Participants classified in this study with obvious scapular movement impairment of the scapular dyskinesis test, Kibler lateral scapular slide test and scapulohumeral rhythm. For measure the strength and rang of motion respectively handdeld power meter and goniometer were used. The Y-Balance Test Upper Quarter and Seated Medicine Ball Throw was used to measure the functional stability of the upper extremity. One_Way ANOVA, bonferroni correction test, chi square pearson correlation was used to analyze data. The results showed, significant difference between the frequency of scapular movement impairment in the five positions of the game. In addition, there was significant relationship between movement impairment and volleyball game position. (P= 0/001) Different movement patterns in the game positions caused a difference in the players' functional stability score, and the use of specific muscles in the movement pattern in each position affected the ratio of muscle length and strength and their range of motion. Doing repetitive motion patterns at volleyball for a long time causes imbalance in natural strength raito, scapulohumeral rhythm and range of motion.