Comparison of dominant and non-dominant hand of young volleyball players in muscle mass and dynamic balance components
Poster Presentation
Paper ID : 1639-SSRC
Authors
1گروه آسیب شناسی و حرکات اصلاحی دانشکده علوم ورزشی، دانشگاه واحد خوراسگان اصفهان
2استادیار، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران. ، مرکز تحقیقات سلامت جامعه،
Abstract
Introduction and Aim: During playing volleyball, due to the frequent movements of player's hand, the upper limb is the most common point of injury in players. So, in the point of view of sport pathology, it is essential to pay attention to the use of the dominant and non-dominant players’ hand. Therefore, this study is going to compare the effect of using the dominant and non-dominant players’ hand on the parameters of muscle mass and dynamic balance.
Materials and Methods: 16 professional male volleyball players (15 right-handed and 1 left-handed) with at least 3 years of experience, were selected. After analyzing the body composition of players, using biological impedance measurement, the assessment of muscle strength and its imbalances in the dominant and non- dominant limbs of the players was done using the power plate (shoulder test protocol). Then, dynamic balance of players was examined through the YBALANCE test. Finally, all obtained data were analyzed using the statistical methods of paired t-test, Pearson (P < 0.05) and Shapiro-Wilk test.
Results: The results showed that the volume of muscle in the dominant hand is more than the non- dominant hand (about 1%), which leads to higher power of the dominant hand than the non-dominant hand. The dynamic balance tests demonstrated that using non- dominant hand causes to increase the performance of players (around 6%).
Discussion and Conclusion: The comparison of dominant and non-dominant hand of young volleyball players in muscle mass and dynamic balance components indicated that the imbalances in the dynamic balance of young volleyball players are more influenced by the imbalance of muscle strength.
Materials and Methods: 16 professional male volleyball players (15 right-handed and 1 left-handed) with at least 3 years of experience, were selected. After analyzing the body composition of players, using biological impedance measurement, the assessment of muscle strength and its imbalances in the dominant and non- dominant limbs of the players was done using the power plate (shoulder test protocol). Then, dynamic balance of players was examined through the YBALANCE test. Finally, all obtained data were analyzed using the statistical methods of paired t-test, Pearson (P < 0.05) and Shapiro-Wilk test.
Results: The results showed that the volume of muscle in the dominant hand is more than the non- dominant hand (about 1%), which leads to higher power of the dominant hand than the non-dominant hand. The dynamic balance tests demonstrated that using non- dominant hand causes to increase the performance of players (around 6%).
Discussion and Conclusion: The comparison of dominant and non-dominant hand of young volleyball players in muscle mass and dynamic balance components indicated that the imbalances in the dynamic balance of young volleyball players are more influenced by the imbalance of muscle strength.
Keywords