University of Birjand Journal of Practical Studies of Biosciences in Sport 2383-0182 12 30 2024 06 21 Comparison of the effect of specific volleyball exercises on different training surfaces on some selected factors of physical fitness in volleyball boys Comparison of the effect of specific volleyball exercises on different training surfaces on some selected factors of physical fitness in volleyball boys 58 75 2966 10.22077/jpsbs.2023.6142.1770 FA Saeed Ilbeigi 1. Associate Professor of Depertment of Sport Sciences, Faculty of Sport Sciences, University of Birjand, Birjand, Iran. 0000-0001-9926-8936 Alireza Morshedi MSc in Sport Sciences, Faculty of Sport Sciences, University of Birjand, Birjand, Iran. Marziyeh Saghebjoo Professor of Department of Sport Sciences, Faculty of Sport Sciences, University of Birjand, Birjand, Iran. Mahdieh Abdullahzade MSc in Sport Sciences, Faculty of Sport Sciences, University of Birjand, Birjand, Iran. Journal Article 2023 02 17 Background and Aim: Today, training on various training surfaces is one of the most important concerns of coaches for improving sports performance, which has rarely been considered in sport teams. The purpose of this study was to investigate the effect of six-week of specific volleyball training on ground surfaces (concrete, floor and sand) on some selected factors of physical fitness in volleyball male players. Materials and Methods: Thirty-six male volleyball players (average age, 16.11±0.82 years) were purposefully selected and randomly divided into three training groups including training on concrete, floor, and sand surfaces. The repeated effort performance test (jump and real-time, time and ideal jump) with four repetitions and rest between repetitions at players’ movement speed between 4 to 8 seconds was used. All tests were performed before and after the training programs. One-way analysis of variance and Tukey’s tests were used at the significance level of p≤0.05. Results: Anaerobic power, explosive power (Jumping record) and time reduction in the repeated performance test significantly increased in the both sand and flooring groups compared to the concrete group. Moreover, agility and dynamic balance in the sand and flooring group had a significant decrease and increase, respectively, as compared to the concrete group. Additionally, dynamic balance showed more increased in the sand group than in the floor group. Conclusion: Specific volleyball exercises on sand compared to other surfaces by increasing training overload caused neuro-muscular adaptations and finally improved sports performance and physical fitness of volleyball players. Accordingly, coaches can use sand surfaces to maximize the benefits of training and prevent injury and pain to players. Background and Aim: Today, training on various training surfaces is one of the most important concerns of coaches for improving sports performance, which has rarely been considered in sport teams. The purpose of this study was to investigate the effect of six-week of specific volleyball training on ground surfaces (concrete, floor and sand) on some selected factors of physical fitness in volleyball male players. Materials and Methods: Thirty-six male volleyball players (average age, 16.11±0.82 years) were purposefully selected and randomly divided into three training groups including training on concrete, floor, and sand surfaces. The repeated effort performance test (jump and real-time, time and ideal jump) with four repetitions and rest between repetitions at players’ movement speed between 4 to 8 seconds was used. All tests were performed before and after the training programs. One-way analysis of variance and Tukey’s tests were used at the significance level of p≤0.05. Results: Anaerobic power, explosive power (Jumping record) and time reduction in the repeated performance test significantly increased in the both sand and flooring groups compared to the concrete group. Moreover, agility and dynamic balance in the sand and flooring group had a significant decrease and increase, respectively, as compared to the concrete group. Additionally, dynamic balance showed more increased in the sand group than in the floor group. Conclusion: Specific volleyball exercises on sand compared to other surfaces by increasing training overload caused neuro-muscular adaptations and finally improved sports performance and physical fitness of volleyball players. Accordingly, coaches can use sand surfaces to maximize the benefits of training and prevent injury and pain to players. https://jpsbs.birjand.ac.ir/article_2966_f08f7dd9cc160d2a0ee8a85b9a689f7b.pdf