The effect of auxotonic training on muscle strength and power parameters in volleyball players

Objective: The aim of this study is the effect of auxotonic training on the examination of muscle strength and power changes in female volleyball players. Method: The auxotonic training group consisting of 10 participants (AUT: 16.32 years, 1.72 m, 63.63 kg) and the isokinetic training group consisting of 10 participants (IKT: 16.23 years, 1.69 m, 60.22 kg) were included in the study. The AUT group performed isotonic+isometric and the IKT group performed isotonic muscle contractions over 8 weeks. Muscle strength 1TM force measurement was used to determine training development, and activforce isometric activation measurement was used for isometric muscle contraction action. In addition, general power tests were performed to determine power variations. In the statistics of the study, AUT and IKT statistical analyzes within and outside the group were obtained using a T-test. Results: The strength variabilities of study for AUT-IKT was similar results in 1RM strength measurement and activforce measurement. However, AUT group obtained highly improvement result for power variabilities (p<0.05). The auxotonic training resulted on wrist abduction (ES=3.20), triceps press down (ES=1.66), hip extension (ES=0.98), ankle dorsal flexion (ES=1.41), ankle plantar flexion (ES=1.40), ankle eversion (ES=1.01), biceps curl (ES=0.99), hip adduction (ES=1.06), calf raise (ES=1.47), trunk extension (ES=0.88), trunk rotation (ES=1.53) for OKT group was significant increases other by IKT group. Additionally, in performing of AUT-IKT groups comparison, CMJ (90°) ES=1.09 very large, vertical jump ES=1.31 very large and handgrip right ES=0.05 small effect size resulted for power tests. Conclusion: Based on the results an increase of strength was observed on measurements after oxotonic training. It was determined that auxotonic training applied to volleyball players was effective strength and power development. We believe that the auxotonic training to volleyball players will bring a perspective to the trainers and athletes who will work in this field as a model.