Abstract
The purpose of this study was to investigate an effect of the complex − training on strength, power, and jump height in male university volleyball players during pre − competition season. Twenty three male university volleyball players were divided into the following three training groups; COMB（Combination − traing group, n ＝ 9）, COMP（Complex − training group, n ＝ 7）, and WT（Weight − training group, n ＝ 7）. The following training conditions were adopted for 2 or 3 times/week for 8 weeks in each training group. The COMB trained Squat − training（SQ, 85%1RM）and depth − jump with rest（30 min）. The COMP trained SQ（85%1RM）and depth − jump without rest. The WT trained only SQ（85%1RM）. In order to evaluate the effect of training, the 1RM Squat, Squat Jump（SJ）, Counter Movement Jump（CMJ）, Drop Jump（DJ）, and leg extension power were measured in pre − and post − training period.
The main results were as follows：（1）Jump heights of SJ, CMJ, and DJ did not increase in all training groups.（2）The leg press power decreased in WT（− 4.2%）.（3）The leg extension power increased in COMP（+9.2%）. The results indicated that the complex − training did not affect on jump height, however, the leg press power was improved. In addition, high intensity SQ reduced the leg press power.
