The Effect of Eccentric Strength and Depth Jump Training on Strength, Vertical Jump, and Modified Y Balance on Male Basketball Players

Aim; The aim of this research is to examine the effect of eccentric strength and depth jump training on strength, vertical jump and dynamic balance levels of male basketball players. Material and Method; 32 voluntary participants, 15 experimental and 17 control, were included in the research. A training program which includes eccentric strength program (between 70-85% of 1 RM and 3 sets x 8-12 repeat, 1 sec concentric-3 sec eccentric contraction in each repeat) and depth jump (depth jump over boxes of 20 cm, 40 cm, 60 cm between the 2nd and 8th weeks) were included to the preseason basketball training of participants in the experimental group for 8 weeks and as three times a week. Participants in the control group continued their in-season basketball training. Before and after the training period, the balance (Modified Y Balance Test), vertical jump and isometric leg strength of both groups were recorded. Repeated Measure ANOVA was used in the statistical analysis of the obtained data. Findings; When the interaction level between the measurement and group x measurement of the experimental and control group was examined, a statistically significant increase was observed in favor of the experimental group in the right leg modified Y balance test, leg strength, and vertical jump values. According to the simple effect test of the experimental and control group, the qualitative difference in leg strength, vertical jump and right leg modified Y balance test values were statistically significant. While the left leg modified Y balance test was significant in favor of the experimental group, the improvement of the control group was not significant. Result; The obtained results indicate that the eccentric strength training that is included in the preseason training of participants positively affects their performance.