Effects of Triphasic Training Model Combined With Two Different Cluster Sets on Vertical Jump and Reactive Strength Index

Abstract

Background and Study Aim This study aims to examine the effects of the Triphasic Training Model (TTM) applied with different set designs (15-30 sec intra-set) on reactive strength index (RSI) and vertical jump values. Material and Methods Sixteen male athletes over 18 with at least three years of strength training experience (2 days a week) actively engaged in sports participated in the study. The study group was divided into two groups by calculating the relative strengths. The 15-second cluster set (C15) group exercises were performed with 15 seconds of rest between repetitions, and the 30-second cluster-set (C30) group practiced the exercises with 30 seconds of rest between repetitions. The triphasic training model was applied to all study groups for six weeks. Countermovement jump (CMJ) and drop jump tests were performed on the athletes before and after the training. Optojump brand photocell system was used for CMJ and RSI tests. For the RSI test, the desk height was determined as 40cm. Kolmogorov-Smirnov values were examined to assess the homogeneity of the data. To compare the means between groups, ANOVA was used for Repeated Measures, and a t-test was used to compare the pretest-posttest mean of the groups. The statistical significance level was determined as p<0.05. Results After triphasic training, CMJ and RSI values of both C15 and C30 groups increased (p<0.05). When the within-group pretest-posttest values were examined, it was seen that the C30 group showed more improvement than the C15 group. Conclusions As a result, it was seen that the triphasic training model applied twice a week for six weeks improved the CMJ and RSI values of the athletes, and it was more effective to use C30 instead of C15 in the use of cluster sets.