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Original Articles Open Access
Muscle strength and explosive power are of the principal factors in the sports and development this factors invoices with proper resistance training, depending on the nature of the sport is highly regarded. The aim of the present study was to comparison of tree type of resistance training (elastic, weight machine and combined) on strength, power, vertical jump and flexibility of teenager volleyball. For this purpose, 33 teenager volleyball players with an average (age 16/4 ± 1/21 years, height 177/5 ± 2/4 cm and weight 67/3 ± 3/22 kg) were randomly selected and division in the three experimental groups (elastic (N=9), machine weights (N=9) and combined (N=9) ) and a control group (N=6). All three experimental groups done resistance training 2 sessions of weeks, for 12 weeks with plan compiled but Control group continued to practice volleyball. Before and after training, pre-test and post-test of 1 RM per exercise (bench press, shoulder abduction , leg extension , leg curl and leg press), Anaerobic Wingate, vertical jump Sargent, the explosive power on the charts Louise and flexibility of subjects was performed. To analyze the data, descriptive statistics, ANOVA and LSD post hoc test was used. Analyze the data record significant increase in post-test data subjects, compared with pre-test them. The results showed that elastic resistance training, weights machines and combined can be to increase Muscle strength. The results also showed that weight machines and combined resistance training can be to increase muscle strength more than of elastic training. The vertical jump was significantly increased in all three experimental groups compared to the control group, but no significant difference between the experimental groups was seen in the vertical jump. Lewis charts the explosive power in all three groups increased, but this increase was significant only in the elastic resistance training. The peak power (W) and (W/Kg) and average power (W) and (W/Kg) increase, but this increase was not statistically significant. The results also showed that elastic resistance training can be to increase the explosive power more than of weight machines and combined resistance training. The flexibility of the trunk, there was no significant difference between experimental group and control group .Result of present study shown, when the goal of resistance training is increases muscle strength, combined of resistance training and when the aim of resistance training is to develop the power, use of elastic resistance training is a priority of the other two methods.
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Author(s): Sayed Saeed Vaezi Sayed Mohammad Marandi and Sadegh Kishi
Muscle, teenager, ANOVA