The Effect of Six Weeks of Squat, Plyometric and Squat-Plyometric Training on Power Production
ABSTRACT Explosive leg power is a key ingredient to maximizing vertical jump performance. In training, the athlete must use the most effective program to optimize leg power development. The purpose of this study was to compare the effectiveness of three training programs - squat (S), plyometric (P) and squat-plyometric (SP) - in increasing hip and thigh power production as measured by vertical jump. Forty-eight subjects were divided equally into four groups: S, P, SP or control (C). The subjects trained two days a week for a total of seven weeks, which consisted of a one-week technique learning period followed by a six- week periodized S, P or SP training program. Hip and thigh power were tested before and after training using the vertical jump test, and the alpha level was set at 0.05. Statistical analysis of the data revealed a significant increase in hip and thigh power production, as measured by vertical jump, within all three treatment groups. The SP group achieved a statistically greater improvement (p < 0.0001) than the S or P groups alone. Examination of the mean scores shows that the S group increased 3.30 centimeters in vertical jump, the P group increased 3.81 centimeters and the SP group increased 10.67 centimeters. The results indicate that both S and P training are necessary for improving hip and thigh power production as measured by vertical jumping ability.
(C) 1992 National Strength and Conditioning Association
- SourceAvailable from: Julio Calleja-Gonzalez
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ABSTRACT: With the aim to investigate the plyometric training model used for the increase of explosive type strength (the vertical jump), an experimental research was carried out, drawing a sample of 33 volleyball players at the cadet level. Guided by the general principles of plyometric training, individual training plans were devised. In order to evaluate the effect of the sport training on the development of the vertical jump, three variables were applied. For the purposes of this research, two tests for the evaluation of the volleyball vertical jump were validated: the block jump and the spike jump. The experiment was carried out in the second part of the preliminary period, and it lasted for eight weeks, during which, two to three training sessions per week were held. The control group trained using technically tactical contents. The data was processed using univariate and multivariate analyses as well as a covariance analysis. Based on the findings of the research and the discussion, one could unfailingly conclude that the exercise model for the development of the vertical jump that had been used, as the fundamental factor of the experimental group, has contributed to the statistically relevant difference in the increase of the vertical jump in comparison to the control group, which had used technicallytactical contents to develop the vertical jump. Key words: sport training, the vertical jump, experiment, volleyball playersFacta universitatis, Series: Physical Education and sport. 01/2002; 1(9):11-25.
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ABSTRACT: With the aim of evaluating the effects of plyometric training on the development of jumping agility, an experimental research program was carried out on a sample of 38 cadet volleyball players. Following the general principles of plyometric training, individual training programs were constructed. In order to evaluate the effects of plyometric training on the development of jumping agility, six variables were used. For the purpose of this research, all six tests for the evaluation of jumping agility were validated. The experiment was realized in the second part of the preliminary period, and lasted for six weeks with two to three training sessions per week. The training of the control group involved technical-tactical exercises. The data were processed with the help of a univariate and multivariate analysis of covariance. On the basis of the research results and the discussion, we can with great certainty conclude that the exercise model that was used, as the basic factor of the experimental group, made a statistically significant contribution to the difference in the increase in jumping agility in comparison to the control group which used technical-tactical exercises for the development of jumping agility. Key words: plyometric training, jumping agility, experiment, volleyball players.Facta universitatis, Series: Physical Education and sport. 01/2012; 10(1):59-73.