The Effect of Six Weeks of Squat, Plyometric and Squat-Plyometric Training on Power Production

The Journal of Strength and Conditioning Research (Impact Factor: 2.08). 01/1992; 6(1). DOI: 10.1519/00124278-199202000-00006

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

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    • "p= 0.66). The conclusion of this study agrees with the finding from a study by Adams et al. (1992). "
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    ABSTRACT: An intervention study on youth basketball players during a 6-month fitness training aiming to assess and compare the performance on velocity, agility and jump ability on a frequency twice weekly was performed in Tirana, Albania. Methods. Twenty-eight youth (male) basketball players (age range 17-18 years) participated in this intervention study. They were assessed Pre and Post training through; velocity 10 m and 20m, agility test 10x5m and drop jump test. The intervention study lasted 6 months (twice weekly) on a fitness gym (strength training). The duration for each training set had lasted for each 45 min (8 fitness machines was used). Results. Results showed statistical significant improvement with regard to F max (kN), F max (kg N) and power (kg W) at p level =0.05. No statistical improvement were found for contact time and air time between pre and post measurement (p=0.09; p= 0.66). Also it was statistical significant improvement with regard to velocity 10m (seconds), velocity 20m (seconds) and agility 10x5m (seconds) at p level =0.05. Conclusion. The intervention performed in this study was successfully with regards to velocity, agility and jump performance. This study will be a powerful tool for the coaches in order to improve the performance of their players through fitness training in youth.
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