The Effect Of A Short Term Plyometric Program On Hard Floor And Sand For The Improvement Of Vertical Jump Height In Basketball
Cardiff Metropolitan University
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Purpose: The research objective was to observe and recognise the effects of plyometric training on different surfaces, specifically sand and hard floor for the improvement of vertical jump height in basketball. Method: Thirteen Cardiff Metropolitan University students who played basketball (n = 12 male and n = 1 female) with mean age of 20.3 ± 2.0 (years), mass 83.2 ± 14.2 (kg) and stature 181.9 ± 7.2 (cm) agreed to participate in the study. All participants took part in a 5 week plyometric program and were randomly allocated to one of the two training conditions, plyometric program on hard floor (HF: n = 7) or plyometric program in a sand pit (SP: n = 6). Following the plyometric program and VJT test measures descriptive statistic were executed by mean and S.D to identify a measure of central tendency. Calculation of skewness and kurtosis was needed to establish if the data was normally distributed. Data was normally distributed so it was considered appropriate to use a parametric independent samples t-test. Results: Data analysis of post vertical jump height illustrated a significant increase in jump height for the sand pit compared to the hard floor condition (P = 0.002). The alternative hypothesis was accepted as (P < 0.05) identifying that there was a significant difference between the two conditions. Using Excel 2010 mean and S.D values could be calculated for both the experimental and control condition. Statistical data showed that the control group pre testing mean vertical jump height was 40.76 ± 6.67 (cm) and post testing mean vertical jump height was 42.1 ± 6.74 (cm), illustrating a mean improvement of 1.34 (cm). For the experimental group pre testing the mean vertical jump height was 39.45 ± 1.93 (cm) and post testing mean vertical jump height was 42.25 ± 2.2 (cm), demonstrating a mean improvement of 2.8 (cm). Conclusion: The experimental condition revealed to have an additional jump improvement of 1.46 (cm) compared to the control condition.
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