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Effects of vertical, horizontal, and combination depth jump training on long jump performance

100%
Singh D., Singh S.
Biomedical Human Kinetics
|
2012
|
vol. 4
107-111
EN
Study aim: To assess the effects of vertical, horizontal, and combination depth jump training programs on the performance of the running long jump by male athletes. Material and methods: A total of 80 physical education students ranging in age between 18-21 years with mean depth jump performance of 44.3 ± 5.13 cm from a 45 cm high box were purposively selected to act as subjects. The subjects were randomly assigned to vertical depth jump training (VD), horizontal depth jump training (HD), the combination of both (CD), and a control group (CG). Each week, experimental groups performed 6 sets (10 repetitions per set) twice a week for 10 weeks of depth jump training from a height of 20 cm, which progressed to 40 cm according to the step method. Running long jump (RLJ) was measured before and after 10 weeks. Analysis of covariance, with pre-test scores as a covariate, was applied to compare scores. A pairwise comparison was done by using the Scheffe’s post-hoc test. Results: The average increase of RLJ performance in groups VD (0.17 m) and CD (0.23 m) was significantly different (p<0.05) than in group CG (0.05 m). Improvement in group HD (0.12 m) was not significantly different than in group CG; moreover, no significant difference existed between training groups. Conclusions: A combination of both vertical and horizontal depth jumping is required for long jumpers, with a higher proportion of vertical depth jumping.
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Effects of Vertical and Horizontal Plyometric Exercises on Running Speed

100%
Singh D., Singh S.
Human Movement
|
2013
|
vol. 14
|
issue 2
144-147
EN
Purpose. The aim of the present study was to compare the effects of vertical, horizontal and a combination of both vertical and horizontal plyometric exercises (depth jumping) on running speed. Methods. A purposively selected sample of 80 male students were randomly assigned into either a control group or groups training the vertical depth jump, horizontal depth jump or a combination of both. The experimental groups trained twice weekly for 10 weeks, performing 6 sets of 10 repetitions per session. Drop height was increased from 20 to 40 cm according to the step method. Running speed was measured by a 45.72 m dash test before and after the 10-week period. Results. Analysis of covariance was applied to compare scores. A pair-wise comparison was performed using Scheffe’s post-hoc test at a 0.05 level of confidence. The results showed significant improvements among the three experimental groups as compared with the control group, whereas a comparison between the three experimental groups was found to be insignificant. The percentage of performance increase from pre-test to post-test running speed was 2.23%, 2.96% and 3.57% for the groups training vertical, horizontal and both vertical and horizontal depth jumps, respectively. Conclusions. A combination of both vertical and horizontal depth jumping, with a slightly larger emphasis on horizontal plyometric training, can aid sprinters’ performance.
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