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Peer Reviewed Studies Discussion / Vertical Jump
« on: June 07, 2009, 02:45:04 am »
Of course there could be a million studies in here.. There are some other VJ studies in the other topics, but regardless, any study related to vertical jump can be put in here.
1. The influence of squat depth on maximal vertical jump performance
2. Effects of ballistic training on preseason preparation of elite volleyball players.
3. INFLUENCE OF TRAINING BACKGROUND ON JUMPING HEIGHT
1. The influence of squat depth on maximal vertical jump performance
Quote
Because jumping from a deep squat is rarely practised, it is unlikely that these jumps were optimally coordinated by the participants. Differences in experimental vertical ground reaction force patterns also suggest that jumps from a deep squat are not optimally coordinated. These results suggest there is the potential for athletes to increase jump performance by exploiting a greater range of motion.
2. Effects of ballistic training on preseason preparation of elite volleyball players.
Quote
The treatment group produced a significant increase in both SJR (STANDING JUMP) and AJR (APPROACH JUMP) of 5.9 +/- 3.1% and 6.3 +/- 5.1%, respectively. These increases were significantly greater than the pre- to postchanges produced by the control group, which were not significant for either jump. Analysis of the data from the various other jump tests suggested increased overall force output during jumping, and in particular increased rate of force development were the main contributors to the increased jump height.
Conclusions: These results lend support to the effectiveness of ballistic resistance training for improving vertical jump performance in elite jump athletes.
3. INFLUENCE OF TRAINING BACKGROUND ON JUMPING HEIGHT
Quote
The power-trained
group jumped significantly higher (p
0.05) than the BB and
PA groups (0.40
0.05, 0.31
0.04, and 0.30
0.05, respec-
tively). The difference in jumping height was not produced by
higher rates of force development (RFD) and shorter center of
mass (CM) displacement. Instead, the PT group had greater CM
excursion (p
0.05) than the other groups. The PT and BB
groups had a high correlation between jumping height and 1RM
test (r
0.93 and r
0.89, p
0.05, respectively). In conclusion,
maximum strength seems to be important for jumping height,
but RFD does not seem relevant to achieve maximum jumping
heights. High RFD jumps should be performed during training
only when sport skills have a time constraint for force applica-
tion