INTRODUCTION
Vertical jumping is integral to the game of volleyball,
and therefore considerable training
time is allocated to developing this component
of neuromuscular performance. Various methods,
including resistance and plyometric training,
are used to increase maximal and explosive strength,
with the aim to maximize the player’s jump height. Although
there are a number of anecdotal reports in the
literature regarding the training of volleyball players, few
studies have evaluated the conditioning and training of
these athletes (8, 9, 13, 19). Newton et al. (19) trained
national-level male volleyball players for a period of 8
weeks using either traditional squats or jump squats
(JSs), which the authors described as ballistic training.
Traditional training did not elicit any change; however,
even the highly trained athletes in the ballistic training
group produced increases in jump performance of around
6%