The purpose of this study was to compare the effects of 4 weeks of
plyometric training on grass surface group and concrete surface on jumping
performance among volleyball athletes. The vertical jump was evaluated in
two types of jump; squat jump (SJ) and countermovement jump (CMJ). The
results of this study indicate that 4 weeks of intervention led to a significant
improvement in post-tests of SJ and CMJ (p < 0.05) for both grass surface
and concrete surface. However, in comparing the grass and concrete
surfaces, there was no significant difference (p > 0.05). These findings
suggest that plyometric training on different surfaces may be associated with
similar training-induced effects on neuromuscular factors related to the
efficiency of the stretch-shortening cycle.