Purpose: Plyometric exercises increase the speed of muscular contraction and elevates athletic prowess. The purpose of this study was to assess the effects of lower body plyometric training on vertical jump performance and pulmonary function in male and female collegiate volleyball players. Methods: The programme was conducted twice a week, for an 8- week period on a group of 120 male and female collegiate volleyball players, 18-22 years of age. The samples were divided into four equal groups. All the players were tested for vertical jump height (VJH), forced vital capacity (FVC), and forced expiratory volume in one second (FEV1), using Sargent jump test and pulmonary function test prior to starting the training programme. Assessments were done at the end of 2, 4, 6, and 8 weeks of training period. Result: The findings of the study showed significant change in vertical jump height, forced vital capacity, and forced expiratory volume in one second, at the end of 2 weeks onwards, and the highest response was obtained at the end of 8 weeks. The effect was significantly higher as compared to the control group (P<0.05), and male players showed greater improvement than females. Conclusion: From the study, it can be concluded that lower body plyometric training twice a week, for 8 weeks showed significant improvement in vertical jump performance and pulmonary function in both male and female collegiate volleyball players.
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