Author(s): AN, H., AN, J.Y., YOO, J., KIM, H., KIM, S.H., JANG, S., JEONG, S., KIM, J., KIM, D., Institution: CHONNAM NATIONAL UNIVERSITY, Country: KOREA, SOUTH, Abstract-ID: 979

INTRODUCTION:
Plyometric training is a specialized exercise modality that utilizes the stretch-shortening cycle (SSC) to enhance explosive power and neuromuscular efficiency. While its benefits are well-recognized in elite athletes, there is a limited understanding of its comprehensive influences on sedentary young adults who may require regular physical activity to improve health-related fitness. This study aimed to investigate the effects of a 12-week plyometric training program on body composition, muscle function (strength, muscular endurance, agility, power, reaction time, and isokinetic strength), and anaerobic capacity (mean power, maximal power, and fatigue index) in college-aged males.
METHODS:
Twenty-one males (aged 20-29) with no regular high-intensity exercise experience within the previous 6 months were randomly assigned to either an experimental group (EX, n=11) or a control group (CON, n=10). Participants in the EX group had performed plyometric training with three times per week for 12 weeks, while participants in the CON group had maintained their ordinary lifestyle. Statistical analysis was utilized with independent t-tests for baseline homogeneity. For variables with confirmed homogeneity, two-way repeated measures ANOVA with contrast tests was conducted. For reaction time (where homogeneity was not met), ANCOVA was applied. All data were processed by using SPSS 27.0 with significance set at α = .05.
RESULTS:
Significant group-by-time interactions were observed across multiple domains. First, leg extension strength significantly increased from pre- to post-test in the EX group only, with post-test values in the EX group being significantly higher than the CON group. Second, chest press and lat pull-down performance significantly improved in the EX group, whereas the CON group showed no statistical changes. Third, sit-up performance improved significantly only in the EX group. Notably, isokinetic left knee extension torque at 180°/s significantly increased in the EX group but significantly decreased in the CON group. Finally, all variables of anaerobic capacity, including absolute and relative mean and peak power (Watts, W/kg), showed significant increases in the EX group with no changes in the CON group.
CONCLUSION:
The results demonstrate that 12 weeks of plyometric training positively influences muscle function and anaerobic capacity in college-aged males. These findings indicate that plyometric training is an effective and viable exercise modality for improving physical fitness and health in young males who require consistent participation in physical activity.