Honors Theses

Date of Award


Document Type

Undergraduate Thesis


Health, Exercise Science, and Recreation Management

First Advisor

John Garner

Relational Format



Vertical jumping ability is a vital component of superior athletic performance. The purpose of this study was to compare the effects of six weeks of resistance training (RT), plyometric training (PT), and complex training (CT) on vertical ground reaction forces in vertical jump measures in college-aged males. Thirty participants were divided into three training groups: RT (n=l 1), PT (n=9), or CT (n=10). The participants trained two days a week for six weeks and participated in pre-testing, mid-testing, and post testing sessions for a total study period of nine weeks. The testing sessions consisted of a 1RM back squat, Romanian Deadlift, standing calf raise, and three countermovement vertical jumps that were performed on a force plate in order to obtain average peak ground reaction force. A 3 x 3 (Group by Time Point) ANCOVA with body weight covariate revealed a significant group difference. A follow-up Bonferroni Post Hoc group by time point interaction, but a trend towards an applied effect appeared between complex training and resistance training. Across all three training protocol groups, there was a significant improvement in post-testing measures compared to pre-testing measures. Data in this study suggest that complex training was more effective than resistance training in improving vGRF in the vertical jump in recreationally trained college-aged males. However, there were no statistical or applied differences between complex and plyometric training or between plyometric and resistance training

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