The intention of this study was to examine the effectiveness of unilateral and bilateral resistance training on muscular strength of teenage football players. The study was delimited to the football players of age between fifteen and seventeen years. Participants were randomly assigned to three different training groups (15 in each group). Group-I performed Unilateral Resistance Training [URT], Group-II performed Bilateral Resistance Training [BRT] and group-III acted as control [CG]. The experimental groups trained at the same time of day in the morning session, three days a week for 12 weeks, throughout the study. The muscular strength was assessed by leg press test. The data collected from the experimental groups on muscular strength  was statistically analyzed by paired ‘t’ test and analysis of covariance (ANCOVA). The Scheffe’s post hoc test was also applied. Further, percentage of changes was calculated to find out the chances in selected dependent variables due to the impact of experimental treatment. Due to URT as well as bilateral resistance training the football player’s muscular strength was greatly improved. Following 12 weeks of URT and BRT treatment, football player’s muscular strength (URT=26.19%, and BRT=9.74%), enhanced greatly.

Keywords: Unilateral and bilateral resistance training, Muscular strength, Football players.