The study was conducted on 24 football players ranging between 21-32 years. The subjects were randomly divided into two groups and were named as high and low intensity plyometric groups. High intensity plyometric group was given exercises comprising of double and single leg vertical jumps alongwith single leg tuck jumps while low intensity plyometric group was administered split and cycled squat jumps. Both the groups were given plyometric training for four weeks. Vertical jump and maximum

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... tary isometric contraction were recorded in both the groups at the start and 2 nd and 4 th week of training. In the present study, high intensity plyometric and low intensity plyometric exercises for four weeks showed different magnitudes of improvement in vertical jump height and maximal voluntary isometric contraction. Results of the study further show that High Intensity Plyometric training has significant effect on Vertical Jump Height and Maximum Voluntary Isometric Contraction as compared to Low Intensity Plyometric.