The objective of the study was to find out the effect of high intensity strength training on selected measures of physical performance. A total of 20 male amateur athletes were selected as subjects for the study age ranging from 25 to 35 years. All the selected subjects were equally divided into two group – experimental group and control group. The experimental group underwent six weeks of high intensity strength training while the control group was not any sort of training during the intervention period. The data of four measures of physical performance – maximum strength (1-Repetition Maximum), explosive strength (standing broad jump), speed (30-m sprint), and agility (modified agility T-test), was collected before and after the completion of training. Descriptive statistics and paired t-test was used to analyse the collected data. The result showed that high intensity strength training is significantly effective in improving the measures of physical performance taken in the study.