The purpose of the present study was to investigate the effect of a scientic study on low and medium level of intense
circuit training on selected physiological parameter among elite female athletes. To achieve the purpose of the study thirty
female athletes were selected from Erode District, Tamilnadu, India during the year 2021. The subject’s age ranges from 21 to 25 years. The
selected subjects were divided into two equal groups consists of 15 subjects each namely experimental group and control group. The experimental
group underwent a combined low and medium level of intensity circuit training programme for eight weeks. The control group was not taking part
in any training during the course of the study. Resting heart rate was taken as criterion variable in this study. The selected subjects were tested on
resting heart rate was measured through heart rate monitor. Pre-test was taken before the training period and post- test was measured immediately
after the eight week training period. Statistical technique‘t’ ratio was used to analyse the means of the pre-test and post test data of experimental
group and control group. The results revealed that there was a signicant difference found on the criterion variable. The difference is found due to
combined low and medium level of intensity circuit training given to the experimental group on heart rate when compared to control group.