The word ‘training’, in its broad sense, refers to any organized and systematic instructional process, which aims at enhancing man’s ability with regard to physical, psychological and intellectual aspects. The purpose of the investigation was to study and compare the effects of plyometrics, circuit training and circuit breaker programmes Physiological Variables of Tribal Students. For the purpose of the study 100 male Tribal Students from The Birsa Munda Tribal University, Rajpipla were randomly selected as the subjects for the study. All the subjects were randomly assigned to four groups: three experimental groups viz: plyometric training group (Group A), circuit training group (Group B), and circuit breaker programme group (Group C) and the fourth group served as the control group, each consisting of 25 subjects.

The study was confined to the following Physiological variables Resting heart rate, Exercise heart-rate and Respiratory rate.