The purpose of this study was to investigate the effect of
selected circuit training exercises on hundred meters dash.
To fulfil this aim, 30 girl’s students of Govt. Girls High
School, Bapatla, and Guntur District were selected as
subject in random group of 200 students. Subjects were
selected purely on the basis of random sampling method. As
cited by Aggarwal, random sampling method of selection
assures each individual or element in the universe an equal
chance of being chosen. First the students who fall between
14 and 17 age group were pooled. The name of each subject
was written on a paper and all the places were mixed in a
bowl and the required number (30) of students were selected
by drawing lots. The initial performance of the students was
recorded. The subjects were asked to run 100 metres
distance with full speed and their time was recorded. The
exercises included in the circuit training programme were
originated by Don Schmidt had been slightly modified and
were as follows: