The present exploration is projected to elucidate the changeability on selected physiological parameters in response to aerobic activity between untrained and trained women. For this purpose, twenty-four untrained (N=I2) and trained (N=I2) women college students in the age group of 18 to 22 years were selected as participants' from Tamilnadu Physical Education and Sports University. The selected dependent variables such as systolic blood pressure, diastolic blood pressure and pulse rate, were appraised at resting conditions and after aerobic activity (one mile jog) by using Oscillometric method and instruments of scientific standards. To statistically analyze and compare the changes on selected physiological parameters in response to aerobic activity, two-way analysis of variance with repeated measures on last factor was used. The analysis of data revealed that systolic blood pressure and pulse rate altered considerably in response to aerobic activity irrespective of groups. Furthermore, the finding indicates that significant difference exists on pulse rate between untrained and trained groups irrespective of testing conditions. This result suggests that untrained and trained individuals differ in their physiological capacities.

Key words: Aerobic activity, physiological response.