Background: Several-studies have suggested an inverted U-shaped relationship between aerobic exercise intensities, moderate levels of exercise increased physiological arousal and facilitated cognition however, when physiological arousal approached a maximal level, cognitive performance began to deteriorate. The majority of the studies reviewed report that exercise induced arousal inûuences cognitive performance, but it does not follow U-shaped function. There are very limited evidences in this field. Thus, this study is designed to evaluate the effects of a single bout of aerobic exercise with different intensities on cognition function in young adult. Aim: To compare the effect of single bout of aerobic exercise with different intensity on cognitive-function in young adults. Methodology: Ninety subjects were recruited based on inclusion and exclusion criteria, out of which 30 subjects were included in each group, Group A-(AEMI), Group B-(AEHI) & Group C- (control). Score of ST and d2 Test were recorded and compared respectively pre and post aerobic exercise with different intensity. Result: The study showed that all the groups’ regimes showed improvement in ST & d2 test score. On comparing the groups, results were significant in ST score but non-significant in d2 test score. ST & d2 score is better in Group a compare to Group B & Group C. Conclusion: AEMI show significant improvement in ST & d2 score compared with AEHI and Control-group.

Keywords: AEMI-Aerobic Exercise Moderate Intensity; AEHI-Aerobic Exercise High Intensity; Cognitive-Function; Attention; Stroop Test.