Introduction: Reaction time (RT) denotes time taken by an individual to react to external stimulus. RT plays a very important role in our lives as its practical implications may be of great consequences. Fast RTs can give rewards (e.g. in sports), whereas slow RT can lead to grave consequences (e.g. driving and road safety matters). Factors that can affect the human auditory and visual reaction time include age, gender, left or right hand, practice, fatigue, exercise etc. The present study was conducted, which was aiming to find out immediate effect of exercise on auditory and visual reaction time in medical students. Material and Methods: For determination of VRT(Visual Reaction Time) and ART(Auditory Reaction Time) we have used reaction time apparatus designed by Anand agency pune.VRT and ART were determined in 120 healthy medical students in the age group of 17 to 25 years before exercise. All the subjects were asked to perform 5 minute warm up followed by 15­20 minutes exercise on the stationary bicycle (Body Gym Stamina Air Bike) at the speed of less than 5 mph. Data was analyzed by unpaired “t” test. We found both ART and VRT was significantly decreased immediately after physical exercise (p<0.05). Conclusion: Thus our study showed both VRT and ART was significantly decreased in medical students immediately after physical exercise on stationary bicycle. 

Keywords: Auditory Reaction Time; Physical Exercise; Reaction Time; Visual Reaction Time.