The purpose of the study is to find out the investigation of the changes on reaction time and  anaerobic power of football players due to low and high frequency aerobic interval training.  To achieve the purpose of the study forty five male football players were selected from Altius International Football Academy, Palakkad, Kerala, India, were selected as subjects.  The subjects were selected in the age group of 15 to 18 years. Forty five subjects were selected at random and subjects were divided into three equal groups designed two experimental group and the other control group. Thus each group consisted of 15 subjects. Experimental group-I was given the packages of low frequency aerobic interval training (3days/week), experimental group-II was given the packages of high frequency aerobic interval training (6days/week) and group III was acted as control. Each subject was oriented in the procedure to the administration of the test. Prior to and after the exercises period the subjects were tested for, reaction time and  anaerobic power measured by reaction time ruler test and running-based anaerobic sprint test. The statistical tool were used for the present study is ANACOVA. Further to determine which of the paired means has significant improvement, Scheffe’s test was applied as Post-Hoc Test. The result of the study was a significant increase on reaction time and anaerobic power after twelve weeks of low and high frequency aerobic interval training. However the increase was favour of experimental group. There was a significant difference was occurred between experimental and control groups after twelve weeks of low frequency aerobic interval training.

Keywords:- Aerobic interval training, Reaction time, Anaerobic power and Football