The experimental design used for this study was similar to a random group design. It consisted of two different populations namely men and women students. Fifteen men subjects and fifteen women subjects were selected randomly from the above population. All the two experimental groups underwent low intensity aerobic training and were tested prior to and immediately after the experimentation on triglycerides. To find out the detraining effect the blood samples were collected and tested on serum lipids and lipoprotein once in a week (Five Times) after the regular low intensity aerobic training for16 weeks. The data collected from experimental group I and group II prior to and after the completion of the training period were statistically analysed for significant difference if any, by applying dependent ‘t’ test. To eliminate the influence of pretest, the net mean gains of experimental groups were computed separately. The paired mean gains of experimental groups were tested for significance by applying independent ‘t’ ratio. Repeated measures of ANOVA were used to find out the detraining effect of group I and group II. Whenever the 'F' ratio was found to be significant, Scheffe’s test was used as post-hoc test to determine which of the paired means differed significantly. The level of confidence was fixed at 0.05 levels, as number of subject were limited and selected variable might have some fluctuation due to extraneous factors as mentioned in the limitations. The low intensity aerobic training decreased the triglycerides of men group and women group. The results of the study indicate that the five weeks of detraining progamme, (after the 16 weeks’ low intensity aerobic training) increase the triglycerides level among the men and women groups.