INTRODUCTION–In lights of current obesity epidemic,treatment models are needed that can provide weight loss.We examined the effect of supervised exercise on body weight and composition in previously obese men and women.OBJECTIVE–We hypothesized that a 3 months program of exercise would provide weight loss as compared to control. methods:A 60 obese adult men and women(mean body mass index [±SD],30.80 ± 4.19 kg/cm2),mean weight 74.94 ± 10.84 with a mean waist circumference of 90.24 ± 8.45 cm) were selected to either exercise intervention or control condition for 3 months. 30 participants completed exercise and rest are controls. A control group of participants was asked not to engage in any structured exercise during the study.RESULTS:After 3 months participants in the exercise group had significance decrease in weight(5.09±4.73 kg),waist circumference(7.87±0.83cm),body mass index(5.64±0.59kg/cm²),total body fat loss in women(3.92±0.5%) and in men(4.33±1.33) as compared to control.CONCLUSIONS:These findings suggest that,(Provided there are no changes in diet)exercise can bring about weight loss.