However, as previously discussed, many exercise training studies did not report any significant reduction in body weight.
1. Most training studies have not been designed to investigate the effect of exercise on body fatness, but rather to investigate the potential metabolic effects of exercise training and its relation to cardiovascular disease risk.
2. And in many of these exercise training protocols, there was no control of subjects' caloric intake.
These two factors have obviously a considerable impact on the potential reduction of body weight following endurance exercise training and may therefore be partly responsible for the equivocal results reported.