This conclusion is supported by two shortterm
studies performed in women25 and men,26
which demonstrate that when energy balance
induced by either caloric restriction or energy
expenditure is carefully matched the effect of
diet-induced and exercise-induced, weight
loss is similar. Individuals in these trials were
randomized to an identical daily energy deficit
(500–700 kcal), created either by diet or by
supervised daily exercise, for a 12-week period.
In the exercise-only group, energy intake was
closely controlled to baseline levels. Similar
weight losses (approximately 6 kg in women
and 8 kg in men) occurred in both the diet-only
and exercise-only groups, which suggests that
if a large negative energy balance is successfully
created by exercise substantial weight loss can
occur, provided that there is not a compensatory
increase in energy intake.