Exercise & Energy Intake (EI)
Exercise & Weight Loss
To know how effective exercise could be in helping people to lose weight
or to prevent weight gain, it is important to understand how exercise
effects energy intake (EI). The common sense view that an exercise-induced
energy deficit will drive EI probably originates from two sources. Firstly
from the theory of homeostasis, suggesting that changes in energy expenditure
(EE) will be automatically compensated for by EI, and secondly from empirical
evidence showing that a dietary-induced energy deficit is compensated
for by an increase in EI. Therefore, some people believe that exercise
will be futile for weight control since any energy expended in exercise
will be automatically compensated for by a corresponding increase in (EI).
Exercise & Appetite Control
An examination of the relationship between exercise and appetite control
shows that most studies demonstrate that EI does not immediately rise
after exercise. The evidence suggests that the processes of exercise-induced
EE and EI do not appear to be tightly linked. Therefore, in theory, exercise
should be very useful in helping to bring about weight loss, and even
more importantly, in preventing weight gain or weight re-gain. However,
misconceptions about exercise (i.e. amount of energy used) and food (energy
value ingested) could potentially have a negative influence on the impact
of exercise on weight control.
Neil King, School of Psychology, University
of Leeds. (2000)
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