| Leptin,
a hormone synthesized by fat tissue had been noted to regulate energy
balance and metabolism and thus to influence body weight. The influence
of acute exercise and chronic exercise training on circulating leptin
and its relationship with hormonal and metabolic changes that induce
energy balance are presented. Research that has examined the influence
of exercise under various experimental conditions on leptin and the
conflicts in the literature are presented. It appears that a significant
caloric perturbation (> 800 kcals) is necessary for acute exercise
to result in a significant reduction in leptin. In contrast, exercise
training can result in a leptin decline but typically this manifests
a reduction in adipose tissue stores. In addition, future directions
are presented.
KEY
WORDS: Leptin, exercise, training, hormones.
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