In postmenopausal women, changes in how much food they report eating do not reliably explain why some people lose more fat than others when they exercise.
Mechanism
Synthesis from 1 study
When postmenopausal women exercise, their bodies sometimes slow down how much energy they burn at rest or during daily activities, so they lose less fat than expected—even if they don’t eat more. This internal adjustment happens without any change in how much food they report eating.
Most probable mechanism
When postmenopausal women exercise, their bodies adjust how they use energy—burning less fat or conserving it in ways that aren't tied to how much they eat. This makes some women lose less fat than expected, even if they don’t eat more.
Exercise increases energy expenditure, triggering a compensatory reduction in resting metabolic rate or non-exercise activity thermogenesis to conserve energy.
This metabolic downregulation occurs without a corresponding increase in self-reported food intake, indicating energy conservation is driven by internal physiological adjustments rather than behavioral changes.
Reduced efficiency of fat oxidation or increased lipid storage in adipose tissue limits net fat loss despite a negative energy balance from exercise.
Evidence from Studies
Supporting (1)
Community contributions welcome
Dose–response effects of aerobic exercise on energy compensation in postmenopausal women: combined results from two randomized controlled trials
Contradicting (0)
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Gold Standard Evidence Needed
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