In older adults who regularly exercise, lowering both physical activity and food intake reduces the number of calories burned at rest and decreases nerve activity in skeletal muscle, indicating that higher energy use is linked to a higher resting metabolic rate.

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Evidence from Studies

Supporting (1)

33

Community contributions welcome

33

High energy flux mediates the tonically augmented beta-adrenergic support of resting metabolic rate in habitually exercising older adults.

Cross-Sectional Study

Human

2004 Jul

When older adults who regularly exercise stop working out and eat less to match their lower activity, their bodies burn fewer calories at rest—and this is because their nervous system becomes less active in keeping metabolism high. So staying active and eating enough helps keep your metabolism running faster.

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No contradicting evidence found

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Source Study

High energy flux mediates the tonically augmented beta-adrenergic support of resting metabolic rate in habitually exercising older adults.

Score: 33

DOI: 10.1210/JC.2003-032146

Similar Assertions

Regular physical activity that keeps energy use high may help maintain a higher resting metabolic rate and lower the risk of losing metabolic function and gaining weight as people age.

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In older adults who exercise regularly, the contribution of beta-adrenergic receptors to resting energy use is detectable when energy expenditure is high but disappears when energy expenditure is lowered, suggesting that higher energy flux maintains this physiological mechanism.

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In older adults who exercise regularly, the extent to which their resting metabolic rate changes during periods of lower energy intake is closely related to how much their body's beta-adrenergic signaling contributes to that change.

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46

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