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Review
. 1995 Dec:19 Suppl 7:S8-S9.

Low resting metabolic rate as a risk factor for weight gain: role of the sympathetic nervous system

E Ravussin  1
Affiliations
  • PMID: 8963370
Review

Low resting metabolic rate as a risk factor for weight gain: role of the sympathetic nervous system

E Ravussin. Int J Obes Relat Metab Disord. 1995 Dec.

Abstract

Resting metabolic rate (RMR) comprises 50-80% of daily energy expenditure, and is highly variable between subjects even after adjusting for body weight and body composition. RMR is believed to be genetically determined. Individuals with a low RMR for a given body size are at higher risk of significant weight gain, relative to those with a high RMR. Studies in Caucasians indicate that sympathetic nervous system (SNS) activity is related to the three major components of energy expenditure: RMR, the thermic effect of food and spontaneous physical activity. Pima Indians have low SNS activity and, unlike Caucasians, their RMR does not correlate with SNS activity. A variant of the beta 3-adrenoceptor gene has been found to be weakly associated with metabolic rate. Low resting SNS activity and its apparent dissociation from metabolic rate could be a causative factor in the development of obesity.

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