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Am J Clin Nutr. 2013 May;97(5):990-4. doi: 10.3945/ajcn.112.050310. Epub 2013 Mar 27.

Weight loss, weight maintenance, and adaptive thermogenesis.

Author information

1
Department of Human Biology, Nutrition and Toxicology Research Institute Maastricht, Maastricht University, Maastricht, Netherlands. sg.camps@maastrichtuniversity.nl

Erratum in

  • Am J Clin Nutr. 2014 Nov;100(5):1405.

Abstract

BACKGROUND:

Diet-induced weight loss is accompanied by adaptive thermogenesis, ie, a disproportional or greater than expected reduction of resting metabolic rate (RMR).

OBJECTIVE:

The aim of this study was to investigate whether adaptive thermogenesis is sustained during weight maintenance after weight loss.

DESIGN:

Subjects were 22 men and 69 women [mean ± SD age: 40 ± 9 y; body mass index (BMI; in kg/m(2)): 31.9 ± 3.0]. They followed a very-low-energy diet for 8 wk, followed by a 44-wk period of weight maintenance. Body composition was assessed with a 3-compartment model based on body weight, total body water (deuterium dilution), and body volume. RMR was measured (RMRm) with a ventilated hood. In addition, RMR was predicted (RMRp) on the basis of the measured body composition: RMRp (MJ/d) = 0.024 × fat mass (kg) + 0.102 × fat-free mass (kg) + 0.85. Measurements took place before the diet and 8, 20, and 52 wk after the start of the diet.

RESULTS:

The ratio of RMRm to RMRp decreased from 1.004 ± 0.077 before the diet to 0.963 ± 0.073 after the diet (P < 0.001), and the decrease was sustained after 20 wk (0.983 ± 0.063; P < 0.01) and 52 wk (0.984 ± 0.068; P < 0.01). RMRm/RMRp was correlated with the weight loss after 8 wk (P < 0.01), 20 wk (P < 0.05), and 52 wk (P < 0.05).

CONCLUSION:

Weight loss results in adaptive thermogenesis, and there is no indication for a change in adaptive thermogenesis up to 1 y, when weight loss is maintained. This trial was registered at clinicaltrials.gov as NCT01015508.

PMID:
23535105
DOI:
10.3945/ajcn.112.050310
[Indexed for MEDLINE]

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