The adaptive metabolic response to exercise-induced weight loss influences both energy expenditure and energy intake
2014 (English)In: European Journal of Clinical Nutrition, ISSN 0954-3007, E-ISSN 1476-5640, Vol. 68, no 5, 581-586 p.Article in journal (Refereed) Published
BACKGROUND/OBJECTIVES: A decline in resting energy expenditure (SEE) beyond that predicted from changes in body composition has been noted following dietary-induced weight loss. However, it is unknown whether a compensatory downregulation in REE also accompanies exercise (EX)-induced weight loss, or whether this adaptive metabolic response influences energy intake (El). SUBJECTS/METHODS: Thirty overweight and obese women (body mass index (BMI) =30.6 +/- 3.6 kg/m(2)) completed 12 weeks of supervised aerobic EX. Body composition, metabolism, El and metabolic-related hormones were measured at baseline, week 6 and post intervention. The metabolic adaptation (MA), that is, difference between predicted and measured SEE was also calculated post intervention (MA(post)), with SEE predicted using a regression equation generated in an independent sample of 66 overweight and obese women (BMI =31.0 +/- 3.9 kg/m(2)). RESULTS: Although mean predicted and measured SEE did not differ post intervention, 43% of participants experienced a greater-than-expected decline in SEE ( 102.9 +/- 77.5 kcal per day). MA(post) was associated with the change in leptin (r= 0.47; P=0.04), and the change in resting fat (r= 0.52; P=0.01) and carbohydrate oxidation (r= 0.44;P= 0.02). Furthermore, MApost was also associated with the change in El following EX (r= 0.44; P=0.01). CONCLUSIONS: Marked variability existed in the adaptive metabolic response to EX. Importantly, those who experienced a downregulation in SEE also experienced an upregulation in El, indicating that the adaptive metabolic response to EX influences both physiological and behavioural components of energy balance.
Place, publisher, year, edition, pages
2014. Vol. 68, no 5, 581-586 p.
exercise-induced weight loss, energy intake, resting energy expenditure, leptin
Nutrition and Dietetics
IdentifiersURN: urn:nbn:se:uu:diva-227267DOI: 10.1038/ejcn.2013.277ISI: 000335935900009OAI: oai:DiVA.org:uu-227267DiVA: diva2:731721