Adaptations to a diet-based weight-reducing program in obese women resistant to weight loss

Authors: Tremblay, AngeloLepage, CatherinePanahi, ShirinCouture, ChristianDrapeau, Vicky
Abstract: The aim of this study was to assess energy intake, resting metabolic rate (RMR), appetite sensations, eating behaviours and sleep duration and quality in obese women resistant to body weight loss when subjected to a diet-based weightreducing programme. A pooled cohort of obese women (n = 75; aged 39 ± 8 years; body mass index: 33 ± 4 kg m−2 ) participated in a 12–16-week diet-based weight loss programme targeting a daily energy deficit of 500–700 kcal d−1. Women were classified in tertiles a posteriori based on the response of their body weight to dietary supervision (high, moderate and low responders). Postintervention, mean weight loss was 3.3 ± 2.8 kg and explained by the 2.9 ± 2.6 kg reduction in fat mass. Mean weight loss was 6.2 ± 1.6, 3.4 ± 0.6 and 0.2 ± 1.4 kg in participants classified in the high, middle and low tertiles, respectively. Women in the low tertile reduced their daily energy intake and susceptibility to hunger during the programme to a lesser extent than those in the high tertile and had higher fasting hunger in response to the dietary intervention. Women in the high tertile maintained their RMR, which was in contrast to the significant decrease predicted by their weight loss. They also reported a significant improvement in sleep quality and an increase in sleep duration compared with other tertiles. The differences in the response of body weight to dietary supervision may be explained, in part, by variations in energy intake, eating behaviours, appetite sensations and sleep duration and quality.
Document Type: Article de recherche
Issue Date: 15 April 2015
Open Access Date: Restricted access
Document version: VoR
This document was published in: Clinical Obesity, Vol. 5 (3), 145–153 (2015) 10.1111/cob.12094
Alternative version: 10.1111/cob.12094
Collection:Articles publiés dans des revues avec comité de lecture

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