Predictors of successful weight loss with relative maintenance of fat-free mass in individuals with overweight and obesity on an 8-week low-energy diet



Hansen, Thea Toft, Hjorth, Mads Fiil, Sandby, Karoline, Andersen, Sarah Vold, Astrup, Arne, Ritz, Christian, Bullo, Monica, Lucia Camacho-Barcia, Maria, Francisco Garcia-Gavilan, Jesus, Salas-Salvado, Jordi
et al (show 3 more authors) (2019) Predictors of successful weight loss with relative maintenance of fat-free mass in individuals with overweight and obesity on an 8-week low-energy diet. BRITISH JOURNAL OF NUTRITION, 122 (4). 468 - 479.

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Abstract

A low-energy diet (LED) is an effective approach to induce a rapid weight loss in individuals with overweight. However, reported disproportionally large losses of fat-free mass (FFM) after an LED trigger the question of adequate protein content. Additionally, not all individuals have the same degree of weight loss success. After an 8-week LED providing 5020 kJ/d for men and 4184 kJ/d for women (84/70 g protein/d) among overweight and obese adults, we aimed to investigate the relationship between protein intake relative to initial FFM and proportion of weight lost as FFM as well as the individual characteristics associated with weight loss success. We assessed all outcomes baseline and after the LED. A total of 286 participants (sixty-four men and 222 women) initiated the LED of which 82 % completed and 70 % achieved a substantial weight loss (defined as ≥8 %). Protein intake in the range 1·0–1·6 g protein/d per kg FFM at baseline for men and 1·1–2·2 g protein/d per kg FFM at baseline for women was not associated with loss of FFM (P = 0·632). Higher Three-Factor Eating Questionnaire (TFEQ) hunger at baseline and reductions in TFEQ disinhibition and hunger during the LED were associated with larger weight loss (all P ≤ 0·020); whereas lower sleep quality at baseline predicted less successful weight loss using intention to treat analysis (P = 0·021), possibly driven by those dropping out (n 81, P = 0·067 v. completers: n 198, P = 0·659). Thus, the protein intakes relative to initial FFM were sufficient for maintenance of FFM and specific eating behaviour characteristics were associated with weight loss success

Item Type: Article
Uncontrolled Keywords: Low-energy diets, Appetite, Hunger, Behaviour, Protein, dual-energy X-ray absorptiometry, fat-free mass, intention-to-treat, low-energy diet, moderate-to-vigorous physical activity, Three-factor Eating Questionnaire
Depositing User: Symplectic Admin
Date Deposited: 02 Mar 2020 10:35
Last Modified: 21 Nov 2020 21:11
DOI: 10.1017/S0007114519001296
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/3076624