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Intermittent energy restriction improves weight loss efficiency in obese men: the MATADOR study

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Byrne, NM ORCID: 0000-0001-5310-6640, Sainsbury, A, King, NA, Hills, AP ORCID: 0000-0002-7787-7201 and Wood, RE ORCID: 0000-0001-7053-6319 2017 , 'Intermittent energy restriction improves weight loss efficiency in obese men: the MATADOR study' , International journal of obesity , doi: 10.1038/ijo.2017.206.

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Abstract

Background/Objectives:The MATADOR (Minimising Adaptive Thermogenesis And Deactivating Obesity Rebound) study examined whether intermittent energy restriction (ER) improved weight loss efficiency compared with continuous ER and, if so, whether intermittent ER attenuated compensatory responses associated with ER.Subjects/Methods:Fifty-one men with obesity were randomised to 16 weeks of either: (1) continuous (CON), or (2) intermittent (INT) ER completed as 8 × 2-week blocks of ER alternating with 7 × 2-week blocks of energy balance (30 weeks total). Forty-seven participants completed a 4-week baseline phase and commenced the intervention (CON: N=23, 39.4±6.8 years, 111.1±9.1 kg, 34.3±3.0 kg m−2; INT: N=24, 39.8±9.5 years, 110.2±13.8 kg, 34.1±4.0 kg m−2). During ER, energy intake was equivalent to 67% of weight maintenance requirements in both groups. Body weight, fat mass (FM), fat-free mass (FFM) and resting energy expenditure (REE) were measured throughout the study.Results:For the N=19 CON and N=17 INT who completed the intervention per protocol, weight loss was greater for INT (14.1±5.6 vs 9.1±2.9 kg; PConclusions:Greater weight and fat loss was achieved with intermittent ER. Interrupting ER with energy balance ‘rest periods’ may reduce compensatory metabolic responses and, in turn, improve weight loss efficiency.

Item Type: Article
Authors/Creators:Byrne, NM and Sainsbury, A and King, NA and Hills, AP and Wood, RE
Journal or Publication Title: International journal of obesity
Publisher: Nature Publishing Group
ISSN: 0307-0565
DOI / ID Number: 10.1038/ijo.2017.206
Copyright Information:

© The Author(s) 2017. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) http://creativecommons.org/licenses/by-nc-nd/4.0/

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