Effects of intermittent dieting with break periods on body composition and metabolic adaptation: a systematic review and meta-analysis.

Autor:	Poon ET; Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, Hong Kong., Tsang JH; Fitness Nutrition and Training Center, Sheungwan, Hong Kong., Sun F; Department of Health and Physical Education, The Education University of Hong Kong, Taipo, Hong Kong., Zheng C; Department of Health and Physical Education, The Education University of Hong Kong, Taipo, Hong Kong., Wong SH; Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, Hong Kong.
Jazyk:	angličtina
Zdroj:	Nutrition reviews [Nutr Rev] 2025 Jan 01; Vol. 83 (1), pp. 59-71.
DOI:	10.1093/nutrit/nuad168
Abstrakt:	Context: Intermittent dieting incorporated with break periods (INT-B) has recently been promoted as an alternative dietary approach for optimal weight management. Objective: This study assessed the effectiveness of INT-B compared with that of conventional continuous energy restriction (CER) for improving body composition and attenuating metabolic adaptation. Data Sources: A systematic search was conducted on 6 databases using all available records until July 2023. Data Extraction: The extracted data included the lead author, year of publication, population characteristics, intervention protocols, duration, and adherence. Data Analysis: Random-effects meta-analyses were conducted for within-group and between-group comparisons of anthropometric and metabolic outcomes. Subgroup moderator analysis was performed for the types of INT-B, intervention duration, and population characteristics. Results: Of the 1469 records, 12 randomized trials (with 881 participants) were included. Within-group analyses demonstrated significant improvements in body mass, fat mass, body mass index, body fat percentage, and waist circumference following both INT-B and CER, with no significant group differences. However, resting metabolic rate (RMR) was significantly reduced following CER only. The compensatory reduction in RMR was significantly smaller following INT-B compared with CER, suggesting a lesser degree of metabolic adaptation. INT-B had a more significant effect on RMR retention in individuals with overweight/obesity compared with resistance-trained individuals. Conclusion: This review provides up-to-date evidence for INT-B as a viable dietary strategy to improve body composition and attenuate metabolic adaptation. Systematic Review Registration: PROSPERO registration no. CRD42023448959. (© The Author(s) 2024. Published by Oxford University Press on behalf of the International Life Sciences Institute. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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