Group versus one‐to‐one multi‐component lifestyle interventions for weight management: a systematic review and meta-analysis of randomised controlled trials

Article


Abbott, S., Smith, E., Tighe, B. and Lycett, D. 2021. Group versus one‐to‐one multi‐component lifestyle interventions for weight management: a systematic review and meta-analysis of randomised controlled trials. Journal of Human Nutrition and Dietetics. 34 (3), pp. 485-493. https://doi.org/10.1111/jhn.12853
TypeArticle
TitleGroup versus one‐to‐one multi‐component lifestyle interventions for weight management: a systematic review and meta-analysis of randomised controlled trials
AuthorsAbbott, S., Smith, E., Tighe, B. and Lycett, D.
Abstract

Background
Multi-component lifestyle interventions that incorporate diet, physical activity and behaviour change are effective for weight management. However, it is not clear whether delivery in a group or one-to-one format influences weight loss efficacy. The present study aimed to systematically review the evidence of the effectiveness of group compared to one-to-one multi-component lifestyle interventions for weight management.
Methods
MEDLINE, EMBASE, CINAHL, CENTRAL and ISRCTN databases were searched from inception up to February 2020 for randomised controlled trials comparing group versus one-to-one multi-component lifestyle interventions for weight loss in adults with a body mass index ≥ 25 kg m–2. The primary outcome was weight loss (kg) at 12 months and the secondary outcome was attainment of ≥5% weight loss at 12 months. Risk of bias was assessed using the Cochrane Risk of Bias Tool. Meta-analysis used random effects and estimated risk ratios and continuous inverse variance methods. Heterogeneity was investigated using I2 statistics and sensitivity analyses.
Results
Seven randomised controlled trials with 2576 participants were included. Group interventions were favoured over one-to-one interventions for weight loss at 12 months (−1.9 kg, 95% confidence interval = −1.3 to −2.6; I2 = 99%). Participants of group interventions were more likely to attain ≥5% weight loss at 12 months relative to one-to-one interventions (relative risk = 1.58, 95% confidence interval = 1.25–2.00; I2 = 60%).
Conclusions
Group multi-component lifestyle interventions are superior for weight loss compared to one-to-one interventions with respect to adult weight management. Further research is required to determine whether specific components of group interventions can explain the superiority of weight loss outcomes in group interventions.

KeywordsNutrition and Dietetics, Medicine (miscellaneous)
Research GroupSports Coaching and Education at the London Sport Institute
LanguageEnglish
PublisherWiley
JournalJournal of Human Nutrition and Dietetics
ISSN0952-3871
Electronic1365-277X
Publication dates
Online28 Dec 2020
Print28 May 2021
Publication process dates
Deposited07 Jul 2021
Accepted06 Dec 2020
Output statusPublished
Accepted author manuscript
Accepted author manuscript
Supplemental file
Copyright Statement

This is the peer reviewed version of the following article: Abbott, S., Smith, E., Tighe, B. and Lycett, D. (2021), Group versus one-to-one multi-component lifestyle interventions for weight management: a systematic review and meta-analysis of randomised controlled trials. J Hum Nutr Diet, 34: 485-493, which has been published in final form at https://doi.org/10.1111/jhn.12853. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Digital Object Identifier (DOI)https://doi.org/10.1111/jhn.12853
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