Tools
Tools
Evans, T, Dhir, P, Matu, J, Radley, D, Hill, A, Jones, A, Newson, L, Freeman, C, Kolokotroni, KZ, Fozard, T and Ells, L (2025) Behaviour change techniques in low energy and very low energy diet interventions for weight loss: a systematic review with meta-analysis. Obesity Reviews. ISSN 1467-7881
|
Text
Behavior change techniques in low-calorie and very.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract
Background: The NHS Low-Calorie Diet (NHS-LCD) Programme was launched in 2020 to help people improve their Type 2 Diabetes through weight loss and maintenance. Programme participants receive structured behavioural support across 52-weeks of one-to-one, group, or digital coaching. As no NICE guidance currently exists on the behaviour change content recommended for low energy diet programmes, the NHS-LCD is informed by behaviour change recommendations more broadly. The aim of this systematic review was to establish the BCTs implemented in interventions prescribing ≤1200kcal/d for people with overweight and/or obesity and how these contribute to effectiveness through meta-analyses. Methods: Databases were searched from inception to April 2022. Following PRISMA guidance, titles/abstracts and subsequent full texts were screened individually and in duplicate, with discrepancies resolved by a third reviewer. Data extraction, BCT coding and quality appraisal was conducted individually and in duplicate using the TIDieR checklist, BCTTv1, and RoB2 tool. Where data was sufficient, meta-analyses examined weight loss and maintenance outcomes; subgroup analyses examined the effects of individual BCTs, intervention components, and participant characteristics. Results: Thirty-two papers reporting on 27 studies were identified for inclusion. Of these, 21 studies were included in at least one outcome time-point in the meta-analyses, the remaining six studies were synthesised narratively. 24 BCTs were identified across studies. All eight BCTs analysed at the end-of-diet time-point were individually, significantly associated with a larger reduction in weight; one BCT was statistically significant at end of weight maintenance. Physical activity, Type 2 Diabetes, and BMI category moderated intervention effects. Conclusions and implications: This is the first systematic review and meta-analysis to examine how specific BCTs contribute to the effectiveness of low-energy diets. We identified eight BCTs associated with a larger reduction in weight. It is recommended that NHS England stipulate the use of these BCTs in the NHS-LCD service specification.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | behavior change; behavioral support; low‐calorie diet; total diet replacement; type 2 diabetes; Prevention; Nutrition; Obesity; Clinical Trials and Supportive Activities; Clinical Research; Cancer; Stroke; Metabolic and endocrine; 11 Medical and Health Sciences; 17 Psychology and Cognitive Sciences; Endocrinology & Metabolism; 32 Biomedical and clinical sciences; 42 Health sciences; 52 Psychology |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
| Divisions: | Psychology (from Sep 2019) |
| Publisher: | Wiley |
| Related URLs: | |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 13 Feb 2025 14:44 |
| Last Modified: | 13 Feb 2025 14:45 |
| DOI or ID number: | 10.1111/obr.13896 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/25638 |
 |
View Item |