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Weight loss maintenance in primary health care: a randomised controlled trial

Year: 2024

Type: article

Study designs: Randomized Controlled Trial, Clinical Trial

Abstract: This study evaluates the maintenance of a clinically meaningful weight loss (≥ 5 %) after 12 and 36 months of participation in an intervention to promote fruit and vegetable (FV) consumption. A randomised controlled trial was conducted in a primary health care service. For 7 months, participants in the control group (CG) and in the intervention group (IG) performed guided physical exercise three times/week; the IG also participated in collective activities to promote FV consumption. This study selected participants (n 267) who showed clinically meaningful weight loss after nutritional intervention. Sociodemographic, health and body weight data were collected in a face-to-face interview at baseline (T0) and after intervention (T1). Participants were reassessed after 12 (T2) and 36 months (T3) by telephone interview, and the self-reported weight was corrected. The outcome measures weight changes at three time points: M1, comparing T2 with T1; M2, comparing T3 with T2; and M3, comparing T3 with T1. The generalised estimating equation, adjusted for individual characteristics, was used. Participants in the CG showed an increase of 4·2 kg (P < 0·001) at M1 and 4·6 kg (P < 0·001) at M3, while IG individuals showed an increase of 3·6 kg (P < 0·001) at M1 and 3·8 kg (P < 0·001) at M3. The between-group analyses show the effect of nutritional intervention on the maintenance of weight loss at M2 (P = 0·033). Although CG and IG participants increased in weight, the nutritional intervention was associated with maintenance over the long term. This reveals the importance of the promotion of FV consumption for body weight maintenance.

Source: British Journal Of Nutrition

DOI: 10.1017/s0007114524002241

Authors: Patrícia Pinheiro de Freitas, Mariana Souza Lopes, Aline Critine Souza Lopes

Institutions: Universidade Federal de Minas Gerais, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Universidade Federal da Paraíba

Language: English

Topic: Obesity, Physical Activity, Diet

Subfield: Public Health, Environmental and Occupational Health

Field: Medicine

Domain: Health Sciences

SDGs: Good health and well-being, Zero hunger

Open Access status: bronze

Funders: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação de Amparo à Pesquisa do Estado de Minas Gerais, Universidade Federal de Minas Gerais