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Type: Journal article
Title: Preventing weight gain in women in rural communities: a cluster randomised controlled trial
Author: Lombard, C.
Harrison, C.
Kozica, S.
Zoungas, S.
Ranasinha, S.
Teede, H.
Citation: PLoS Medicine, 2016; 13(1):e1001941-e1001941
Publisher: PLoS Medicine
Issue Date: 2016
ISSN: 1549-1277
Editor: Tsai, A.C.
Statement of
Catherine Lombard, Cheryce Harrison, Samantha Kozica, Sophia Zoungas, Sanjeeva Ranasinha, Helena Teede
Abstract: Obesity is reaching epidemic proportions in both developed and developing countries. Even modest weight gain increases the risk for chronic illness, yet evidence-based interventions to prevent weight gain are rare. This trial will determine if a simple low-intensity intervention can prevent weight gain in women compared to general health information.We conducted a 1-yr pragmatic, cluster randomised controlled trial in 41 Australian towns (clusters) randomised using a computer-generated randomisation list for intervention (n = 21) or control (n = 20). Women aged 18 to 50 yr were recruited from the general population to receive a 1-yr self-management lifestyle intervention (HeLP-her) consisting of one group session, monthly SMS text messages, one phone coaching session, and a program manual, or to a control group receiving one general women's health education session. From October 2012 to April 2014 we studied 649 women, mean age 39.6 yr (+/- SD 6.7) and BMI of 28.8 kg/m(2) (+/- SD 6.9) with the primary outcome weight change between groups at 1 yr. The mean change in the control was +0.44 kg (95% CI -0.09 to 0.97) and in the intervention group -0.48 kg (95% CI -0.99 to 0.03) with an unadjusted between group difference of -0.92 kg (95% CI -1.67 to -0.16) or -0.87 kg (95% CI -1.62 to -0.13) adjusted for baseline values and clustering. Secondary outcomes included improved diet quality and greater self-management behaviours. The intervention appeared to be equally efficacious across all age, BMI, income, and education subgroups. Loss to follow-up included 23.8% in the intervention group and 21.8% in the control group and was within the anticipated range. Limitations include lack of sensitive tools to measure the small changes to energy intake and physical activity. Those who gained weight may have been less inclined to return for 1 yr weight measures.A low intensity lifestyle program can prevent the persistent weight gain observed in women. Key features included community integration, nonprescriptive simple health messages, small changes to behaviour, low participant burden, self-weighing, and delivery including a mix of group, phone, and SMS text reminders. The findings support population strategies to halt the rise in obesity prevalence.
Keywords: Obesity
Rights: © 2016 Lombard et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI: 10.1371/journal.pmed.1001941
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