A randomised controlled trial of three very brief interventions for physical activity in primary care

Pears, Sally, Bijker, Maaike, Morton, Katie, Vasconcelos, Joana, Parker, Richard A., Westgate, Kate, Brage, Soren, Wilson, Ed, Toby Prevost, A., Kinmonth, Ann-Louise, Griffin, Simon, Sutton, Stephen, Hardeman, Wendy and , VBI Programme Team (2016) A randomised controlled trial of three very brief interventions for physical activity in primary care. BMC Public Health, 16. ISSN 1471-2458

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Abstract

Background: Very brief interventions (VBIs) for physical activity are promising, but there is uncertainty about their potential effectiveness and cost. We assessed potential efficacy, feasibility, acceptability, and cost of three VBIs in primary care, in order to select the most promising intervention for evaluation in a subsequent large-scale RCT. Methods: Three hundred and ninety four adults aged 40-74 years were randomised to a Motivational (n=83), Pedometer (n=74), or Combined (n=80) intervention, delivered immediately after a preventative health check in primary care, or control (Health Check only; n=157). Potential efficacy was measured as the probability of a positive difference between an intervention arm and the control arm in mean physical activity, measured by accelerometry at four weeks. Results: For the primary outcome the estimated effect sizes (95% CI) relative to the Control arm for the Motivational, Pedometer and Combined arms were respectively: +20.3 (-45.0, +85.7), +23.5 (-51.3, +98.3), and -3.1 (-69.3, +63.1) counts per minute. There was a73% probability of a positive effect on physical activity for each of the Motivational and Pedometer VBIs relative to control, but only 46% for the Combined VBI. Only the Pedometer VBI was deliverable within 5 minutes. All VBIs were acceptable and low cost. Conclusions: Based on the four criteria, the Pedometer VBI was selected for evaluation in a large-scale trial.

Item Type: Article
Additional Information: © 2016 The Author(s). Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Uncontrolled Keywords: very brief interventions,physical activity,behaviour change techniques,health promotion,public health,primary care
Faculty \ School: Faculty of Medicine and Health Sciences > School of Health Sciences
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Depositing User: Pure Connector
Date Deposited: 24 Sep 2016 00:56
Last Modified: 22 Jul 2020 01:05
URI: https://ueaeprints.uea.ac.uk/id/eprint/60308
DOI: 10.1186/s12889-016-3684-7

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