Identifying active ingredients in complex behavioural interventions for obese adults with obesity-related co-morbidities or additional risk factors for co-morbidities

a systematic review

Stephan Ulrich Dombrowski, Falko Sniehotta, Alison Avenell, Marie Johnston, Graeme Stewart MacLennan, Vera Araujo-Soares

Research output: Contribution to journalArticle

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5 Downloads (Pure)

Abstract

Reducing obesity is an important preventive strategy for people who are at increased risk of major disabling or life-threatening conditions. Behavioural treatments for obesity are complex and involve several components aiming to facilitate behaviour change. Systematic reviews need to assess the components that moderate intervention effects.

Electronic databases and journals were searched for randomised controlled trials of behavioural interventions targeting dietary and/or physical activity change for obese adults (mean BMI =30, mean age =40 years) with risk factors and follow-up data =12 weeks. A reliable taxonomy of theory-congruent behaviour change techniques (BCTs; Abraham & Michie, 2008) was used to identify programme components.

Meta-regression suggested that increasing numbers of identified BCTs are not necessarily associated with better outcomes. The BCTs provision of instructions (ß=-2.69, p=0.02), self-monitoring (ß=-3.37, p<0.001), relapse prevention (ß=-2.63, p=0.02) and prompting practice (ß=-3.63, p<0.001) could be linked to more successful interventions. Studies including more BCTs aimed at dietary change that are congruent with Control Theory were associated with greater weight loss (ß=-1.13, p=0.04).

Post-hoc ratings of intervention components in published trials can lead to the identification of components and theories for behaviour change practice and research.
Original languageEnglish
Pages (from-to)7-32
Number of pages26
JournalHealth Psychology Review
Volume6
Issue number1
Early online date13 Dec 2010
DOIs
Publication statusPublished - 2012

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Obesity
Morbidity
Secondary Prevention
Weight Loss
Randomized Controlled Trials
Databases
Exercise
Research
Therapeutics

Keywords

  • systematic review
  • obesity
  • behavioural interventions
  • behaviour change techniques
  • meta-regression

Cite this

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abstract = "Reducing obesity is an important preventive strategy for people who are at increased risk of major disabling or life-threatening conditions. Behavioural treatments for obesity are complex and involve several components aiming to facilitate behaviour change. Systematic reviews need to assess the components that moderate intervention effects. Electronic databases and journals were searched for randomised controlled trials of behavioural interventions targeting dietary and/or physical activity change for obese adults (mean BMI =30, mean age =40 years) with risk factors and follow-up data =12 weeks. A reliable taxonomy of theory-congruent behaviour change techniques (BCTs; Abraham & Michie, 2008) was used to identify programme components. Meta-regression suggested that increasing numbers of identified BCTs are not necessarily associated with better outcomes. The BCTs provision of instructions ({\ss}=-2.69, p=0.02), self-monitoring ({\ss}=-3.37, p<0.001), relapse prevention ({\ss}=-2.63, p=0.02) and prompting practice ({\ss}=-3.63, p<0.001) could be linked to more successful interventions. Studies including more BCTs aimed at dietary change that are congruent with Control Theory were associated with greater weight loss ({\ss}=-1.13, p=0.04). Post-hoc ratings of intervention components in published trials can lead to the identification of components and theories for behaviour change practice and research.",
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