Effective Techniques in Healthy Eating and Physical Activity Interventions: A Meta-Regression

Susan Michie*, Charles Abraham, Craig Whittington, John McAteer, Sunjai Gupta

*Corresponding author for this work

Research output: Contribution to journalLiterature reviewpeer-review

Abstract

Objective: Meta-analyses of behavior change (BC) interventions typically find large heterogeneity in effectiveness and small effects. This study aimed to assess the effectiveness of active BC interventions designed to promote physical activity and healthy eating and investigate whether theoretically specified BC techniques improve outcome. Design: Interventions, evaluated in experimental or quasi-experimental studies, using behavioral and/or cognitive techniques to increase physical activity and healthy eating in adults, were systematically reviewed. Intervention content was reliably classified into 26 BC techniques and the effects of individual techniques, and of a theoretically derived combination of self-regulation techniques, were assessed using meta-regression. Main Outcome Measures: Valid outcomes of physical activity and healthy eating. Results: The 122 evaluations (N = 44,747) produced an overall pooled effect size of 0.31 (95% confidence interval = 0.26 to 0.36, I(2) = 69%). The technique, "self-monitoring," explained the greatest amount of among-study heterogeneity (13%). Interventions that combined self-monitoring with at least one other technique derived from control theory were significantly more effective than the other interventions (0.42 vs. 0.26). Conclusion: Classifying interventions according to component techniques and theoretically derived technique combinations and conducting meta-regression enabled identification of effective components of interventions designed to increase physical activity and healthy eating.

Original languageEnglish
Pages (from-to)690-701
Number of pages12
JournalHealth Psychology
Volume28
Issue number6
DOIs
Publication statusPublished - Nov 2009

Keywords

  • physical activity
  • healthy eating
  • behavior change
  • self-regulation
  • meta-regression
  • RANDOMIZED CONTROLLED-TRIAL
  • TAILORED NUTRITION INTERVENTION
  • BEHAVIOR-CHANGE TECHNIQUES
  • RECEIVING FOOD ASSISTANCE
  • PRIMARY-CARE SETTINGS
  • WEIGHT-LOSS PROGRAM
  • REDUCE FAT INTAKE
  • LOW-INCOME WOMEN
  • DIETARY INTERVENTION
  • OLDER-ADULTS

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