Cited by 86Physical Activity and HealthCardiovascular and exercise physiologyBehavioral Health and Interventions

Control Group Improvements in Physical Activity Intervention Trials and Possible Explanatory Factors: A Systematic Review

Waters, Lauren, Reeves, Marina, Fjeldsoe, Brianna, Eakin, Elizabeth·2012·Journal of Physical Activity and Health

Abstract

Background: Several recent physical activity intervention trials have reported physical activity improvements in control group participants. Explanations have been proposed, but not systematically investigated. Methods: A systematic review of physical activity intervention trials was conducted to investigate the frequency of meaningful improvements in physical activity among control group participants (increase of ≥ 60 minutes [4 MET·hours] of moderate-to-vigorous physical activity per week, or a 10% increase in the proportion of participants meeting physical activity recommendations), and possible explanatory factors. Explanatory factors include aspects of behavioral measurement, participant characteristics, and control group treatment. Results: Eight (28%) of 29 studies reviewed reported meaningful improvements in control group physical activity, most of which were of similar magnitude to improvements observed in the intervention group. A number of factors were related to meaningful control group improvements in physical activity, including the number of assessments, mode of measurement administration, screening to exclude active participants, and preexisting health status. Conclusions: Control group improvement in physical activity intervention trials is not uncommon and may be associated with behavioral measurement and participant characteristics. Associations observed in this review should be evaluated empirically in future research. Such studies may inform minimal contact approaches to physical activity promotion.

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Crossref · 10.1123/jpah.9.6.884

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Authors
Waters, L., Reeves, M., Fjeldsoe, B., & Eakin, E.
Affiliations
The University of Queensland (AU)
Venue
Journal of Physical Activity and Health
Published
2012-08
Volume
9
Issue
6
Pages
884-895
ISSN
  • 1543-3080 (ISSN-L)
  • 1543-5474
OpenAlex
W2109376020
Cited by
86
References
78
Citations by year
2026: 5 · 2025: 6 · 2024: 10 · 2023: 8 · 2022: 4 · 2021: 6 · 2020: 6 · 2019: 11 · 2018: 10 · 2017: 7 · 2016: 3 · 2015: 4 · 2014: 4 · 2013: 1 · 2012: 1
FWCI
2.14
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Physical Activity and Health (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Social Sciences › Psychology › Applied Psychology › Behavioral Health and Interventions
Keywords
physical activity promotion, behavioral assessment, moderate-to-vigorous physical activity
MeSH terms
Age Factors, Health Status, Humans, Sex Factors, Socioeconomic Factors, Health Behavior, Exercise, Body Mass Index, Randomized Controlled Trials as Topic, Control Groups

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