Physical activity behaviour with planning interventions
Evidence basis: randomised trials
Action and coping plans can modestly increase physical activity.
Population: General-population planning trials and contextual studies in adults aged 50–70; protocols and activity measures varied.
Research details
Summary
A review included 41 trials with 5,439 participants, with 35 used in the meta-analysis. Planning interventions improved physical activity versus control (SMD 0.35, 95% CI 0.25 to 0.44), with substantial heterogeneity (I² 61.4%). A retirement-age review also found small overall effects and identified action planning among several components; a broader mediator review did not find one behaviour-change construct to be the dominant mechanism.
Why this certainty
Limited for this practical combined habit because planning has randomized support, but the proposed goal-setting/logging/review routine is an adaptation of heterogeneous interventions. Component and long-term outcome effects remain uncertain.
Limitations
Studies tested different action/coping plans, prompts and follow-up support. This estimate does not isolate logging or progress review, determine the best review interval or establish changes in fitness, cardiovascular events or lifespan.
Effect estimate
Physical-activity SMD 0.35 (95% CI 0.25 to 0.44), 35 planning trials.
- The Effectiveness of Planning Interventions for Improving Physical Activity in the General Population: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
- Promoting physical activity during retirement age with psychological components: multilevel meta-analysis.
- Mediators of physical activity behaviour change interventions among adults: a systematic review and meta-analysis.


