Trial of a very brief pedometer intervention to promote physical activity in preventative health checks

Abstract

Background: Very brief interventions (VBIs) (<5mins) for physical activity (PA) may have substantial public health impact when delivered as part of preventative health checks. We aim to estimate the effectiveness of a very brief pedometer-plus intervention (Step-It-Up), which includes action planning, goal-setting, self-monitoring and feedback to encourage adults to increase physical activity through a face to face discussion, pedometer use and written materials. Method: A randomised controlled trial with 1:1 individual allocation evaluates Step-It-Up (delivered in a health check) against the health check alone among adults aged 40-74 years. Follow-up is at 3-months by accelerometers and questionnaires; outcomes are objectively-measured (Actigraph accelerometers) and self-reported PA. Process measures include recall of the consultation and self-reported use of behaviour change techniques. Analysis of covariance will be used to test for intervention effects using an intention to treat approach, supported by a per protocol analysis for the primary outcome. Findings: 23 GP practices in the East of England (mean deprivation score of 17.05 (SD10.72)) recruited 1008 participants. The cohort is predominantly white British, male to female ratio is 2:3, mean age 58 (SD9.0) and 58% of the cohort is in work. Retention rates at 3-month follow-up are 80%. Discussion: We have recruited a cohort which is representative of the wider population attending health checks (i.e. older adults, females and from less deprived areas). Use of various approaches including text reminders have helped to achieve good retention at three months. Follow up will be completed by the end of March 2016.