A community-based, theory-based, setting-based screening and clustered randomized controlled trial to promote physical activity among physically inactive people with impaired glucose tolerance and impaired fasting glucose

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Pre-diabetes (impaired glucose tolerance [IGT]/impaired fasting glucose [IFG]) are prevalent; 70% of them would eventually develop diabetes. Increase in moderate/vigorous physical activity (MVPA) reduced diabetes incidence by 40% among IGT cases. In a clustered RCT, we evaluated an intervention’s efficacy in increasing MVPA time (last week) among Chinese adults aged 40–69 years, having IGT/IFG and < 150 minutes of MVPA (last week). Eligible participants were identified via a risk-assessment questionnaire followed by free OGTT. Four public housing estates were cluster-randomized into the intervention group which received a 6-month theory-based intervention involving gatherings, support groups and exercise prescription, and the control group that received health promotion materials. At evaluation, 71.1% of the intervention group met the 150-minute/week MVPA recommendation. The intervention group was also better than the control group in perceived self-efficacy.

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Funded by the Health and Medical Research Fund

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