Effectiveness of a brief theory-based health promotion intervention among adults at high risk of type 2 diabetes: One-year results from a randomised trial in a community setting

Aim To examine the effect of a brief theory-based health promotion intervention delivered in the community on health behaviour and diabetes-related risk factors among Danish adults at high risk of diabetes. Methods A randomised trial was conducted among 127 individuals aged 28 to 70 with fasting plasma glucose: 6.1-6.9 mmol/l and/or HbA_1c: 6.0-5%; changes in physical activity. Results 85% attended one-year follow-up. After adjusting for gender, age and education, Odds ratio (OR) (95% CI) intervention vs control: total-fat intake 5%: 2.47 (0.95;6.39). β(95% CI) between intervention vs control in changes from baseline: IPAQ, MET min/week: -236 (-2760; 2288), waist circumference,cm: -2.5 (-4.5; -0.5); systolic blood pressure, mmHg: -4.6 (-8.8; -0.3). Conclusion A brief theory-based health promotion intervention delivered in the community indicated effect on weight, waist circumference and systolic blood pressure at one year among Danish adults at high risk of diabetes. No effect was shown on diets or physical activity.