Increasing Physical Activity in Belgian Type 2 Diabetes Patients: a Three-Arm Randomized Controlled Trial

Background Pedometer-based physical activity programs have been typically delivered in a group format by a behavioral expert. An alternative strategy that builds on existing interactions is delivery through individual consultation by a general practitioner (GP). These two delivery strategies have not been directly compared. Purpose To compare effectiveness of a 12-week physical activity (PA) intervention for type 2 diabetes patients delivered by a trained GP via an individual consultation or as group delivery by a behavioral expert. Method Sixty-seven primary care participants (mean age = 67.4 years, 70% male) from three Belgian general practices were randomized into three different treatment arms: (1) individual consultation (n = 22) with three PA contacts with the patient's GP; (2) group counseling (n = 21) with three PA group sessions delivered by a behavioral expert; and (3) a control arm (n = 24) receiving no intervention. Participant inclusion criteria were a parts per thousand currency sign80 years; 25-35 kg/mA(2); a parts per thousand currency sign12% HbA1c and reporting no PA limitations. Outcome measures were pedometer-determined steps/day, self-reported PA, and health parameters (weight, body mass index, waist circumference, total cholesterol, fasting glucose, and HbA1c). Results Group counseling participants increased 1,706 steps/day over baseline significantly (p a parts per thousand currency signaEuro parts per thousand 0.05) more than other treatment arms. Moreover, they increased their self-reported PA (+82 min/day), while control arm participants showed a decrease in PA (p a parts per thousand currency signaEuro parts per thousand 0.05). Participants of the individual consultation had a decrease in waist circumference (-1.4 cm) and HbA1c (-0.32%) and a lower increase in total cholesterol (+7.2 mg/dl) compared to the other treatment arms (all p a parts per thousand currency signaEuro parts per thousand 0.05). Conclusion Group counseling in type 2 diabetes patients improved PA, whereas individual consultations had an impact on some health outcomes on the short-term.