01-09-2011
Increasing Physical Activity in Belgian Type 2 Diabetes Patients: a Three-Arm Randomized Controlled Trial
Published in: International Journal of Behavioral Medicine | Issue 3/2011
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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 ≤80 years; 25–35 kg/m²; ≤12% 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 ≤ 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 ≤ 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 ≤ 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.