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.


OBJECTIVE
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.


METHODS
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).


CONCLUSIONS
Group counseling in type 2 diabetes patients improved PA, whereas individual consultations had an impact on some health outcomes on the short-term.
Department of Movement and Sports Sciences, Ghent University, Watersportlaan 2, 9000 Ghent, Belgium.
Karlijn
K
De Greef
Benedicte
B
Deforche
Catrine
C
Tudor-Locke
Ilse
I
De Bourdeaudhuij
D000368:Aged; D001823:Body Composition; D003376:Counseling; D003924:Diabetes Mellitus, Type 2 / Q000534:rehabilitation*; D015444:Exercise; D005081:Exercise Therapy; D005260:Female; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D016896:Treatment Outcome