Kirk, Alison Fiona
Promoting and maintaining physical activity in people with type 2 diabetes.
PhD thesis, University of Glasgow.
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The primary aim of the main study was to evaluate the effectiveness of exercise consultation for promoting and maintaining physical activity over 12 months in people with Type 2 diabetes. Secondary aims were to investigate changes from baseline to 6 and 12 months in a number of physiological, biochemical and quality of life variables. 70 inactive people with Type 2 diabetes (35M 35F, mean age 57.6±7.9yrs, BMI 34.6±6.8) were given standard exercise information and randomised to receive an exercise consultation intervention (experimental group n=35) or not (control group n=35). Exercise consultation, based on the transtheoretical model, combines motivational theory and cognitive behavioural strategies into an individualised intervention to promote and maintain physical activity. Exercise consultations were delivered at baseline and 6 months and support phone calls were given 1 and 3 months after each exercise consultation. Changes from baseline to 6 and 12 months were assessed in a) physical activity (7-day recall, accelerometer, stage and processes of exercise behaviour change and cardiorespiratory fitness), b) physiological (body mass index and blood pressure), c) biochemical (glycaemic control, lipid profile, fibrinogen and microalbuminuria) and d) quality of life (Short form-36 and Well-being questionnaire).
Results recorded illustrated between group differences in minutes of moderate activity and total accelerometer counts per week at 6 and 12 months (p<0.01). The experimental group increased minutes of moderate activity and total accelerometer counts from baseline to 6 months (P<0.01), with no significant decrease from 6 to 12 months (P>0.05). From baseline to 12 months a significant increase was recorded in the experimental group for minutes of moderate activity (p<0.01), but not total accelerometer counts per week (p=0.7). The control group recorded a decrease in accelerometer counts per week from baseline to 12 months (p=0.03).
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