The purpose of this study is to address whether inactive individuals with prediabetes who take part in the Small Steps for Big Changes program, which is a 3-week supervised exercise and lifestyle change program with brief counseling, will be more adherent to regular exercise one year after program completion compared to before they took part in the program.
The study is a one-group repeated measures design and the primary outcome is exercise adherence at 12 months post the 3-week supervised exercise program. There is no randomization of individuals to conditions. Exercise adherence will be measured using self-report physical activity (using the Godin leisure time exercise questionnaire) and a subsample will also wear tri-axial accelerometers to measure total time spent in moderate-to-vigorous physical activity assessed over 7 days. Secondary outcomes include physical fitness, haemoglobin A1C, quality of life, self-regulatory efficacy, anthropometrics, diet and exercise-related cognitive errors. The 3-week lifestyle program includes six sessions with a lifestyle coach and exercise sessions performed at home. These sessions will focus on regular healthy lifestyle that includes walking (or exercise of any kind) at least three times per week and will highlight simple dietary strategies that are linked to reduced risk of T2D. The 3-week supervised exercise program includes brief exercise counseling sessions that teach participants self-regulatory skills to promote independence and long-term adherence to exercise and a healthy diet. At the conclusion of the three-week program, participants will be asked to continue exercising a minimum of three times per week for twelve months on their own.
Study Type
OBSERVATIONAL
Enrollment
500
The 3-week lifestyle change program will introduce participants to a regular healthy lifestyle including exercise and dietary changes for reducing sugar intake, reducing refined/processed carbohydrate intake, increasing vegetable consumption. The 3-week program will include six supervised exercise sessions and three exercise sessions performed independently (e.g., at home or outside of the lab). The supervised session will include brief behavioral counseling sessions that teach participants self-regulatory skills to promote independence and long-term adherence to exercising and dietary changes.
YMCA of Okanagan
Kelowna, British Columbia, Canada
RECRUITINGminutes of moderate to vigorous physical activity
objective measure of physical activity will be measured using tri-axial accelerometers in a subsample of \~100 participants
Time frame: change from before participants begin the program to 52 weeks after they finish the program for 7 consecutive days
independent bouts of physical activity
self-reported measure of bouts of physical activity as assessed by the Godin Leisure Time Exercise Questionnaire
Time frame: change from when participants begin the program to 52 weeks after they finish the program
glucose control
haemoglobin A1C
Time frame: change from when participants begin the program to 52 weeks after they finish the program (week 55)
Aerobic fitness
six-minute walk test
Time frame: before the program begins (week 0), after the program is completed (week 3), 24 weeks after completion of the program (week 27), and 52 weeks after completion of the program (week 55)
Perceived health-related quality-of-life
SF-12 Health Survey (Ware, Kosinski, \& Keller, 1995)
Time frame: before the program begins (week 0), 24 weeks after completion of the program (week 27), and 52 weeks after completion of the program (week 55)
Self-regulatory efficacy for physical activity and diet
questionnaire
Time frame: before the program begins (week 0), after the program is completed (week 3), 4-weeks after the completion of the program (week 7), 24 weeks after completion of the program (week 27), and 52 weeks after completion of the program (week 55)
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minutes of moderate to vigorous physical activity
objective measure of physical activity will be measured using tri-axial accelerometers in a subsample of \~100 participants
Time frame: 24 weeks after program completion (week 27) for 7 consecutive days
independent bouts of physical activity
self-reported measure of bouts of physical activity as assessed by the Godin Leisure Time Exercise Questionnaire
Time frame: 4- (week 7) and 24-weeks (week 27) after completion of the program