N/A
Completed N=77
Power of Choice on Autonomy, Motivation, Exercise Adherence, and Cardiorespiratory Fitness
Elevated Blood Sugar
Source: ClinicalTrials.gov NCT03576924 ↗
Enrolled (actual)
77
Serious AEs
0.0%
Results posted
May 2025
Primary outcomePrimary: Perceived Autonomy Support — 6.78; 6.85; 6.77 score on a scale
Summary
People with elevated blood sugar levels are at increased risk of developing chronic medical conditions such as obesity, type 2 diabetes, and cardiovascular disease. Improving cardiorespiratory fitness (CRF) in adults with elevated blood sugar levels is important for preventing the onset of such medical conditions. The primary aim of this study is to determine whether providing a choice between two different types of exercise in a diabetes prevention intervention improves perceived autonomy, exercise motivation, physical activity behavior, and subsequently CRF to a greater extent than imposed exercise among adults with elevated blood sugar.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Perceived Autonomy Support |
6.78; 6.85; 6.77 | — |
| SECONDARY Change in Exercise Motivation Regulation |
10.0; 10.1; 8.9; 11.7; 11.4; 10.8 | — |
| SECONDARY Change in Physical Activity Behavior (Self-Report) |
21.2; 27.5; 27.8; 37.1; 35.0; 44.6 | — |
| SECONDARY Change in Physical Activity Behavior (Accelerometry) |
31.9; 40.5; 38.9; 29.5; 32.9; 34.5 | — |
| SECONDARY Change in Physical Activity Behavior (Fitbit) |
71.4; 70.4; 68.7; 63.7; 61.8; 56.9 | — |
| SECONDARY Change in Cardiorespiratory Fitness |
35.4; 35.4; 35.9; 38.1; 36.7; 38.0 | — |
Eligibility Criteria
Inclusion Criteria
- BMI 22-45 kg/m2;
- HbA1c score indicative of elevated blood sugar (5.7-6.4%);
- Blood pressure of <160/99 mm Hg assessed according to Canadian Hypertension Education Program guidelines;
- Without diagnosed diabetes;
- No prior history of cardiovascular disease;
- Not on hormone replacement therapy;
- Not on beta-blockers;
- Cardiovascular medications (e.g., statins) will be allowed if patients are on stable therapy (6 months on same dose)
Exclusion Criteria
- Taking glucose-lowering medications (i.e. metformin);
- Any explicit contraindications to exercise (e.g., musculoskeletal injury)
Data sourced from ClinicalTrials.gov (NCT03576924). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.