Cross-Sectional and Individual Relationships between Physical Activity and Glycemic Variability
Joshua R Sparks1, Mark A Sarzynski2, J Mark Davis2
1Reproductive Endocrinology and Women's Health Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA.
Translational Journal of the American College of Sports Medicine
|September 12, 2022
Summary
Greater physical activity (PA) in overweight adults is linked to better blood sugar control. Light and moderate-to-vigorous PA positively impact glycemic health, reducing hyperglycemia and improving time in range.
Area of Science:
- Metabolic Health
- Exercise Physiology
- Clinical Monitoring
Background:
- Overweight and obese adults face higher risks of impaired glycemic health due to sedentary behavior and reduced physical activity (PA).
- Assessing glycemic health in free-living environments offers valuable insights beyond clinical measurements.
Purpose of the Study:
- To investigate the relationship between physical activity (PA) and glycemic health.
- To utilize continuous glucose monitoring (CGM) for assessing glycemic health in real-world settings.
Main Methods:
- Twenty-eight overweight/obese adults wore accelerometers and CGMs for 7 days.
- Calculated daily PA metrics (light PA, moderate-to-vigorous PA, total PA) and glycemic parameters (mean glucose, variability).
Main Results:
- Light PA positively correlated with time in glycemic range and negatively with hyperglycemia.
- Total PA and SD of MVPA/total PA were linked to lower mean glucose concentrations.
- Most participants showed negative associations between PA and glycemic measures.
Conclusions:
- Increased total and intensity-specific PA are associated with improved glycemic control (lower mean glucose, more time in range, less hyperglycemia).
- The unexpected relationship between PA variability and glucose concentrations warrants further investigation.
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