Day-to-Day Glycemic Variability Using Continuous Glucose Monitors in Endurance Athletes
Authors' conclusion
This study provides reference indices under standardized diet and exercise conditions for glycemic variability derived from CGMs in endurance athletes which are similar than previously reported for healthy individuals, despite strenuous daily training and a high daily energy and carbohydrate diet.
Study context
- Population
- Elite racewalkers (n = 7 men, 22.4 ± 3.5 years, VO2max 61.6 ± 7.3 mL kg-1 min-1) on a high-energy, high-carbohydrate diet with standardized daily exercise; Freestyle Libre 2 continuous glucose monitors (CGMs)
- Participants
- 12 elite racewalkers
- Outcome
- Glycemic variability (MAGE, MODD, SD) of interstitial glucose
Methodological detailsstandardized diet and exercise, two 4-d trials
- Standardized diet and exercise
- Two 4-d trials
Main finding
As reported in the abstract
24-h glycemic variability
24-h mean of daily differences (MODD)
12.6 ± 1.8 mg/dL
0.7 ± 0.1 mmol/L
24-h MAGE
36.0 ± 5.4 mg/dL
2.0 ± 0.3 mmol/L
24-h SD
16.2 ± 1.8 mg/dL
0.9 ± 0.1 mmol/L
Further findings
24-h vs Overnight
Mean glucose, 24-h vs overnight · higher over 24 h
P < 0.0001
Women vs Men
24-h mean glucose by sex · lower in women; d = 1.4
P = 0.059
Original publication
Day-to-Day Glycemic Variability Using Continuous Glucose Monitors in Endurance Athletes. J Diabetes Sci Technol. Published 10 May 2024. doi:10.
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