Factory-Calibrated Continuous Glucose Monitoring System Accuracy During Exercise in Adolescents With Type 1 Diabetes Mellitus
Authors' conclusion
This CGM system showed alterations in accuracy during exercise. Our findings additionally suggest interstitial fluid changes in muscles during exercise alter accuracy of CGM; however, additional research is required.
Study context
- Population
- Adolescents (13–20 years) with T1D exercising on a treadmill for 40 minutes, with a 10-minute break at minute 20
- Comparison
- Dexcom G6 CGM vs glucometer during exercise; CGM on buttocks vs abdomen
- Outcome
- Accuracy of the Dexcom G6 vs glucometer (MARD, MAD, Clarke Error Grid)
- Follow-up
- Before, every 10 minutes during and after exercise
Performance
As reported in the abstract
CGM accuracy during exercise
Mean absolute relative difference (MARD) increased during exercise, improved after exercise
14%-33%
Mean absolute difference (MAD) increased during exercise, improved after exercise
24.3-34 mg/dL
Further findings
| Outcome | OR (95% CI) | P value |
|---|---|---|
| Accuracy by CGM location (buttocks) · during exerciseOdds of Clarke error grid Zone A | 0.146 (0.052–0.415) | P = 0.0003 |
- Accuracy by CGM location (buttocks) — MARD increased markedly with CGM on the buttocks
- 18%-46%
- Accuracy by CGM location (buttocks) — MAD increased markedly with CGM on the buttocks
- 30-41 mg/dL
Original publication
Factory-Calibrated Continuous Glucose Monitoring System Accuracy During Exercise in Adolescents With Type 1 Diabetes Mellitus. J Diabetes Sci Technol. Published 1 September 2022. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →