Influence of physical exercise on the accuracy of continuousglucose sensors in children and adolescents with Type 1 Diabetes mellitus

Authors

DOI:

https://doi.org/10.47197/retos.v74.113751

Keywords:

Biomedical Technology, Clinical Medicine, Diabetic Complications, Hypoglycemia, Life Style, Self Care

Abstract

Introduction and Objective: The objective of this study was to analyze the effect of duration, intensity and time of day of physical exercise on the accuracy of continuous blood glucose monitoring (CGM) sensors in children or adolescents aged 6 to 19 years with DM1.

Methodology: An observational study with a short follow-up (7 days) was carried out. Exercise was assessed using a physical activity report.

Results: The accuracy of the CGM was analyzed by %MARD considering cutoff points < 10%, ≤ 18% and ≤ 28%. The increase in time in minutes per week of physical exercise was related to the increase in the percentage of %MARD inadequate for clinical decision making for all cutoff points used. However, for the cutoff point of %MARD ≤ 28%, it was observed that days of physical exercise lasting >60 minutes increase inadequate %MARD (20.8%) for clinical decision-making when compared to <60 minutes of exercise on the day (15.2%) and days without exercise (10.4%).

Conclusion: Increasing the time of physical exercise per week can reduce the accuracy of the CGM blood glucose estimate, making it necessary to use capillary blood glucose measurements, especially in the presence of symptoms of hypoglycemia.

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14-11-2025

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Original Research Article

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Vaz Alves, L., Fornari Laurindo, L., Villa Chagas, H., Portero Sloan, K., dos Santos Haber, J. F., Maria Barbalho, S., Almeida Gabriel Filho, L. R., & Baisi Chagas, E. F. (2025). Influence of physical exercise on the accuracy of continuousglucose sensors in children and adolescents with Type 1 Diabetes mellitus. Retos, 74, 371-382. https://doi.org/10.47197/retos.v74.113751