Abstract
ObjectiveThe aim of the study was to describe how physical exercise affects metabolic control, insulin requirements and carbohydrate intake in children who use hybrid closed-loop systems. MethodsCross-sectional study design. The sample included 21 children and adolescents diagnosed with type 1 diabetes. During the study, participants were monitored for a period of 7 days to gather comprehensive data on these factors. ResultsNine participants (42.9%) had switched to exercise mode to raise the target glucose temporarily to 150mg/dL. The HbA1c values ranged from 5.5% to 7.9% (median, 6.5%; IQR, 0.75). The percentage of time within the target range of 70-180mg/dL was similar; however, there was an increased duration of hyperglycaemia and more autocorrections on exercise days. The time spent in severe hyperglycaemia (> 250mg/dL) increased by 2.7% in exercise compared to non-exercise days (P=.02). It is worth noting that hypoglycaemic episodes did not increase during the exercise days compared with non-exercise days. ConclusionThe hybrid closed-loop system was effective and safe in children and adolescents with type 1 diabetes during the performance of competitive sports in real life.
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