Herzig, David; Groessl, Michael; Álvarez-Martínez, Mario; Reverter-Branchat, Gemma; Nakas, Christos T.; Kosinski, Christophe; Stettler, Christoph; Bally, Lia (2021). Effects of Aerobic Exercise on Systemic Insulin Degludec Concentrations in People With Type 1 Diabetes. Journal of diabetes science and technology, 17(1), pp. 172-175. Sage 10.1177/19322968211043915
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BACKGROUND
There is conflicting evidence on the effect of exercise on systemic insulin concentrations in adults with type 1 diabetes.
METHODS
This prospective single-arm study examined the effect of exercise on systemic insulin degludec (IDeg) concentrations. The study involved 15 male adults with type 1 diabetes (age 30.7 ± 8.0 years, HbA1c 6.9 ± 0.7%) on stable IDeg regimen. Blood samples were collected every 15 minutes at rest, during 60 minutes of cycling (66% VO2max) and until 90 minutes after exercise termination. IDeg concentrations were quantified using high-resolution mass-spectrometry and analyzed applying generalized estimation equations.
RESULTS
Compared to baseline, systemic IDeg increased during exercise over time (P < .001), with the highest concentrations observed toward the end of the 60-minute exercise (17.9% and 17.6% above baseline after 45 minutes and 60 minutes, respectively). IDeg levels remained elevated until the end of the experiment (14% above baseline at 90 minutes after exercise termination, P < .001).
CONCLUSIONS
A single bout of aerobic exercise increases systemic IDeg exposure in adults on a stable basal IDeg regimen. This finding may have important implications for future hypoglycemia mitigation strategies around physical exercise in IDeg-treated patients.
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