Swimming With the Omnipod 5 Automated Insulin Delivery System: An Observational Investigation of Swimmers With Type 1 Diabetes in the Omnipod 5 Pivotal Trial
Authors' conclusion
Swimming with AID was associated with generally modest declines in glucose. The Omnipod 5 System largely preserved automation in water (often via Automated Mode: Limited) without reverting to Manual Mode. Starting glucose dominated glycemic trajectory, with larger declines but low hypoglycemia risk at a higher starting glucose, and smaller changes, but more hypoglycemia at a lower starting glucose. Insulin suspension was not enough to reliably prevent hypoglycemia when starting glucose was < 180 mg/dL, highlighting the need for proactive carbohydrate intake with a lower starting glucose, even with AID.
Study context
- Population
- Swimmers with T1D using the Omnipod 5 Automated Insulin Delivery (AID) System (aged 11 ± 2 years, 57% female), Omnipod 5 pivotal trial124 swims
- Participants
- 7 participants
- Outcome
- Glycemic patterns and system operation during swimming
- Follow-up
- During swims
Methodological detailsSwims recorded with an activity tracker; online surveys after swims
- Swims recorded with an activity tracker; online surveys after swims
Main finding
As reported in the abstract
Starting glucose, median (IQR)
133 (93-178) mg/dL
Glucose change during swims, median (IQR)
−17 (−61 to 7) mg/dL
Swim time in Automated Mode
98%
95%–100%
Share of that time in Automated Mode: Limited
58%
24%–70%
Observational data: associations, not effects.
Further findings
Glucose change during swims with starting glucose ≥ 181 mg/dL
- Largest glucose decreases
- −86 (−111 to −25) mg/dL
Carbohydrate intake 2-h before swims
- Carbohydrate intake
- 20 (0-32) grams
Activity feature use in swims with starting glucose < 90 mg/dL
- Activity feature used
- 87%
Original publication
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