The Banana Exercise Type 1 Diabetes Study

Not Applicable

Not yet recruiting

• Conditions: Type 1 Diabetes

• Registration Number: NCT06917274
• Lead Sponsor: University of Aarhus

Brief Summary

Former and current KADET athletes participate in two controlled training sessions: one with a banana 20 minutes pre-exercise and one without. Tandem Data recorded includes sensor glucose, training details, insulin dosing, and meal intake. Continuous glucose monitoring (CGM) data is assessed. Endpoints include differences in glucose levels, hypoglycemia events (SG \<3.9 mmol/L), and Time in Range during training

Detailed Description

Participants:

Former and current KADET athletes invited via a Facebook group. Previous participants in study projects who have expressed interest in being contacted for future studies.

Protocol:

Participants provide written consent for data collection and use.

Each participant completes two training sessions under controlled conditions, including:

Same training time Standardized pre-training meal timing and insulin corrections Similar intensity and environmental factors If pre-training hypoglycemia occurs, training is rescheduled or corrected with glucose tablets, which are documented.

Study Conditions:

Session 1: Participant eats a banana 20 minutes before training. Session 2: No pre-training food intake.

Tandem Control IQ users (insulin pump) take a microbolus (0.05 IE) before banana intake.

Recorded Data by participant:

Training start and end times Sensor glucose (SG) at start and end of training Training type and intensity (Borg scale, heart rate monitoring) Last insulin dose (meal and correction) Last meal details (content and timing) Banana documentation (photo, weight with peel, ripeness level)

CGM data are also assessed.

Endpoints:

Differences in GCG glucose level Time to hypoglycemia and number of hypoglycemia events (SG \<3.9 mmol/L) on banana vs. non-banana days.

Percentage of Time in Range during training. Additional data is reported as available.

Study Timeline

• Status Verified: 2025-03
• Study First Submitted: 2025-03-20
• Study First Submitted QC: 2025-03-31
• Last Update Submitted: 2025-03-31
• Study Start: 2025-04-01
• Study First Posted: 2025-04-08
• Last Update Posted: 2025-04-08
• Primary Completion: 2025-11-01
• Study Completion: 2026-02-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• type 1 diabetes

Exclusion Criteria

• cardiovascular comorbidity
• neuropathy

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Primary Outcome Measures

Name	Time	Method
CGM glucose	approximately 60 minute monitoring period during exercise	CGM glucose Time in Range between 3.9 and 10 mmol/l

Secondary Outcome Measures

Name	Time	Method
Time to hypoglycemia	approximately 30 to 30 minutes	minutes to hypoglycemia after exercise has begun
Borg scale	Borg scale is assessed approximately 15 minutes after exercise	Level of excaution evaluated on Borg scale from 6-20