The Effects of Different Exercise Modalities in Adolescents With Type 1 Diabetes Using AID Systems

NCT ID: NCT05619198

Last Updated: 2023-04-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-12-19

Study Completion Date

2024-11-30

Brief Summary

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Objective:

The overall objective of this study is to assess the efficacy of the current recommended guidelines for physical activity (PA) in response to acute moderate intensity continous exercise (MICE) and high intensity interval exercise (HIIE) among adolescents with type 1 diabetes (T1D) using automated insulin delivery (AID) systems (MiniMed 780G and Tandem Control-IQ).

Methods:

This study will be a two-period, cross-over, clinical trial with between and within cohort comparisons of two different exercise modalities among a total of 24 age-, sex-, and insulin-dose-matched adolescents with T1D (12 using MiniMed 780G and 12 using Tandem Control-IQ).

Endpoint:

The primary endpoint is sensor-derived time in range (3.9 mmol/L-10.0 mmol/L) around exercise

Detailed Description

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Participants included in the study will perform a cardiopulmonary exercise testing (CPET) before the exercise study visits, to prescribe subsequent exercise intensity thresholds. Participants will have a canula placed in a antecubital vein for plasma sampling during the test.

Participants will undertake two exercise visits each including a bout of exercise on a stationary bicycle of either one of two exercise modalities; i.) high-intensity interval exercise with sprints at \~85% of VO2max (HIIE); ii.) moderate intensity continuous exercise at \~60% of VO2max (MICE).

Participants will arrive at the research facility, Steno Diabetes Center Copenhagen, in the afternoon. As per the current recommended guidelines, the MICE-session will be announced to the AID systems 60 minutes in advance, whereas the HIIE-session will not be announced. Participants will have a canula placed in a antecubital vein for plasma sampling.

Participants will rest for 60 minutes, exercise for 45 minutes and rest again for 75 minutes before leaving the research facility. During exercise participants will be fitted with a spirometry face mask to compute ventilatory thresholds and indirect calorimetry (Vyaire Vyntus® CPX, Intramedic A/S) and a telemetry chest strap (Polar H10) for integrated HR heart rate (HR) measurements with the spirometry device.

In the MICE session: After 15 minutes post-exercise rest the temporary target/exercise mode is turned off.

Around each study visit (24 hours prior until 24 hours after), sensor glucose as well as sleep and physical activity will be recorded. Sensor glucose will be measured by participants' own devices. Sleep and physical activity level will be assessed with a wrist-worn accelerometer, ActiGraph wGT3X-BT (ActiGraph, Pensacola, FL).

Study days will be separated by at least three days.

Conditions

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Type 1 Diabetes

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

A two-period, cross-over, clinical trial with between and within cohort comparisons of two different exercise modalities in adolescents with type 1 diabetes
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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High Intensity Interval Exercise

Plasma and sensor glucose is monitored before, during and after a bout of high intensity interval exercise

Group Type ACTIVE_COMPARATOR

High Intensity Interval Exercise

Intervention Type BEHAVIORAL

High Intensity Interval Exercise:

* 5 minutes resting phase @ 0 watts.
* 5-minute warm up phase @ 20 watts.
* 40 minutes of interval work consisting of eight bouts of 1-minute cycling at a power output corresponding to \~85% of VO2max interspersed with 4-minute recovery periods at 20 watts.
* 5 minutes resting phase @ 0 watts.

Moderate Intensity Continous Exercise

Plasma and sensor glucose is monitored before, during and after a bout of moderate intensity continous exercise

Group Type ACTIVE_COMPARATOR

Moderate Intensity Continous Exercise

Intervention Type BEHAVIORAL

Moderate Intensity Continous Exercise:

* 5 minutes resting phase @ 0 watts.
* 5-minute warm up phase @ 20 watts.
* 40 minutes of MICE 65% VO2max.
* 5 minutes resting phase @ 0 watts.

Interventions

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High Intensity Interval Exercise

High Intensity Interval Exercise:

* 5 minutes resting phase @ 0 watts.
* 5-minute warm up phase @ 20 watts.
* 40 minutes of interval work consisting of eight bouts of 1-minute cycling at a power output corresponding to \~85% of VO2max interspersed with 4-minute recovery periods at 20 watts.
* 5 minutes resting phase @ 0 watts.

Intervention Type BEHAVIORAL

Moderate Intensity Continous Exercise

Moderate Intensity Continous Exercise:

* 5 minutes resting phase @ 0 watts.
* 5-minute warm up phase @ 20 watts.
* 40 minutes of MICE 65% VO2max.
* 5 minutes resting phase @ 0 watts.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Age 13-17 years old
* Type 1 diabetes \> 1 year
* Use of Tandem t:slim X2 Control-IQ or Medtronic MiniMed 780G with connected continous glucose monitor \> 3 months
* HbA1c below 75 mmol/L

Exclusion Criteria

* Use of anti-diabetic medicine other than insulin
* Breastfeeding, pregnancy or planning to become pregnant
* Lack of compliance with key study procedures at the discretion of the investigator
Minimum Eligible Age

13 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Steno Diabetes Center Copenhagen

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Emilie Lindkvist, MD

Role: PRINCIPAL_INVESTIGATOR

Steno Diabetes Center Copenhagen, Clinical Research

Locations

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Steno Diabetes Center Copenhagen

Herlev, , Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Emilie Lindkvist, MD

Role: CONTACT

+45 20187762

Kirsten Nørgaard

Role: CONTACT

Facility Contacts

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Emilie B Lindkvist

Role: primary

+4520187762

Jannet Svensson

Role: backup

Other Identifiers

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MODE2022

Identifier Type: -

Identifier Source: org_study_id

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