NCT05557227Completed
Galactose - the Ideal Carbohydrate Supplement for Exercise in Type 1 Diabetes
Source: ClinicalTrials.gov · Last updated 29 Jun 2026
Brief summary (registry, in English)
In this study, 14 subjects with type 1 diabetes are studied in a randomized crossover study in which the subjects cycle at a fixed intensity at 60% of their maximum oxygen capacity (VO2 max) for 1 hour. Thirty minutes before each cycling test, participants consume a 200 ml beverage, consisting of either: 1) dextrose (20 g), 2) galactose (20 g), 3) lactose (20 g) or 4) water (sweetened). If blood sugar drops below 3.9 mmol/l, glucose infusion is given and blood sugar is kept just above 5 mmol/L. The trial days take place at least 4 days apart.
- Status (registry)
- Completed
- Study type
- Interventional
- Enrollment
- 14 (actual)
- First submitted
- 15 Aug 2022
- Start date
- 15 Dec 2022
- Primary completion date
- 1 Jan 2024
- Lead sponsor
- University of Aarhus
- Diseases
- Type 1 diabetes
- NCT number
- NCT05557227
What you commit to
- Study type: Interventional
- Participants enrolled: 14
- From 15 Dec 2022 to the primary completion date, 1 Jan 2024
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- Heart disease and other conditions which may be negatively affected by the VO2 max test and 1-hour cycling on study days
Other
- \- Diabetic nephropathy, neuropathy, and proliferative retinopathy
- Hypoglycemia unawareness
- Lactose intolerance
Who the study is looking for
- type 1 diabetes for at least 2 years
- age between 18 and 65 years
- HbA1c less than 70 mmol/mol
- Physically active (at least 150 minutes of moderate-to-vigorous intensity activity weekly)
- Insulin pen and pump treatment
- Men and women are eligible, but women will have to perform study days in the mid-cycle phase of the menstrual cycle.
Age in the registry: 18 years to 65 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| steno diabetes center Aarhus Coordinator of this site? Confirm its status | Aarhus | Denmark | Unknown status |
Related publications
- Pre-Exercise Galactose or Lactose Reduces Glycaemic Excursions During Exercise in Adults With Type 1 Diabetes: A Randomised, Double-Blind, Crossover Trial.Diabetes Obes Metab · 2026 · PMID 42264961
This page is information, not medical advice. Discuss any trial with your doctor.