Comparison of FiAsp and Aspart During Postprandial Exercise in Adults With Type 1 Diabetes

Institut de Recherches Cliniques de Montreal40 enrolled

Overview

Hypoglycemia is the main barrier for physical activity practice of patients with type 1 diabetes (T1D). For postprandial exercise, anticipation with meal insulin bolus reduction is the recommended method to reduce exercise-associated hypoglycemic risk. The impact of faster acting Aspart (FiAsp) pharmacokinetic on hypoglycemic risk has not yet been explored. This study will explore two different timings for exercise onset. Objective: To compare the impact of rapid-acting insulin Aspart and faster acting Aspart (FiAsp) on glucose reduction during exercise. Design: This study is a randomized, four-way, crossover study to compare the efficacy of 1) rapid-acting insulin Aspart, and 2) FiAsp on glucose reduction during an exercise performed 60 minutes or 120 minutes after breakfast. The insulin used and the timing of the exercise will be randomized. This project will be conducted at Institut de recherches cliniques de Montréal (IRCM, Montreal, Canada). Hypothesis: Faster acting Aspart (FiAsp) will be non-inferior to insulin Aspart for hypoglycemic risk.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Type 1 Diabetes Mellitus

Interventions

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Males and females ≥ 18 years of old. 2. Clinical diagnosis of type 1 diabetes for at least one year. 3. HbA1c ≤ 9.5%. 4. Patients using multiple daily injections with basal-bolus insulin regimen and insulin analogs (pre-meal: Aspart, Lispro, Guilisine or Fiasp; basal: Detemir, Glargine U100 \& U300, Degludec U100). 5. Written informed consent given. Exclusion Criteria: 1. Clinically significant microvascular complications: nephropathy (estimated glomerular filtration rate below 40 ml/min), neuropathy (especially diagnosed gastroparesis) or severe proliferative retinopathy as judged by the investigator. 2. Recent (\< 3 months) acute macrovascular event e.g. acute coronary syndrome or cardiac surgery. 3. Anemia (Hb \< 100g/L). 4. Ongoing pregnancy or breastfeeding. 5. Severe hypoglycemic episode within two weeks of screening. 6. Other serious medical illness likely to interfere with study participation or with the ability to complete the exercise periods by the judgment of the investigator (e.g. orthopedic limitation). 7. Ongoing treatment with CSII (Continuous Subcutaneous Insulin Infusion) "insulin pump therapy". 8. Participation to a clinical trial in the last 3 months prior to inclusion in this study.

Outcomes

Primary Outcomes

Decrease in plasma glucose levels during exercise

Difference between glucose levels at the beginning of the exercise and the lowest glucose levels from the start of the exercise until the end of the exercise