Exercise in Adolescents With Type 1 Diabetes
- Conditions
- Type 1 Diabetes
- Interventions
- Other: Exercise bouts
- Registration Number
- NCT04418869
- Lead Sponsor
- Region Örebro County
- Brief Summary
Regular physical activity is an important part of diabetes management in adolescents with type 1 diabetes (T1D). Increased physical activity has several beneficial effects such as improved lipid profile, insulin sensitivity and quality of life. In addition, a reduced HbA1c is often seen in association to increased physical activity. However, the effect on glycemic control and the acute glycemic response seems to differs between different types of exercise. This issue is poorly studied in adolescents with T1D and the mechanism behind this is not fully understood.
The primary aim of this study was to compare the acute effects on glycemia of resistance and two aerobic continuous and intermittent exercise bouts in adolescents with type 1 diabetes. Secondarily, the investigators want to compare the different exercise according to hormonal changes and expression of mRNA in muscle.
At a baseline visit the participants was tested for maximal oxygen consumption (pVO2peak) and maximal strength (1-RM). The study participants then performed three exercise bouts and one control session (resting), each on 45 minutes, in a randomized order. Measurement was performed during and after the exercise.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- Male
- Target Recruitment
- 8
- Male
- Type 1 diabetes
- HbA1c < 65 mol/mol at inclusion
- Regularly performing physical activity
- Aged 16-18 years old
- Less than 0.5 U/kg in insulin requirements
- Duration of diabetes less than one year.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description Exercise Exercise bouts All subject will perform three different exercise bouts and one control session.
- Primary Outcome Measures
Name Time Method Change in plasma glucose during exercise and recovery Plasma glucose were measured at 5 minutes before and at start of the bouts. Thereafter glucose was measured at 5,10,15,30 and 45 minutes during exercise. In addition glucose were measured at 15, 30, 45 and 60 minutes during the initial recovery period. Plasma glucose (mmol/l) measured by an hand-held glucometer
- Secondary Outcome Measures
Name Time Method Sensor glucose Blinded continuous glucose measurement was started when the exercise bouts were finished and were there after used during the next 22 hours (until the next morning at 08:00 am). Blinded continuous glucose measurement (mmol/l) were used to measure sensor glucose
Changes in levels of hormones during exercise and recovery Serum samples were collected at baseline and after 15 ,30 ,45 of exercise and after 15 minutes of recovery for later analysis Insulin, glucagon, catecholamines, insulin-like growth factor I, cortisol, growth hormone
Change in levels of messenger ribonucleic acid (mRNA) between baseline and exercise. One biopsy (baseline) were collected approximately one week before the first exercise bout and thereafter one biopsy appr. 60 minutes after each exercise bout. mRNA levels were analyzed with microarray from muscle biopsies and compared between exercise bouts and baseline.
Comparisons of levels of messenger ribonucleic acid (mRNA) between different exercise bouts. One biopsy was collected appr. 60 minutes after each exercise bout. mRNA levels were analyzed with microarray from muscle biopsies and compared between the exercise bouts.
Change in heart rate during exercise. Heart rate was monitored continuously during exercise from 5 minutes before start of exercise until the bout was finished (time-point 45 minutes). Heart rate (beats per minute) were monitored by pulse oximetry and compared between the exercise bouts.
Change in hemoglobin saturation during exercise. Hemoglobin saturation was measured continuously during exercise from 5 minutes before start of exercise until the bout was finished (time-point 45 minutes). Hemoglobin saturation (SpO2 %) was monitored by pulse oximetry and compared between the exercise bouts.
Change in cardiac output. Cardiac output was measured continuously during exercise from 5 minutes before start of exercise until the bout was finished (time-point 45 minutes). Cardiac output (L/min) was measured with Physioflow and compared between the exercise bouts.