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Carbohydrate-based Strategies to Prevent Exercise-induced Hypoglycemia

maanantai 8. kesäkuuta 2020 päivittänyt: Rémi Rabasa-Lhoret, Institut de Recherches Cliniques de Montreal

Comparison of Two Carbohydrate Intake Strategies to Improve Glucose Control During Exercise in Adolescents and Adults With Type 1 Diabetes

To prevent hypoglycemia during prolonged exercise (>30 minutes), additional carbohydrate intake is frequently required. Carbohydrate intake required will vary with insulin regimens, timing and type of exercise as well as starting blood glucose level. In addition to the amount of carbohydrate ingested, the timing of carbohydrate intake could also have an impact on glucose control during exercise. Therefore, the objective of this study will be to compare the efficacy of two snacking strategies to maintain glucose levels in the target range during an exercise period in adolescents and adults with type 1 diabetes: 1) a snack containing ~0.5g of carbohydrates per kilogram of body weight - rounded to the nearest 5g - given 5 minutes before exercise; 2) a snack containing ~0.5g of carbohydrates per kilogram of body weight - rounded to the nearest 5g - distributed this way: ~40% given 5 minutes before exercise, ~30% after 20 minutes of exercise and the last ~30% after 40 minutes of exercise.

Tutkimuksen yleiskatsaus

Tila

Valmis

Ehdot

Interventio / Hoito

Opintotyyppi

Interventio

Ilmoittautuminen (Todellinen)

37

Vaihe

  • Ei sovellettavissa

Yhteystiedot ja paikat

Tässä osiossa on tutkimuksen suorittajien yhteystiedot ja tiedot siitä, missä tämä tutkimus suoritetaan.

Opiskelupaikat

  • Kanada
    • Quebec
      • Montreal, Quebec, Kanada
        • Institut de recherches cliniques de Montreal

Osallistumiskriteerit

Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.

Kelpoisuusvaatimukset

Opintokelpoiset iät

14 vuotta ja vanhemmat (Lapsi, Aikuinen, Vanhempi Aikuinen)

Hyväksyy terveitä vapaaehtoisia

Ei

Sukupuolet, jotka voivat opiskella

Kaikki

Kuvaus

Inclusion Criteria:

  1. Males and females ≥ 14 years of old.
  2. Clinical diagnosis of type 1 diabetes for at least one year.
  3. Last (less than 3 months) HbA1c ≤ 10%.
  4. Patients using multiple daily injections with basal-bolus insulin regimen.

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. Abnormal blood panel and/or anemia.
  4. Ongoing pregnancy.
  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. Treatment with CSII (Continuous Subcutaneous Insulin Infusion) "insulin pump therapy".

Opintosuunnitelma

Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.

Miten tutkimus on suunniteltu?

Suunnittelun yksityiskohdat

  • Ensisijainen käyttötarkoitus: Hoito
  • Jako: Satunnaistettu
  • Inventiomalli: Crossover-tehtävä
  • Naamiointi: Ei mitään (avoin tarra)

Aseet ja interventiot

Osallistujaryhmä / Arm
Interventio / Hoito
Active Comparator: Full snack given before exercise
A snack containing ~0.5g of carbohydrates per kilogram of body weight will be given 5 minutes before exercise
Muut: Exercise
Participants will be admitted at IRCM at 14:00. At 15:30, participants will performed a 60-minute exercise on the ergocycle at 60% of VO2 peak (moderate intensity). During exercise, capillary glucose levels will be measured every 10 minutes. At 16:30, the exercise will be completed and capillary glucose levels will be monitored every 20 minutes for 1 hour. At 17:30, the participant will be discharged.
Muut: Snack
Full snack or Distributed snack
Active Comparator: Distributed snack over exercise period
A snack containing ~0.5g of carbohydrates per kilogram of body weight distributed this way will be given: ~40% given 5 minutes before exercise, ~30% after 20 minutes of exercise and the last ~30% after 40 minutes of exercise.
Muut: Exercise
Participants will be admitted at IRCM at 14:00. At 15:30, participants will performed a 60-minute exercise on the ergocycle at 60% of VO2 peak (moderate intensity). During exercise, capillary glucose levels will be measured every 10 minutes. At 16:30, the exercise will be completed and capillary glucose levels will be monitored every 20 minutes for 1 hour. At 17:30, the participant will be discharged.
Muut: Snack
Full snack or Distributed snack

Mitä tutkimuksessa mitataan?

Ensisijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Percentage of time of capillary glucose levels spent between 4-10 mmol/L
Aikaikkuna: This outcome will be measured over 120 minutes
This time frame corresponds to the exercise period and the 1 hour following it
This outcome will be measured over 120 minutes

Toissijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Percentage of time of sensor glucose levels spent between 4-10 mmol/L
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Percentage of time of glucose levels spent below 4 mmol/L
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Decrease in glucose levels
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Difference between glucose level at the start of the exercise and the lowest glucose level from the start of the exercise until 1) the end of the exercise and 2) 1 hour after the end of the exercise.
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Increase in glucose level
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Difference between glucose level at the start of the exercise and the highest glucose level from the start of the exercise until 1) the end of the exercise and 2) 1 hour after the end of the exercise.
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Number of participants with an exercise-induced hypoglycemia below 4 mmol/L
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Number of participants with an exercise-induced hypoglycemia below 3.5 mmol/L
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Number of participants requiring an oral treatment for hypoglycemia
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Total number of hypoglycemia episodes requiring treatment
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Percentage of time of glucose levels spent above 10 mmol/L
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Mean time (minutes) to the first hypoglycemic event
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes)
This outcome will be measured for the exercise period only (60 minutes)
Mean glucose levels
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Standard deviation of glucose levels
Aikaikkuna: This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
This outcome will be measured for the exercise period only (60 minutes) and for the exercise period and the hour following the exercise (120 minutes)
Percentage of time of glucose levels between 4 and 10 mmol/L
Aikaikkuna: From the end of the exercise period to dinner time.
Dinner time will be up to the patient.
From the end of the exercise period to dinner time.
Percentage of time of glucose levels between 4 and 10 mmol/L
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Percentage of time of glucose levels between 4 and 10 mmol/L
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Percentage of time of glucose levels between 4 and 10 mmol/L
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)
Percentage of time of glucose levels spent below 4 mmol/L
Aikaikkuna: From the end of the exercise period to dinner time
Dinner time will be up to the patient.
From the end of the exercise period to dinner time
Percentage of time of glucose levels spent below 4 mmol/L
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Percentage of time of glucose levels spent below 4 mmol/L
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Percentage of time of glucose levels spent below 4 mmol/L
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)
Percentage of time of glucose levels spent above 10 mmol/L
Aikaikkuna: From the end of the exercise period to dinner time
Dinner time will be up to the patient
From the end of the exercise period to dinner time
Percentage of time of glucose levels spent above 10 mmol/L
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Percentage of time of glucose levels spent above 10 mmol/L
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Percentage of time of glucose levels spent above 10 mmol/L
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)
Number of participants requiring treatment for hypoglycemia
Aikaikkuna: From the end of the exercise period to dinner time
Dinner time will be up to the patient
From the end of the exercise period to dinner time
Number of participants requiring treatment for hypoglycemia
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Number of participants requiring treatment for hypoglycemia
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Number of participants requiring treatment for hypoglycemia
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)
Number of hypoglycemic episodes requiring treatment
Aikaikkuna: From the end of the exercise period to dinner time
Dinner time will be up to the patient
From the end of the exercise period to dinner time
Number of hypoglycemic episodes requiring treatment
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Number of hypoglycemic episodes requiring treatment
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Number of hypoglycemic episodes requiring treatment
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)
Mean glucose levels
Aikaikkuna: From the end of the exercise period to dinner time
Dinner time will be up to the patient
From the end of the exercise period to dinner time
Mean glucose levels
Aikaikkuna: From the end of the exercise period to midnight (7.5 hours)
From the end of the exercise period to midnight (7.5 hours)
Mean glucose levels
Aikaikkuna: From midnight to 6:00 next morning (6 hours)
From midnight to 6:00 next morning (6 hours)
Mean glucose levels
Aikaikkuna: From the end of the exercise period to 6:00 next morning (13.5 hours)
From the end of the exercise period to 6:00 next morning (13.5 hours)

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Institut de Recherches Cliniques de Montreal

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