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Variation in Sleep Time and Glucose Variation in Patients with Type 2 Diabetes Mellitus

Sleep Duration Variability: a Therapeutic Target of Melatonin for Glycemic Control in patients with Type 2 Diabetes Mellitus

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
REBEC
Registry ID
RBR-6wg54rb
Enrollment
Unknown
Registered
2021-02-22
Start date
2022-09-01
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

non-insulin dependent diabetes mellitus

Interventions

This will be an experimental, clinical trial, double-blind placebo controlled study with 30 patients. After the project to be approved by the ethics and research committee of UFMG (COEP), patients who

Sponsors

Universidade Federal de Minas Gerais
Lead Sponsor
Universidade Federal de Minas Gerais
Collaborator

Eligibility

Age
40 Years to No maximum

Inclusion criteria

Inclusion criteria: This project will include patients diagnosed with diabetes mellitus type 2 for more than one year; age greater than or equal to 40 years; family history of diabetes mellitus type 2; glycosylated haemoglobin between 7 and 10%

Exclusion criteria

Exclusion criteria: Pregnancy; corticosteroids use within less than 3 months; or other medications that elevate glycemia; diseases that significantly alter glycemia stability (renal failure, acute coronary syndrome, cancer, liver failure, among others); uncontrolled diabetes, with polydipsia, polyuria, or weight loss requiring insulin or other drugs; high risk for severe sleep apnea; depression; shift work; epilepsy; refusal to participate in this research at any time

Design outcomes

Primary

MeasureTime frame
A reduction in capillary blood glucose variability is expected. We will calculate the differences between pre- and postprandial glycemia. we will then make a comparison between the sum of these differences in the period that the patient used melatonin and in the period that he used placebo. We will assess whether this difference was statistically significant using the Student's T test for unpaired samples

Secondary

MeasureTime frame
We will have as a secondary outcome the evaluation of the mean differences in glycemia at each time (fasting and 2 hours after fasting/before lunch and 2 hours after lunch, before dinner and 2 hours after dinner) to understand whether the use of melatonin may affect the variability of blood glucose at some specific time of the day. We will assess whether this difference was statistically significant using the Student's t test for unpaired samples. In order to analyze the effect of melatonin after a greater number of days of use, we will perform a specific analysis of the glycemic variability mentioned on the last day of glycemia measurement in the first and third weeks through the Student's T test of non-paired samples;We will also do a categorical analysis that will take into account the coefficient of variation of blood glucose levels during the use of placebo and during the use of melatonin. We will consider stable when this value is less than 36% and not stable when higher than this value. We will evaluate whether there was a difference in the weeks using melatonin and placebo in relation to this stability criterion defined in the literature, as already mentioned in this text

Countries

Brazil

Contacts

Public ContactAlmir Tavares Junior

Universidade Federal de Minas Gerais

posgn@icb.ufmg.br; almirtav.bh@gmail.com+55 (31) 3409 2545

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Feb 9, 2026