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Influence of Menstrual Cycle Phases on the Glycemic Control of Aerobic or HIIT Exercise in Adult Women With Type 1 Diabetes

Continuous glucose monitors, as a technology that aims to improve glycaemic control in patients with type 1 diabetes, must always adjust to changes in blood glucose levels in these patients, e.g. during sporting activities. In women, in particular, menstruation and its different phases can affect blood glucose levels in different ways. Therefore, this study aims to determine whether there is a different behaviour of blood glucose levels during aerobic or high-intensity exercise in different phases of menstruation…

ClinicalTrials.gov IDNCT06729242
PhaseNA
Enrollment40
SponsorUniversity of Valencia
Age18 Years
SexFEMALE
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Conditions studied

Diabetes Mellitus, Type I, Menstruation

About this study

Continuous glucose monitors, as a technology that aims to improve glycaemic control in patients with type 1 diabetes, must always adjust to changes in blood glucose levels in these patients, e.g. during sporting activities. In women, in particular, menstruation and its different phases can affect blood glucose levels in different ways. Therefore, this study aims to determine whether there is a different behaviour of blood glucose levels during aerobic or high-intensity exercise in different phases of menstruation. If so, we will try to model this behaviour and create specific guidelines in this regard in terms of physical exercise programming in women. In addition, the information derived from this study will be used to design better artificial pancreas systems that take into account the effects of the menstrual cycle in women.

Interventions

Primary outcomes

Eligibility information

Inclusion Criteria: Age between 18-45 years T1D with a diabetes duration for more than 2 years Glycated hemoglobin (HbA1c) \< 8.5% (\<69 mmol mol-1) Stable insulin regimen in the past 6 months with less than 20% change in total insulin daily dose Multiple daily injections or insulin pump Weekly physical activity of 90 min or more, but no practicing any sport as amateur or professional. Exclusion Criteria: Clinical conditions or use of medications (other than insulin) known to affect glycemic control (e.g., oral/parenteral steroids or metformin, among others).

Study locations

Before you participate: Varda Clinical is an independent discovery tool, not the study sponsor or a medical provider. Eligibility can only be determined by the official study team. Discuss potential risks and benefits with a qualified healthcare professional.

Source: ClinicalTrials.gov. Record last refreshed by Varda Clinical: 2026-09-27.