About this trial
The goal of this clinical trial is to investigate the effect of menstrual cycle phases on postprandial triglyceride concentrations in healthy young female adults. The main question it aims to answer is: do postprandial triglyceride concentrations differ between the follicular and luteal phases of the menstrual cycle?
Participants will: visit the laboratory for a preliminary screening session to assess eligibility, and undergo two experimental sessions consisting of six hours of seated rest following the consumption of a high-fat meal (one session conducted in the early follicular phase, and one session conducted in the mid-luteal phase of the menstrual cycle).
Eligibility criteria
This trial accepts healthy volunteersQualifiers
English or French speaking
Ability to provide informed consent
Disqualifiers
History or evidence of chronic disease
Current use of hypolipemic medication
Current use of hormonal contraceptives
Current use of antidepressants
Trial design
Crossover
Treatments tested in this trial
Early Follicular Phase
Other interventionIn the early follicular phase of the menstrual cycle, participants will undergo 6 hours of seated rest after the consumption of a high-fat meal representing 33% of estimated daily energy expenditure and consisting of 59% of calories from fat.
Mid-Luteal Phase
Other interventionIn the mid-luteal phase of the menstrual cycle, participants will undergo 6 hours of seated rest after the consumption of a high-fat meal representing 33% of estimated daily energy expenditure and consisting of 59% of calories from fat.
Treatment groups
Trial outcomes
Primary outcomes
Change from baseline in plasma total triglyceride concentrations
Plasma total triglyceride concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline) and during the exposure (i.e., 0 or baseline, 30, 60, 90,120, 180, 240, 300, and 360 minutes).
Change from baseline in plasma buoyant triglyceride concentrations
Plasma buoyant triglyceride concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline) and during the exposure (i.e., 0 or baseline, 30, 60, 90,120, 180, 240, 300, and 360 minutes).
Change from baseline in plasma denser triglyceride concentrations
Plasma denser triglyceride concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline) and during the exposure (i.e., 0 or baseline, 30, 60, 90,120, 180, 240, 300, and 360 minutes).
Change from baseline in plasma non-esterified fatty acid concentrations
Plasma non-esterified fatty acid concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline) and during the exposure (i.e., 0 or baseline, 30, 60, 90,120, 180, 240, 300, and 360 minutes).
Secondary outcomes
Baseline serum β-estradiol concentrations
Serum β-estradiol concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline)
Baseline serum progesterone concentrations
Serum progesterone concentrations will be measured via colorimetric assays from venous blood samples collected upon arrival at the laboratory (baseline)
Fasting resting energy expenditure
Fasting resting energy expenditure will be measured via indirect calorimetry upon arrival at the laboratory (baseline).
Change from baseline in respiratory exchange ratio
Respiratory exchange ratio will be measured via indirect calorimetry upon arrival at the laboratory (baseline), and hourly for 6 hours following meal consumption.
Sponsors and contacts
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University of Ottawa
Lead sponsor
Natural Sciences and Engineering Research Council, Canada
Collaborator
Hopital Montfort
Collaborator
Institut du Savoir Montfort
Collaborator