About this trial
The purpose of this research is to determine if increasing 12% of daily protein intake during the luteal phase mitigates the potential catabolic effects of progesterone on skeletal muscle. We anticipate there will be an advantageous, decreased catabolic effect with increasing protein intake during the luteal phase.
By doing this study, we hope to learn if millions of women would benefit from additional protein supplementation during the luteal phase, which may lead to decreased skeletal muscle atrophy over time. Your participation in this research will last about 4 months.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Eumenorrheic
18 to 35 years old
Disqualifiers
Pregnant or lactating (These individuals will not have a regular menstrual cycle) in the previous six months
Vegetarian (protein supplementation is from animal origin)
Contraceptive use, any hormone based contraceptive use for 6 months prior to enrollment
Use of illicit drugs in previous 6 months.
Trial design
Crossover
Treatments tested in this trial
protein supplement
Dietary supplementProtein supplementation during progesterone peak to stop protein degradation effect.
Placebo
Dietary supplementWill receive placebo supplementation
Treatment groups
Trial outcomes
Primary outcomes
Skeletal Muscle Protein Degradation
Primary outcomes will be changes in urinary N-fragment of titin and serum 3-methylhistidine between supplementation and placebo conditions. Paired t-tests or linear mixed-effects models will be used to account for within-subject crossover effects. Hormone levels will be included as covariates. Statistical significance will be set at p \< 0.05.
Secondary outcomes
Decrease protein degradation
We would like to home in on protein intake and degradation to quantify the amount of protein loss seen during the luteal phase, the point at which protein degradation is deemed to be the highest. Our specific aims for this project will be to 1) quantify protein degradation at the time of the luteal phase and 2) determine whether targeted protein supplementation during the luteal phase will reduce measured protein degradation. We anticipate there will be an advantageous, decreased catabolic effect with increasing protein intake during the luteal phase. To measure this, we will use Blood and Urine samples during the menstrual cycle. Blood Samples: Blood will be collected in serum separator tubes (SST) Serum will be analyzed using enzyme-linked immunosorbent assay (ELISA) methods to measure: 3-Methylhistidine Progesterone Urine Samples: Urine samples will be analyzed using ELISA methods to measure: N-fragment of Titin Creatin
Sponsors and contacts
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