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Protein Supplementation During Luteal Phase to Stop Protein Degradation

Protein Supplementation During Luteal Phase

Who can join

Ages 18 to 35 · Women · Healthy volunteers welcome

Inclusion Criteria:

* Eumenorrheic
* 18 to 35 years old

Exclusion Criteria:

* 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.
* Non-tobacco user
* Gasterointestinal disorders, liver disease, infectious disease, cardiovascular, pulmonary, renal, immune, metabolic, cancer
* Medications: corticosteroids, chronic NSAIDS, high strength acne, testosterone
* Diagonsed PCOS, endometrosis, ovarian insufficency, or other menstrual cycle disorder.

About the study

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.

What is being tested

• protein supplement (dietary supplement)
• Placebo (dietary supplement)

Sponsor: Sam Houston State University · Participants: 34 · Started: Aug 4, 2026

Contact the study team

• Kyndal Kutac · Phone: 979-743-1135

Official record on ClinicalTrials.gov — NCT07843095

Locations in the U.S.

Conditions

• Muscular Atrophy

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.