Sam Houston State University
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.
The physiologic effects of the female menstrual cycle have been shown to cause many changes to metabolic processes throughout the body depending on the phase of the cycle. For example, during the follicular phase, increase in estrogen aids in arterial vasodilation, lipid metabolism, neuroprotection, and maintaining bone density (Gruber et al. 2002). During the luteal phase, the increase in progesterone aids in thermoregulation, increased respiration, and basal insulin levels (Taraborrelli 2015). However, there is conflicting evidence regarding net progesterone effects on skeletal muscle. Some…
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, t…
Protein supplementation during progesterone peak to stop protein degradation effect.
Will receive placebo supplementation
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