Progesterone and Muscle Protein Synthesis in Premenopausal Women (MP4-MPS)

Two doses of 400 mg total micronized progesterone, administered as 2 × 200 mg capsules \~34 hours and \~10 hours prior to infusion trial, taken with a standardized nutritional drink.

Matched oral placebo capsules administered on the same schedule (\~34 and \~10 hours prior to infusion trial) with a standardized nutritional drink.