Overview A Study to Evaluate the Effect of Testosterone on Muscle Fractional Synthetic Rate (MK-0000-064) Status: Completed Trial end date: 2008-12-01 Target enrollment: Participant gender: Summary This is a study to evaluate the use of fractional synthetic rate as an early biomarker of muscle anabolism (muscle build-up). Phase: Phase 1 Details Lead Sponsor: Merck Sharp & Dohme Corp.Treatments: MethyltestosteroneTestosteroneTestosterone 17 beta-cypionateTestosterone enanthateTestosterone undecanoate