Testosterone and Lipolysis, Insulin Sensitivity and Protein Metabolism

"The trial is a double blinded, randomised cross-over study of 4 x 2 days with an interval of 1 month in between. 12 healthy young male participants will receive the GnRH-agonist leuprorelide 7,5 mg s.c. 3 weeks before examination on 3 occasions, and a fourth day without intervention.~The four days will include treatment on the examination day, Day 1 with:~1. Placebo (hypogonadism after leuprorelide injection)~2. Testosterone gel 50 mg applicated in the morning at 06.00 am (physiologic substitution - after leuprorelide injection).~3. Testosterone gel 150 mg applicated in the morning at 06.00 am (supra-physiologic substitution - after leuprorelide injection).~4. No treatment."