Testosterone and Neural Function

Details

- Participants will receive a single dose of testosterone using a nasal gel - On a separate visit, their will receive a placebo gel. - The order of treatments will be blinded to the participant. - Final testing of motor and cardiovascular function will be assessed after 30 minutes - Testing of motor function will be assessed using transcranial magnetic stimulation (TMS). TMS is a non-invasive technique which uses a magnetic field to stimulate the brain. A coil (held over the head) delivers the magnetic stimulation that activates the central nervous system. Activation of muscles through TMS will be assessed using surface electrodes on the skin of the hands. - Cardiovascular function will be assessed using a cold face challenge.