Understanding changes in corticospinal excitability due to chronic resistance training and fatigue

The proposed research will allow us to determine how the human central nervous system (i.e. brain and spinal cord) functions to produce different intensities of muscle contractions with and without fatigue. We will use a variety of stimulation technics to determine how active the brain and spinal cord are during the arm contractions. We do not currently have a detailed understanding of how the brain and spinal work together during force production.