Department of Applied Physiology, Ulm University, Albert-Einstein-Allee 11, D-89069 Ulm, Germany.|Department of Applied Physiology, Ulm University, Albert-Einstein-Allee 11, D-89069 Ulm, Germany.|Department of Applied Physiology, Ulm University, Albert-Einstein-Allee 11, D-89069 Ulm, Germany.