1 Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
2 Department of Sports Medicine & Biology of Physical Activity, Faculty of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece.
3 Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece. Electronic address: mkoutsil@med.uoa.gr.