1. Department of Physical Education and Sports Science at Serres, Aristotle University of Thessaloniki, Serres, Greece
2. Intensive Care Unit, 424 General Military Hospital of Thessaloniki, Thessaloniki, Greece
3. Department of Health Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
4. School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece