1. Research and Development Centre of Electrical Machines “Komel”, 188 Rozdzienskiego St., 40-203 Katowice, Poland
2. Department of Internal Medicine, Angiology and Physical Medicine in Bytom, School of Medicine with Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, 15 Batorego St., 41-902 Bytom, Poland
3. Department of Food and Nutrition in Sosnowiec, Medical University of Silesia in Katowice, 8 Jednosci St., 41-200 Sosnowiec, Poland
4. Department of Physical Medicine, Chair of Physiotherapy, School of Health Sciences, Medical University of Silesia, Medykow 12 St., 40-752 Katowice, Poland