About the Authors

Małgorzata Domagalska-Szopa

mdomagalska@sum.edu.pl

Affiliation Institute of Medical Rehabilitation, Department of Physiotherapy, School of Health Sciences, Medical University of Silesia, Katowice, Poland

Andrzej Szopa

Affiliation Institute of Physiotherapy, Department of Physiotherapy, School of Health Sciences, Medical University of Silesia, Katowice, Poland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MDS AS. Performed the experiments: MDS AS. Analyzed the data: MDS AS. Contributed reagents/materials/analysis tools: MDS AS. Contributed to the writing of the manuscript: MDS AS. ICMJE criteria for authorship read and met: MDS AS. Agree with manuscript results and conclusions: MDS AS.