Author contribution: R.A. Boichenko — literature review, data collection, data analysis, text authoring, determination of gait comparison parameters, statistical data processing; S.V. Gornov — study design development, editing and approval of the final version of the article.

Compliance with ethical standards: the study was approved by the Ethics Committee of the Federal Research and Clinical Center for Sports Medicine and Rehabilitation of the Federal Medical Biological Agency (Minutes of Meeting #01-09 of September 15, 2018). All athletes signed a voluntary consent to participate in the study.