“…The COVID-19 outbreak forced governments to introduce severe restrictions and limitations that have negatively influenced many areas of the economy, including the sports sector [ 9 , 10 , 11 ], and brought about obstacles to outdoor physical activity [ 12 , 13 ]. As long-lasting lower physical activity is harmful to health and physical fitness, some researchers provide recommendations to exercise at home to maintain, at least in part, the previous level of physical capacity [ 14 , 15 ]. However, habitual lifestyles of athletes involve group training sessions, participation in training camps and competitions, which usually enhance their interpersonal relations.…”