When it comes to prevention, stem cell therapy is not usually used as a means to prevent injuries without damage. In the article https://ways2well.com/blog/stem-cell-therapy-for-ice-skating-and-hockey-injuries-in-sports, it is described specifically as a method for recovery from injuries, such as sprains or blows, typical for hockey and figure skating. Proper warm-up, muscle strengthening, adequate rest, and proper technique are more effective in reducing the risk of injury. If an injury has already occurred, then treatment options can be discussed with a doctor, including regenerative approaches, but stem cells are not usually used for "preventive" purposes.