The problem is not year-round participation in sports; the problems are specific to the sports themselves. Swimming year-round is very common and the only t

The problem is not year-round participation in sports; the problems are specific to the sports themselves. Swimming year-round is very common and the only thing likely to get harmed is the health of your hair. That's because swimming is a low impact holistic exercise (at least for the majority, who are swimming at a state level at best); basketball on the other hand is high impact and is going to inherently have more of these problems, particularly without recuperation periods. Even if a swimmer overspecializes and overtrains without break for years, they are unlikely to cripple themselves because the sport simply isn't dangerous in that way.