Why is it so important to continue strength training during the season? I’ll give you 2 good reasons: Improved performances and reduced injury risk.
If you think about it, the less you get injured, the more you can train. The more you train (smartly) the better you perform. Especially in team sports, the less players that are out injured, the stronger the team. When the coach has the full squad to choose from, especially the best players available, the more likely you get the results.
Now I’m not casting aspersions on any childhood songs in particular, but we have a tendency to imagine the body in movement as a rigid frame being pulled on by distinct muscles to produce specific joint actions. eg: the hamstrings pull on the shin bones to produce knee flexion. While this is not technically incorrect, are we sure this is the best way to view and address human movement?
If we were talking about robots, then I think it would be a fine. In that case, treating any pain or dysfunction would be more a case of finding the part that wasn’t working and fixing the hydraulics at that joint.