Athletic postures

I am wondering where you stand on this one. Following on from the previous post on posture, there are a whole heap of athletic postures that would be classified far from “ideal”.  These postural derivations observed in athletes, however, appear to be advantageous to the production and application of force for their sport. For example, tibial torsion and hyper extended knees for swimming, lordosis for field and track sports requiring speed, etc.

So, a question for you, would you purposefully change the ideal posture suited for long term health, to an ideal posture that advantages a certain sport? Is it a case of short-term gain, for long term pain?