The Paralympics seems to define itself as representing the below species-typical, impaired people and the Olympics are the species-typical although on the upper end of the bell curve (see my blog To define oneself as less able). In this the Paralympics follows the prevailing meaning of health which is benchmarked to the normal or species-typical body. We expect certain abilities in members of a species; we expect humans to walk but not to fly, but a bird we expect to fly. If the bird cannot fly, we perceive it as impaired and if humans cannot walk, we perceive them as impaired. It also follows an understanding of ableism that perceives species-typical body abilities as a norm.