integring angles that allow whlchair athletes to perform high impac exercises. >> i can really getnto anything wre i can do good press. a couple of these machines help with that. >> it needs to be a little rther out. give me a longer range. >> reporter: adrien was an engineer with the company that's builng the prototypes. >> it provides a better challenge to really do something well for these guys, men and women. knowing the outcome is for life function, i do want to do a good job. >> rorter: he says t daunting challenge came from younger veterans li sergeant philip who missed one form of exercise more than any other. >> i was a big runner and since then,i haven't been able to work on my cardiomuscl. >> reporter: a wheehair treadmill was part of the solution. >> i can build up a sweat. >> reporter: but they designed weight machines with high speed motiono produce aerobic workouts: they believe the outdoor location is providing psychological befits. this is the director of occupational healt >> i was really inspired to learn that compont of the athlic self and the mental health self. t