Here is an interesting statistic: 25.6% of persons with a disability reported being physically inactive during a usual week compared with 12.8% of those without a disability.
Being in a wheelchair should not be a barrier to activity.
First, there are some excellent wheelchair exercises. These Wheelchair Exercises include wheelchair aerobics, wheelchair weight lifting and excercise equipment designed specifically for wheelchair users.
Second, there are a great number of wheelchair sports as can be seen from these wheelchair sports videos. Or check out this site for some ideas of wheelchair sports.
If you dont like the idea of wheelchair excercise or an organized wheelchair sport, why not create your own wheelchair sport like Aaron Fotheringham did?