I agree with the other posters - for most people, weight loss is 80% weight loss, and just 20% exercise.
If you watch your intake, then you can lose weight without exercise at all. But adding some exercise in is definitely the healthier way to do it, and exercise can contribute significantly to your overall calorie deficit.
Certainly the lower body muscles (quads, glutes, etc) are the largest and strongest in the body, and burn the most calories. You're probably not going to build huge calorie totals (eg. 600-800 per workout) without using the lower body, but certainly you can burn 100-300 per workout with seated exercises, which can add up to material weight loss if you do them regularly.
Take a look at Spark's Limited Mobility Lifestyle Center for some ideas of different workouts you can do. www.sparkpeople.com/resource/lifestyle_cen
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0