I've had scoliosis (spinal curvature) since I was 10 years old. I went to a physical therapist to learn exercises to strengthen my abdominal muscles. I usually did these while laying down, with knees flexed or straight. These can be modified to do when sitting in a chair. Just pull in your buttocks and stomach, and push your back into the floor or the back of the chair. Hold this for a few seconds and relax. Repeat this (I did mine 20 reps). Hope this will help out! Trish