Lie down on your back with a medium-size Swiss ball below your ankles. Your knees are 90 degrees. Push the ball away and toward you, back to the starting position. Do five sets of ten repetitions.
Reverse Leg Curl:
Do the above with your hips not touching the floor for the whole motion.
Disclaimer: None of the above information can be taken as a substitute for advice from a medical professional such as a physician.
My third book, Pocket Guide to Fitness, is available on www.louizapatsis.com, http://www.authorhouse.com, www.bn.com and http://www.amazon.com. If you look up my name on those Web sites, you will find my other books The Boy in a Wheelchair and Life, Work and Play: Poems and Short Stories.