Back pain exercises
http://www.med.umich.edu/1libr/pa/pa_xlbpm_art.htm
http://orthoinfo.aaos.org/topic.cfm?topic=A00302

Exercises For Persons 60 Years and Older
http://orthoinfo.aaos.org/topic.cfm?topic=A00237
explore the whole site for more info

Slide show: Core exercises with a fitness ball
http://www.mayoclinic.com/health/cor...M00046&slide=1
{click the numbers or the next to see each exercise}

Exercise Ball workouts
[Is it any surprise that the use of exercise balls has exploded over the last few years?
Personally, I can't think of a better way to lose weight and get in shape than with an exercise ball workout.
That's why I created ExerciseBallWorkouts.net.
No, I'm not a fitness instructor, or a personal trainer, or any other kind of health professional. I was simply attracted to those big, bright-colored balls and thought to myself, "That looks fun. Why not give it a try?"
So that's what I did. And here I am today, devoting an entire website (and many hours of my life!) to a fitness technique that I just can't get enough of.

Please have a look around! There are plenty of free workout plans and ball exercises, plus fitness articles and exercise balls & gear. If you've never tried using an exercise ball before, you should begin with exercise ball basics..]
http://www.exerciseballworkouts.net/