If you go see a doctor or physical therapist for back pain and they tell you to do this, RUN THE OTHER DIRECTION AS FAST AS YOU CAN. Well, if you’ve had a stroke, WALK THE OTHER DIRECTION AS FAST AS YOU CAN. These are called Williams’ Flexion Exercises and they should be outlawed. My PCP has a form for back pain with these exercises in his treatment rooms and it makes me crazy, but no one thinks I know anything when I speak so I keep my mouth shut. Back pain frequently is going to respond to a certain direction, sometimes that is flexion as in these exercises but much more often it’s extension(bending backwards). It’s called directional preference. If your doctor hands you a generic form with exercises like this on it without thoroughly evaluating you and seeing how your pain responds to movement and direction, go elsewhere. Disclaimer: I had a stroke and my brain is all f’ed up, don’t listen to me.