I listened to an informative 30 minute discussion with Dr. Mary Massery about the amazing large thin parachute shaped muscle called the diaphragm and some of the important things it does if it's working properly: stabilizes posture, regulates chest cavity pressure, and facilitates breathing. I had no idea about the first two; but since my left diaphragm is paralyzed and not working, I now understand some odd and seemingly unrelated symptoms I'm experiencing can be attributed to that. Shortness of breath and breathing problems are no brainers. Dr. Massery explained that two issues arise when a malfunctioning diaphragm isn't able to regulate chest cavity pressure. Pressure escapes, resulting in chest pain at the top of the chest cavity and incontinence at the lower end. She also explained that the loss of structural support from a diaphragm that isn't working properly results in loss of balance and fear of falling. These are three things I've been dealing with that I never connected with my left PD but attributed to old age and other things. She has a website and may have some videos on YouTube. I'm seeking physical therapy for posture restoration, balance, and incontinence which should be helpful...