Table tennis is a helpful activity for people with Alzheimer's - Maybe stroke?

Would this be helpful for stroke survivors? A very simple question that our stroke associations should easily be able to answer. It would seem to be an excellent physical therapy intervention for balance and proprioception.
http://www.alzheimersweekly.com/2015/09/ping-pong-alzheimers.html
 VIDEO:

Table tennis is a helpful activity for people with Alzheimer's. See how it combines physical activity with brain exercise, spatial skills and staying social.

Playing table tennis to enhance mental health

This would be so cheap to install in the hospital recreation room and much cheaper than a pool table. Think of all the benefits of requiring you to balance as you lunge after the balls. But something as smart and easy as this will never ever get into your hospital therapy department, because they will never do anything outside the bun.
http://sharpbrains.com/blog/2014/08/27/trend-playing-table-tennis-to-enhance-brain-fitness-and-mental-health/
If this guy can play ping pong then anyone can.
Armless Table Tennis Player Takes on the Sport's Best Players