That would push some down into the feet but also accelerate some up to the head. In addition that's a lot of space in a pretty cramped area. Then you have to mo

That would push some down into the feet but also accelerate some up to the head. In addition that's a lot of space in a pretty cramped area. Then you have to mount it so it doesn't induce vibrations on the space craft which is an issue they already fight with the existing exercise equipment. On top of all of that you're creating pretty sizable gyroscopes that you need to spin up and down requiring a counter force from somewhere.