effects of resistance training

How can you simulate pro gravity by using a centrifuge?

I heard that currently we cannot change gravity but by using a centrifuge we can simulate the effect by speeding it up. I was wondering, let’s say I wanted to explore this method inside of a small room, the main purpose is here is for resistance training, what would be required to make this possible to do?, what would the configurments of the room be and how exactly does the centrifuge come into practice to make it seem as though that the gravity in that area has increased. Be as thorough as you can. thank you.

NASA has done this for decades. Google it.