Apparatus for supporting a user in a selected position includes a tiltable frame assembly, a body support supported thereon, and a foot support extending transversely across the foot end of the body support. Either the foot support or the body support is movable relative to the other such that: (a) in the horizontal position of the apparatus the foot support is spaced away from the foot end of the body support and from the bottom surfaces of the users feet supported thereon, and (b) when the tiltable frame assembly is tilted towards the vertical position, either the foot support or the body support moves relative to the other in the direction to cause the foot support to engage the bottom surfaces of both feet of the user to prevent siding of the user on the body support and thereby to facilitate exiting of the user from the apparatus.