A subject support apparatus includes an upper portion including a torso panel having a first end and a second end, a loop strap having a first free end extending from the first end of the torso panel and a second free end extending from the second end of the torso panel and configured to couple the first end of the torso panel to the second end of the torso panel to form a closed loop, and a pair of shoulder straps coupled to the torso panel and extending from a top edge of the torso panel. The subject support apparatus also includes a lower portion coupled to the pair of shoulder straps and extending from a bottom edge of the torso panel. The lower portion has a seat piece having a front end and a rear end.