A support apparatus (10) for use in supporting a person, particularly a bariatric patient. The apparatus (10) is selectively convertible between a seat configuration for supporting the person in a substantially seated position and a table configuration for supporting the person in a substantially prostrate position. The apparatus (10) is both vertically and angularly adjustable in either configuration. The apparatus (10) includes enhanced lateral support provided by telescoping support cylinders (74,76), and substantially automatically retracting foot support portions (50).