Abstract: First and second rigid bars may be connected together by a support to form an elongated bar assembly having a longitudinal axis. A pair of hand grips are spaced from one another, and each hand grip includes a mounting portion which is freely pivotally supported on a bar for pivotal movement about pivot axis extending substantially perpendicular to the longitudinal axis of the bar assembly. A hand grip portion is supported on the mounting portion for swivel movement through 360 degrees about an axis of rotation disposed substantially perpendicular to and passing through the pivot axis at the point where the mounting portion is pivotally supported by the bar assembly. The swivel connection can be locked to prevent swiveling of the hand grip portion.