A handle assembly adapted to grasp a bar for exercise includes a J-shaped hook for placement on the bar, a rotation assembly, and a handle attached to the rotation assembly. The handle has an inverted U-shaped bracket with a cross piece defining a grip that is connected between ends of the U-bracket. The rotation assembly is connected between a lower end of the hook and the U-shaped bracket and includes a bearing, the handle being rotatable via the bearing by a user during exercise with the J-hook on the bar.