Abstract: A push-up exercise unit and device is described which may enable a user to move with his/her body's natural rotation to engage additional muscle groups with reduced stress on joints. The device can include a handle support structure having a pair of columns between a lower base and a separate end cap such that the handle intersects a corresponding end cap and upper portion of a corresponding column of the handle support structure. The device includes a fixed base support attached to the handle support structure, and a bearing assembly to permit rotation of the contiguous handle, end caps and handle support structure by a user with the base support resting on a planar surface. In another example, the handle assembly is detachable from a first surface on the handle support structure and inserted into a second surface to facilitate stowage for travel.

Abstract: A stability adjustable unit for a seat of an exercise device that is configured for movement on the device may include a sub-assembly connected between the seat and a roller assembly of the device on which the seat rests. The unit may include a selector provided on the sub-assembly and operable by a user seated on the seat to vary a degree of stability of the seat.