Abstract: An exercise device may include one or more leg assemblies operatively joined to a user engagement component. The leg assemblies may position the user engagement component at an initial or rest position, which may be a predetermined distance above a support surface. The leg assemblies may be configured to allow a user to move the user engagement towards the support surface from the initial or rest position. The exercise device may further include one or more biasing or resistance components that are joined to at least one leg assembly and that resist movement of the user engagement component towards the support surface. The biasing or resistance components may further be configured to return the engagement component to its initial or rest position.

Abstract: An exercise device may include a main body defining an arch-shaped structure, at least one movable support mechanism coupled to the main body and configured to support the exercise device on a support surface, and at least one gripping mechanism coupled to the main body. The main body may be formed from a shape retaining material. The exercise device may further include a biasing mechanism coupled to the main body. The at least one movable support mechanism may include wheels coupled to the main body. The at least one gripping mechanism may include a handle or a recess or an elongated slot formed in the main body. The main body may further include apertures for joining the handle to the main body at various positions.

Abstract: An exercise device can include a frame, first and second treadle assemblies, and a one-way drive system. Each treadle assembly can include a deck and tread belt rotatably coupled to the deck. The treadle assemblies can be pivotably mounted to the frame. Downward movement of the two treadle assemblies can cause the tread belts associated with the treadle assemblies to rotate relative to their decks.

Abstract: An exercise device can include a frame, first and second treadle assemblies, and a one-way drive system. Each treadle assembly can include a deck and tread belt rotatably coupled to the deck. The treadle assemblies can be pivotably mounted to the frame. Downward movement of the two treadle assemblies can cause the tread belts associated with the treadle assemblies to rotate relative to their decks.