Abstract: A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.

Abstract: A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.

Abstract: The exercise devices disclosed herein are configurable to allow a user to perform various exercises. The exercise device can include an adjustable bench assembly connected with a frame supporting a cable-pulley assembly providing a user interface with a resistance system. A user can interface with an actuation component to pull resistance cables against resistance from the resistance system. Various exercise accessories can be provided that are easily connected with and removed from the exercise device to allow a user to perform different exercises. Some examples of exercise accessories are used to configure the exercise device for squat, abdominal, leg extension, leg curl, and arm curl exercises. The frame can also be configured to selectively place the exercise device in a stationary operating configuration supported by the frame on a support surface and a storage configuration wherein the exercise device is rollingly supported on the support surface by wheels.

Abstract: An exercise apparatus comprises a frame defining a front portion and at least one front wheel operably coupled with the front portion of the frame. The exercise apparatus also comprises an elevation support frame defining a front portion and a rear portion. The front portion is pivotally supported at the front portion of the frame and the rear portion operably supports at least one rear wheel. The exercise apparatus further comprises a motor coupled with the elevation support frame, the motor adapted to pivot the elevation support frame and extend the at least one rear wheel away from the frame.