A bodyweight unloading locomotive device includes a frame mounted on wheels for locomotive movement. The frame has opposed left and right sides and a harness for supporting a user between the left and right sides. An unloading assembly is carried on each of the left and right sides, wherein the unloading assemblies each includes a sprung arm having a fixed end fixed to the respective left and right side, and an opposed free end. The assemblies further each include a cam assembly mounted on the free end of the sprung arm and a tether routed through the cam assembly and extending to the harness. Each of the unloading assemblies exerts an independent unloading force on the harness with respect to the frame.