A standing exercise device includes a base, a foot pedal assembly mounted to the base, a first member pivotally coupled to the foot pedal assembly, a second member extending upwardly from the first member, a hand pedal assembly mounted to the second member, a third member coupled to the foot pedal assembly and the hand pedal assembly, and an interlocking hinge pivotally connecting the first and second members. The interlocking hinge is movable relative to the foot pedal assembly to vertically adjust a position of the hand pedal assembly. The first, second, and third members together form an adjustable frame defining a space configured to receive and support a user in a standing position with the user's hands and feet respectively engaging and manually driving a pair of hand pedals and a pair of foot pedals in synchronous circular motion.