A convertible harness includes a waist strap, shoulder straps, and a stowable pelvis enclosing assembly. The exercise bench includes a supporting frame and a back support member and a seat support member attached to the frame. Related apparatus and methods are also described. This allows the perfect alignment and fit of the outside covers with the inside pages. A control electronic system controls the electric motors in dependence on a signal from the sensors, so that the step bodies run directly one after the other in a person transport region. Repeating sequences of commands and data packets are provided to the memory device.