Lateral tilting treadmill systems

A lateral tilting system comprising one or more crossbeams that are each pivotably supported by a respective base member for pivotable motion about a common longitudinal axis. A drive mechanism is operably connected to a drive shaft to mechanically drive pivotable motion of the crossbeams about the axis, and resulting lateral tilt of an associated treadmill deck. A control system may be included to receive a user's input for controlling an oscillation rate or other parameter of the lateral tilting, and optionally longitudinal incline of the treadmill deck. A novel treadmill including a lateral tilting system and a lateral tilting accessory for conventional exercise equipment are provided also.