US Patent 9700751 Apparatus and method for muscle movement training

Apparatuses and methods for motion and muscle training are disclosed. An apparatus includes a first retractor device, a second retractor device and a body gear unit for engaging a human. The body gear unit is attached to the first retractor device and the second retractor device. The first retractor device and the second retractor device each provide a constant non-variable load and constant resistance in opposite directions. A method includes attaching a body gear unit to a body, attaching first and second retractor devices to the body gear unit, and performing at least one movement using the body gear unit. The at least one movement is performed in a direction that is opposite to a direction of resistance of the first retractor device. A direction of resistance of the second retractor device is opposite to the direction of resistance of the first retractor device.