| http://www.w3.org/ns/prov#value | - ation. [0015] A second method includes the steps of: contacting the back of a person to be strengthened to an apparatus including a pad, signal means for producing a signal, and detection means for determining a weight applied to the pad and activating the signal means when the weight exceeds a predetermined weight; compressing the lumbar region of the person to be strengthened to contact the dete
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