| http://www.w3.org/ns/prov#value | - In an alternative embodiment, manual or automatic gearing and/or cam mechanisms, similar to a gear on a bicycle, is used instead of programmable microprocessor based control unit to adjust the pattern and level of forces (moments and torque) generated by the passive elements so as to provide the desired level of assist and match it to the changing pattern of walking or running, such as moving up o
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