Method and apparatus for adaptive closed loop electrical stimulation of muscles
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United States of America Patent
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Jun 13, 1989
Grant Date -
N/A
app pub date -
Aug 19, 1987
filing date -
Aug 19, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for strengthening skeletal muscles through maximizing muscle tension in which electrical stimulation signals are applied to the selected muscles at a predetermined frequency, pulse width, and amplitude, and work output by the muscles in response to stimulation signals is determined over a fixed period of time. The work output is compared to a defined value which can be a target value or a value measured during a previous stimulation period. The amount of electrical energy coupled into the muscles by the stimulation signals is varied in response to the results of the comparison in order to maximize the amount of work output by the muscles during a treatment period. This is accomplished by adjusting the frequency or pulse width during stimulation treatment in response to the work output measured.
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