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Method for determining muscle endurance and sensitivity to fatigue

  • US 5,361,775 A
  • Filed: 04/06/1993
  • Issued: 11/08/1994
  • Est. Priority Date: 04/06/1993
  • Status: Expired due to Term
First Claim
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1. A method for a determination of endurance and sensitivity to fatigue of a muscle comprising:

  • attaching a grounded recording electrode directly on a skin surface on top of said muscle;

    connecting a recording amplifier to said grounded recording electrode;

    measuring action potentials of muscle cell membranes of said muscle with said recording electrode;

    recording said action potential measurements as EMG data in a memory;

    transferring said EMG data through an optical data means to a computation means for analysis and normalization;

    performing an FFT frequency analysis on said transferred EMG data using three or more calculation parameters for determining a reduction in said conduction rate of said muscle cell membranes;

    obtaining a rate of change value of said calculation parameters as a function of time thereby indicating an amount of said endurance and sensitivity to fatigue of a muscle;

    comparing said rate of change value with a normalized index; and

    presenting a result of said comparison graphically.

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