Method and apparatus for detecting muscle fatigue
First Claim
1. A method for detecting muscle fatigue comprising the steps of:
- (a) transforming the muscular strength of a muscle of a subject being examined into an electric muscular strength signal;
(b) adjusting the muscular strength signal by a weight-muscular strength coefficient to provide an adjusted muscular strength signal;
(c) detecting a myoelectric discharge from the muscle being examined to form an electromyogrammatic signal;
(d) respectively integrating said electromyogrammatic signal and said adjusted muscular strength signal; and
(e) determining the ratio between the integrated electromyogrammatic signal and the integrated adjusted muscular strength signal.
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Accused Products
Abstract
A method of and an apparatus for estimating the degrees of the fatigue and pain of muscles and comparing subjects of different weights on the same basis by deriving the variation in the muscular strength such as the dorsal muscular strength, shoulder muscular strength, the grasping power, and the like as an electric signal and integrating the muscular output on one hand, providing an integrated value of the electromyogrammatic amplitude by processing the voltage induced from the muscle to be tested through an electromyogram amplitude and a waveform processor, and by digitally displaying the ratio between these integrated values after correcting the ratio with a weight/muscular strength coefficient.
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Citations
31 Claims
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1. A method for detecting muscle fatigue comprising the steps of:
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(a) transforming the muscular strength of a muscle of a subject being examined into an electric muscular strength signal; (b) adjusting the muscular strength signal by a weight-muscular strength coefficient to provide an adjusted muscular strength signal; (c) detecting a myoelectric discharge from the muscle being examined to form an electromyogrammatic signal; (d) respectively integrating said electromyogrammatic signal and said adjusted muscular strength signal; and (e) determining the ratio between the integrated electromyogrammatic signal and the integrated adjusted muscular strength signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for detecting muscle fatigue comprising:
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(a) means including a transducer for transforming the muscular strength of a muscle of a subject being examined into an electric muscular strength signal; (b) means for adjusting the muscular strength signal by a weight-muscular strength coefficient to provide an adjusted muscular strength signal; (c) means for detecting a myoelectric discharge from the muscle being examined to form an electromyogrammatic signal; (d) means for integrating said adjusted muscular strength signal; (e) means for integrating said electromyogrammatic signal; and (f) means for determining the ratio between the integrated electromyogrammatic signal and the integrated adjusted muscular strength signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for detecting muscle fatigue comprising the steps of:
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(a) transforming the muscular strength of a muscle of a subject being examined into an electric muscular strength signal; (b) detecting a myoelectric discharge from the muscle being examined to form an electromyogrammatic signal; (c) respectively integrating said electromyogrammatic signal and said muscular strength signal; and (d) determining the ratio between the integrated electromyogrammatic signal and the integrated muscular strength signal. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An apparatus for detecting muscle fatigue comprising:
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(a) means for transforming the muscular strength of a muscle of a subject being examined into an electric muscular strength signal; (b) means for detecting a myoelectric discharge from the muscle being examined to form an electromyogrammatic signal; (c) first integrator means for integrating said electromyogrammatic signal; (d) second integrator means for integrating said muscular strength signal; and (e) means for determining the ratio between the integrated electromyogrammatic signal and the integrated muscular strength signal. - View Dependent Claims (28, 29, 30, 31)
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Specification