Device for measuring muscle signals
First Claim
1. A system for guiding a user in an exercise, the system comprising at least one processor, memory including computer program code, and at least one sensor configured to detect a signal from a muscle of the user, the memory and the computer program code configured to, with the at least one processor, cause the system to perform at least the following:
- measure the signal from the muscle provided by the sensor to obtain a muscle activation signal during at least one contraction of said muscle;
convert said muscle activation signal from the time domain to the frequency domain to obtain a muscle activation spectrum;
determine a first band and a second band from the muscle activation spectrum measured during a maximum voluntary contraction of the muscle;
determine first reference power values for said first band and said second band from the muscle activation spectrum that is measured during the maximum voluntary contraction;
use said first reference power values in determining a ratio of signal characteristics from said first band and said second band of said muscle activation spectrum;
determine a muscle state indicator from said muscle activation spectrum by using said ratio of signal characteristics from the first band and the second band of said muscle activation spectrum; and
guide the exercise using the determined muscle state indicator.
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Accused Products
Abstract
A device or a system for measuring muscle signals. A system may include at least one processor, memory including computer program code, the memory and the computer program code configured to, with the at least one processor, cause the system to perform at least the following: measure a signal from a muscle to obtain a muscle activation signal; carry out at least one transform on the muscle activation signal to obtain a muscle activation spectrum; and determine a muscle state indicator from the muscle activation spectrum by using signal characteristics from a first and a second band of the muscle activation spectrum.
8 Citations
19 Claims
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1. A system for guiding a user in an exercise, the system comprising at least one processor, memory including computer program code, and at least one sensor configured to detect a signal from a muscle of the user, the memory and the computer program code configured to, with the at least one processor, cause the system to perform at least the following:
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measure the signal from the muscle provided by the sensor to obtain a muscle activation signal during at least one contraction of said muscle; convert said muscle activation signal from the time domain to the frequency domain to obtain a muscle activation spectrum; determine a first band and a second band from the muscle activation spectrum measured during a maximum voluntary contraction of the muscle; determine first reference power values for said first band and said second band from the muscle activation spectrum that is measured during the maximum voluntary contraction; use said first reference power values in determining a ratio of signal characteristics from said first band and said second band of said muscle activation spectrum; determine a muscle state indicator from said muscle activation spectrum by using said ratio of signal characteristics from the first band and the second band of said muscle activation spectrum; and guide the exercise using the determined muscle state indicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A computer program product embodied on a non-transitory computer readable medium, comprising computer program code configured to, when executed on at least one processor, cause an apparatus or a system to:
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measure a signal from a muscle to obtain a muscle activation signal during at least one contraction of said muscle; convert said muscle activation signal from the time domain to the frequency domain to obtain a muscle activation spectrum; determine a first band and a second band from the muscle activation spectrum measured during a maximum voluntary contraction of the muscle; determine first reference power values for said first band and said second band from the muscle activation spectrum that is measured during the maximum voluntary contraction; use said first reference power values in determining a ratio of signal characteristics from said first band and said second band of said muscle activation spectrum; determine a muscle state indicator from said muscle activation spectrum by using said ratio of signal characteristics from the first band and the second band of said muscle activation spectrum; and guide the exercise using the determined muscle state indicator.
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19. A method for determining a state of a muscle of a user and guiding the user in an exercise based on the determined state, the method comprising using a device that includes at least one processor, a memory including computer program code, and at least one sensor configured to detect a signal from the muscle, wherein execution of the computer program code by the processor is configured to cause the device to:
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measure the signal from the muscle detected by the sensor using the processor to obtain a muscle activation signal during at least one contraction of said muscle; convert said muscle activation signal from the time domain to the frequency domain to obtain a muscle activation spectrum; determine a first band and a second band from the muscle activation spectrum measured during a maximum voluntary contraction of the muscle; determine first reference power values for a first band and a second band from the muscle activation spectrum that is measured during a maximum voluntary contraction of the muscle; use said first reference power values in determining a ratio of signal characteristics from said first band and said second band of said muscle activation spectrum; determine a muscle state indicator from said muscle activation spectrum by using said ratio of signal characteristics from the first band and the second band of said muscle activation spectrum; and guide the exercise based on the determined muscle state indicator.
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Specification