Method, system and software product for the measurement of heart rate variability
First Claim
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1. A method of measuring heart rate variability of a user, comprising:
- instructing the user when to breathe in and breathe out;
receiving a signal from a sensor responsive to the user'"'"'s heart beat while the user breathes in and out as instructed;
processing the received signal to determine heart beat intervals of the user;
calculating a measure of heart rate variability of the user from the processed heart beat intervals;
excluding irregular heart beat intervals from the calculation of heart rate variability;
inputting by the user on a periodic basis a value of training load;
storing the periodic training load values in a first database;
storing periodic heart rate variability measures in a second database;
retrieving from the first database a set of periodic training load values input over a predetermined period of time;
retrieving from the second database a set of periodic heart rate variability measures corresponding to a period of time substantially equal to the predetermined period of time; and
analyzing the set of training load values and the set of heart rate variability measures to determine correlation between them.
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Abstract
The invention relates to a method, system, and software product for measuring heart rate variability. The method comprises instructing a user when to breathe in and breathe out, receiving a signal from a sensor responsive to the heart beat of the user, processing the received signal to determine heart beat intervals of the user and calculating a measure of heart rate variability of the user from the processed heart beat intervals.
8 Citations
20 Claims
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1. A method of measuring heart rate variability of a user, comprising:
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instructing the user when to breathe in and breathe out; receiving a signal from a sensor responsive to the user'"'"'s heart beat while the user breathes in and out as instructed; processing the received signal to determine heart beat intervals of the user; calculating a measure of heart rate variability of the user from the processed heart beat intervals; excluding irregular heart beat intervals from the calculation of heart rate variability; inputting by the user on a periodic basis a value of training load; storing the periodic training load values in a first database; storing periodic heart rate variability measures in a second database; retrieving from the first database a set of periodic training load values input over a predetermined period of time; retrieving from the second database a set of periodic heart rate variability measures corresponding to a period of time substantially equal to the predetermined period of time; and analyzing the set of training load values and the set of heart rate variability measures to determine correlation between them. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 18, 19, 20)
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4. A method of measuring heart rate variability of a user, comprising:
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instructing the user when to breathe in and breathe out; receiving a signal from a sensor responsive to the user'"'"'s heart beat while the user breathes in and out as instructed; processing the received signal to determine heart beat intervals of the user; calculating a measure of heart rate variability of the user from the processed heart beat intervals; excluding irregular heart beat intervals from the calculation of heart rate variability; computing a first measure of short term change of the heart rate variability measure; computing a second measure of medium term change of the heart rate variability measure; computing a third measure of long term change of the heart rate variability measure; assigning to the first change measure a first value of significance; assigning to the second change measure a second value of significance; assigning to the third change measure a third value of significance; and presenting to the user at substantially the same time indicators of the first value of significance and the second value of significance and the third value of significance. - View Dependent Claims (5)
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13. A method of measuring heart rate variability of a user, comprising:
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instructing the user when to breathe in and breathe out; receiving a signal from a sensor responsive to the user'"'"'s heart beat while the user breathes in and out as instructed; processing the received signal to determine heart beat intervals of the user; calculating a measure of heart rate variability of the user from the processed heart beat intervals; excluding irregular heart beat intervals from the calculation of heart rate variability; determining if the user desires recommendations relevant to heart failure patients; instructing the user to sit or lie down; wherein instructing the user when to breathe in and breathe out comprises instructing the user to breathe in more quickly and breathe out more quickly than would be the instruction to a user who does not suffer from heart failure; computing the number of excluded beats over a predetermined period of time; terminating the heart rate variability measurement if the number of excluded beats exceeds a predetermined threshold; and presenting at least one exercise recommendation appropriate to the user based on the measure of heart rate variability if the number of excluded beats does not exceed the predetermined threshold.
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14. A method of measuring heart rate variability of a user, comprising:
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receiving a signal from a sensor responsive to the user'"'"'s heart beat while the user breathes in and out; processing the received signal to determine heart beat intervals of the user; calculating a measure of heart rate variability of the user from the processed heart beat intervals; excluding irregular heart beat intervals from the calculation of heart rate variability; calculating heart rate from the processed heart beat intervals after excluding irregular heart beat intervals; calculating a Parasympathetic Withdrawal Index using the current value of the heart rate and a prior value of the heart rate and the current value of the heart rate variability measure and a prior value of the heart rate variability measure; and generating an alarm to the user if the Parasympathetic Withdrawal Index is less than a predetermined threshold.
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Specification