Method and system for estimating exercise capacity
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United States of America Patent
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Nov 4, 2014
Grant Date -
Jul 29, 2010
app pub date -
Feb 21, 2008
filing date -
Feb 23, 2007
priority date (Note) -
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Abstract
A method of estimating exercise capacity of a subject is disclosed. The method uses output radiofrequency signals transmitted to the subject during exercise and input radiofrequency signals received from the subject during exercise. The method comprises: determining a phase shift of the input radiofrequency signals relative to the output radiofrequency signals; calculating cardiac output based on the phase shift; and using the cardiac output for estimating the exercise capacity of the subject.
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