System Method and Device for Performing Heat Stress Tests
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United States of America Patent
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Issued Date -
Oct 20, 2011
app pub date -
Apr 15, 2011
filing date -
Apr 15, 2010
priority date (Note) -
Abandoned
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Abstract
A system, method and device for testing for heat stress of a person is provided. In one embodiment, the method includes determining a first heart rate of the person at the end of a first time period during which a heart rate of the person maintained at least a first predetermined heart rate; after the first time period, determining a second heart rate of the person at the end of a second time period during which the heart rate of the person did not exceed a second predetermined heart rate; wherein the first predetermined heart rate is greater than the second predetermined heart rate; determining that the heart rate of the person transitioned from at least the first predetermined heart rate to no greater than the second predetermined heart rate within a predetermined transition time period; determining a heart rate recovery by subtracting the second heart rate from the first heart rate; determining a heart rate recovery ratio by dividing the heart rate recovery by a heart rate recover baseline; and providing a notification if the heart rate recovery ratio is beyond a threshold.
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