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Created page with "A simplified chart of heart rate against exercise intensity showing [[Maximum Heart Rate, Heart Rate Reserve, Resting..."
[[File:HeartRateSimplified.svg|right|thumb|500px|A simplified chart of heart rate against exercise intensity showing [[Maximum Heart Rate]], [[Heart Rate Reserve]], [[Resting Heart Rate]], [[Orthostatic Heart Rate]], [[Zero Power Heart Rate]], and [[Heart Rate Deflection]].]]
Zero Power Heart Rate (HR<sub>zero</sub>) is how fast your heart beats when you are not generating any useful power by moving, such as standing still. HR<sub>zero</sub> is typically different to [[Resting Heart Rate]] (HR<sub>rest</sub>) which is measured sitting or lying down. While this difference can be small, it does change the calculation for [[Heart Rate Reserve]] and for calculating [[Running Economy]] and [[HrPwr]]. The difference between HR<sub>zero</sub> is typically different to [[Resting Heart Rate]] (HR<sub>rest</sub>) is used in the orthostatic test, where a difference of >30 BPM is a diagnosis for hypovolemia (low blood volume) <ref name="AHRQ"/><ref name="PalatiniBenetos2006"/>.
[[File:Zero Power Study.jpg|center|thumb|300px|The relationship between power output and heart rate, showing a linear relationship and the intercept<ref name="ArtsKuipers2008"/>.]]
=See Also=
* [[Heart Rate]] for an overview
* [[Maximum Heart Rate]]
* [[Heart Rate Reserve]]
* [[Pulse Oximeter]]
* [[Heart Rate Deflection]]
=References=
<references>
<ref name="ArtsKuipers2008">F. Arts, H. Kuipers, The Relation Between Power Output, Oxygen Uptake and Heart Rate in Male Athletes, International Journal of Sports Medicine, volume 15, issue 05, 2008, pages 228–231, ISSN [http://www.worldcat.org/issn/0172-4622 0172-4622], doi [http://dx.doi.org/10.1055/s-2007-1021051 10.1055/s-2007-1021051]</ref>
<ref name="PalatiniBenetos2006">Paolo Palatini, Athanase Benetos, Guido Grassi, Stevo Julius, Sverre E Kjeldsen, Giuseppe Mancia, Krzystof Narkiewicz, Gianfranco Parati, Achille C Pessina, Luis M Ruilope, Alberto Zanchetti, Identification and management of the hypertensive patient with elevated heart rate: statement of a European Society of Hypertension Consensus Meeting, Journal of Hypertension, volume 24, issue 4, 2006, pages 603–610, ISSN [http://www.worldcat.org/issn/0263-6352 0263-6352], doi [http://dx.doi.org/10.1097/01.hjh.0000217838.49842.1e 10.1097/01.hjh.0000217838.49842.1e]</ref>
<ref name="AHRQ">Agency for healthcare research and quality. (2013). Orthostatic Vital Sign Measurement. Retrieved 16 March, 2020, from https://www.ahrq.gov/professionals/systems/hospital/fallpxtoolkit/fallpxtk-tool3f.html</ref>
</references>
Zero Power Heart Rate (HR<sub>zero</sub>) is how fast your heart beats when you are not generating any useful power by moving, such as standing still. HR<sub>zero</sub> is typically different to [[Resting Heart Rate]] (HR<sub>rest</sub>) which is measured sitting or lying down. While this difference can be small, it does change the calculation for [[Heart Rate Reserve]] and for calculating [[Running Economy]] and [[HrPwr]]. The difference between HR<sub>zero</sub> is typically different to [[Resting Heart Rate]] (HR<sub>rest</sub>) is used in the orthostatic test, where a difference of >30 BPM is a diagnosis for hypovolemia (low blood volume) <ref name="AHRQ"/><ref name="PalatiniBenetos2006"/>.
[[File:Zero Power Study.jpg|center|thumb|300px|The relationship between power output and heart rate, showing a linear relationship and the intercept<ref name="ArtsKuipers2008"/>.]]
=See Also=
* [[Heart Rate]] for an overview
* [[Maximum Heart Rate]]
* [[Heart Rate Reserve]]
* [[Pulse Oximeter]]
* [[Heart Rate Deflection]]
=References=
<references>
<ref name="ArtsKuipers2008">F. Arts, H. Kuipers, The Relation Between Power Output, Oxygen Uptake and Heart Rate in Male Athletes, International Journal of Sports Medicine, volume 15, issue 05, 2008, pages 228–231, ISSN [http://www.worldcat.org/issn/0172-4622 0172-4622], doi [http://dx.doi.org/10.1055/s-2007-1021051 10.1055/s-2007-1021051]</ref>
<ref name="PalatiniBenetos2006">Paolo Palatini, Athanase Benetos, Guido Grassi, Stevo Julius, Sverre E Kjeldsen, Giuseppe Mancia, Krzystof Narkiewicz, Gianfranco Parati, Achille C Pessina, Luis M Ruilope, Alberto Zanchetti, Identification and management of the hypertensive patient with elevated heart rate: statement of a European Society of Hypertension Consensus Meeting, Journal of Hypertension, volume 24, issue 4, 2006, pages 603–610, ISSN [http://www.worldcat.org/issn/0263-6352 0263-6352], doi [http://dx.doi.org/10.1097/01.hjh.0000217838.49842.1e 10.1097/01.hjh.0000217838.49842.1e]</ref>
<ref name="AHRQ">Agency for healthcare research and quality. (2013). Orthostatic Vital Sign Measurement. Retrieved 16 March, 2020, from https://www.ahrq.gov/professionals/systems/hospital/fallpxtoolkit/fallpxtk-tool3f.html</ref>
</references>
