Zero Power Heart Rate

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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 (HRzero) is how fast your heart beats when you are not generating any useful power by moving, such as standing still. HRzero is typically different to Resting Heart Rate (HRrest) 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 HRzero is typically different to Resting Heart Rate (HRrest) is used in the orthostatic test, where a difference of >30 BPM is a diagnosis for hypovolemia (low blood volume) [1][2].

The relationship between power output and heart rate, showing a linear relationship and the intercept[3].

1 See Also

2 References

  1. Agency for healthcare research and quality. (2013). Orthostatic Vital Sign Measurement. Retrieved 16 March, 2020, from
  2. 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 0263-6352, doi 10.1097/01.hjh.0000217838.49842.1e
  3. 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 0172-4622, doi 10.1055/s-2007-1021051