Heart rate reserve (HRR) is the difference between a person's measured or predicted maximum heart rate and resting heart rate. Some methods of measurement of exercise intensity measure percentage of heart rate reserve. Additionally, as a person increases their cardiovascular fitness, their HRrest will drop, thus the heart rate reserve will increase. Percentage of HRR is equivalent to percentage of VO2 reserve.
- HRR = HRmax − HRrest
This is often used to gauge exercise intensity (first used in 1957 by Karvonen).
Karvonen's study findings have been questioned, due to the following:
- The study did not use VO2 data to develop the equation.
- Only six subjects were used, and the correlation between the percentages of HRR and VO2 max was not statistically significant.
Read more about this topic: Heart Rate
Famous quotes containing the words heart, rate and/or reserve:
“Philosophic argument, especially that drawn from the vastness of the universe, in comparison with the apparent insignificance of this globe, has sometimes shaken my reason for the faith that is in me; but my heart has always assured and reassured me that the gospel of Jesus Christ must be Divine Reality. The Sermon on the Mount cannot be a mere human production. This belief enters into the very depth of my conscience. The whole history of man proves it.”
—Daniel Webster (1782–1852)
“At this very moment,... the most frightful horrors are taking place in every corner of the world. People are being crushed, slashed, disembowelled, mangled; their dead bodies rot and their eyes decay with the rest. Screams of pain and fear go pulsing through the air at the rate of eleven hundred feet per second. After travelling for three seconds they are perfectly inaudible. These are distressing facts; but do we enjoy life any the less because of them? Most certainly we do not.”
—Aldous Huxley (1894–1963)
“Common experience is the gold reserve which confers an exchange value on the currency which words are; without this reserve of shared experiences, all our pronouncements are cheques drawn on insufficient funds.”
—René Daumal (1908–1944)