Heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute (bpm). Heart rate can vary as the body's need to absorb oxygen and excrete carbon dioxide changes, such as during physical exercise or sleep.
The measurement of heart rate is used by medical professionals to assist in the diagnosis and tracking of medical conditions. It is also used by individuals, such as athletes, who are interested in monitoring their heart rate to gain maximum efficiency from their training. The R wave to R wave interval (RR interval) is the inverse of the heart rate.
Read more about Heart Rate: Measurement, Resting Heart Rate, Maximum, Target Rate, Heart Rate Reserve, Recovery Heart Rate, As A Risk Factor
Famous quotes containing the words heart and/or rate:
“And wilt thou leave me thus?
That hath loved thee so long
In wealth and woe among:
And is thy heart so strong
As for to leave me thus?
Say nay! say nay!”
—Sir Thomas Wyatt (1503?–1542)
“Writing a book I have found to be like building a house. A man forms a plan, and collects materials. He thinks he has enough to raise a large and stately edifice; but after he has arranged, compacted and polished, his work turns out to be a very small performance. The authour however like the builder, knows how much labour his work has cost him; and therefore estimates it at a higher rate than other people think it deserves,”
—James Boswell (1740–1795)