If you're asking what that number is called, it's "Heart rate" or sometimes "pulse rate" or "pulse" (technically these are different, though in practice they're usually the same number).
If you're asking what a device to measure that would be, the general term is "heart rate monitor."
It measure heart beats per min. 1 heart beat is a cardiac cycle of systole(pumping) and diastole(filling). It takes 0.8 seconds for the average person to go through one cycle.
beats
Pulse
Your pulse measures the action of the heart.
You pulse basiclly measures your heartbeat. If you heart is beating fast, your pulse is fast. If your heart is beating slow, your pulse is slow. If your heart isn't beating at all, there's no pulse. That's why doctors often check a patients pulse
Pulse Rate is the number of times your heart beats in a minute. Breathing Rate (Respiratory Rate) is the number of times you breathe in one minute.
The number of times your heart beats in a minute, the heart rate.
The pulse (usually taken in the wrist) measures the heart rate.
No, it measures your heart rate. Number of times it beats in a minute.
A heart-rate monitor is used.
A continuous heart rate monitor constantly measures the heart rate. Typically, these monitors have a chest strap that transmits the heart rate to a wrist watch continuously over the period of workout. A non-continuous monitor is a monitor that has to be told to measure the heart rate. These monitors are typically watches without a chest strap. The user measures the heart rate by pushing on the watch so that firm contact is made with the user's pulse. The watch then displays the heart rate while the user pushes on the watch.
Pulse rate(AKA heart rate) is number of beats per minute
Heart rate monitor is personal monitoring device that measure the heart rate in real time (measuring the number of your heart's beat per minute).
A single number of expression cannot have a unit rate. You need at least two measures.
The number of times your heart beats in a minute, the heart rate.
Your target heart rate should be between 75-85% of your max heart rate. To find your max heart rate you take 220 and subtract your age from it to get your max heart rate. Then you can find your target heart rate easily by taking a calculator, typing in your max heart rate, and then type in "subtract (-) 15%". Record that number on a piece of paper of some sort. Then retype your max heart rate and then type in "subtract(-) 25%". Also record that number down on the same piece of paper you wrote the original number on and put a dash (-) between the numbers. This will show you the two numbers your target heart rate should be in-between.
Heart rate is the number of times the heart beats per minute. It is usually recorded as bpm, which stands for "beats per minute".
Pulse
Maximal heart rate is the highest number of times per minuet that your heart could contract within one minuet. A heart rate for an senior is about 120- 160 BPM