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2. Heart rate - Wikipedia

   en.wikipedia.org/wiki/Heart_rate

   A medical monitoring device displaying a normal human heart rate. Heart rate is the frequency of the heartbeat measured by the number of contractions of the heart per minute (beats per minute, or bpm). The heart rate varies according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide.

3. Vital signs - Wikipedia

   en.wikipedia.org/wiki/Vital_signs

   A child aged 1–⁠3 years old can have a heart rate of 80–⁠130 bpm, a child aged 3–⁠5 years old a heart rate of 80–⁠120 bpm, an older child (age of 6–10) a heart rate of 70–⁠110 bpm, and an adolescent (age 11–⁠14) a heart rate of 60–105 bpm. [12] An adult (age 15+) can have a heart rate of 60–100 bpm. [12]

4. QRS complex - Wikipedia

   en.wikipedia.org/wiki/QRS_complex

   Diagram showing how the polarity of the QRS complex in leads I, II, and III can be used to estimate the heart's electrical axis in the frontal plane. The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually the central and most visually obvious part of the tracing.

5. Can You Complete This 10-Second Test? A New Study Says ... - AOL

   www.aol.com/lifestyle/complete-10-second-test...

   A new study found that 20% of participants were unable to perform a 10-second single-leg balance test. Researchers suggest balance may be a stronger indicator of our overall health than ever ...

6. Here Are Cardiologist-Approved Ways to Lower Your Resting ...

   www.aol.com/cardiologist-approved-ways-lower...

   Cardiologists explain how to lower resting heart rate, what a healthy heart rate is, and how to measure your own. ... Count your pulse for 15 seconds and multiply by 4 to find your beats per minute.

7. Your resting heart rate can tell you a lot about your health ...

   www.aol.com/finance/resting-heart-rate-tell-lot...

   Count the number of beats in 60 seconds “Folks can do 30 seconds and multiply it by two, 20 seconds multiplied by three,” Ebinger says. ... “Your heart rate is intrinsically linked to this ...

8. Heart rate variability - Wikipedia

   en.wikipedia.org/wiki/Heart_rate_variability

   Heart rate variability visualized with R-R interval changes Electrocardiogram (ECG) recording of a canine heart that illustrates beat-to-beat variability in R–R interval (top) and heart rate (bottom). Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the ...

9. If You Can Pass This Simple 10-Second Test, You’ll Probably ...

   www.aol.com/lifestyle/pass-simple-10-second-test...

   On the other hand, if you are over the age of 50 and cannot perform this 10-second balance test, you could be at a higher risk of dying within a decade compared to your peers, according to 2022 ...