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2. 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 ...

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

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

   Research has shown higher resting heart rate to be associated with higher body weight, higher blood pressure, and lower physical fitness, the AHA notes. Other studies have demonstrated a link ...

4. 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]

5. Cardiac physiology - Wikipedia

   en.wikipedia.org/wiki/Cardiac_physiology

   The resting heart rate of a newborn can be 120 beats per minute (bpm) and this gradually decreases until maturity and then gradually increases again with age. The adult resting heart rate ranges from 60 to 100 bpm. Exercise and fitness levels, age and basal metabolic rate can all affect the heart rate. An athlete's heart rate can be lower than ...

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

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

   A lower resting heart rate or slower heartbeat will fill the ventricles/heart better and allow for more of a forceful contraction of blood out to the rest of the body, says Dr. Weinberg.

7. Rate pressure product - Wikipedia

   en.wikipedia.org/wiki/Rate_pressure_product

   The units for the Heart Rate are beats per minute and for the Blood Pressure mmHg. Rate pressure product is a measure of the stress put on the cardiac muscle based on the number of times it needs to beat per minute (HR) and the arterial blood pressure that it is pumping against (SBP). It will be a direct indication of the energy demand of the ...

8. Blood pressure - Wikipedia

   en.wikipedia.org/wiki/Blood_pressure

   In pregnancy, it is the fetal heart and not the mother's heart that builds up the fetal blood pressure to drive blood through the fetal circulation. The blood pressure in the fetal aorta is approximately 30 mmHg at 20 weeks of gestation, and increases to approximately 45 mmHg at 40 weeks of gestation. [27]

9. What is a normal blood pressure reading? - AOL

   www.aol.com/lifestyle/normal-blood-pressure...

   "Your blood pressure is supposed to be under 140 over 90, optimally closer to 120 over 80."