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2. 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.

3. 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 ...

4. This Is the Ideal Heart Rate Zone if You Want To Burn Fat - AOL

   www.aol.com/lifestyle/ideal-heart-rate-zone-want...

   ShutterstockReality check: If you want to burn fat effectively, you must first understand heart rate zones. Why, you ask? Well, because doing grueling workouts and pushing yourself as hard as ...

5. 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.

6. Here's How To Calculate Your Fat-Burning Heart Rate - AOL

   www.aol.com/heres-calculate-fat-burning-heart...

   That's why it's important to understand how to calculate your fat-burning heart rate and then implement this knowledge into your sweat sessions to maximize your results.While calculating your fat ...

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

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

   Those are times to seek out help because it may not be a reflection of your resting heart rate, but an abnormal heart rhythm that should get evaluated.” Having a pulse over 100 bpm is called ...

8. Rhythm interpretation - Wikipedia

   en.wikipedia.org/wiki/Rhythm_interpretation

   There are 6 different sinus arrhythmia. [1] [2]A normal heart should have a normal sinus rhythm, this rhythm can be identified by a ventricular rate of 60-100 bpm, at a regular rate, with a normal PR interval (0.12 to 0.20 second) and a normal QRS complex (0.12 second and less).

9. Exercise intensity - Wikipedia

   en.wikipedia.org/wiki/Exercise_intensity

   Some studies measure exercise intensity by having subjects perform exercise trials to determine peak power output, [4] which may be measured in watts, heart rate, or average cadence (cycling). This approach attempts to gauge overall workload. An informal method to determine optimal exercise intensity is the talk test.