Heart rate variability describes the variations in the intervals between consecutive heartbeats. Even when the heart rate is stable, the time between consecutive beats can vary considerably.
Heart rate variability
Fluctuations of interbeat intervals. Heart rate variability of a healthy subject is in general large in resting conditions and during light exercise.
Chapter 4. Heart Rate Variability: Measurement Methods and Practical Implications
Philippe Lopes, John White ...
Rusko, H.K.: Does increase in training intensity vs. volume influence supine and standing heart rate and heart rate variability. Overtraining and Overreaching in Sport - Congress, Memphis, Tennessee, 1996.
Make a conscious effort to plan for several short bursts of exercise throughout the day. Short exercise bursts help to improve heart rate variability which is the greatest predictor of health. Take 10. You are worth it! ...
chest strap transmitter and a wrist receiver (which commonly doubles as a watch). Strapless heart rate monitors are accessible as well, but lack some of the functionality of the original design. Recent models besides evaluate heart rate variability ...
Questionnaires also were used to assess changes in emotional and spiritual well-being. Sympathetic nervous system activity was assessed by blood pressure, heart rate and heart rate variability recordings.
 See also: Exercise, Heart rate, Health, Aerobic, Work
  
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