
Heart Rate Variability
Heart rate variability (HRV) is a measure that evaluates the fluctuation in time between one heartbeat and the next, also known as the RR interval or interbeat interval. This indicator is regulated by the autonomic nervous system (ANS), specifically by the interaction between the sympathetic system, which activates the body for physical exertion, and the parasympathetic system, which promotes recovery and rest.
Interest in HRV has increased in recent years, largely thanks to technological advances that allow for rapid and reliable measurement through mobile apps, heart rate monitors, and fingertip pulse sensors. These tools have proven to be reliable methods for assessing HRV, even in short-duration measurements (one minute), whether in the supine, sitting, or standing position.
In practical terms, HRV acts as a "thermometer" of the body's physiological state, reflecting its ability to adapt to physical and mental stress, as well as its level of recovery and performance. HRV has been shown to be a good predictor of disease in elite athletes, although its usefulness in predicting injuries has not yet been validated in humans. Furthermore, although HRV-guided training appears to be more effective for developing aerobic performance compared to pre-established programs, its reliability as a predictor of overtraining remains debated due to certain methodological limitations in the research.
What is Heart Rate Variability (HRV) ?
Heart rate variability (HRV) is the time difference between consecutive heartbeats, also known as the RR interval or interbeat interval. This time between heartbeats is not fixed or constant, but varies with each pulse, giving rise to the term "heart rate variability."
Table of Contents - Heart Rate Variability (HRV)
- Heart Rate Variability (HRV) and Its Relationship to Recovery
- Importance of HRV for Athletes
- How to Measure HRV
- HRV Applications
- Tools for Measuring HRV
- Relationship between Heart Rate Variability (HRV) and Aging: Benefits of Physical Exercise
- How Does Heart Rate Variability (HRV) Affect Performance?

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The philosophy of our sports nutrition store is based on research. We use it to formulate all our products, not marketing. We use 100% natural ingredients and only those necessary for performance.
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We don't use artificial sweeteners, colors, or flavors. We work with the highest quality raw materials to offer an exceptional natural flavor, the best in sports supplements, with carefully crafted products and fully guaranteed quality.
Perfection in every detail
From product function to usability, taste, quality, and packaging design, we make no compromises and always strive for perfection.
Quality, not advertising
We don't spend large sums on sponsorships. We prefer to invest in improving each product, achieving the best design, formulation, and production. This way, professional and amateur athletes enjoy our top-quality sports nutrition.
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