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HRV Parameters

Heart Rate Variability (HRV) measures the variation in time between consecutive heartbeats. Understanding these metrics helps assess autonomic nervous system function and overall health.

About HRV Analysis

Heart Rate Variability analysis has been established by the European Society of Cardiology and the North American Society of Pacing and Electrophysiology as a valuable tool for assessing autonomic nervous system function.

Time-domain parameters like RMSSD, SDNN, and pNN50 are calculated directly from the intervals between heartbeats (RR or NN intervals). These metrics provide insights into parasympathetic activity, overall variability, and cardiovascular health.

Each article in this series offers three depth levels — Simple for client communication, Technical for clinical practice, and Expert for research context.