HRV Is Your Body’s True Performance Metric
Your body broadcasts its true operating status in the space between heartbeats.
HRTioOctober 8, 2025
Interbeat Interval Analysis
Meaning
Interbeat Interval Analysis, often referred to as RR interval analysis, is a quantitative method used in clinical physiology to measure the precise time elapsed between successive heartbeats, typically derived from an electrocardiogram (ECG) or photoplethysmography (PPG) sensor. The resulting data stream of beat-to-beat variations forms the basis for calculating Heart Rate Variability (HRV), a key non-invasive biomarker. This analysis provides an objective measure of the Autonomic Nervous System’s (ANS) regulatory influence on cardiac function, reflecting the body’s overall stress load and adaptive capacity.
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