Heart Rate Variability

Heart rate variability refers to millisecond variations between heart beats. HRV is a non-invasive measurement of the autonomic nervous system (the body's main control center) and is widely considered the most comprehensive biomarker of health and fitness.
By measuring your autonomic nervous system, HRV reveals how your body responds to exercise, illness, treatment, recovery, inflammation, stress, mental health, and every lifestyle choice you make.
Heart rate variability is an umbrella term that describes general variability between heart beats; there are a number of specific HRV metrics used to analyze different features and patterns in heart rate variability that are correlated with different physiological states. Here is a description of our HRV score.
BasicExample Output JSON
|
{
    "hrvScore": {
        "status": "complete",
        "value": 78
    }
}
{
    "hrvScore": {
        "status": "complete",
        "value": 78
    }
}
﻿
Output
Data Type
Description
hrvScore
int
The HRV Score is based on RMSSD and scaled to a meaningful 1-100 score. This is an absolute indicator of Autonomic Nervous System health and strength.
Time DomainTime-domain analysis shows how a signal changes over time and uses statistical methods to quantify the total amount of heart rate variability.
Example Output JSON
|
{
    "rmssd": {
        "status": "complete",
        "value": 1234,
    }
}
{
    "rmssd": {
        "status": "complete",
        "value": 1234,
    }
}
﻿
Output
Units
Data Type
Description
rmssd
ms
float
The square root of the mean of the squares of differences between adjacent inter-beat intervals. RMSSD is strongly backed by research and is considered the most relevant and accurate measure of the Autonomic Nervous System's Parasympathetic branch for short duration measurements.
﻿

TABLE OF CONTENTS

Basic

Time Domain

Output	Data Type	Description
hrvScore	int	The HRV Score is based on RMSSD and scaled to a meaningful 1-100 score. This is an absolute indicator of Autonomic Nervous System health and strength.

Output	Units	Data Type	Description
rmssd	ms	float	The square root of the mean of the squares of differences between adjacent inter-beat intervals. RMSSD is strongly backed by research and is considered the most relevant and accurate measure of the Autonomic Nervous System's Parasympathetic branch for short duration measurements.

Heart Rate Variability

Basic

Time Domain

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