Heart rate variability

Heart rate variability (HRV) refers to the variation in the time interval between each heartbeat. Even though it might seem ideal for our hearts to beat like metronomes, with exact regularity, having a healthy amount of variability in the heart rate is actually a good thing. This is because HRV is linked to our body's autonomic nervous system (ANS) and its ability to efficiently respond to varying demands.

File:Heart rate variability (HRV).svg

Heart rate variability (HRV)

Significance

HRV is an important biomarker for gauging how our bodies respond to stress and recovery. Higher HRV (more variability between beats) is commonly associated with good fitness level, resilience to stress, and better overall health, while lower HRV is often indicative of stress, fatigue, or poor health.

Measurement

HRV can be measured using a heart rate monitor or a device that can accurately capture each individual heartbeat. Various smartphone apps and wearable technologies also provide the tools to measure HRV. This data can be especially useful for athletes looking to optimize their training or individuals looking to manage stress.

Factors Influencing HRV

Numerous factors can influence HRV, including age, gender, stress, anxiety, poor sleep, dehydration, poor nutrition, and certain health conditions like diabetes and heart disease.

See Also

• Autonomic Nervous System
• Cardiology
• Stress (biology)

References

• "Heart rate variability: A new way to track well-being". Harvard Health Publishing, Harvard Medical School.
• "Heart Rate Variability". American Heart Association.
• "What Is Heart Rate Variability–and Do You Need to Know Yours?" Cleveland Clinic.

External Links

Heart Rate Variability - American Heart Association Heart Rate Variability - ScienceDirect