About the Heart Rate Variability (HRV)

Heart rate variability (HRV) is the average heart rate for the base, a spontaneous fluctuations in the period between successive heartbeats. It reflects the balance between the sympathetic and parasympathetic systems. Therefore, this makes heart rate variability used to study in the clinical field and in the autonomic nervous system, a tool of great value.

Why HRV

Under the role of the autonomic nervous system, the spacing between each heartbeat as external stimulation of the body's reaction is not the same, through analysis of heart rate variability, as autonomous circulation and pointer of the autonomous nervous system. Using spectrum analysis of heart rate variability analysis was divided into three variables: HF (High Frequency) and LF (LF), and the composition ratio of the low-frequency (LF%). Low frequency (LF) under the influence of sympathetic and parasympathetic, therefore reflect on behalf of autonomic nervous system overall functionality; high frequency (HF) associated with the respiratory rate, respiratory parasympathetic about, so in high frequency region is associated with parasympathetic activity; in addition, Low-frequency components of the ratio (LF%) Response to sympathetic nerve function. So we may, by studying the three variation of heart rate variables thus learned of the autonomic nervous activity. Because of stress, stress, depression and other psychological emotions can affect the spontaneous circulation and nervous system, so we can push by spectral analysis of heart rate variability analysis of human emotions and State of mind.