Methods of Assessment

Our simple non-invasive tests determine the root cause of a health problem.

Heart Rate Variability (HRV)


Heart rate variability (HRV) is a measure of the continuous interplay between sympathetic and parasympathetic influences on heart rate that yields information about autonomic flexibility and thereby represents the capacity for regulated emotional responding.

“HRV reflects the degree to which cardiac activity can be modulated to meet changing situational demands.”

The sympathetic (SNS) and parasympathetic (PNS) branches of the autonomic nervous system (ANS) antagonistically influence the lengths of time between consecutive heartbeats. Faster heart rates, which can be due to increased SNS and/or lower PNS activity, correspond to a shorter interbeat interval while slower heart rates have a longer interbeat interval, which can be attributed to increased PNS and/or decreased SNS activity.

The frequency-based HRV analyses are based on the fact that the variations in heart rate produced by SNS and PNS activity occur at different speeds, or frequencies. SNS is slow acting and mediated by norepinephrine while PNS influence is fast acting and mediated by acetylcholine.


If you’re looking for the best holistic therapy in Houston, then look no further than Comprehensive Health. Our skilled integrative doctors have years of experience in alternative medicine and can help you achieve a better way of life with natural, healthy means. All of our integrative therapies are noninvasive and are designed to help find any potentially harmful materials or activities in your body. Before any procedure, our integrative doctors will go over the entire process to make sure you understand and are completely comfortable with the process. Our holistic doctors can even recommend natural therapies and supplements that can help you become even healthier. Schedule your HRV alternative therapy today by contacting Comprehensive Health at our Houston location.