Published on: 29-Jul-2024
In this podcast episode Dr. Brian Cole discusses heart rate variability, or HRV, which is an important metric for determining the body’s readiness to perform.
About HRV
Heart Rate Variability, more commonly known as HRV, is a measure of the variability between heartbeats. HRV is controlled by the autonomic (think automatic) nervous system (ANS). The ANS has two parts: sympathetic nervous system (flight or freeze), and the parasympathetic nervous system (rest and digest). The brain is constantly processing information and eliciting responses in a region called the hypothalamus.
The ANS provides signals to the hypothalamus, which then instructs the rest of the body either to stimulate or to relax different functions. Our ANS most often responds to exciting news, negative interactions, or sudden surprises or shocks. However, persistent instigators such as stress, poor sleep, unhealthy diet, dysfunctional relationships, isolation or solitude, and lack of exercise, can disrupt this balance and the body’s fight-or-flight response can shift into overdrive.
HRV: An Important Health Metric
Chronic stress resulting in low HRV can be dangerous to the cardiovascular system, leading to heart disease, heart attack (myocardial infarction) and ultimately, cardiac death. Healthy individuals, with a high HRV, tend to have improved focus, remain calm, improved mental and athletic performance, breathing, pain tolerance, blood pressure, and resilience. Regular physical activity and fitness indicate a healthy heart, and likewise, a healthy heart equates to high HRV.
Tracking resting heart rate can also indicate fitness and well-being, with a lower resting heart rate indicating stronger overall fitness. HRV is one of the most reliable, non-invasive ways to monitor the body’s balance between parasympathetic activity (measured by high HRV, low respiratory rate, and low heart rate) and sympathetic activity (measured by reduced HRV, elevated heart and respiratory rates, and high blood pressure). The vagus nerve and parasympathetic nervous system are where you seek balance and an increased HRV and vagal tone.
Related: THE LINK BETWEEN HEART RATE VARIABILITY (HRV) AND STRESS
Brian J. Cole, MD, MBA, a nationally acclaimed orthopedic surgeon, specializing in sports medicine for the knee, shoulder and elbow. Dr. Cole is honored to be named in the top 20 in sports medicine, knee and shoulder specialists repeatedly over the last 5 years as selected by his peers. His awards range from the “Best Doctors in America” since 2004 and “Top Doctor” in Chicagoland since 2003. Click here for the Complete Podcast Playlist. and your favorite platform.
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