31. Understanding Heart Rate Variability to Improve Therapy Outcomes

Heart rate variability (HRV) is one of the most powerful yet often overlooked indicators of both mental and physical health. It’s closely linked to anxiety, depression, trauma, heart disease, and more. But for therapists, HRV offers even greater value—it provides insight into whether a patient is in shutdown, stuck in fight-or-flight mode, or able to engage and process emotions. While traditional therapy often focuses on thoughts and behaviors, the nervous system plays a critical role in whether interventions actually succeed. A patient stuck in survival mode cannot engage in deep reflection or emotional processing, no matter how skilled the therapist is. Recognizing these physiological patterns allows clinicians to adjust their approach, making sessions more effective and creating a sense of safety for the patient. In this episode, Brenda explains the science behind heart rate variability and connects it to Polyvagal Theory and practical therapy work. She also introduces biofeedback as a powerful tool to help patients strengthen their ability to shift between nervous system states. By understanding HRV, therapists can better support their patients and enhance the effectiveness of their therapy sessions. References:  Bradshaw, G. A., & Schore, A. N. (2007). How elephants are opening doors: Developmental neuroethology, attachment and social context. Ethology, 113, 426-436. Deb Dana (2018). The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation. WW Norton & Company, Ltd. Inna Khazan (2013). The Clinical Handbook of Biofeedback: A Step-by-Step Guide for Training and Practice with Mindfulness. Wiley-Blackwell. Porges, S. W. (2009). Reciprocal influences between body and brain in the perception and expression of affect: A Polyvagal perspective. In D. Fosha, D. J., Siegel, & M. F. Solomon, M. (Eds.), The healing power of emotion: Affective neuroscience, development & clinical practice (pp. 27-54). New York, NY: Norton.