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The Breathing IQ: An Anthropometric Index of Diaphragmatic Breathing Efficiency

The Breathing IQ: An Anthropometric Index of Diaphragmatic Breathing Efficiency by Dr. Belisa Vranich and Rachel Lee

At Ice Bath Boston & Breath, we use the BIQ to assess and correct dysfunctional breathing mechanics, helping clients breathe more efficiently for better stress regulation, reduced anxiety, and improved physiological function.

Impact on Our Work:

A single 90-minute session of corrective breathing exercises significantly improved breathing range of motion (ROM) and location of movement (LOM) in 89.5% of participants (N=384, p<0.001).

Key Findings:

This study introduces the Breathing IQ (BIQ) as a novel method to assess diaphragmatic breathing efficiency and identify biomechanical breathing dysfunctions.

Our Contribution: 

Many breathing pattern disorders (BPD) go undiagnosed because they are traditionally limited to hyperventilation syndrome. However, mechanical breathing dysfunction plays a critical role in both physical and mental health. 

Why It Matters:

Published in Frontiers in Physiology

Published Research – The Breathing IQ

Ice Baths & Hormonal Health 

Cold Exposure & Psychophysiological Safety 

Breathing Mechanics & Anxiety in Women 

Ultrasound Validation of the Breathing IQ 

Ice Baths & Hormonal Health  – Researching the potential for cold exposure to alleviate symptoms of PMS, PMDD, endometriosis, PCOS, and menopause by reducing inflammation and stabilizing mood and hormone-related symptoms.

Researching the potential for cold exposure to alleviate symptoms of PMS, PMDD, endometriosis, PCOS, and menopause by reducing inflammation and stabilizing mood and hormone-related symptoms.

Cold Exposure & Psychophysiological Safety – Exploring how ice baths help individuals develop a sense of control and safety under stress, a key factor in reducing anxiety and emotional dysregulation.

 Exploring how ice baths help individuals develop a sense of control and safety under stress, a key factor in reducing anxiety and emotional dysregulation.

Breathing Mechanics & Anxiety in Women – Investigating how societal beauty standards (e.g., “sucking in” for a narrow waist)  impact rib expansion and breathing mechanics, potentially contributing to the higher rates of anxiety in women.

 Investigating how societal beauty standards (e.g., “sucking in” for a narrow waist)  impact rib expansion and breathing mechanics, potentially contributing to the higher rates of anxiety in women.

Ultrasound Validation of the Breathing IQ  – In collaboration with Dr. Belisa Vranich, we are conducting a study using ultrasound imaging to further validate the BIQ’s ability to measure diaphragmatic breathing efficiency.

 In collaboration with Dr. Belisa Vranich, we are conducting a study using ultrasound imaging to further validate the BIQ’s ability to measure diaphragmatic breathing efficiency.

Our commitment to research extends beyond published work—we are actively exploring new areas of breathwork and cold exposure science to optimize stress regulation, mental resilience, and women's health.

Ongoing & Future Research 

READ THE ARTICLE

Curious about what really happens when you step into cold water? Our literature review takes you beyond the hype and into the science. We’ve pulled together an in-depth summary of the existing research on cold water immersion, covering everything from immune function and athletic recovery to pain management, stress resilience, and more. Explore the evidence to understand how cold exposure impacts your body and how it can support your personal goals.

The Science Behind Ice Baths

Our research-based approach ensures that every session is backed by data, not guesswork.

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Breathwork and cold exposure aren’t just theories they’re proven, research-backed methods for improving mental and physical well-being.

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