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BCIA Continuing Education Posts
The BioSource Faculty Explain Peer-Reviewed Science


Breathing Basics - Part 1: Anatomy and Physiology
Breathing ensures healthy CO2 levels. The main functions of breathing are gas exchange and acid-base (pH) regulation. The respiratory...
BioSource Faculty
Mar 24, 20236 min read
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Dr. Moss on Mentoring, Supervision, and Consultation
BCIA requires mentoring as an educational process for individuals seeking BCIA certification. BCIA requires clinical supervision for...
Fred Shaffer
Feb 24, 20237 min read
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Zachary Meehan on Childhood Trauma
Events are traumatic when they involve harm or threat of harm to oneself or others (McLaughlin et al., 2014). Childhood trauma is a...
BioSource Faculty
Jan 24, 20237 min read
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Neuroscience Breakthroughs Since Graduate School - Part 5: Depression
Since major depressive disorder (MDD) is a heterogeneous disorder, researchers study its diverse phenotypes. Heritability ranges from...
BioSource Faculty
Dec 28, 202218 min read
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Rethinking the Resonance Frequency (RF) - Part 3: Slow-Paced Contraction
Slow-paced contraction (SPC) provides an alternative and unproven method for determining the resonance frequency (RF) in one or two...
BioSource Faculty
Dec 12, 20228 min read
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Neuroscience Breakthroughs Since Graduate School - Part 1: Sleep
Behavioral neuroscience discoveries have proceeded at a rapid pace. This series highlights cutting-edge findings and explains their...
BioSource Faculty
Nov 25, 202214 min read
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Rethinking the Resonance Frequency (RF) - Part 1: Understanding Resonance
Randomized controlled trials have demonstrated the efficacy of HRV biofeedback for diverse clinical disorders like depression, diabetes,...
BioSource Faculty
Nov 23, 20229 min read
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A Guide to Selecting HRV Norms
Measurement context and client characteristics are crucial to interpreting HRV time- and frequency-domain measurements. In this post, we...
BioSource Faculty
Nov 15, 202215 min read
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HRV Time-Domain Measurements for Smart People
HRV Time-Domain Measurements for Smart People describes these measurements, caveats, and practical applications.
BioSource Faculty
Oct 22, 202213 min read
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How Do You Know When HRV Training is Succeeding?
During slow-paced breathing between 4.6 to 6.5 bpm, you can examine your client's raw heart rate (HR) and respiration waveforms,...
Fred Shaffer
Aug 1, 20222 min read
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Slow-Paced Contraction Increases HRV
Slow-paced contraction to increase heart rate variability
Fred Shaffer
Jul 31, 20226 min read
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Low-Frequency Power and Coherence Index HRV Biofeedback Training Success
The low-frequency (LF) band (0.04-0.15 Hz) is affected by breathing from ~3-9 bpm (Task Force, 1996). The baroreflex system’s resonance...
Fred Shaffer
Jul 28, 20223 min read
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When Should You Not Use PPG Sensors to Measure HRV?
The electrocardiograph (ECG) and photoplethysmograph (PPG) are two methods of detecting heart rate (HR) and heart rate variability (HRV)....
Fred Shaffer
Jul 27, 20222 min read
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How HRV Biofeedback Increases RSA
Respiratory sinus arrhythmia (RSA) is the speeding and slowing of the heart across each breathing cycle. RSA is the primary and entirely...
Fred Shaffer
Jul 26, 20221 min read
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Faster Heart Rates Lower HRV and Increase Dementia Risk
Heart rate (HR) is important because a high rate can reduce heart rate variability (HRV), the changes in the time intervals between...
Fred Shaffer
Jul 26, 20222 min read
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