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


HRV Experiment Planning, Data Analysis, and Data Reporting
Laborde, Mosley, and Thayer translate complex signal-processing literature into a pragmatic code of conduct.
BioSource Faculty
May 1, 20259 min read


5-Second Science: Wearable Composite Health Scores Require Validation
Future standards must include open algorithms and population-level validation to increase clinical trust.
BioSource Faculty
Apr 21, 20254 min read


A Comprehensive Guide to HRV Myths
This review addresses 14 misconceptions regarding cardiovascular health, HRV measurement, and HRV biofeedback training.
BioSource Faculty
Aug 7, 202423 min read


HRV Myths: You Should Trust Smartphone HRV App Values
HRV time- and frequency-domain values obtained from smartphone apps may be invalid due to their failure to control artifacts. Cautiously...
BioSource Faculty
Feb 11, 20241 min read


Rethinking the Resonance Frequency (RF) - Part 2: Slow-Paced Breathing
Resonance frequency (RF) assessment identifies the stimulation frequency producing the greatest amplitude heart rate oscillations in one...
BioSource Faculty
Dec 3, 202212 min read


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


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


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


Slow-Paced Contraction Increases HRV
Slow-paced contraction to increase heart rate variability
Fred Shaffer
Jul 31, 20226 min read
bottom of page
