Key result
The Zephyr BioHarness 3.0 significantly underestimated heart rate standard deviation compared to the ECG-derived tachogram (4.51 vs 5.63 bpm, P=0.0043), indicating it is not reliable for clinical heart rate variability measurements.
Why the study?
Does the heart rate signal from the Zephyr BioHarness 3.0 provide reliable mean heart rate and heart rate variability measurements compared to an ECG-derived tachogram in healthy subjects?
Observational (n=10)
No
Does the heart rate signal from the Zephyr BioHarness 3.0 provide reliable mean heart rate and heart rate variability measurements compared to an ECG-derived tachogram in healthy subjects?
The Zephyr BioHarness 3.0 provides reliable mean heart rate estimations but significantly underestimates heart rate variability, limiting its clinical utility for HRV-based risk assessment.
Answers are grounded in this paper and cite their sources.
Limits wearable HRV use in practice; leaves open validation across clinical populations.
The Zephyr BioHarness 3.0 (BH3) is a popular wearable system specifically designed for training optimization of professional athletes. BH3 provides the electrocardiogram (ECG_BH3) and the heart-rate signal (HRS_BH3). Aim of this study is to evaluate the reliability of HRS_BH3 to assess its clinical applicability to the general population for cardiac-risk evaluations. Data were acquired from 10 healthy subjects (age: 3417 years) during a 5-minutes rest. Since the tachogram represents the standard signal for studying the heart rate (HR) and its variability, ECG_BH3 was elaborated in order to get the tachogram (HRS_TG). HRS_BH3 and HRS_TG were compared in terms of mean HR (MHR, bpm), HR standard deviation (HRSD, bpm) and HRSD error (bpm). HRS_BH3 and HRS_TG provided comparable MHR (73.0715.53 bpm vs 72.8615.57 bpm, respectively) while HRSD by HRS_BH3 was significantly lower than HRSD by HRS_TG (4.512.29 bpm vs 5.632.99 bpm, respectively; P=0.0043). HRSD error was significantly greater than zero (0.20-3.00 bpm; P=0.0043); moreover, it was strongly correlated to HRSD by HRS_TG (=0.82, P=0.0036). Thus, HRS_BH3 is appropriate only for sport applications based on MHR estimations, but not to clinical evaluations based on HRV measurements.
No takes yet. Share an insight, caveat, or question.
Nepi et al. (2016) conducted an observational in Healthy (n=10). Zephyr BioHarness 3.0 (HRS_BH3) vs. ECG-derived tachogram (HRS_TG) was evaluated on Heart rate standard deviation (HRSD) (p=0.0043). The Zephyr BioHarness 3.0 significantly underestimated heart rate standard deviation compared to the ECG-derived tachogram (4.51 vs 5.63 bpm, P=0.0043), indicating it is not reliable for clinical heart rate variability measurements.
Synapse has enriched 10 related papers. Consider them for comparative context: