Why the study?
Ambulatory devices offer mobile assessment of cardiac activity outside the laboratory, but it is critical to determine whether this mobility compromises data quality.
Does the Empatica E4 wristband device accurately measure HRV compared to traditional ECG across different physical conditions?
Comparison
Empatica E4 wristband device vs traditional wired ECG measures across various conditions
Design
Validation and method comparison study
Authors
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E4's low reliability versus Holter cautions against routine ambulatory HRV use; leaves open need for device-specific validation protocols.
Does the Empatica E4 wristband device accurately measure HRV compared to traditional ECG across different physical conditions?
Photoplethysmography-based wristband devices like the Empatica E4 are severely compromised by motion artifacts in most in-vivo conditions, requiring careful error detection when used for HRV measurement.
Ryan et al. (2019) studied this question.
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