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Reliability and validity of a wearable heart rate and respiratory rate sensor system
Author(s) -
Tharion William J.,
Buller Mark J.,
Karis Anthony J.,
Mullen Stephen P.
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.1175.7
Subject(s) - intraclass correlation , supine position , heart rate , treadmill , medicine , limits of agreement , physical therapy , cardiology , blood pressure , mathematics , statistics , reproducibility , nuclear medicine
Purpose: To determine if heart rate (HR) and respiration rate (RR) of the wearable Hidalgo Vital Sign Detection System (VSDS) were reliable and valid. Methods: 8 men performed activities of varying intensity; low (e.g., lying prone & supine) medium (e.g., treadmill walking) and high (treadmill running). VSDS HR and RR were compared to reference standard (RS) HR (Schiller AT‐6 ECG) and RR (SensorMedics 2900 metabolic cart). Reliability was assessed by (1) mean between trials and (2) intraclass R. Validity was assessed by (1) mean between VSDS and RS, (2) Pearson r, and (3) Bland‐Altman (BA) plots. Acceptability of VSDS of HR measures was set a priori to be within 2 bpm (low activities) and 6 bpm (high activities) and RR to be within 1 breath per min (brpm) (low activities) and 3 brpm (high activities) of RS measures. Results: HR showed no significant differences between trials. Intraclass R's ranged from 0.60 to 0.97; R for all activities: 0.88 ( p <0.01). There was no significant difference between VSDS and RS HR. RR reliability showed no differences between trials except for pushups (mean Δ = −3.1 brpm; p <0.05). Intraclass R's ranged from 0.52 to 0.97; R for all activities: 0.90 ( p <0.01). RR validity estimates showed differences between VSDS and RS (range: 1.9 brpm to − 10.4 brpm). Pearson r values ranged from 0.23 to 0.82. Conclusion: VSDS HR data was both reliable and valid. RR was reliable but did not meet the validity criterion. This work was supported by U.S. Army Medical Research and Materiel Command.