TY  - JOUR
A1  - Helmer, Philipp
A1  - Hottenrott, Sebastian
A1  - Rodemers, Philipp
A1  - Leppich, Robert
A1  - Helwich, Maja
A1  - Pryss, Rüdiger
A1  - Kranke, Peter
A1  - Meybohm, Patrick
A1  - Winkler, Bernd E.
A1  - Sammeth, Michael
T1  - Accuracy and Systematic Biases of Heart Rate Measurements by Consumer-Grade Fitness Trackers in Postoperative Patients: Prospective Clinical Trial
JF  - Journal of Medical Internet Research
N2  - Background: Over the recent years, technological advances of wrist-worn fitness trackers heralded a new era in the continuous monitoring of vital signs. So far, these devices have primarily been used for sports.
Objective: However, for using these technologies in health care, further validations of the measurement accuracy in hospitalized patients are essential but lacking to date.
Methods: We conducted a prospective validation study with 201 patients after moderate to major surgery in a controlled setting to benchmark the accuracy of heart rate measurements in 4 consumer-grade fitness trackers (Apple Watch 7, Garmin Fenix 6 Pro, Withings ScanWatch, and Fitbit Sense) against the clinical gold standard (electrocardiography).
Results: All devices exhibited high correlation (r≥0.95; P<.001) and concordance (rc≥0.94) coefficients, with a relative error as low as mean absolute percentage error <5% based on 1630 valid measurements. We identified confounders significantly biasing the measurement accuracy, although not at clinically relevant levels (mean absolute error<5 beats per minute).
Conclusions: Consumer-grade fitness trackers appear promising in hospitalized patients for monitoring heart rate.
KW  - Withings ScanWatch
KW  - health tracker
KW  - smartwatch
KW  - internet of things
KW  - personalized medicine
KW  - photoplethysmography
KW  - wearable
KW  - Garmin Fenix 6 Pro
KW  - Apple Watch 7
KW  - Fitbit Sense
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-299679
VL  - 24
IS  - 12
ER  - 
TY  - JOUR
A1  - Düking, Peter
A1  - Fuss, Franz Konstantin
A1  - Holmberg, Hans-Christer
A1  - Sperlich, Billy
T1  - Recommendations for assessment of the reliability, sensitivity, and validity of data provided by wearable sensors designed for monitoring physical activity
JF  - JMIR Mhealth and Uhealth
N2  - Although it is becoming increasingly popular to monitor parameters related to training, recovery, and health with wearable sensor technology (wearables), scientific evaluation of the reliability, sensitivity, and validity of such data is limited and, where available, has involved a wide variety of approaches. To improve the trustworthiness of data collected by wearables and facilitate comparisons, we have outlined recommendations for standardized evaluation. We discuss the wearable devices themselves, as well as experimental and statistical considerations. Adherence to these recommendations should be beneficial not only for the individual, but also for regulatory organizations and insurance companies.
KW  - internet of things
KW  - activity tracker
KW  - data mining
KW  - load management
KW  - physical activity
KW  - smartwatch
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-176202
VL  - 6
IS  - 4
ER  -