1. Validation of a Standalone Smartphone Application for Measuring Heart Rate Using Imaging Photoplethysmography
- Author
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Ming-Zher Poh and Yukkee C Poh
- Subjects
Adult ,Male ,medicine.medical_specialty ,0206 medical engineering ,Health Informatics ,02 engineering and technology ,030204 cardiovascular system & hematology ,Smartphone application ,Electrocardiography ,03 medical and health sciences ,0302 clinical medicine ,Health Information Management ,Heart Rate ,Photoplethysmogram ,Heart rate ,medicine ,Humans ,Photoplethysmography ,Aged ,Measure heart rate ,Aged, 80 and over ,Pulse (signal processing) ,business.industry ,Reproducibility of Results ,General Medicine ,Middle Aged ,Mobile Applications ,020601 biomedical engineering ,Telemedicine ,Intensity (physics) ,Pulse rate ,Reference measurement ,Physical therapy ,Female ,Smartphone ,business ,Environmental Monitoring - Abstract
The aim of this study was to determine the accuracy of a freely available smartphone application, Cardiio app (Cardiio, Inc., Cambridge, MA), to measure heart rate from the finger or face using imaging photoplethysmography, by comparing against an FDA-cleared pulse oximeter at rest, and after moderate to vigorous exercise.A total of 40 healthy adults participated in this study. Participants engaged in a period of rest, followed by 3 min of moderate to vigorous intensity cycling on a stationary bicycle. Heart rate measurements were obtained from both the finger and face of participants using the Cardiio app at rest, immediately after exercise, 1-2 min after exercise, and 2-3 min after exercise. Concurrent heart rate readings using an FDA-cleared finger pulse oximeter served as the reference measurement.There was a very strong agreement between heart rate measurements obtained using the Cardiio app and the pulse oximeter, both at rest (r = 0.99 for finger, r = 0.97 for face) and after exercise (r = 0.99 for finger, r = 0.97 for face). At rest, the accuracy of the Cardiio app was ±1.58 beats per minute (bpm) (or ±2.27%) using the finger mode and ±2.28 bpm (or ±3.17%) for the face mode, compared to the pulse oximeter. After moderate to vigorous exercise, the accuracy of the Cardiio app was ±2.97 bpm (or ±2.79%) using the finger mode and ±5.31 bpm (or ±4.50%) for the face mode, compared to the pulse oximeter.The Cardiio app provided accurate heart rate measurements from the finger and face, both at rest and after exercise.
- Published
- 2017
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