Clinical Trial: Smartphone Camera Measurement of Breathing-Related Heart Rate Variability Compared With ECG in Healthy Adults

U.S., Nov. 7 -- ClinicalTrials.gov registry received information related to the study (NCT07922161) titled 'Smartphone Camera Measurement of Breathing-Related Heart Rate Variability Compared With ECG in Healthy Adults' on Oct. 27.

Brief Summary: This study examines how accurately a smartphone can measure the rhythmic rise and fall of heart rate that occurs with breathing (respiratory heart rate variability).

Healthy adult volunteers attend one laboratory visit of about 90 minutes in Seoul, Republic of Korea. While seated, each participant breathes freely for 5 minutes, then follows audio-guided breathing at seven slow rates between 4 and 7 breaths per minute in random order and finally at 15 breaths per minute, with 2-minute rests between...