Smartphone-Based Use of Phonocardiography Technique for Estimating Heart Rate and Heart Rate Variability: Performance Study

NCT ID: NCT06848179

Last Updated: 2025-02-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-03-31

Study Completion Date

2025-07-31

Brief Summary

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This study aims to investigate the use of heart sound recordings, or phonocardiograms, recorded with smartphones' built-in microphones and accessory microphones to estimate heart rate (HR) and heart rate variability (HRV). HR refers to the number of heart beats per minute, while HRV refers to the variation in the intervals between heart beats.

Participants will have their heart sounds (phonocardiograms) recorded before and after exercise, and electrocardiogram (ECG) and photoplethysmogram (PPG) data recorded before, during, and after exercise to induce a wide range of HR.

Researchers will match the phonocardiograms, ECG, and PPG data to create a database for use in future training and testing of algorithms (including artificial intelligence (AI)).

Detailed Description

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Conditions

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Exercise

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Healthy Participants

Participants deemed ready for physical activity by the Physical Activity Readiness Questionnaire (PAR-Q)

Computer algorithms

Intervention Type DIAGNOSTIC_TEST

Collection of computer algorithms called ausculto® that is designed to perform heart sound analysis to estimate heart rate and heart rate variability

Exercise

Intervention Type BEHAVIORAL

Participants will be requested to exercise to raise their HR over the resting range while heart-related physiological signals are collected.

Interventions

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Computer algorithms

Collection of computer algorithms called ausculto® that is designed to perform heart sound analysis to estimate heart rate and heart rate variability

Intervention Type DIAGNOSTIC_TEST

Exercise

Participants will be requested to exercise to raise their HR over the resting range while heart-related physiological signals are collected.

Intervention Type BEHAVIORAL

Other Intervention Names

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ausculto® Vitogram®

Eligibility Criteria

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Inclusion Criteria

* With no tattoos on their body where a smartwatch will be placed

Exclusion Criteria

* Not ready to undertake physical activity as assessed by the Physical Activity Readiness Questionnaire (PAR-Q) derived from the Canadian Society for Exercise Physiology
* Implanted active medical devices in the torso, such as pacemakers and defibrillators
* Failure to collect baseline heart sound time series from ECG or both smartphone and auscultation pin before exercise
Minimum Eligible Age

18 Years

Maximum Eligible Age

69 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Laboratory of Data Discovery for Health

UNKNOWN

Sponsor Role collaborator

The University of Hong Kong

OTHER

Sponsor Role lead

Responsible Party

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Dr. Joshua Wing-Kei Ho

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Central Contacts

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Joshua Ho, Ph.D.

Role: CONTACT

+852 3917 9512

Other Identifiers

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AUSC-HR

Identifier Type: -

Identifier Source: org_study_id

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