Accuracy of Commercially Available Heart Rate Monitors in Athletes
Public ClinicalTrials.gov record NCT03612063. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Accuracy of Commercially Available Heart Rate Monitors in Athletes: A Prospective, Randomized Study
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this research is to compare four different heart rate monitors (Apple Watch Nike III,Fitbit Iconic, Garmin Vivosmart HR, Tom Tom Spark 3) to an Electrocardiograph (ECG) machine to determine the accuracy of the devices. Over the last two decades, there has been a proliferation of commercially available heart rate monitors. Elite athletes often use heart rate measurements to monitor training and fitness levels. In response, fitness companies have offered a variety of heart rate monitors to the general public. Previously, chest strap monitors that measured electrical activity were mainly used to track heart rates. More recently, wrist-worn monitors that use an optical sensor (light) to measure heart rate have gained in popularity. While the accuracy of chest strap monitors has been studied, there is currently no data concerning the accuracy of wrist-worn heart rate monitors. Assessment of the monitors' accuracy is important for subjects who rely upon the heart rate measurements to guide their athletic activity.
Study identification
- NCT ID
- NCT03612063
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 50 participants
Conditions and interventions
Conditions
Interventions
- Fitbit Iconic HR and Garmin Vivosmart HR Device
- Fitbit Iconic HR and TomTom Spark 3 Device
- Garmin Vivosmart HR and TomTom Spark 3 Device
- Fitbit Iconic HR and Apple Watch III Device
- Apple Watch III and Garmin Vivosmart HR Device
- Apple Watch III and TomTom Spark 3 Device
Device
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 23, 2018
- Primary completion
- Dec 12, 2018
- Completion
- Dec 12, 2018
- Last update posted
- Apr 9, 2019
2018
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Cleveland Clinic | Cleveland | Ohio | 44195 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03612063, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 9, 2019 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03612063 live on ClinicalTrials.gov.