part I:

Use Motion Artifact Free ECG Devices for Validation of Heart Rate Monitors

In the following demo video about the Adinstruments Equivital:

https://www.adinstruments.com/partners/equivital

Adinstruments advertises that the Adinstruments Equivital has “Movement Artifact free ECG”. Therefore we suppose that the problems of the Movement Artifact of Adinstruments Equivital:

Comparative Analysis of the Equivital EQ02 Lifemonitor with Holter Ambulatory ECG Device for Continuous Measurement of ECG, Heart Rate, and Heart Rate Variability: A Validation Study for Precision and Accuracy

are solved, and the device can be used as reference device for sports sensor heart rate validation.

Adinstruments Equivital has only a warranty time of 3 month, as far as we know. Be aware of this fact before you buy this expensive device.

These two papers use ECG devices as reference devices:

1. Accuracy of commercially available heart rate monitors in athletes: a prospective study

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732081/

Reference device: Cardiac Science ECG device. (no motion artifact removal)

2. Validation of Polar OH1 optical heart rate sensor for moderate and high intensity physical activities

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288

Reference device: g.Nautilus. According to Nautilus, g.NAUTILUS PRO has at least motion artifact-free EEG signals. We do not know wheather g.NAUTILUS PRO also supports motion artifact-free ECG signals:

g.NAUTILUS PRO

We suppose, that the Adinstruments Equivital, the g.NAUTILUS PRO as well as high-quality ECG devices with HeartPy motion artifact removal belong to the most accurate heart rate monitoring devices on the market, and that these devices are more accurate than a Polar H10.

– There is no proof, that the Polar H10 has the “best heart rate”, as Rob ter Horst, PhD. claims on his youtube channel, which is 99.6 % correct, whatever that means. Rob ter Horst has no data which compares the Polar H10 to a motion artifact free high quality ECG device:

– There is no proof either, that the Polar H10 is a gold standard reference device, as claimed in this paper:

RR interval signal quality of a heart rate monitor and an ECG Holter at rest and during exercise

We suppose that:

1. Adinstruments Equivital

2. g.NAUTILUS PRO

3. a high-quality ECG devices with HeartPy motion artifact removal

are devices which are more suitable as standard reference devices for sports sensor valdiation than the Polar H10 chest strap.

Adinstruments Equivital has noise and movement artifact-free ECG, but only 2 Channel ECG