Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison between the mean RR intervals (R-to-R) (ms) of the two signals in the data set derived from the smartphone IoTool application and the Polar watch V800 for Cow I over the experimental period of 27 min after artifact correction (n = 3630 measured values).
