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.
Scatter Plot between directly measured CRF and estimated CRF: (a) Scatter plot between directly measured CRF and estimated CRF by ACSM (b) Scatter plot between directly measured CRF and estimated CRF by FRIEND equation. Dotted line; linear regression line, Solid line; 1:1 reference line.
