An official website of the United States government
Here's how you know
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.
Individual (open) and group mean (black) data for VE/VCO2 ratio in normal (circle) and HF (triangle) patients at submaximal exercise. * Significant difference between control and HF group (p<0.01).