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.
Peak of 30% isometric leg exercise in untrained and exercise-trained heart failure patients. A: muscle sympathetic nerve activity (MSNA) total activity (a.u.). B: MSNA frequency (bursts/min). C: MSNA incidence [bursts/100 heartbeats (HB)]. *P < 0.05 vs. pre within group. †P < 0.05 vs. untrained. ‡P < 0.05 vs. rest.
