Figure 1.
Acute changes in (a) root mean square of successive differences (RMSSD), (b) low Frequency (LF), (c) high Frequency (HF), and (d) LF/HF. *, statistically significant difference to baseline (p < 0.05).
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.