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.
The period of electromyographic (EMG) activity in the ILPO at different speeds and slopes. Zero time indicates foot-down. The mean start and stop times for the EMG burst are connected with a thick bar, with thin error bars at the ends indicating ±1 s.e.m. Values are grouped by speed on the vertical axis with the slope indicated by color (0%, black; 10%, blue; 15%, green, 20%, red). The thin bars on the right indicate the mean stance times ± 1 s.e.m.
