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.
Mean EMG activity of the vastus medialis (a), rectus femoris (b), and vastus lateralis (c) during the flexion and extension phases of the SLS task in the EO and EC conditions. The vertical bars represent the average activity on days 1 (dark bar) and 4 (white bar). The y-axis represents muscle activity as a percent of maximum voluntary isometric contraction (MVIC). *Indicates significant difference from day 1 when conditions are combined.
