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 Rectus Femoris gait forces (top), relative muscle length (middle), and power are shown. Muscle length is expressed as percent anatomic length (hip and knee at anatomic position). Positive power (bottom) correlates with concentric muscle contractions
