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.
—Schematic illustration of the margin of stability (MoS) and the extrapolated center of mass (XCOM) at heel strike. MoS represents the mediolateral distance between the XCOM and the ankle marker, XCOM represents the range that COM does not exceed at any timing under the assumption of the inverted pendulum model, Vx is the mediolateral velocity of the COM, g is the gravitational constant (9.81 m/s2), l is the pendulum length (the height of the COM).
