The knee allows good motion and no pain.

In leagues that allow forward motion, the moving player(s) cannot cross the line of scrimmage, or else it is a false start.

The unique light design allows extremely realistic motion.

It could read the player's physical movements and was the first controller to allow full-body motion sensing.

This would allow perpetual motion, a notion which he abhorred.

The hexapod known from flight simulators allows motion with six degrees of freedom.

These tracks are to allow continuous motion of the traveler across the western end of the main span.

To allow motion, different bones are connected by joints.

Unlike the other data, this didn't allow participation or motion.

The legs are just flexible enough to allow side-to-side motion, which helps absorb the stress of waves and wind.