The normal adult shape of a ball and socket are a result of all factors, including normal forces of the ball in the socket, being within «normal» limits during development. (globalvetspecialists.org)
Three that anything outside of the historically normal forcings can be attributed to human produced CO2. (wattsupwiththat.com)
The 2 - minute rest period may have allowed for a reduction in deep mechanoreceptor activation, leading to a restoration of the H - reflex, allowing for normal force production. (journals.lww.com)