By:  Paul Arrington, MD

During a match, volleyball coaches call time out for a variety of reasons.  One of the most common reasons is to stop the other team’s “momentum.”  This is commonly understood to be that the other team is scoring a run of points.  It is thought that by causing a break in the action, the coach can change the “momentum” in his team’s favor.  Although most coaches think that calling time out is successful in stopping the other team’s “momentum”, has the validity of this concept ever been evaluated critically? Continue Reading