If you kick a ball, about the most interesting way you
can analyze the result is in terms of the mechanical laws
of force and motion. The coefficients of inertia, gravity,
and friction are sufficient to determine its reaction to
your kick and the ball’s final resting place, even if you
can ‘bend it like Beckham’. But if you kick a large dog,
such a mechanical analysis of vectors and resultant
forces may not prove as salient as the reaction of the dog
as a whole. Analyzing individual muscles biomechanically likewise yields an incomplete picture of human
movement experience.
Thomas W. Myers in Anatomy Trains—Page 3