The peak power comes from the inertia of the club, not the player. The player puts out a much lower power over a longer period of time. 140j over the windup + s

The peak power comes from the inertia of the club, not the player. The player puts out a much lower power over a longer period of time. 140j over the windup + swing is probably similar to what someone like a boxer needs to put out during a single punch.