Abstract
We aim to clarify balancing mechanism of the golf swing. In the golf swing, inertial and centrifugal force are applied to the player's body which have bad effect on balance. In such case, golf players carry out weight shift to keep balance. At first, we couduct dynamic analysis of the swing using the double pendulum model for arm al club in order to calculate inertial and centrifugal force and calculate the trajectory of the center of pressure due to the swing. And, we calculate the effect of the weight shift on the trajectory of the center of pressure using one mass model of the trunk of the player. Next, we carry out an experiment to measure the trajectory of center of pressure during golf swing by using the force plate. Comparing the calculation results and the experimental results, we discuss on the balancing mechanism of the golf swing. Through the discussion, it can be seen that the acceleration pattern of the human trunk plays very important role to cancel the effect of the inertial and centrifugal force of the swing and keep balance.
