Patent ID: 7651403
Filing Date: 2010-01-26
Classification: A63B

Abstract:
1. A golf club selecting method of analyzing a behavior of a golf club during a golf swing performed with the golf club gripped by a golfer, the golf club having a shaft length of 1066 to 1219 mm, a frequency of 3.3 to 5.0 Hz, and a mass of 280 to 320 g, and selecting a golf club in accordance with the golf swing, comprising: a swing information acquiring step of obtaining time series data on a position and a direction of a grip end of the golf club during the golf swing performed by the golfer gripping the golf club by a three-dimensional position direction measurement apparatus, and calculating a movement speed of a grip position corresponding to the grip end of the golf club and a movement speed of a head position corresponding to a head portion of the golf club in an impact state immediately before a golf ball is hit with the golf club based on the time series data on the grip end of the golf club by a processing apparatus, the three-dimensional position direction measurement apparatus that includes a transmitter, a receiver, and a controller, wherein the transmitter forms a magnetic field with a known distribution regarding an intensity and a direction within a movement range of the grip end of the golf club in the golf swing, the receiver is fixed at the grip end of the golf club for sensing magnetism in the magnetic field and for outputting a signal in accordance with a three-dimensional position with respect to a predetermined reference position and a direction with respect to a predetermined reference direction, and the controller generates time series data on the grip position in a three-dimensional space and time series data on a direction, based on the signal output from the receiver when the golf swing is performed using the golf club in the formed magnetic field; and a golf club selecting step of obtaining a value by dividing the movement speed of the head position by the movement speed of the grip position, displaying the value on a screen of a display apparatus as information for selecting a golf club from a plurality of golf clubs, each golf club having a golf club shaft and each golf club shaft having a different kick point, and selecting a golf club having a golf club shaft of a high kick point from the plurality of golf clubs when the displayed value is less than 10.0, selecting a golf club having a golf club shaft of a low kick point from the plurality of golf clubs when the displayed value is 14.0 or larger, or selecting a golf club having a golf club shaft of a mid kick point from the plurality of golf clubs when the displayed value is 10.0 or larger and less than 14.0.