Patent ID: 8398504

Claim:
A shaft selection assist apparatus comprising: storage means for storing recommended shaft information indicating a correspondence between measurement parameters obtained upon a test strike with a golf club to which a predetermined reference shaft is attached, and recommended shafts among shafts of a plurality of types; acquisition means for acquiring measurement results of the measurement parameters associated with a test strike actually made by a user with the golf club; selection means for selecting a recommended shaft by referring to the recommended shaft information based on the measurement results acquired by said acquisition means; and output means for outputting information indicating the recommended shaft selected by said selection means, wherein the measurement parameters include a vertical launch angle of a struck ball and a back spin amount on the struck ball, the recommended shaft information stored in said storage means comprises information which specifies recommended shafts based on a relationship between a shaft rigidity distribution, and the vertical launch angle and the back spin amount, and the recommended shaft information stored in said storage means specifies as recommended shafts a shaft which has a small rigidity difference on a proximal side if the vertical launch angle is relatively large, a shaft which has a large rigidity difference on the proximal side if the vertical launch angle is relatively small, a shaft which has a large rigidity difference on a distal side if the back spin amount is relatively large, and a shaft which has a small rigidity difference on the distal side if the back spin amount is relatively small.