The purpose of this study, based on sports biomechanical methods, is to investigate the factors of club type, including driver and 7-rion club, which affected (l) ground reaction force and center of pressure, and (2) posture of swing, by calculating the kinematic and kinetic data of golf swing. Eight subjects, right-handed, 7 to 10 handicap, averaged age of 40, performed 5 swing using driver and 7-iron club, collecting the ground reaction force and 3D trajectory of attached reflected markers with two force plates and six CCD cameras. The collected data were calculated into kinetic and kinematics data for statistic significance with ANOV A. The normal ground reaction force exerted by front foot was 110% ± 6% body weight with driver, and 102% ± 7% body weight with 7-iron club. They are significantly different. The total vertical ground reaction forces exerted with driver was 128% ± 5% body weight, and 113% ± 6% body weight with 7-iron club and the both were significantly different. In conclusion, this study demonstrated the significantly effecting of clubs on the ground reaction force, and showing that it is needed for different club to take different posture of standing or to wear a spiked shoe, in order to stabilize the swing. The influence of club type on posture of swing is not obvious, but the coordination of swing motion and center of pressure is needed for achieving the efficient swing motion.
The purpose of this study, based on sports biomechanical methods, is to investigate the factors of club type, including driver and 7-rion club, which affected (l) ground reaction force and center of pressure, and (2) posture of swing, by calculating the kinematic and kinetic data of golf swing. Eight subjects, right-handed, 7 to 10 handicap, averaged age of 40, performed 5 swing using driver and 7-iron club, collecting the ground reaction force and 3D trajectory of attached reflected markers with two force plates and six CCD cameras. The collected data were calculated into kinetic and kinematics data for statistic significance with ANOV A. The normal ground reaction force exerted by front foot was 110% ± 6% body weight with driver, and 102% ± 7% body weight with 7-iron club. They are significantly different. The total vertical ground reaction forces exerted with driver was 128% ± 5% body weight, and 113% ± 6% body weight with 7-iron club and the both were significantly different. In conclusion, this study demonstrated the significantly effecting of clubs on the ground reaction force, and showing that it is needed for different club to take different posture of standing or to wear a spiked shoe, in order to stabilize the swing. The influence of club type on posture of swing is not obvious, but the coordination of swing motion and center of pressure is needed for achieving the efficient swing motion.