Abstract- No method currently exists to determine the location of the kick point during the golf swing. This study co...nsisted of two phases. In the first phase, the static kick point of 10 drivers (having identical grip and head but fitted with shafts of differing mass and stiffness) was determined by two methods; 1) a visual method used by professional club fitters and 2) an algorithm using 3D locations of markers positioned on the golf club. Using level of agreement statistics, we showed the latter technique was a valid method to determine the location of the static kick point.
In phase two, the validated method was used to determine the dynamic kick point during the golf swing. Twelve elite male golfers had three shots analysed for two drivers fitted with stiff shafts of differing mass (56 g and 78 g). Excellent between-trial reliability was found for dynamic kick point location. Differences were found for dynamic kick point location when compared to; static kick point location, as well as between-shaft and within-shaft. These findings have implications for future investigations examining the bending behavior of golf clubs, as well as being useful to examine relationships between properties of the shaft and launch parameters.
Source: J Appl Biomech. 2012 Dec 27. Joyce C, Burnett A, Matthews M.
School of Exercise and Health Sciences, Edith Cowan University, Western Australia, Australia.