The Effects of the Deflection Point and Shaft Mass on Swing and Launch Parameters in the Golf Swing
International Society of Biomechanics in Sports
Faculty of Computing, Health and Science
School of Exercise and Health Sciences / Centre for Exercise and Sports Science Research
This study determined whether a higher dynamic deflection point (DDP) was evident when using a driver fitted with a stiff shaft of greater mass and whether between-shaft differences were evident in swing and launch parameters. Twelve elite male golfers had three shots analysed for each of two drivers fitted with “stiff” shafts of different mass (56 g and 78 g). Six swing and launch parameters were measured by a real-time launch monitor and the (DDP) was measured using a motion analysis system. Between-shaft differences were evident for the DDP at maximum, but not at ball impact. Between-shaft differences in swing and launch parameters for the heavier shaft resulted in; lower launch angles (p<0.001), increased spin rates (p<0.001) and steeper attack angles (p<0.001). The findings show the importance of DDP and optimising swing and launch parameters.
Joyce, C. , Burnett, A. F., & Herbert, S. (2012). The Effects of the Deflection Point and Shaft Mass on Swing and Launch Parameters in the Golf Swing. Proceedings of Conference of the International Society of Biomechanics in Sports. (pp. 88-91). Melbourne, Australia. International Society of Biomechanics in Sports. Available here