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http://dx.doi.org/10.5103/KJSB.2015.25.2.149

Correlation Analysis of The X-Factor, X-Factor Stretch and Swing-Related Factors during Drive Swing  

Lee, Kyung-Hun (Division of Sports Science, College of Science & Technology, Konkuk University)
Kwon, Moon-Seok (Division of Sports Science, College of Science & Technology, Konkuk University)
Lim, Young-Tae (Division of Sports Science, College of Science & Technology, Konkuk University)
Publication Information
Korean Journal of Applied Biomechanics / v.25, no.2, 2015 , pp. 149-155 More about this Journal
Abstract
Purpose : Recently, many researchers and golf coachers demonstrated that X-factor and X-factor stretch had a co-relationship with driving distance. However, its relationship is still controversial and ambiguous. Thus, the aim of this study was to examine the relationship among X-factor, X-factor stretch and swing-related factors, including driving distance in elite golfers. Method : Seventeen male elite golfers (handicap: ${\leq}4$) with no history of musculo-skeletal injuries participated in the study. Thirty spherical retro-reflective markers were placed on including the middle point of PSIS, the right/left ASIS, the right/left lateral acromion of the scapula, driver head and shaft grip. All motion capture data was collected at 100Hz using 6 infrared cameras. Carry distance, club speed, ball speed, smash factor, launch angle, and spin rate were collected from radar-based device, TrackMan. Results : Pearson's correlation coefficient method was used to find the correlations among X-factor, X-factor stretch and swing-related factors. Positive correlations between driving distance and other swing-related factors which include club speed(r=.798, p<.001), and ball speed(r=.948, p<.001) were observed. In contrast to the swing-related factors, X-factor and X-factor stretch had no relationship to driving distance. Conclusion : These results indicate that X-factor and X-factor stretch are not key regulators in driving distance.
Keywords
X-factor; X-factor Stretch; Driving Distance; Impact Factors;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Kostis, P., & Midland, G. (2006). Revealed: The Secret of the New X-factor . Golf Magazine.
2 Lee, K. T. (2001). Practical Improvements Distance 350 Yards. Seoul : Samho MEDIA.
3 Martino, R., & Wade, D. (2002). The PGA Manual for Golf. New York : Dorling Kindersley.
4 McLean, J. (1992). Wide the Gap. Golf Magazine, December, 49-53.
5 McLean, J., & Andrisani, J. (1997). The X-factor Swing. New York:Harper Collins Publishers, Ins.
6 M. McTigue, S. Lamb, R. Mottram & F. Pirozzolo. (1994). Spine and hip motion analysis during the golf swing, in A. Cochran and M. Farrally (eds), Science and Golf ll: Proceedings of the World Scientific Congress of Golf, E & FN Spon, London, 50-58.
7 Park, B. Y., & Jo, S. W.(2004). The study on weight training for increasement of ball carry in golf driver shot. Korea Sport Research, 11, 1745-1755.
8 Penner, A. R. (2001). The physics of golf: The optimum loft of a driver. American Journal of Physics, 69(5), 563-568.   DOI
9 Son, J. Y. (2007). Analyses of Muscular Power, Distance, and Electromyographic Muscle Activities of Golf Players based on Different Training Programs. Unpublished Master's Thesis, Chung-Ang University.
10 Theriault, G., & Lachance, P. (1998). Golf injuries: an overview. Sports Medicine, 26(1), 43-57.   DOI
11 Winter, D. A. (1990). Biomechanics and Motor control of Human movement. 2nd Edition. New York: John Wiley & Sons. Inc.
12 Wiren, G. (1990). PGA Teaching Manual: The art and science of golf instruction. Jenison, MI: PGA of America.
13 Abdel-Aziz, Y. I., & Karara, H. M. (1971). Direct Linear Transformation from Comparator Coordinates into Object Space Coordinates in Close-Range Photogrammetry. Paper presented at the Proceedings of the Symposium on Close-Range Photogrammetry, Falls Church, VA.
14 Broer, M. R., & Zernicke, R. F. (1973). Efficiency of Human Movement. Philadelphia: Saunders.
15 Burden, A. M., Grimshaw, P. N., & Wallace, E. S. (1998). Hip and shoulder rotations during the golf swing in sub-10 handicap players. Journal of Sports Sciences, 16, 165-176.   DOI
16 Chang, J. K. (2005a). A study on the effective X-Factor. Korean Journal of Sport Biomechanics, 15, 153-159.   DOI
17 Choi, M. C., Lee, K. K., Son, J. H., & Lim, Y. T. (2010). Comparison of X-factor and X-factor stretch from elite golfers in Korea. Korean Society of Golf Studies, 4, 1-4.
18 Chang, J. K. (2005b). The effect of X-Factor in club head speed. The Korean Journal of Physical Education, 44, 431-438.
19 Cheetham, P. J., Martin, P. E., Mottram, R. E., & St Laurent, B. F. (2001). The Importance of Stretching the "X-Factor" in the downswing of golf: The "X-Factor Stretch." In Thomas P. R.(Eds.), Optimizing performance in golf. Brisbane, Australia: Australia Academic Press.
20 Chen, S. C., Davis, J. M., Nguyen, R. M., & Smith, S. H. (2005). Effects of fluid replacement on mental and physical function during a simulated golf match. Medicine Science Sports Exercise, 37(5), 445-446.
21 Choi, W. J., Park, W. H., & Hong, C. K. (2003). The effect of the fitness exercise program for 10 weeks on the golf driver-shot. Journal of Sport and Leisure Studies, 19, 1467-1474.
22 Farrally, M. R., Cochran, A. J., & Crews, D. J. (2003). Golf science research at the beginning of the twenty-first century. Journal of Sports Science, 21, 753-765.   DOI
23 Gluck, G. S., Bendo, J. A., & Spivak, J. M. (2008). The lumber spine and low back pain in golf: A Literature review of swing mechanics and injury prevention. The Spine Journal, 8, 778-788.   DOI
24 Hume, P. A., Keogh, J., & Reid, D. (2005). The role of biomechanics in maximizing distance and accuracy of golf shots. Sports Medicine, 35(5), 429-449   DOI
25 Kim, C. W. (2009). A case study of X-factor in the golf swing analysed by the level and the age. The Korean Journal of Sport Science, 18, 1357-1366.