Masters Thesis

The Influence of Com Translation and Vertical Jump Performance on Ground Loading Characteristics in the Golf Swing

The primary focus of golf research has investigated the kinematic and recently, the kinetic differences between low and high handicap golfers. However, research and golf instruction are not appropriately accounting for individual characteristics within golfers. Therefore, the purpose of this study was to investigate the effect of center of mass (COM) translation on ground reaction force (GRF) ratios, and the relationship between vertical jump performance and these variables. 20 Collegiate and 20 recreational golfers were recruited for this study. Full body golf biomechanics were collected and all participants completed three maximal countermovement jumps and five swings with both a 5-iron and driver. Pearson correlations were used to analyze the relationship between the vertical jump and golf swing variables. Independent t -tests were used to compare recreational and collegiate golfers. Rate of force development in the jump was correlated with the Vertical GRF ratio (p = 0.018, r = -0.548) in the 5-iron and in the driver, was correlated to the COM position and vertical GRF ratio (p = .007, r = -0.613, and p = .009, r = -0.596). COM position was correlated to the vertical GRF ratio (p = .011, r = 0.570) and ML GRF ratio was correlated to both the AP GRF and vertical GRF ratio (p = .008, r = 0.572, p = .001, r = 0.705). COM position was correlated with vertical GRF ratio (p = .000, r = 0.730). The vertical jump may be a novel approach to identifying individual differences within golfers. However, future research needs to investigate additional tests that assess force production in multiple planes in order to comprehensively evaluate preferred loading characteristics in the golf swing.

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