| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 107 === The purpose of this study was to explore the grip force performance at different distances during putting stroke. Method: Twenty-one golfers (11 professionals and 10 novices) were recruited and asked for executing each five putting to reach 1, 2 and 3 m target distance as accurately as possible. Putting motions were recorded by JVC video with a LED light and grip pressure measurement sensor (150 Hz) placed on two hands, allowing the force output of all regions of the hands to be measured. Back swing, forward swing, and following period were determined by Kown3D analysis software. The success rate (%), the grips force trace and the coefficient of variation during the putting tasks were measured and showed by table or chart. Two-way Mixed Design ANOVA was performed to identify significant effects of the grip force among 1, 2 and 3 meters target distances and between elite golfers group and beginners group. The statistical significance was set at α = .05. Internal Consistency Coefficient (ICC) represented the reliability of measured variables. Results: Lower average grips forces, peak forces, and grips forces in all swing and following periods were found in elite golfers during putting tasks. Both elite golfers and beginners group had a greater grips pressure at 3m target distance than 2m and 1m (3m>2m>1m). The average coefficient of variation of hands grip forces in both groups were lower than 0.20, especially during forward swing period around 0.07. In addition, all parameters during forward swing period were highly correlated (Crobach’s α=0.84-0.99), expect the elite golfers putting at 3m (Crobach’s α=0.61). Conclusion: The grip force trace among 1 to 3 m distance was repeatable across putting strokes for each golfer but between golfers was inconsistent. Dominant forces appeared to arise primarily from the left hand, and the peak grips force was generated at ball impact in the putting tasks.
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