The purpose of this study was to investigate the swing techniques during the 5 different slopes which are flat lie(FL), ball up lie(BUL), feet up lie(FUL), left up lie(LUL), and right up lie(RUL). The angle of the slope was 10°. Seven well-trained mal ...
The purpose of this study was to investigate the swing techniques during the 5 different slopes which are flat lie(FL), ball up lie(BUL), feet up lie(FUL), left up lie(LUL), and right up lie(RUL). The angle of the slope was 10°. Seven well-trained male golfers(mean handicaps 1.6±0.79) volunteered for this study. Eight kinematic variables were collected from all subjects. The means and standard deviations were calculated from the variables. And the swing ratio(backswing vs downswing) was presented under the percentage of swing tempo. The results of this study were as follows. First, expert golfers had same swing tempos regardless of slope directions. The ratio between backswing and downswing was 3 : 1. Second, the speed of the clubhead on a flat lie(FL) was the greatest(C4=35.4m/s, C7=31.5m/s, 30.2m/s) than any other lies. Third, stance width of the slope lies(BUL, LUL, RUL) was wider than the FL's(mean 0.7-3.6㎝), however, FUL was narrower than the FL's(mean 2㎝). Fourth, on a FL, BUL, and FUL, the weight of right foot was 55% and the weight of left foot was 45%. But, on a LUL, the weight of right foot was 70% and the weight of left foot was 30%. On the other hand, on a RUL, the weight of right foot was 40% and the weight of left foot was 60%. Fifth, the mean differences of shoulder heights were 7-10㎝ at the FL, BUL, and FUL. On a LUL, the difference was 12-13㎝, however, on a RUL, the difference was 4-5㎝. Sixth, the angle of the both knees were about 160°-164° at the FL, BUL, FUL. On a LUL, the left knee was 5°-11° more flexed than the right knee. But, on a RUL, the right knee was 13°-16° more flexed than the left knee.