不同投擲方法對女子壘球準確度及距離之影響

Effect of Different Pitching Approaches on Accuracy and Distance in Females Softball Players

10.6222/pej.0021.199606.2116

呂欣善(Shin-Shan Lu)；王琦正(Chin-Chang Wang)；陳相榮(Shiang-Rong Chen)

壘球 ； 投擲方法 ； 準確度 ； 投擲距離 ； Softball ； Pitching approaches ； Occuracy ； Ball-passing distance

體育學報

21期（1996 / 06 / 01）

171 - 182

繁體中文

The purpose was to examine the effect of different pitching approaches on accuracy and distance of ball-passing, and the relationship between upper body strength and accuracy and pitching distance invar sit softball players. Subject were females (N=13) and two of them were lefthanders. Physical characteristics were age(18.73±1.91 yrs),height(159.10±5.41 cm),weight(57.38±8.74 kg),BMI(22.17±2.24 kg/M^2),percent body fat (22.31±4.87%), fat free weight(43.50±4.68 kg).Absolute grip and back strength were 31.03±3.61nd 89.99±12.85 kg, respectively. Relatie grip and back strength were 0.55±0.07 and 1.58±0.21 kg/kg body weight, respectively. Sit-and-reach for 30and 60 second were 21.55±2.61 and 37.45±6.62 times, significant difference (p＜0.01) and interaction (p＜0.01) were found in pitching approaches and distance. Post hoc analysis indicated that higher accuracy in over shoulder pitching in 8,12,15,and 18 meter distance than low and pitching (p＜0.05). A significant decrease accuracy with pitching distance (p＜0.05) was found. Results showed that factors influence pitching accuracy including (1) most softball players use over shoulder pitching in longer distance pitching for accurate control of passing ball; (2) same passing accuracy in low hand toss and over shoulder during shorter distance pitching indicate a lower requirement in muscle strength and ball control during ball passing; (3) pithcing approaches and control methods is related to training level and types.

The purpose was to examine the effect of different pitching approaches on accuracy and distance of ball-passing, and the relationship between upper body strength and accuracy and pitching distance invar sit softball players. Subject were females (N=13) and two of them were lefthanders. Physical characteristics were age(18.73±1.91 yrs),height(159.10±5.41 cm),weight(57.38±8.74 kg),BMI(22.17±2.24 kg/M^2),percent body fat (22.31±4.87%), fat free weight(43.50±4.68 kg).Absolute grip and back strength were 31.03±3.61nd 89.99±12.85 kg, respectively. Relatie grip and back strength were 0.55±0.07 and 1.58±0.21 kg/kg body weight, respectively. Sit-and-reach for 30and 60 second were 21.55±2.61 and 37.45±6.62 times, significant difference (p＜0.01) and interaction (p＜0.01) were found in pitching approaches and distance. Post hoc analysis indicated that higher accuracy in over shoulder pitching in 8,12,15,and 18 meter distance than low and pitching (p＜0.05). A significant decrease accuracy with pitching distance (p＜0.05) was found. Results showed that factors influence pitching accuracy including (1) most softball players use over shoulder pitching in longer distance pitching for accurate control of passing ball; (2) same passing accuracy in low hand toss and over shoulder during shorter distance pitching indicate a lower requirement in muscle strength and ball control during ball passing; (3) pithcing approaches and control methods is related to training level and types.