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.
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