本研究的目的在探討不同手掌寬度者用不同球體進行罰球線定點投籃時：(1)不同手掌寬度與不同的球體對於投籃結果有無交互作用？(2)不同手掌寬度的投籃動作型式在不同的球體限制下是否有差異？以60位慣用右手的男學童為實驗參加者，平均年齡為10.9 ± 0.3歲，依手掌寬度將其分為手掌寬度最大組、手掌寬度中間組與手掌寬度最小組等三組。實驗參加者使用四種不同的球體在罰球線進行試投，每人每種球試投6次，最後以攝影機將其投籃的動作型式拍攝下來，以身體肢段分析法進行評分。以χ2百分比同質性考驗及混合設計二因子變異數分析3(手掌寬度)×4(球體種類)等方法進行統計分析。結果顯示(一)三組實驗參加者在定點投籃動作型式的差異方面：1.三組實驗參加者之間在使用排球及籃球投籃時的腳步動作型式的差異達顯著水準；2.手掌寬度最大組，手、腳及軀幹等動作成分之差異性未達顯著水準；3.手掌寬度中間組則在手部動作型式上呈現顯著的差異性；4.手掌寬度最小組則在手部動作型式與腳步動作型式之差異性達顯著水準(二)在投籃命中得分結果方面：不同手掌寬度與不同球體對實驗參加者投籃得分結果沒有交互作用。故本研究的結論為：(一) 定點投籃動作型式會受手掌寬度與不同球體種類所影響；(二)投籃命中得分結果在不同組別的實驗參加者之沒有差異。

The purpose of this study was to research that when different width of palm participants performed basketball set shooting with different balls:(1)Was there interaction effect between different width of palm and different balls for shooting scores? (2) Were there differences in shooting patterns between participants with different width of palm under different balls constrains? Sixty right-handed elementary school male students (mean age=10.9± 0.3 yrs.) served as participants. Based on the width of palm , we divided the sixty participants into three groups that were maximal width of palm group , middle width of palm group and minimal width of palm group. The participants performed set shooting on foul line with four kinds of different balls. Every participant performed set shooting with every kind of different balls for 6 times. Shooting performance was filmed and analyzed by using body component approach and scoring system. Chi-square test of homogeneity of proportions and two way mixed design ANOVA were administered for analyses. The findings were as follows: (1) The differences in set shooting patterns between three groups participants were: (a) There were significant differences in step patterns between three groups participants when they performed set shooting with volleyball and basketball. (b)There were not differences in hand patterns,
step patterns, and trunk turn patterns between four kinds of different balls when maximal width of palm group participants performed set shooting. (c) There were differences in hand patterns between four kinds of different balls when middle width of palm group participants performed set shooting. (d)There were differences in hand patterns, and step patterns between four kinds of different balls when minimal width of palm group participants performed set shooting.(2)There were not interaction effect between different width of palm and different balls for shooting scores. The results of this study were as follows:
(1) The set shooting patterns were affected by width of palm and different kinds of balls. (2)There were not differences in shooting scores between three groups participants when they performed set shooting with different kinds of balls.

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