著者
鬼澤 陽子 小松崎 敏 吉永 武史 岡出 美則 高橋 健夫
出版者
社団法人日本体育学会
雑誌
体育學研究 (ISSN:04846710)
巻号頁・発行日
vol.53, no.2, pp.439-462, 2008-12-10

The purpose of this study was to verify the effectiveness of modified basketball games based on on-the-ball decision-making and off-the-ball movement. Two types of numerically modified basketball games, "3 on 2" and "3 on 3", were played by two 6th grade elementary PE classes. Twenty-four students participated in the 3 on 2 games, and 28 students in the 3 on 3 games. All games were videotaped, and the Game Performance Assessment Instrument (GPAI) was used for data analysis. This instrument allows counting of the frequency of on-the-ball decision-making and off-the-ball support movement, and assists in judging the performance of students in situations such as shooting, passing, ball-keeping, and supporting, as to whether or not these are appropriate. The main findings are summarized as follows: 1. The number of students who experienced on-the-ball decision-making and off-the-ball support situations, and the average frequencies of these experiences, were higher in the 3 on 2 games than in the 3 on 3 games. 2. In the 3 on 2 games, the numbers of students who performed appropriate passing, ball-keeping, and support were significantly higher than in the 3 on 3 games (p<.001). 3. The rates of appropriate shooting, passing, ball-keeping, and support were significantly higher in the 3 on 2 than in the 3 on 3 games (p<.01). The 3 on 2 basketball game was shown to be very effective, allowing upper elementary grade students to learn appropriate on-the-ball decision-making and off-the-ball support movement, in comparison with the 3 on 3 game.
著者
山本 章
出版者
社団法人日本体育学会
雑誌
体育學研究 (ISSN:04846710)
巻号頁・発行日
vol.17, no.1, pp.43-51, 1972-05-25

本研究は1万m走による尿中17-KS排泄量の変化を調べたものである. 被験者は21才の健康男子1名であり, まず平常日, 次に負荷日の尿中17-KS排泄量の日内変動を調べた. 負荷は11時の採尿後実施した. 採尿は7時に完全排尿後, 7-11時, 11-15時, 15-19時, 19-23時, 23時〜翌日7時とし, 別々のフラスコにとり, 5〜10℃の冷暗所に保存した. 尿中17-KS測定はDrekter法に準じ, 48時間以内に終了した. 測定結果は以下の通りである. 1) 平常日の尿中17-KS排泄量は7-11時或いは11-15時尿で最高値を示し, 15-19時尿で減少し, 19-23時尿でやや増加したが, 23-7時尿で最低値を示した. 2) 負荷日では7-11時尿で最高値を示し, 以後次第に減少した. 3) 平常日と負荷日を比較すると, 全般的に負荷日の方が高値を示し, 特に7-11時, 15-19時, 23-7時尿で著しかった. 以上の結果から, 1万m走の肉体的, 精神的負荷が尿中17-KS量を増加させると言えよう.