49. In the swimming competition, what kind of swimming posture can be at the start and
turns, a swimmer is permitted one or more leg kicks and one arm pull under the water,
which must bring him to the surface? It shall be permissible for a swimmer to be
completely submerged for a distance of not more than 15 meters after the start and after
each turn. When by that point, the head must have broken the surface. The swimmer
must remain on the surface until the next turn or finish.
(A) Backstroke
(B) Breaststroke
(C) Freestyle
(D) Butterfly
答案:登入後查看
統計: A(94), B(114), C(70), D(126), E(0) #3112033
統計: A(94), B(114), C(70), D(126), E(0) #3112033
詳解 (共 3 筆)
#6094194
※ 蛙式
出發及轉身後的手部動作開始,蛙泳參賽者的身體必須保持俯臥姿勢,雙肩亦要與水面平行;雙手必須在胸前及在水面下划前及划後,且除了出發後的划水或轉身後的划水,手部不能超越臀部。規則亦不容許有自由式及蝶式的腿部打水動作。在轉身及完成賽事時,雙手必須同時觸及池端(水面上或水面下均可)。無論任何時間,雙手及雙足的動作必須對稱。
※ 蝶式
蝶式參賽者的雙手必須同時在水面上前移及在水面下划水。出發及轉身後,選手的身體必須保持俯臥,雙肩成水平,雙腿的動作亦要是同時進行。規則雖然容許雙足上下同時擺動,雙腿及雙足亦不須同一水平,但雙腿或雙足交替打水的動作卻是不允許的。在轉身及完成比賽時,參賽者的雙手必須同時觸及池端(水面上或水面下均可),且雙肩要與水面平行。出發及轉身後,泳手在浮上水面前,腳部可作一或多次的踢腿,但雙手只可有一次划水動作。
資料來源:https://www.tpenoc.net/sport/aquatic-swimming/
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