北獅高臺(tái)左右180176;飛躍直接站腿三維運(yùn)動(dòng)學(xué)分析

1、北獅高臺(tái)左右180°飛躍直接站腿三維運(yùn)動(dòng)學(xué)分析論文隨機(jī)驗(yàn)證編號(hào)：BT528551655570IV 摘要 摘要 本文采用三維定點(diǎn)攝像方法對(duì)中國(guó)北獅運(yùn)動(dòng)員 “高臺(tái)左右 180°飛躍直接站腿”動(dòng)作進(jìn)行拍攝，獲取視頻資料，運(yùn)用運(yùn)動(dòng)學(xué)原理對(duì)技術(shù)動(dòng)作特征進(jìn)行闡述和分析。重點(diǎn)分析運(yùn)動(dòng)員不同環(huán)節(jié)中心點(diǎn)在不同動(dòng)作節(jié)點(diǎn)的位置、位移、速度和關(guān)節(jié)的角度，以明確動(dòng)作起止點(diǎn)、路徑，運(yùn)用運(yùn)動(dòng)學(xué)原理探析動(dòng)作完成技巧。最終提出適用于教學(xué)、訓(xùn)練的切實(shí)可

2、行的建議。具體實(shí)驗(yàn)操作如下： 首先，采用 200 幀/秒的頻率進(jìn)行三維定點(diǎn)拍攝，獲取視頻資料。其次，利用北京體育大學(xué)生物力學(xué)教研室周興龍教授研發(fā)的視訊視頻分析軟件對(duì)視頻數(shù)據(jù)進(jìn)行處理，得出運(yùn)動(dòng)員各環(huán)節(jié)中心點(diǎn)坐標(biāo)數(shù)據(jù)，并建立數(shù)據(jù)庫(kù)。然后，對(duì)數(shù)據(jù)應(yīng)用 Q-TOOLS、EXCEL 等軟件進(jìn)行解析、計(jì)算，根據(jù)計(jì)算結(jié)果分析運(yùn)動(dòng)員在不同階段的運(yùn)動(dòng)學(xué)特征；最后，根據(jù)分析提出有利于教學(xué)和訓(xùn)練的有實(shí)際意義的建議： 1 起跳階段獅頭運(yùn)動(dòng)員應(yīng)該下蹲到合適高度，

3、 充分利用股四頭肌和臀大肌的離心收縮，獲得地面最大反作用力；起跳時(shí)獅頭運(yùn)動(dòng)員蹬伸要充分，充分?jǐn)[動(dòng)手臂使重心產(chǎn)生向上的相對(duì)加速度；獅尾運(yùn)動(dòng)員在獅頭運(yùn)動(dòng)員蹬伸完成即將離開(kāi)地面瞬間開(kāi)始用力，增強(qiáng)動(dòng)作的連貫性，并減少能力損耗。 2 提拉階段獅頭運(yùn)動(dòng)員離開(kāi)地面后積極收腿，提高身體重心的相對(duì)高度；獅頭運(yùn)動(dòng)員肌肉用力要均勻，避免出現(xiàn)局部環(huán)節(jié)的相對(duì)加速度；獅尾運(yùn)動(dòng)員應(yīng)盡力將獅頭運(yùn)動(dòng)員拉至自己胸前，相對(duì)距離越小越好。旋轉(zhuǎn)階段獅尾運(yùn)動(dòng)員應(yīng)盡量縮短兩者之間的

4、距離；獅頭運(yùn)動(dòng)員收緊身體減小自身旋轉(zhuǎn)半徑。下落階段獅頭獅尾運(yùn)動(dòng)員都應(yīng)該伸展身體；獅尾運(yùn)動(dòng)員盡量增大兩者之間的距離。 3 連接階段需要獅頭運(yùn)動(dòng)員控制下蹲高度，做到充分利用肌肉的牽張反射，又能保證各關(guān)節(jié)能快速伸展；蹬伸過(guò)程中獅頭運(yùn)動(dòng)員應(yīng)盡量伸展，以提高中心相對(duì)高度；獅尾運(yùn)動(dòng)員下蹲不能太低，需要配合獅頭運(yùn)動(dòng)員的高度。 4 亮相階段獅頭運(yùn)動(dòng)員下蹲和蹬腿都要迅速； 獅尾運(yùn)動(dòng)員配合獅頭運(yùn)動(dòng)員下蹲和蹬伸。 關(guān)鍵詞：北獅；難度動(dòng)作；運(yùn)動(dòng)學(xué)；三維攝像；轉(zhuǎn)

5、動(dòng)慣量 北獅高臺(tái)左右180°飛躍直接站腿三維運(yùn)動(dòng)學(xué)分析論文隨機(jī)驗(yàn)證編號(hào)：BT528551655570VI best to pull the head athletes to their chests, relative distance as small as possible; In rotating stage lion tail should shorten the distance betwee

6、n them as far as possible; Lion athletes should shorten the rotation radius during rotation; In falling stage all lion tail athletes should stretch; Lion tail athletes try to expanse the distance between the h

7、ead and the tail. 3 Head athletes need to control the squat height in connection phase and not only can use muscle stretch reflexes fully, but also can ensure that each joint stretch quickly; Head athletes shou

8、ld extend as far as possible, in order to raise the center relative height in stretching phase; Lion tail athletes cannot squats too low, because the height of the athletes should apply to the head. 4 Appearance

9、 stage, head athletes crouch down and kick should be quickly; Lion tail athletes act according to lion athletes’crouching down and kicking. Key Words:Northern Lion Dance; The Difficulty Action; Kinematic