[1]石 磊,陈 亮.跳远前旋角动量研究[J].南京师大学报(自然科学版),2014,37(02):140.
　Shi Lei,Chen Liang.Study on the Angular Momentum of Forward Rotation of the Long Jump[J].Journal of Nanjing Normal University(Natural Science Edition),2014,37(02):140.
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跳远前旋角动量研究()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第37卷
期数:
2014年02期
页码:
140
栏目:
体育学
出版日期:
2014-06-30

文章信息/Info

Title:
Study on the Angular Momentum of Forward Rotation of the Long Jump
作者:
石 磊1; 陈 亮2
(1. 天津师范大学体育科学学院,天津300387) (2. 天津体育学院运动生物力学实验室,天津300381)
Author(s):
Shi Lei1; Chen Liang2
(1. School of Sports Sciences,Tianjin Normal University,Tianjin 300387,China) (2. Biomechanics of Sports Laboratory,Tianjin University of Sports,Tianjin 300381,China)
关键词:
跳远; 起跳; 前旋; 角动量
Keywords:
long jump; take-off; forward rotation; angular momentum
分类号:
G823. 3
文献标志码:
A
摘要:
运用录像解析法对跳远运动员起跳过程中导致身体前旋角动量的变化进行定量分析. 研究发现,运动员着板—垂直支撑阶段由于制动力的作用,使人体产生向前翻转的角动量,且增长幅度较大. 通过垂直支撑面后制动力转变为动力,由于偏心力矩的作用,角动量出现一定的增加或减小,但幅度较小;运动员的实际成绩和理论成绩的差值与离板时身体前旋角动量成正相关,说明减小起跳离板时的前旋角动量有助于维持身体在空中的平衡,从而能够更有效地利用身体质心抛物线所能达到的距离,提高跳远成绩.
Abstract:
Based on the quantitative analysis towards the changing characteristics of the angular momentum when the long jumpers are turning around the centre of mass horizontal axis in the process of the take-off by video analysis method,the study finds that influenced by the breaking force,the body gets the angular momentum of turning forward in the stage from touching down to the vertical support in long jump,and the rate of growing is very large. After passing through the vertical support surface,the breaking force changes to the motivate power,as it is affected by the moment of eccentric force,the angular momentum increases or decreases,but in a small range;the difference between the actual achievement and theory achievement is positively related to the plate body of spin angular momentum,which shows that the reducing the take-off from the board before the spin angular momentum helps to maintain the body in balance in the air,so that atheletes can improve performance by making more effective use of the achievng distance of body mass parabola.

参考文献/References:

[1]陈志伟,侯曼. 跳远角动量的计算[J]. 天津体育学院学报,2001(12):58-60.
[2] 金季春. 运动生物力学高级教程[M]. 北京:北京体育大学出版社,2007,9:426-427.
[3] 骆建. 跳远运动员起跳的旋转特点及起跳能力与腾空技术[J]. 成都体育学院学报,2004(1):47-50.
[4] 《运动生物力学》教材编写组. 运动生物力学[M]. 北京:高等教育出版社,2000:252.
[5] 体育院校成人教育协作组《运动生物力学》教材编写组. 运动生物力学[M]. 北京:人民体育出版社,2003:185.
[6] Geoffrey·Dyson. 田径运动力学[M]. 北京:人民体育出版社,1989:170.

备注/Memo

备注/Memo:
收稿日期:2013-04-08.
通讯联系人:石磊,讲师,研究方向:田径运动教学与训练. E-mail:shileitjsd@163. com
更新日期/Last Update: 2014-06-30