共查询到20条相似文献，搜索用时 609 毫秒
1.
运用两台日产松下NV-MD9000数码摄像机对6名优秀散打运动员的鞭腿动作进行同步拍摄,采用美国ARIEL三维图像解析系统对其技术动作进行解析,从而得到我国男子优秀散打运动员鞭腿进攻肢体的速度与位移特征,以期为鞭腿动作的教学、训练提供理论依据。 相似文献
2.
本文运用ARIEL／APAS三维图像解析系统对优秀乒乓球运动员反手台内侧拧技术动作进行了三维立体拍摄和解析,对乒乓球反手台内侧拧技术动作进行系统的运动学分析,揭示了反手台内侧拧技术的运动学特征与规律,为台内反手侧拧动作技术教学、训练、评价、诊断提供理论参考。 相似文献
3.
运用两台日本松下MD-9000数码摄像机对6名优秀散打运动员鞭腿动作进行同步拍摄,采用美国ARIEL系统进行三维图像解析,从运动学的角度揭示我国优秀男子散打运动员鞭腿动作支撑腿和进攻腿髋、膝关节速度和角度变化特征,以期为鞭腿技术动作的教学、训练提供科学依据. 相似文献
4.
棒球投手投球技术生物力学分析 总被引：1，自引：0，他引：1
以2004年全国棒球联赛上场一线投手为研究对象,选取两名外援及三名优秀国手为优秀组,上海队投手的五名队员为一级组.用JVC L9800高速摄像机选取100格/s的拍摄速度对投手前三局投球动作进行平面定机拍摄.用SBCAS2图像解析系统对投手投快球动作进行动作技术分析.旨在探讨我国棒球投手投球技术特点,为提高投手的投球技能提供参考. 相似文献
5.
通过对十一运会女子举重比赛欧阳晓芳抓举122 kg创全国纪录的技术动作进行影片拍摄和图像解析,得出膝关节角、髋关节角、躯干角和杠铃中心点垂直速度随时间变化曲线及各动作阶段的时间比、作功比和杠铃上升高度比以及杠铃重心的速度曲线.从而找出欧阳晓芳技术动作的优点与不足. 相似文献
6.
本文采用三维高速摄影和美国艾丽尔解析软件对我国优秀太极拳运动员吴雅楠完成的腾空摆莲360°技术动作进行拍摄和数据处理分析,旨在探讨优秀太极运动员完成难度技术动作的运动学量化指标,为竞技武术太极拳科学教学训练提供基础理论依据。 相似文献
7.
本文采用拍摄与测力同步手段记录了我国优秀女运动员“手推抛后空翻团身两周下”的动作,并用先进的解析系统进行运动数字化解析。整个过程以计算机为主机进行数据处理。通过生物力学的定量分析找出不足之处,做了技术上的诊断,以求为今后女双推抛技术的创新提供依据。 相似文献
8.
设置靶模具和信号灯,运用两台CASIO-EXFH25摄像机对两名国际级散打和泰拳选手后横踢动作进行同步拍摄,采用APAS系统（美国）进行三维视频图像解析,用Megwin Me6000表面肌电同步肌肉活动信号,对中泰横踢技术各运动环节支撑腿和进攻腿髋、膝、踝关节速度和角度变化特征,肌肉动员顺序、肌电特征进行对比分析,寻找差距,揭示技术动作内在规律,以期为鞭腿技术动作的教学、训练提供科学依据。 相似文献
9.
10.
为研究斜坡跑超速训练方法对提高运动员短跑成绩的意义,通过3台数码摄像机同步拍摄,应用视讯运动解析系统对图像进行解析,得到运动学参数,并对数据进行统计学处理,用生物力学方法确定指标来说明哪个坡度对运动员训练效果会更好,即既能增大运动员的跑速,又使动作技术结构不变形。结果表明:3°斜坡是7名受试者进行提高速度的斜坡跑超速训练所应选择的合适坡度。 相似文献
11.
Bicycle suspensions aim to improve riding performance and rider comfort through reduced impact and vibration transmission
to frame and rider. This study compared vibration damping of five mountain bike suspension systems and a rigid fork on gravel
and in trail conditions by quantifying accelerations at the axle and frame. Spectral analyses of the acceleration signals
revealed two distinct frequency regions from 0 to about 100 Hz and from about 300 to 400 Hz. The various suspension systems
were all effective in attenuating vibration over the low frequency region. Vibration amplitudes at the frame were considerably
less than at the axle for the suspension conditions (30–60% reduction) while only minor attenuation was observed with the
rigid fork (10–15%). In the high frequency region between 300–400 Hz, the signal was strongly attenuated at the frame for
all conditions, including the rigid fork. Trail conditions elicited greater amplitude low frequency vibrations than did gravel
conditions. While all suspension systems were somewhat effective in reducing vibration of the frame, air-oil forks had significantly
better vibration attenuation than did elastomer or linkage systems. 相似文献
12.
Colin Higgs 《Research quarterly for exercise and sport》2013,84(3):229-233
Abstract Photometric analysis of racing wheelchairs used by athletes at the 1980 Olympic Games for the Disabled, held at Arnham, Holland, was undertaken. Chairs were classified by the level of success achieved in them and by the distances over which they were raced. For each chair the position and orientation of the seat was measured, as were the length and the width of the wheelchair frame. In addition, mainwheel camber and handrim diameter were measured. Significant differences (at or beyond the .05 level) in wheelchair construction were recorded. The more successful wheelchairs were characterized by (1) lower seats, (2) the seat base at a comparatively higher angle to the horizontal, (3) narrower frame, (4) smaller handrims. The chairs used in distance events differed significantly from those used in sprints in (1) a more rearward placement of the seat, (2) lower placement of the seat, (3) longer chair frame and (4) narrower frame construction. 相似文献
13.
中国竞技体育的利益分析 总被引：22，自引：0，他引：22
竞技体育是通过竞技来追求利益的一种活动过程。竞技体育的利益结构由利益主体结构、利益客体结构和利益空间结构组成。经济体制直接影响着竞技体育利益格局的形成,传统计划经济体制下的我国竞技体育利益主体单一,国家成了竞技体育利益的总代表;利益层次呈明显的纵向利益关系;利益刚性化。经济体制转轨时期我国竞技体育利益格局具有利益主体多元性和过渡性等特征,利益层次逐渐向横向利益关系的方向发展,整体利益开始向个体利益过渡,但纵向利益关系仍然明显。 相似文献
14.
文章运用文献资料法、逻辑分析法等研究方法,阐述陈式太极拳老架的内容及其技术特点,从运动生物化学的角度进行分析,了解传统陈氏太极拳老架的供能方式。分析结果表明:陈式太极拳老架一路的供能方式主要为糖有氧代谢;陈太极拳老架二路的供能方式为糖有氧代谢、磷酸肌酸、糖酵解混合供能。 相似文献
15.
Abstract College male subjects (N = 132) who participated in the Intramural Bowling League served as subjects for this study. During 5 weeks of bowling, one night a week, frame by frame and game by game score analysis was made. In game one, frames 5 and 10 yielded significantly greater scores than frame 1. As to the 3-game scores, the third game totals were significantly higher than the first game totals. 相似文献
16.
Ann Bailey James Funk David Lessley Chris Sherwood Jeff Crandall William Neale 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(5):678-700
ABSTRACT Professional American football games are recorded in digital video with multiple cameras, often at high resolution and high frame rates. The purpose of this study was to evaluate the accuracy of a videogrammetry technique to calculate translational and rotational helmet velocity before, during and after a helmet impact. In total, 10 football impacts were staged in a National Football League (NFL) stadium by propelling helmeted 50th percentile male crash test dummies into each other or the ground at speeds and orientations representative of concussive impacts for NFL players. The tests were recorded by experienced sports film crews to obtain video coverage and quality typically available for NFL games. A videogrammetry procedure was used to track the position and rotation of the helmet throughout the relevant time interval of the head impact. Compared with rigidly mounted retroreflective marker three dimensional (3-D) motion tracking that was concurrently collected in the experiments, videogrammetry accurately calculated changes in translational and rotational velocity of the helmet using high frame rate (two cameras at 240 Hz) video (7% and 15% error, respectively). Low frame rate (2 cameras at 60 Hz) video was adequate for calculating pre-impact translational velocity but not for calculating the translational or rotational velocity change of the helmet during impact. 相似文献
17.
试论我国运动心理学教材内容和体系的建构 总被引：1，自引：0，他引：1
王天生 《西安体育学院学报》1995,(4)
回顾了我国运动心理学教材内容和体系建构过程的三个阶段及其特点，提出了运动心理学教材内容新框架结构。 相似文献
18.
随着现代拳击的高速发展,对拳击运动员的技术能力要求越来越高,为了更加的完善比赛选手技战术水平,熟练掌握正反架是十分必要的.本文通过录像分析法、文献资料法、逻辑分析法等研究方法,对2012年伦敦奥运会拳击冠军邹市明比赛中正反架灵活转换时进攻、防守、游击、反击、迎击技战术实效性进行统计分析.研究表明在比赛中在进攻端,灵活的转换正反架能更好地取得进攻的先机,出其不意攻其无备;在防守端,更加灵活脚下的步法,第一时间做好撤步、躲避对方进攻;正反架灵活转换能迷惑对手乘机找到空隙,更有效地进行防守反击和迎击得分.因此拳击运动员熟练掌握和灵活转换正反架丰富比赛技战术运用多样化值得广大教练员思考与借鉴. 相似文献
19.
在总结我国体育纠纷解决制度研究框架现状和借鉴现代经济学的基本分析框架基础上,建构了我国体育纠纷解决制度的宏观研究框架：1）界定我国体育纠纷解决制度环境;2）设定我国体育纠纷主体行为假设;3）我国体育纠纷解决制度安排;4）我国体育纠纷主体选择的均衡结果;5）我国体育纠纷解决制度价值评估 相似文献
20.
我国竞技体育不道德现象原因的分析框架 总被引：1，自引：0，他引：1
研究目的：提出我国竞技体育不道德现象原因的分析框架，以期为我国竞技体育行业不正之风的整治和道德建设提供参考。研究方法：（1）结合制度分析法进行分析。其分析框架为：制度——个人选择——行为结果。（2）社会学调查。研究结论：从人的行为发生来看。竞技体育不道德现象的原因，表现在不道德行为诱发机制的存在，不道德行为机会结构的存在，不道德行为约束机制（包括道德自律约束，内部管理和责任约束，制度约束，外界舆论约束机制4个方面）的缺失和道德行为报答机制的缺失等方面。 相似文献