共查询到20条相似文献，搜索用时 218 毫秒
1.
研究目的：通过对比正常学龄儿童与跆拳道训练的学龄儿童平衡能力,以探索跆拳道训练对学龄儿童静态平衡能力的影响。研究方法：选取参加跆拳道训练的学龄儿童10名作为实验组,匹配10名无跆拳道训练、武术及其他专项练习的学龄儿童作为对照组。采用win-pod平衡功能检测系统对受试者进行单足和双足平衡能力测试。研究结果：双足睁眼或闭眼测试时,有跆拳道训练的学龄儿童与无跆拳道训练、武术及其他静力练习的学龄儿童相比静态平衡能力差异有统计学意义（P＜0.05）;在睁眼左足测试时,实验组与对照组差异有统计学意义（P＜0.05）主要体现在重心动摇轨迹长、重心平均动摇速度、Y轴动摇速度这些指标上;而在睁眼右足测试时,实验组与对照组各项指标中除了Y轴平均摆幅这项指标,其他指标在两组之间差异都有统计学意义（P＜0.05）;闭眼单足测试时,从左右足依次来看,实验组与对照组分别在Y轴动摇速度和Y轴平均摆幅差异有统计学意义（P＜0.05）。研究结论：跆拳道训练能够有效增强学龄儿童在双足和右足站立静态站立的静态平衡能力,提高站立的姿势稳定性。 相似文献
2.
目的:对比跆拳道运动员静息状态和模拟第二回合比赛一分钟后的静态姿势摆动频谱、稳定性及体重分配,分析影响第三回合比赛平衡能力的风险因素。方法:选择山东省男子跆拳道运动员12名,采用Tetrax平衡测试系统测试受试者静息状态和模拟第二回合比赛一分钟后睁眼自然站立状态(NO)、闭眼自然站立状态(NC)、睁眼站在6cm软垫(PO)、闭眼站在6cm软垫(PC)下的姿势摆动频谱、稳定性指数(ST)和体重分配指数(WDI)。结果:模拟第二回合比赛一分钟后运动员的ST值显著高于静息状态的ST值(P=0.047)。NO姿势摆动频谱分析,静息状态和模拟第二回合比赛一分钟后,跆拳道运动员姿势摆动从F1到F8呈递减趋势,在F3频段模拟第二回合比赛一分钟后运动员摆动强度显著高于静息状态(P=0.036)。体重分配分析模拟第二回合比赛一分钟后NO、NC、PO、PC的WDI值显著(P<0.05)或极显著(P<0.01)高于静息状态。结论:跆拳道运动员正常姿势维持表现为高强度低频率的姿势摆动特点,模拟第二回合比赛一分钟后运动员存在因外周前庭功能异常引起的稳定性下降,体重分布从不同程度上都出现异常。 相似文献
3.
为帮助射击教练员和运动员选择科学、合理的站立角度,采用实验对比方法,对移动靶射击运动员进行了研究。结果表明：４５°～６０°站立姿势明显优于９０°站立姿势。 相似文献
4.
以屈膝15°左右站立为健身健美操动态基本姿势的定位研究 总被引：3，自引：1，他引：2
为避免健身健美操运动造成膝关节损伤,通过文献资料法、问卷调查法以屈膝15°左右站立为运动中基本姿势(动作初始、还原位置)对健美操俱乐部会员进行分组实验,并对训练前后各组膝关节屈伸肌群进行不同角速度峰力矩及对不同膝角股直肌肌电进行测试。研究得出:以屈膝15°左右站立为健身健美操动态基本姿势进行锻炼可以降低膝关节运动负荷,增强初学者股四头肌肌力,此姿态可以确定为膝关节动态保护性姿势。 相似文献
5.
文章运用文献资料法、专家访谈法、逻辑分析法等多种研究方法,阐述了姿势反射的概念与原理,分析姿势反射在跆拳道运动中的作用与具体应用,指出了跆拳道运动员在练习时应遵守的动作要领及在训练时应注意的问题,以快速掌握与提高跆拳道运动员的专项技术,减少运动损伤。 相似文献
6.
一、站立架式分析
站立的进攻、防守、反击技术主要是抱腿及其各种变化,所以自由跤的站立姿势既要有利于我方抱上对方的腿,又要不利于对方抱住我方的腿。目的是和对手搏斗时不吃亏。运动员因级别和身材高矮不同其姿势虽有所变化,但万变不离其宗,都要以身体重心稳定和移动灵活为原则,并要求攻守兼备。常见的站立姿势有三种。 相似文献
7.
随着竞技跆拳道的发展,跆拳道教学就成为不可或缺的组成部分,而跆拳道的教学内容是非常庞大的,包括理论部分、竞技跆拳道、传统跆拳道和能力培养.单就竞技层面,课程包括基本姿势、基本腿法、基本步法、基本拳法、战术训练、身体训练、实战比赛等,其中以基本腿法为主.跆拳道号称腿的艺术,且横踢被誉为“跆拳道第一腿法”. 相似文献
8.
9.
随着跆拳道项目近几年的发展,小学生已然成为主题,人们通过跆拳道的练习来增强身体素质,磨炼意志,以达到良好的身体素质。本研究采用跆拳道的练习作为干预手段来了解跆拳道锻炼对小学生速度素质造成的影响,为小学开展跆拳道课程提供理论依据。本研究把实验样本分为两个组,分别是对照组和实验组,通过每个组实验前后数据的对比分析得出相应的参数,通过实验组与对照组参数的比较得出预期结果,从而得出相应的结论。通过跆拳道练习后小学生50m跑成绩均有不同程度的改善,统计学分析分别呈显著性差异(p0.05)和非常显著性差异(p0.01)。 相似文献
10.
11.
Cyclists regularly change from a seated to a standing position when the gradient increases during uphill cycling. The aim of this study was to analyse the physiological and biomechanical responses between seated and standing positions during distance-based uphill time trials in elite cyclists. Thirteen elite cyclists completed two testing sessions that included an incremental-specific cycling test on a cycle ergometer to determine VO2max and three distance-based uphill time trials in the field to determine physiological and biomechanical variables. The change from seated to standing position did not influence physiological variables. However, power output was increased by 12.6% in standing position when compared with seated position, whereas speed was similar between the two positions. That involved a significant increase in mechanical cost and tangential force (Ftang) on the pedal (+19% and +22.4%, respectively) and a decrease (?8%) in the pedalling cadence. Additionally, cyclists spent 22.4% of their time in the standing position during the climbing time trials. Our findings showed that cyclists alternated between seated and standing positions in order to maintain a constant speed by adjusting the balance between pedalling cadence and Ftang. 相似文献
12.
The purpose of this study was to compare measures of body size in two samples of youth baseball players with normative data from the United States National Center for Health Statistics (NCHS) growth charts. One sample of youth baseball players participated in a local little league. The second sample of youth baseball players were members of eight of the twelve teams participating in the 1995 Dixie Youth World Series. Normative data for the United States (NCHS) were used as comparative data. Two trained anthropometrists measured standing height, sitting height, lower limb height, upper limb length, arm girth, calf girth, tricep skinfold, and abdomen skinfold on all participants. In both samples, pitchers, short stops, and first basemen were a more highly skilled group and exhibited larger body size (greater standing height, sitting height, lower limb height, upper limb length) than children who played at other positions. The standing height of local little league players was similar to the median of reference data at ages 7, 8, and 9 years. The standing height and weight of skilled players in both samples approximated the 75th percentile for standing height and weight at ages 10, 11, 12, and 13 years. The results suggest that baseball players exhibit larger body size than the normal population at young ages. Body size may be an important criterion used by coaches to select and assign young players to certain positions. 相似文献
13.
Karen E. French John H. Spurgeon Michael E. Nevett 《Research quarterly for exercise and sport》2013,84(3):179-188
Abstract The purpose of this study was to compare measures of body size in two samples of youth baseball players with normative data from the United States National Center for Health Statistics (NCHS) growth charts. One sample of youth baseball players participated in a local little league. The second sample of youth baseball players were members of eight of the twelve teams participating in the 1995 Dixie Youth World Series. Normative data for the United States (NCHS) were used as comparative data. Two trained anthropometrists measured standing height, sitting height, lower limb height, upper limb length, arm girth, calf girth, tricep skinfold, and abdomen skinfold on all participants. In both samples, pitchers, short stops, and first basemen were a more highly skilled group and exhibited larger body size (greater standing height, sitting height, lower limb height, upper limb length) than children who played at other positions. The standing height of local little league players was similar to the median of reference data at ages 7, 8, and 9 years. The standing height and weight of skilled players in both samples approximated the 75th percentile for standing height and weight at ages 10, 11, 12, and 13 years. The results suggest that baseball players exhibit larger body size than the normal population at young ages. Body size may be an important criterion used by coaches to select and assign young players to certain positions. 相似文献
14.
Esar Shvartz 《Research quarterly for exercise and sport》2013,84(2):351-354
Abstract Seventeen subjects were used to determine the effect of gymnastic training on orthostatic efficiency. The experimental group included 10 subjects that practiced on heavy apparatus for 3 months. The control group included 7 subjects that practiced volleyball for the same length of time. Circulatory adjustments to gravity were measured by heart rate and blood pressure differences between lying and standing positions. The results showed that the gymnastic group improved its orthostatic efficiency through a rise in systolic pressure and a smaller decrease of the pulse pressure upon standing, with no significant changes shown by the control group. 相似文献
16.
It is not known whether the seated or standing position favours performance during intensive bouts of uphill cycling. The following hypotheses were therefore tested: (1) the standing position results in better performance at a high power output, while (2) the seated position is best at a moderate power output. We also assessed the seated-standing transition intensity, above which seated cycling should be superseded by standing cycling for maximization of performance. Ten male cyclists (mean age 27 years, s = 3; height 1.82 m, s = 0.07; body mass 75.2 kg, s = 7.0; VO2max 70.0 ml.kg(-1).min(-1), s = 5.2) performed seated and standing treadmill cycling to exhaustion at 10% grade and at four power outputs ranging from 86% to 165% of their power output at maximal oxygen uptake (Wmax). Power output at maximal oxygen uptake was obtained during determination of VO2max. There was no difference in time to exhaustion between the two cycling positions at 86% of Wmax (P = 0.29). All participants performed best at the highest power output (165% of Wmax) when standing (P = 0.002). An overall seated-standing transition intensity of 94% of Wmax was identified. Thus, in general, cyclists may choose either the standing or seated position for maximization of performance at a submaximal intensity of 86% of Wmax, while the standing position should be used at intensities above 94% of Wmax and approaching 165% of Wmax. 相似文献
17.
文章采用录像观察等研究方法,对2011年世界UFC终极格斗比赛中技术运用的现状、制胜的因素等方面进行全面、系统的分析。研究结果认为：技术KO在比赛中占得分次数最多,拥有过硬的站立击打技术是格斗运动员必备的基础。在站立贴摔动作过程中应加强对拳膝动作的防守和使用,注重站立贴身技术特别是贴摔技术的运用,促进贴身击打和地面技术有机结合,并建议今后应加强地面绞锁断头台技术的强化训练,提高技术成功率为比赛制胜创造条件。 相似文献
18.
人的大部分生活、生产劳动，常用的姿势基本是站或坐。身体的主要重量是通过身体中部直接或经下肢传至支撑面，并由支撑面将反作用力通过身体中部传递或分散，身体中部起着承上启下的重要作用。正常人一生中站姿或坐姿时，身体的总负荷量最大。在健身锻炼时，对身体中部的锻炼应和身体其他部位或系统得到同样的重视。介绍了练习身体中部柔韧性、灵活性的基本方法。 相似文献
19.
在学好原地过杆技术和助跑起跳技术后,再学习助跑起跳与过杆相结合技术时,往往结合不好,助跑过杆技术不能达到原地过杆技术那样的效果。笔者通过多年的教学实践发现、平台、斜台和杆上挺髋练习,对助跑过杆术的掌握,起着良好的效果。 相似文献
20.
从乒乓球发球规则的修改看发球技术的新变化 总被引：9，自引：1，他引：8
国际乒联已从3个方面对规则进行了重订,其中“发球无遮拦”的规定就是对发球规则的重大修改,新规则的实施势必对乒乓球运动产生重要影响。就不同站位、不同方式发球对“闯入”“三角禁区”问题进行比较分析,从而找到针对性的改进发球的方法,以期引起乒乓球工作者的广泛注意,加快适应发球新规则。 相似文献