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对改进100m途中跑着地技术及其对整体技术效果影响的实验研究 总被引：2，自引：0，他引：2
运用运动生物力学原理，提出在100m途中跑脚下放着地过程的最后阶段“积极回摆小腿”的技术改进设想。对实验对象实验前后的运动成绩、脚着地技术效果以及对100m途中跑整体技术效果的影响等方面进行了比较和分析。实验结果表明：通过改进100m途中跑脚着地技术，实验组的100m跑成绩和途中跑脚着地技术及整体技术效果明显好于对照组。 相似文献
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200米跑的专项技术包括起跑技术、途中跑技术、弯道技术、冲刺跑技术等。在教学和训练中教练员和教师要对青少年运动员进行直道途中跑-起跑-加速跑过渡到途中跑-弯道跑-弯道进入直道-弯道起跑-全程技术等各阶段的教学，教学和训练要从简单到复杂，从容易到困难，循序渐进，这样会收到较好的效果． 相似文献
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前言途中跑技术是现代短跑技术中重要的组成部分,近几年来,短跑途中跑的整体技术变化不大,但除了科学化训练及场地器材不断更新的因素外,短跑途中跑技术的不断完善与发展仍是运动成绩不断提高的重要原因之一,在现代短跑技术研究成果的分析基础上,从多方面分析,对现代短跑途中跑的技术特点有以下几点认识： 相似文献
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一、途中跑技术(一)目的和任务建立正确的途中跑技术模式,了解如何获得速度。(二)教学步骤途中跑技术是短跑的重要组成部分,强度最高,起跑后经过一定的加速跑,然后过渡到途中跑(图1)。途中跑几乎占了短跑比赛的大部分。因此,在初学短跑中要注重这一技术的学习。 相似文献
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短跑是田径运动的基础，途中跑是短跑的重要阶段，途中跑下肢摆动技术是途中跑技术的关键环节，它直接影响跑的技术效果。现代短跑技术的特点突出表现为快跑中髋部伸展的意识、速度、幅度和摆腿下扒着地的积极性、速度、方法、距离及效果等，在支撑阶段摆动腿的摆动和腾空阶段的摆动效果是影响短跑技术的关键之一。 相似文献
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短跑是田径运动的基础，途中跑是短跑的重要阶段，途中跑下肢摆动技术是途中跑技术的关键环节，它直接影响跑的技术效果。现代短跑技术的特点突出表现为快跑中髋部伸展的意以、速度、幅度和摆腿下扒着地的积极性、速度、方法、距离及效果等，在支撑阶段摆动腿的摆动和腾空阶段的摆动效果，是影响短跑技术的关键之一。 相似文献
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通过影片解析,对第11届亚运会男子百米跑冠军曼索尔和亚军郑晨的步长、步频、途中跑等技术动作参数进行对比分析,从中揭示出郑晨的技术差距。 相似文献
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运用激光测速系统、运动学分析系统以及多参数同步触发系统,在上海2名优秀短跑运动员的100 m跑训练过程中进行测试,将运动员100 m途中跑支撑阶段的运动学参数与人体运动的水平速度进行同步分析,来揭示短跑运动员100 m途中跑速度的变化规律,讨论和分析短跑运动员100 m途中跑支撑阶段的不同运动学参数的变化与人体速度的关系,为教练员和运动员提高短跑途中跑的速度和改进技术动作提供一定的数据参考和理论依据。 相似文献
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Abstract The purpose of the study was to determine the effects of running training, instruction on running technique, and a combination of instruction and running training on the running economy of 10-year-old children. Experimental treatments were randomly assigned to intact groups. Oxygen consumption was determined via the open circuit method during overground running at 161 m · min –1.Vertical displacement was determined utilizing cinematography. Stride rate was determined using 60-sec counts; stride length was calculated from stride rate and the distance covered. Subjects (n =40) required 38.9 ml · min –1 · kg –1 of O 2 to sustain this pace and exhibited 3.71 cm vertical displacement. The mean stride length was 88 cm and the mean stride rate was 183 strides · min –1.No statistically significant alterations in running economy or technique were produced as a result of the various treatment regimens. 相似文献
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Abstract A study of the effect of fatigue on the mechanical characteristics of running during a 10,000 meter race was undertaken using high speed cinematography and a computer analysis technique. Eight highly skilled male subjects were filmed at four intervals throughout the event. An analysis of variance for trends was conducted for each of the dependent variables indicating the adjustments made by the runners that accompanied fatigue over the four stages of the event. Runners countered fatigue by changing sections of their total gait pattern (stride length, stride rate, segmental body positions) and reducing running velocity. Toward the end of the race the runners became less competent in the positioning of the foot and leg at foot-strike, which increased the potential for a retarding effect. A more extended lower limb increased the energy requirements of the recovery phase during the latter stages of the race. Fatigue caused these highly skilled runners to systematically alter their technique throughout the race. These adjustments, however, were not excessive. 相似文献
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George M Dallam Randall L Wilber Kristen Jadelis Graham Fletcher Nicholas Romanov 《Journal of sports sciences》2013,31(7):757-764
In this study, we examined the consequences of a global alteration in running technique on running kinematics and running economy in triathletes. Sixteen sub-elite triathletes were pre and post tested for running economy and running kinematics at 215 and 250?m?·?min?1. The members of the treatment group (n = 8) were exposed to 12 weeks of instruction in the “pose method” of running, while the members of the control group (n = 8) maintained their usual running technique. After the treatment period, the experimental group demonstrated a significant decrease in mean stride length (from 137.25?±?7.63?cm to 129.19?±?7.43?cm; P <?0.05), a post-treatment difference in vertical oscillation compared with the control group (6.92?±?1.00 vs. 8.44?±?1.00?cm; P <?0.05) and a mean increase in submaximal absolute oxygen cost (from 3.28?±?0.36?l?·?min?1 to 3.53?±?0.43?l?·?min?1; P <?0.01). The control group exhibited no significant changes in either running kinematics or oxygen cost. The global change in running mechanics associated with 12 weeks of instruction in the pose method resulted in a decrease in stride length, a reduced vertical oscillation in comparison with the control group and a decrease of running economy in triathletes. 相似文献
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不同步频和步幅的5km跑过程中运动员心率变化的对比研究 总被引：2，自引：0，他引：2
为了观察中长跑运动员长距离跑过程中步频和步幅的变化对身体机能反应的影响,8名运动员在跑台上分别采取主动加大步幅和主动减小步幅而增快步频的跑法,以相同的速度进行了两次5km跑,记录运动员在跑步过程中心率的变化并进行对比。结果显示,在相同速度5km跑的过程中,运动员采取主动减小步幅的跑法,其心率均值显著低于采取主动加大步幅的跑法。提示,长距离跑过程中,运动员采取主动减小步幅,或加大步频的跑法较为省力。 相似文献
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本文对基普·凯特在800m跑预、决赛中，两次创造室内世界纪录的现场比赛录像进行了观测，着重从分段跑成绩、步长、步频、支撑阶段与腾空阶段的时间进行研究，分析了基普·凯特保持快节奏跑的技术特征。 相似文献
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为了观察中长跑运动员长距离跑过程中步频和步幅的变化对身体机能反应的影响，8名运动员在跑台上分别采取主动加大步幅和主动减小步幅而增快步频的跑法，以相同的速度进行了两次5km跑，记录运动员在跑步过程中心率的变化并进行对比。结果显示，在相同速度5km跑的过程中，运动员采取主动减小步幅的跑法，其心率均值显著低于采取主动加大步幅的跑法。提示，长距离跑过程中，运动员采取主动减小步幅，或加大步频的跑法较为省力。 相似文献
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Jocelyn F. Hafer Allison M. Brown Polly deMille Howard J. Hillstrom Carol Ewing Garber 《Journal of sports sciences》2015,33(7):724-731
Many studies have documented the association between mechanical deviations from normal and the presence or risk of injury. Some runners attempt to change mechanics by increasing running cadence. Previous work documented that increasing running cadence reduces deviations in mechanics tied to injury. The long-term effect of a cadence retraining intervention on running mechanics and energy expenditure is unknown. This study aimed to determine if increasing running cadence by 10% decreases running efficiency and changes kinematics and kinetics to make them less similar to those associated with injury. Additionally, this study aimed to determine if, after 6 weeks of cadence retraining, there would be carryover in kinematic and kinetic changes from an increased cadence state to a runner’s preferred running cadence without decreased running efficiency. We measured oxygen uptake, kinematic and kinetic data on six uninjured participants before and after a 6-week intervention. Increasing cadence did not result in decreased running efficiency but did result in decreases in stride length, hip adduction angle and hip abductor moment. Carryover was observed in runners’ post-intervention preferred running form as decreased hip adduction angle and vertical loading rate. 相似文献
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对近20年世界女子100m跑成绩演变和1997年田径世锦赛女子100m跑成绩数据(100m各段落跑速、步长、步频、步数)进行了分析，结果认为，世界女子100m短跑优秀运动员成绩近20年稳步提高，平均最高速度的产生段落在50～60m之间，即起跑后6～7s，速度下降发生在90～100m，下降幅度达到6．18％；在冲刺阶段，大部分运动员步幅增大至最高水平，步频和步长呈高度负相关，年龄与步长呈高度正相关，最高速度在很大程度上决定着100m跑成绩。 相似文献
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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