江苏省女子短跑成绩实现突破的研究     

钱健 《辽宁体育科技》2008,30(1):44-45

对江苏省女子短跑成绩实现突破的原因进行研究。结果表明：合理的选材、科学化训练、科学的管理。决策、管理，训练三位一体的组织保障，围绕短跑项目特征及训练规律开展科学研究是提高短跑成绩的主要原因。  相似文献   

论10～12岁少儿游泳运动员准备期耐力训练与速度训练相结合方法     

张广联 《体育科技》2009,30(1)

如何搞好少儿游泳运动员的基础训练,特别是准备期训练是教练员们所关心的问题。试图通过研究,找出合理安排游泳运动员训练准备期的方法,为其打下良好的基础。  相似文献   

SRM系统在短距离自行车专项能力测试与评定中的应用研究   总被引：6，自引：6，他引：0  

李之俊  马国强  苟波 《体育科研》2007,28(4):55-58

应用场地SRM系统对上海自行车队重点队员6人的场地专项训练分阶段进行跟踪测试,以便筛选有效指标评价短距离自行车主要专项能力。结果表明,在短距离自行车爆发力评价中,最大功率和平均功率、最大频率和平均频率是反映运动能力的有效指标;平均功率和平均频率是反映力量耐力的有效指标;在对短距离自行车专项最大速度的评价中,最大频率和平均频率是反应运动能力的有效指标;而平均频率是反映高速耐力的有效指标。  相似文献   

残疾人短跑运动员起跑特殊性研究     

赵丽萍  丁玮 《四川体育科学》2007,(2):80-81,89

采用文献资料法、观察法和调查访问等方法对残疾人运动员在短跑起跑中的特殊性进行了深入的分析研究。认为现行短跑起跑规则和发令操作方式对部分残疾组别的运动员存在不公平现象。进而提出规则的制定应符合残疾人身体特点、提高裁判工作特殊技能、为聋人组T60级设计较科学的起跑发令装置等建议。  相似文献   

少年女子短跑运动员途中跑支撑时间及影响因素     

朱民华  杨明媛  刘璐  李智 《上海体育学院学报》2007,31(5):60-64

运用运动学与动力学理论，对少年女子短跑和跳跃项目运动员短跑途中跑支撑时间及相关影响因素进行研究。结果表明：支撑时间和年龄不相关，而是随速度提高而缩短；影响支撑时间的因素为技术、身高、快速力量和速度。通过与世界优秀运动员支撑时间比较显示：少年女子运动员支撑时间较长，腾空／支撑时间值小，前支撑／支撑时间值大，高水平运动员与此相反。认为：缩短支撑时间、形成各种合理时间特征比例是提高最大跑速的关键；在考察支撑时间对速度影响时，还应综合考虑身体结构和身高等因素。  相似文献   

现代短跑运动的专项力量训练   总被引：8，自引：1，他引：7  

罗跃兵  屈胜国 《武汉体育学院学报》2004,38(4):77-79

在重新审视我国短跑运动员力量训练理论与方法的基础上,从短跑运动专项力量训练的指导思想、方法学原理、训练手段与方法等3个方面,对现代短跑运动员的力量训练进行了分析研究。  相似文献   

Pacing profiles and pack running at the IAAF World Half Marathon Championships     

Brian Hanley 《Journal of sports sciences》2015,33(11):1189-1195

The aim of this study was to describe the pacing profiles and packing behaviour of athletes competing in the IAAF World Half Marathon Championships. Finishing and split times were collated for 491 men and 347 women across six championships. The mean speeds for each intermediate 5 km and end 1.1 km segments were calculated, and athletes grouped according to finishing time. The best men and women largely maintained their split speeds between 5 km and 15 km, whereas slower athletes had decreased speeds from 5 km onwards. Athletes were also classified by the type of packing behaviour in which they engaged. Those who ran in packs throughout the race had smaller decreases in pace than those who did not, or who managed to do so only to 5 km. While some athletes’ reduced speeds from 15 to 20 km might have been caused by fatigue, it was also possibly a tactic to aid a fast finish that was particularly beneficial to medallists. Those athletes who ran with the same competitors throughout sped up most during the finish. Athletes are advised to identify rivals likely to have similar abilities and ambitions and run with them as part of their pre-race strategy.  相似文献   

Effects of forward trunk lean on hamstring muscle kinematics during sprinting     

Ayako Higashihara  Yasuharu Nagano  Kazumasa Takahashi  Toru Fukubayashi 《Journal of sports sciences》2015,33(13):1366-1375

This study aimed to investigate the effects of forward trunk lean on hamstring muscle kinematics during sprinting. Eight male sprinters performed maximal-effort sprints in two trunk positions: forward lean and upright. A three-dimensional musculoskeletal model was used to compute the musculotendon lengths and velocity of the biceps femoris long head, semitendinosus, and semimembranosus muscles during the sprinting gait cycle. The musculotendon lengths of all the three hamstring muscles at foot strike and toe-off were significantly greater during the forward trunk lean sprint than during the upright trunk sprint. In addition, a positive peak musculotendon lengthening velocity was observed in the biceps femoris long head and semimembranosus muscles during the late stance phase, and musculotendon lengths at that instant were significantly greater during the forward trunk lean sprint than during the upright trunk sprint. The present study provides significant evidence that a potential for hamstring muscle strain injury involving forward trunk lean sprinting would exist during the stance phase. The results also indicate that the biceps femoris long head and semimembranosus muscles are stretched during forward trunk lean sprinting while contracting eccentrically in the late stance phase; thus, the elongation load on these muscles could be increased.  相似文献   

Circadian rhythm effect on physical tennis performance in trained male players     

Álvaro López-Samanes  Diego Moreno-Pérez  José L. Maté-Muñoz  Raúl Domínguez  Jesús G. Pallarés  Ricardo Mora-Rodriguez 《Journal of sports sciences》2017,35(21):2121-2128

To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS), agility T-test (AGIL) and a 10-m sprint (10-m RUN). In a randomised, counter-balance order, tennis players underwent the test battery twice, either in the morning (i.e., AM; 9:00 h) and in the afternoon (i.e., PM; 16:30 h). Paired t-tests were used to analyse differences due to time-of-day in performance variables. Comparison of morning versus afternoon testing revealed that SVA (168.5 ± 6.5 vs. 175.2 ± 6.1 km · h^?1; P = 0.003; effect size [ES] = 1.07), CMJ (32.2 ± 0.9 vs. 33.7 ± 1.1 cm; P = 0.018; ES = 1.46), AGIL (10.14 ± 0.1 vs. 9.91 ± 0.2 s; P = 0.007; ES = 1.23) and 10-m RUN time (1.74 ± 0.1 vs. 1.69 ± 0.1 s; P = 0.021; ES = 0.67) were significantly blunted during the morning testing. However, IS was not affected by time-of-day (P = 0.891). Thus, tennis performance may be reduced when competing in the morning in comparison to early evening. Therefore, coaches and tennis players should focus on schedule the SVA, power, speed and agility training sessions in the afternoon.  相似文献   

对青少年短跑运动员放松技术训练的探讨   总被引：2，自引：0，他引：2  

张青 《安徽体育科技》2003,24(1):31-32

通过运用调查法、文献资料综合法和实验方法对放松技术进行分析探讨，结果表明短跑运动员放松技术的提高，对提高运动成绩有重要作用。  相似文献