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排序方式: 共有372条查询结果,搜索用时 283 毫秒
1.
运用献资料法和灰色关联分析法,对世界7名优秀男子400m跑运动员的速度分配特点进行了分析。找出了影响竞赛成绩的主要因素,提出了相应的建议。 相似文献
2.
髋部肌群对跑速的作用研究 总被引:1,自引:0,他引:1
方儒钦 《军事体育进修学院学报》2004,23(3):60-62
通过对髋部肌群工作时的生理机制的研究,着重从理论与实践上阐述髋部肌群在短跑中的重要作用。提出了为了改变我国短跑水平的落后面貌,必须重视髋部肌群的力量的观点。 相似文献
3.
运用文献资料、特征解析和数理统计等研究方法,对短跑与跨栏运动员的年度及小周期训练负荷控制特征进行研究。结果表明:在年度不同中周期训练过程中,准备期的速度力量训练负荷量约占年度速度力量训练总负荷量的41%-42%,赛前准备期的速度力量训练负荷量约占全年速度力量训练总负荷量的43%-44%,比赛期的速度力量训练负荷量约占全年速度力量训练总负荷量的6%-7%;而小周期运动负荷的控制特征,则表现为准备期中各小周期的训练内容是以改进技术动作作为提高竞技能力的核心,并以提高最大速度和速度耐力作为身体素质训练的主要内容,但最大力量、速度力量和有氧耐力训练仍是其重要内容之一。 相似文献
4.
Myokines may play a role in the health benefits of regular physical activity. Secreted protein acidic rich in cysteine (SPARC) is a pleiotropic myokine that has been shown to be released into the bloodstream by skeletal muscle in response to aerobic exercise. As there is evidence suggesting that SPARC release may be linked to glycogen breakdown and activation of 5’ adenosine monophosphate-activated protein kinase, we hypothesised that brief supramaximal exercise may also be associated with increased serum SPARC levels. In the present study, 10 participants (3 women; mean?±?SD age: 21?±?3 y, body mass index (BMI): 22?±?3?kg?m?2, and V˙O2max: 39?±?6?mL?kg?1?min?1) performed an acute bout of supramaximal cycle exercise (20-s Wingate sprint against 7.5% of body mass, with a 1-min warm-up and a 3-min cool-down consisting of unloaded cycling). Serum SPARC levels were determined pre-exercise as well as 0, 15, and 60?min post-exercise and corrected for plasma volume change. To determine whether regular exercise affected the acute SPARC response, participants repeated the acute exercise protocol three times per week for four weeks, and serum SPARC response to supramaximal exercise was reassessed after this period. Acute supramaximal exercise significantly decreased plasma volume (?10%; p?<?.001), but was not associated with a significant change in serum SPARC levels at either the pre-training or post-training testing sessions. In conclusion, in contrast to aerobic exercise, a single brief supramaximal cycle sprint is not associated with an increase in serum SPARC levels, suggesting that SPARC release is not related to skeletal muscle glycogen breakdown. 相似文献
5.
Ayako Higashihara Yasuharu Nagano Takashi Ono Toru Fukubayashi 《European Journal of Sport Science》2016,16(1):36-41
The purpose of this study was to investigate the time series relationships between the peak musculotendon length and electromyography (EMG) activation during overground sprinting to clarify the risk of muscle strain injury incidence in each hamstring muscle. Full-body kinematics and EMG of the right biceps femoris long head (BFlh) and semitendinosus (ST) muscles were recorded in 13 male sprinters during overground sprinting at maximum effort. The hamstring musculotendon lengths during sprinting were computed using a three-dimensional musculoskeletal model. The time of the peak musculotendon length, in terms of the percentage of the running gait cycle, was measured and compared with that of the peak EMG activity. The maximum length of the hamstring muscles was noted during the late swing phase of sprinting. The peak musculotendon length was synchronous with the peak EMG activation in the BFlh muscle, while the time of peak musculotendon length in the ST muscle occurred significantly later than the peak level of EMG activation (p < 0.05). These results suggest that the BFlh muscle is exposed to an instantaneous high tensile force during the late swing phase of sprinting, indicating a higher risk for muscle strain injury. 相似文献
6.
在短跑项目中,良好的放松技术对短跑成绩有着极其重要的影响,它能最经济、最有效地发挥运动员自身的最大潜力,取得最好的成绩。本文运用文献资料法,从生理学、心理学、训练学等角度对短跑运动员的放松技术特点及影响因素进行分析,并提出了一些有效的放松技术训练方法。 相似文献
7.
This study aimed to compare the effect of 6 weeks of resistance training or combined resistance training and change of direction exercises on physical performance and motor skills in futsal players. Thirty-four futsal players were divided into full squat group (SG, n = 12), combined full squat and change of direction exercises group (S+CDG, n = 12) and control group (CG, n = 10). The resistance training for SG consisted of full squat with low load (~45–58% 1RM) and low volume (4–6 repetitions), whereas the S+CDG performed the same resistance training program combined with loaded change of direction. Sprint time in 10 and 20 m, change of direction test, countermovement vertical jump (CMJ) height, maximal strength and force–velocity relationship in full squat exercise, kicking speed ball (BSmean) and repeated sprint ability (RSAmean) were selected as testing variables. Both experimental groups showed significant improvements for CMJ, BSmean and all strength parameters. Only SG resulted in significant sprint gains, whereas S+CDG also achieved significant improvements in RSAmean. The CG remained unchanged after training period. No significant differences were found between both experimental groups. These findings suggest that only 12 sessions of either lightweight resistance training alone, lifting the load at maximal intended velocity or combined with change of direction exercises is enough to improve several physical and skills capacities critical to futsal performance in adult players. 相似文献
8.
田径短跑运动员专项运动能力的构成及其因素分析 总被引:1,自引:0,他引:1
田径运动项目是奥运会中金牌数最多的项目,专项运动能力是田径短跑运动员取得成绩的重要因素之一。专项运动能力是指运动员在训练和比赛中表现出来的专项身体素质、专项技战术、专项心理品质的综合水平。 相似文献
9.
2种不同起跑动作的生物力学实验研究 总被引:7,自引:0,他引:7
采用测力台与肌电同步的方法对 4名一级短跑运动员的蹲踞式与站立式起跑动作进行了运动生物力学分析。研究结果 :蹲踞式起跑中水平支撑反作用力明显大于站立式起跑时水平支撑反作用力 ;蹲踞式起跑和站立式起跑中的肌肉活动顺序即肌肉用力顺序各不相同 ;蹲踞式起跑和站立式起跑中肌肉的肌电活动时间和幅度 ,即肌肉用力程度各不相同 ,在蹲踞式起跑中右股直肌用力程度最大 ,而站立式起跑中右腓肠肌用力最大 ;股直肌和腓肠肌是这 2种起跑姿势的主要用力肌群 相似文献
10.
"六秒定律”在高校高水平短跑运动训练中的运用 总被引:4,自引:0,他引:4
速度是短跑运动的核心,通过对六秒定律训练法和传统30 m跑训练手段在发展运动员的专项速度素质等方面的比较分析得出,六秒跑距更能反映人体在ATP-CP供能系统下的速度能力,在高校高水平短跑运动训练中,引入六秒定律训练法,对提高运动员的加速能力和对全程节奏的控制能力,均有良好的训练效果. 相似文献