中外男子撑竿跳高优秀运动员起跳阶段部分运动学参数的比较研究     

刘欣石  魏巍 《安徽体育科技》2009,30(6):19-22

采用运动生物力学测量法,对刘飞亮2007年参加全国第8届大学生运动会创5.71m全国纪录时的插穴起跳技术进行三维运动学剖析,并与国外优秀选手的相关参数进行比较研究。主要研究结果表明：刘飞亮在起跳离地瞬间,注重向上起跳,形成了较大的腾起角,而国外优秀选手则注重向前上方起跳,重视水平速度的保持与利用。  相似文献   

古典芭蕾挥摆腿技术动作的运动学剖析          下载免费PDF全文

李博  吴东方  唐海英  王蓓倍 《武汉体育学院学报》2009,43(12):50

运用运动生物力学的研究方法与基本理论,对古典芭蕾舞挥鞭腿转难度动作中摆动腿的基本特点进行研究,找出该动作的内在特点与规律,建立其转体动作时摆动腿运动的相关参数指标,为今后科学训练提供相关理论依据,为诊断与分析舞蹈者的技术动作奠定必要的理论基础.  相似文献   

张坤和TOM的横踢技术运动生物力学比较分析          下载免费PDF全文

毛浓选 《体育科研》2017,(2):54-59

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   

Normobaric hypoxia increases the growth hormone response to maximal resistance exercise in trained men     

Dean Filopoulos  Stuart J. Cormack 《European Journal of Sport Science》2017,17(7):821-829

This study examined the effect of hypoxia on growth hormone (GH) release during an acute bout of high-intensity, low-volume resistance exercise. Using a single-blinded, randomised crossover design, 16 resistance-trained males completed two resistance exercise sessions in normobaric hypoxia (HYP; inspiratory oxygen fraction, (FiO₂) 0.12, arterial oxygen saturation (SpO₂) 82?±?2%) and normoxia (NOR; FiO₂ 0.21, SpO₂ 98?±?0%). Each session consisted of five sets of three repetitions of 45° leg press and bench press at 85% of one repetition maximum. Heart rate, SpO₂, and electromyographic activity (EMG) of the vastus lateralis muscle were measured throughout the protocol. Serum lactate and GH levels were determined pre-exposure, and at 5, 15, 30 and 60?min post-exercise. Differences in mean and integrated EMG between HYP and NOR treatments were unclear. However, there was an important increase in the peak levels and area under the curve of both lactate (HYP 5.8?±?1.8 v NOR 3.9?±?1.1?mmol.L^?1 and HYP 138.7?±?33.1 v NOR 105.8?±?20.8?min.mmol.L^?1) and GH (HYP 4.4?±?3.1 v NOR 2.1?±?2.5?ng.mL^?1 and HYP 117.7?±?86.9 v NOR 72.9?±?85.3?min.ng.mL^?1) in response to HYP. These results suggest that performing high-intensity resistance exercise in a hypoxic environment may provide a beneficial endocrine response without compromising the neuromuscular activation required for maximal strength development.  相似文献   

我国优秀女子跳远运动员起跳时水平速度损失率的研究   总被引：4，自引：0，他引：4  

黄继珍  陆利国 《广州体育学院学报》1999,(3)

跳远起跳阶段水平速度的损失率,直接影响跳远成绩,也是评价跳远起跳技术质量的重要指标。本文通过对我国优秀女子跳远运动员比赛中起跳技术的运动学特征分析,发现起跳阶段水平速度损失是不可避免的,水平速度损失率应控制在７—１２％的范围,偏大或偏小都会使跳远成绩下降;我国女子跳远运动员起跳时着地角偏小,导致更多的水平速度无意义损耗。  相似文献