体操运动员前臂运动特征及其发展特点的研究     

李宁 《体育科学》1998,18(1):0

采用直观半圆仪,对我国441名体操运动员和563名青少年儿童的前臂屈伸复制运动误差值作了测定和比较分析等研究,结果发现,就这个非专业性的和极为普通的动作——前臂屈伸运动的准确性来讲,在运动等级不同的体操运动员之间以及体操运动员与同年龄的普通人之间,都存在明显的差别。而且,这种运动准确性较高者,学习基本体操动作的成效优于准确性较低者。这种运动的准确性在7～11岁期间提高最快,12～22岁时呈波浪式的发展状态;在体操运动训练的作用下,这种运动的准确性,在9～13岁加速提高,而且,随后的波浪式变化明显减小。  相似文献   

对全国武术冠军王晓楠、张亚男"侧踢抱脚直立"平衡动作的运动学对比分析     

冯巨涛 《河北体育学院学报》2005,19(2):82-84

从完成时间、平衡的稳定性和踢腿速度三个方面，对全国武术冠军王晓楠和张亚男侧踢抱脚直立平衡动作的完成情况和技术动作进行三维运动学分析，找出影响该动作的生物力学因素，为教练员的教学和运动员的训练提供有价值的参考，进一步提高该动作的完成质量。  相似文献   

论诗歌语言的张力     

艾香玲 《武汉工程职业技术学院学报》2010,22(3):61-63

诗歌语言有别于其他文学样式的语言特色在于诗歌语言以其抽象词和具象词的嵌合、修辞的别具一格、词性的灵活变化、语法打破常规四个方面来体现张力和弹性。  相似文献   

静力拉伸对跆拳道运动员最大肌力及肌电的影响     

展凯  柳爱莲 《天津体育学院学报》2007,22(4):342-345

静力拉伸作为提高运动员柔韧性素质的主要手段之一，可以有效提高运动员柔韧素质，但有研究指出大强度、长时间静力拉伸会影响运动员的爆发力水平。对静力拉伸与无静力拉伸的情况进行实验对比分析，以30名近期腿部无大损伤的山东大学男性跆拳道专选学生为被试对象，对其分别施加蹬车和蹬车，拉伸两套不同方案的训练，然后对最大肌力、力量-时间曲线的主要指标，以及参与工作部位的肌电图进行对比分析，分析拉伸对运动员以上指标的影响，研究结果显示适量的拉伸练习不会显著地影响上述指标，从而提出适宜拉伸训练的负荷强度、时机，为科学训练提供依据。  相似文献   

Acute effects of different warm-up protocols on highly skilled golfers’ drive performance     

Ben L. Langdown  Jack E.T. Wells  Sean Graham  Matt W. Bridge 《Journal of sports sciences》2019,37(6):656-664

Previous research has highlighted the positive effect that different warm-up protocols have on golf performance (e.g. Sorbie et al., 2016; Tilley & Macfarlane, 2012) with the design of warm-ups and programmes targeting and improving golf performance through the activation and development of specific muscle groups. This study aimed to examine the acute effects of two warm-up protocols on golf drive performance in comparison to a control condition. Using a randomised counterbalanced design over three testing sessions, twenty-three highly skilled golfers completed the control, dynamic and resistance-band warm-up conditions. Following each condition, a GC2 launch monitor was used to record ball velocity and other launch parameters of ten shots hit with the participants’ own driver. A repeated-measures ANOVA found significant increases in ball velocity (η_p² = .217) between the control and both the dynamic and resistance-band warm-up conditions but no difference between these latter two, and a reduction in launch angle between control and dynamic conditions. The use of either a dynamic stretching or resistance-band warm-up can have acute benefits on ball velocity but golfers should liaise with a PGA Professional golf coach to effectively integrate this into their golf driving performance.  相似文献   

PNF法对改善柔韧性的作用   总被引：6，自引：0，他引：6  

黄彩华  黄咏梅 《泉州师范学院学报》2004,22(4):98-101,105

PNF法(本体感觉神经肌肉促进法)原先用于神经肌肉瘫痪病人的治疗，直到最近才被当作正常人改善肌肉柔韧性的伸展方法来使用，文章就PNF的含义、方法和机制、影响因素及改善正常人柔韧性作用和注意事项等作一综述．同时，对PNF在体育活动中的运用进行展望。  相似文献   

预应力纤维(PFRP)布锚固、张拉试验研究     

欧伟  刘荣桂 《实验室研究与探索》2007,26(5):34-38

根据近期开展的PFRP布受弯构件加固试验和多年的结构试验经验,并结合工程结构设计、施工经验,对PFRP布加固试验张拉、锚固关键问题提出了符合工程实际的解决方法而能用于工程实际。  相似文献   

Movement and stretching imagery during flexibility training     

Ineke Vergeer  Jenny Roberts 《Journal of sports sciences》2013,31(2):197-208

Abstract

The aim of this study was to examine the effect of movement and stretching imagery on increases in flexibility. Thirty volunteers took part in a 4 week flexibility training programme. They were randomly assigned to one of three groups: (1) movement imagery, where participants imagined moving the limb they were stretching; (2) stretching imagery, where participants imagined the physiological processes involved in stretching the muscle; and (3) control, where participants did not engage in mental imagery. Active and passive range of motion around the hip was assessed before and after the programme. Participants provided specific ratings of vividness and comfort throughout the programme. Results showed significant increases in flexibility over time, but no differences between the three groups. A significant relationship was found, however, between improved flexibility and vividness ratings in the movement imagery group. Furthermore, both imagery groups scored significantly higher than the control group on levels of comfort, with the movement imagery group also scoring significantly higher than the stretching imagery group. We conclude that the imagery had stronger psychological than physiological effects, but that there is potential for enhancing physiological effects by maximizing imagery vividness, particularly for movement imagery.  相似文献   

The Effects of Static Stretching and Warm-Up on Prevention of Delayed-Onset Muscle Soreness     

David M. High  Edward T. Howley  B. Don Franks 《Research quarterly for exercise and sport》2013,84(4):357-361

Abstract

It has been suggested in the lay literature that static stretching and/or warm-up will prevent the occurrence of Delayed-Onset Muscle Soreness (DOMS). The primary purpose of this study was to determine the effects of static stretching and!or warm-up on the level of pain associated with DOMS. Sixty-two healthy male and female volunteers were randomly assigned to four groups: (a) subjects who statically stretched the quadriceps muscle group before a step, (b) subjects who only performed a stepping warm-up, (c) subjects who both stretched and performed a stepping warm-up prior to a step test, and (d) subjects who only performed a step test. The step test (Asmussen, 1956) required subjects to do concentric work with their right leg and eccentric work with their left leg to voluntary exhaustion. Subjects rated their muscle soreness on a ratio scale from zero to six at 24-hour intervals for 5 days following the step test. A 4×2×2 ANOVA with repeated measures on legs and Duncan's New Multiple Range post-hoc test found no difference in peak muscle soreness among the groups doing the step test or for gender (p > .05). There was the expected significant difference in peak muscle soreness between eccentrically and concentrically worked legs, with the eccentrically worked leg experiencing greater muscle soreness. We concluded that static stretching and!or warm-up does not prevent DOMS resulting from exhaustive exercise.  相似文献   

改变头部位置对单杠屈身上动作质量的影响     

许鑫荣 《巢湖学院学报》2006,8(3):111-113,125

本文从多方面阐述了头部位置的改变,对单杠屈身上的影响,为学习正确的动作、提高动作的质量和教学效果提供科学依据。  相似文献