共查询到20条相似文献，搜索用时 109 毫秒
1.
2.
以2000～2001年“步步高杯”全国排球甲级联赛第4轮8个参赛队为统计对象，以中南大学南方排球队4名主力队员为实验对象，将脚击球技术运用到排素比赛中进行比较研究，表明脚击球技术在比赛中有较大的潜力可挖，当球飞行距离较短和起远距离低位球时脚击球成功率高于手击球。 相似文献
3.
有一种通俗的说法形容步法在乒乓球运动中的作用:七分脚,三分手。这种说法虽未必科学,但步法在一个完整的击球动作中是不可或缺的。作为乒乓球击球技术动作的直观形态,我们看到的就是选手们在不断跑动中完成击球。好的步法能够使选手寻找到最佳击球位置,且运动水平越高, 相似文献
4.
槌头贴脚击球法的准确率较高,已被众多门球爱好者采用。在实践中,本人又初步摸索出“槌头贴脚不后拉击球法”,并获得了较好的效果。现简要介绍如下,供球友们参考。一、球槌。球槌要选用槌头长24厘米,槌柄长100厘米左右为好。长槌头与脚的长度相近,击球时槌头始终贴脚滑行,准确率高。槌柄的高矮要依击球人的身材高矮来 相似文献
5.
谈排球脚击球的历史及现状 郑焕然,张丽随着排球运动在世界范围内的普及,为争取更多的观众和商家赞助,使排球比赛在紧张激烈之余更具有观赏性,国际排联对击球范围和判罚尺度一再扩大和放宽,最后规则将击球部位扩大到身体的任何部位,也就是说排球规则允许脚击... 相似文献
6.
静贴腕击球法是集静棒、贴脚、腕力这三种击球法的优点于一体的击球法。静棒击球是槌头前端面直接向前击打自球击点,没有后拉动作,它减少了槌头先后拉、再前冲容易出现的摆动。贴脚击球是击球员左脚前伸,使槌头外侧微贴左脚内侧前部凸出部位,并使槌头前、后端面准确地放在四点一线的瞄准线上,形成正确的击球轨道,这样有助于防止击偏的问题。腕力击球是击球员的两个大臂夹紧胳肢身躯,小臂贴紧前腹部,使大臂固定不动,小臂相对固定,只用手腕力量击球,以减少槌头前冲时的晃动,提高击球精度。将静棒、贴脚和腕力三种击球法的长处合而为一地加以熟练掌握,是对原有击球法的改进和完善,击球效果会明显提高。在掌握这一击球法时要注意三点: 相似文献
7.
8.
足球比赛中球员对一切技战术的执行都是为了最终的射门得分,由于足球运动的特点用脚射门得分是及其重要的手段。足部不同部位射门的技术分为助跑、支撑、摆腿、击球、随前五个动作衔接技术环节,而支撑在整个技术环节中尤为重要,支撑脚稳定的支撑是整个技术环节的基础。 相似文献
9.
10.
简介毽球脚攻球技术的要点 总被引：1，自引：0，他引：1
张选民 《体育成人教育学刊》1994,(Z2)
简介毽球脚攻球技术的要点武汉食品工业学院张选民由于限制线距离加长，限制区扩大，对头攻球无利，因此，许多毽球队奔头攻改脚攻，加强脚攻球的训练。为便利各队训练，提高和发展脚击球进攻的新技术，现将目前已实用的几种脚攻球技术介绍如下：一、倒钩球这个动作要领，... 相似文献
11.
Kinematic differences between front crawl sprint and distance swimmers at a distance pace 总被引：1，自引：1，他引：0
The purpose of the study was to determine whether there are differences in kinematics between sprint and distance front crawl specialists when swimming at a distance pace using a six beat kick. Seven sprint and eight distance male specialists performed one maximum 400 m swim through a 6.75 m3 calibrated space recorded by six gen-locked cameras. The following variables were calculated: average swim velocity, stroke length, stroke frequency, upper limb and foot displacement, elbow angle, the shoulder and hip roll angle, duration of the stroke phases and time corresponding to particular events within the stroke cycle relative to hand entry. Differences between the groups were assessed by an independent t-test and effect size (d) calculations for each variable. The groups only differed significantly with respect to the average swim velocity, with the distance swimmers maintaining a greater velocity throughout the 400 m. However, effect sizes were moderate for elbow angle range during the pull phase (d = 0.78) and the total hip roll magnitude (d = 0.76). There was little evidence to suggest that sprint and distance swimmers using a six beat kick pattern differ in technique when swimming at a distance pace and therefore coaches should not encourage the development of different techniques between these groups. 相似文献
12.
Abstract The purpose of the study was to determine whether there are differences in kinematics between sprint and distance front crawl specialists when swimming at a distance pace using a six beat kick. Seven sprint and eight distance male specialists performed one maximum 400 m swim through a 6.75 m3 calibrated space recorded by six gen-locked cameras. The following variables were calculated: average swim velocity, stroke length, stroke frequency, upper limb and foot displacement, elbow angle, the shoulder and hip roll angle, duration of the stroke phases and time corresponding to particular events within the stroke cycle relative to hand entry. Differences between the groups were assessed by an independent t-test and effect size (d) calculations for each variable. The groups only differed significantly with respect to the average swim velocity, with the distance swimmers maintaining a greater velocity throughout the 400 m. However, effect sizes were moderate for elbow angle range during the pull phase (d = 0.78) and the total hip roll magnitude (d = 0.76). There was little evidence to suggest that sprint and distance swimmers using a six beat kick pattern differ in technique when swimming at a distance pace and therefore coaches should not encourage the development of different techniques between these groups. 相似文献
13.
评定有氧工作能力指标的探讨 总被引：2，自引：0，他引：2
刘洵 《天津体育学院学报》1995,10(4):18-20
对不同训练水平、不同性别的６０名受试者进行了摄氧量、心率及氧脉搏的测定，其目的是通过比较优选评定有氧工作能力的指标。结果显示：在此方面，由于公斤体重的氧脉搏可同时消除体重和心率等因素的影响，故它比最大摄氧量更为客观。 相似文献
14.
Hong Y Wang L Xu DQ Li JX 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(2):85-97
One important extrinsic factor that causes foot deformity and pain in women is footwear. Women's sports shoes are designed as smaller versions of men's shoes. Based on this, the current study aims to identify foot shape in 1,236 Chinese young adult men and 1,085 Chinese young adult women. Three-dimensional foot shape data were collected through video filming. Nineteen foot shape variables were measured, including girth (4 variables), length (4 variables), width (3 variables), height (7 variables), and angle (1 variable). A comparison of foot measures within the range of the common foot length (FL) categories indicates that women showed significantly smaller values of foot measures in width, height, and girth than men. Three foot types were classified, and distributions of different foot shapes within the same FL were found between women and men. Foot width, medial ball length, ball angle, and instep height showed significant differences among foot types in the same FL for both genders. There were differences in the foot shape between Chinese young women and men, which should be considered in the design of Chinese young adults' sports shoes. 相似文献
15.
《运动与健康科学(英文)》2022,11(3):330-338
BackgroundThe ankle and foot together contribute to over half of the positive and negative work performed by the lower limbs during running. Yet, little is known about how foot kinetics change throughout a run. The amount of negative foot work may decrease as tibialis anterior (TA) electromyography (EMG) changes throughout longer-duration runs. Therefore, we examined ankle and foot work as well as TA EMG changes throughout a changing-speed run.MethodsFourteen heel-striking subjects ran on a treadmill for 58 min. We collected ground reaction forces, motion capture, and EMG. Subjects ran at 110%, 100%, and 90% of their 10-km running speed and 2.8 m/s multiple times throughout the run. Foot work was evaluated using the distal rearfoot work, which provides a net estimate of all work contributors within the foot.ResultsPositive foot work increased and positive ankle work decreased throughout the run at all speeds. At the 110% 10-km running speed, negative foot work decreased and TA EMG frequency shifted lower throughout the run. The increase in positive foot work may be attributed to increased foot joint work performed by intrinsic foot muscles. Changes in negative foot work and TA EMG frequency may indicate that the TA plays a role in negative foot work in the early stance of a run.ConclusionThis study is the first to examine how the kinetic contributions of the foot change throughout a run. Future studies should investigate how increases in foot work affect running performance. 相似文献
16.
Youlian Hong Lin Wang Dong Qing Xu 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):85-97
One important extrinsic factor that causes foot deformity and pain in women is footwear. Women's sports shoes are designed as smaller versions of men's shoes. Based on this, the current study aims to identify foot shape in 1,236 Chinese young adult men and 1,085 Chinese young adult women. Three-dimensional foot shape data were collected through video filming. Nineteen foot shape variables were measured, including girth (4 variables), length (4 variables), width (3 variables), height (7 variables), and angle (1 variable). A comparison of foot measures within the range of the common foot length (FL) categories indicates that women showed significantly smaller values of foot measures in width, height, and girth than men. Three foot types were classified, and distributions of different foot shapes within the same FL were found between women and men. Foot width, medial ball length, ball angle, and instep height showed significant differences among foot types in the same FL for both genders. There were differences in the foot shape between Chinese young women and men, which should be considered in the design of Chinese young adults’ sports shoes. 相似文献
17.
文章运用访谈法、文献资料法等研究方法,从膝关节的解剖学和生物力学特征的角度论证了“摆”、“扣”在太极拳教学中的地位和作用,并指出:太极拳练习中不能正确地运用“摆”、“扣”是造成膝关节损伤的最主要致因,正确地掌握和运用“摆”、“扣”技术是预防和避免膝关节损伤的关键. 相似文献
18.
足底压力测量技术的发展现状与应用研究 总被引：17，自引：1，他引：16
伴随着新型传感器技术的压力测量仪器的发展与计算机技术的广泛应用,足底压力测量技术在运动生物力学步态研究,临床步态研究以及临床医疗中积极应用,其技术不断的发展、成熟.足底压力研究,揭示了人体在不同状态下的足底压力分布特征和模式,以及运动过程中足的动力性特征.同时,足底压力测量技术在临床步态研究和临床医疗中的不断应用与深入,已逐渐成为临床生物力学研究和诊断病足与足部康复评定的重要手段.通过足-鞋界压力的研究,也为指导人们健康穿鞋与科学制鞋带来了科学理论依据. 相似文献
19.
运用文献资料法、实验法和数理统计法,以10名辽宁省排球队女运动员为研究对象,获取受试者3步助跑后衔接跳跃扣球的起跳期在三维空间坐标中的轨迹和与地面的反作用力参数,以及髋关节、膝关节、踝关节的最大伸肌力矩和最大伸肌功率,研究排球不同扣球起跳下肢运动学的特征,为提高排球扣球起跳时的动作质量提供参考。结果表明:(1)后排先行脚、跟随脚的动作时间、动作总时间短于后排,后排起跳动作距离长于前排(P<0.01);(2)先行脚和跟随脚的髋关节、膝关节伸肌力矩后排大于前排(P>0.05);在踝关节伸肌力矩中,后排的先行脚大于前排(P>0.05),后排的跟随脚大于前排(P<0.05);(3)除先行脚的膝关节向心功率后排均小于前排外,先行脚和跟随脚的髋关节、膝关节、踝关节伸肌向心功率后排均大于前排。先行脚和跟随脚的髋关节、膝关节肌坏踝关节离心功率后排大于前排。 相似文献
20.
Footedness in world soccer: an analysis of France '98. 总被引：1，自引：1，他引：0
D P Carey G Smith D T Smith J W Shepherd J Skriver L Ord A Rutland 《Journal of sports sciences》2001,19(11):855-864
Most football players and coaches agree that players are capable of learning to use both feet with equal frequency and efficiency--that is, become 'two-footed'. There is also some consensus that two-footed play is associated with skill in individual players. If these assumptions are true, then the world's elite football players should be substantially less 'one-footed' than the rest of the population. To examine this issue, we quantified the pattern of foot use in a sample of 236 players from 16 teams in the 1998 World Cup (France '98). Our findings indicate that World Cup players are as right-footed as the general population (approximately 79%). The remaining players were largely left-footed and as biased towards the use of their preferred foot as their right-footed counterparts. Very few players used each foot with equal frequency. Remarkably, both left- and right-footed players were as skilled, on average, with their non-preferred foot as they were with their preferred foot, on the rare occasions when they used it. Therefore, it is unlikely that infrequent use of one foot compared to the other foot can be accounted for by skill differences between the feet. Players were most asymmetrical for set pieces; nevertheless, first touches, passes, dribbles and tackles were rarely performed with the non-preferred foot as well. Our results support a biological model of foot preference and performance, as well as demonstrating the usefulness of soccer for studies of lateral asymmetries. 相似文献