排序方式： 共有11条查询结果，搜索用时 15 毫秒
1.
通过教学实验,把超等长训练法应用于网球的接发球教学,运用数理统计法对实验数据进行分析。研究结果表明:实验组和对照组的一发和二发的接发球成功率无显著性差异,但实验组的有威胁接发球的百分率、接发球的平均时速及比赛成绩均明显优于对照组。超等长训练法可以提高学生的接发球水平,提高爆发能力,增长自信心,有助于赢得比赛的胜利。 相似文献
2.
George Giatsis Vassilios Panoutsakopoulos Iraklis A. Kollias 《Journal of sports sciences》2018,36(9):997-1008
The purpose of this study was to investigate the possible arm swing effect on the biomechanical parameters of vertical counter movement jump due to differences of the compliance of the take-off surface. Fifteen elite male beach-volleyball players (26.2 ± 5.9 years; 1.87 ± 0.05 m; 83.4 ± 6.0 kg; mean ± standard deviation, respectively) performed counter movement jumps on sand and on a rigid surface with and without an arm swing. Results showed significant (p < .05) surface effects on the jump height, the ankle joint angle at the lowest height of the body center of mass and the ankle angular velocity. Also, significant arm swing effects were found on jump height, maximum power output, temporal parameters, range of motion and angular velocity of the hip. These findings could be attributed to the instability of the sand, which resulted in reduced peak power output due to the differences of body configuration at the lowest body position and lower limb joints’ range of motion. The combined effect of the backward arm swing and the recoil of the sand that resulted in decreased resistance at ankle plantar flexion should be controlled at the preparation of selected jumping tasks in beach-volleyball. 相似文献
3.
Andrew J. Harrison 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):185-196
Many sport and exercise activities require powerful movements of the upper body. Despite their importance, there is a paucity of research examining stretch-shortening cycle (SSC) activities occurring in the upper limbs. The purpose of this study was to examine the effect of fatigue on throwing performance (height of throw) and biomechanical factors of the upper limbs (reactive strength index; hand contact time) using a specially constructed sledge apparatus for the upper body. Ten male subjects aged between 19 and 21 years performed a series of rebound throws (RBT) in a non-fatigued state to obtain a maximal baseline throw score. Subjects then performed a RBT fatiguing protocol on the upper body sledge followed by further RBT, at 15, 45, 120 and 300-seconds post fatigue. Markers on the subjects' limb and the sledge were analysed using Motion Analysis Corporation 3-D kinematic analysis system (200 Hz). Throwing height, contact time and reactive strength index were determined. Mean throwing height and reactive strength index showed significant decreases following fatigue and increases during recovery (p < 0.05). The results confirm the presence of post-activation potentiation (PAP) in RBT performance. This finding could be useful when optimising recovery periods in training or implementing complex training methods. 相似文献
4.
Daniel A. Hackett Timothy B. Davies Denis Ibel Stephen Cobley Ross Sanders 《Measurement in physical education and exercise science》2018,22(1):79-87
This study examined the predictive ability of the medicine ball chest throw and vertical jump for muscular strength and power in adolescents. One hundred and ninety adolescents participated in this study. Participants performed trials of the medicine ball chest throw and vertical jump, with vertical jump peak power calculated via an estimation equation. One-repetition maximum and peak power for the chest press and leg press were assessed using pneumatic exercise machines. The medicine ball chest throw strongly correlated with chest press one-repetition maximum and peak power, while the vertical jump peak power strongly correlated with leg press one-repetition maximum and peak power. The predictive ability of medicine ball chest throw was better than vertical jump peak power for muscular strength and power when controlling for sex, age, height, weight, and maturation, and was not affected by involvement in sports. Results show good predictive ability of the medicine ball chest throw for muscular strength and power in adolescents, while predictable ability of vertical jump peak power is weakened when other factors are taken into account. 相似文献
5.
Irineu Loturco Lucas Adriano Pereira Cesar Cavinato Cal Abad Facundo Tabares José Eduardo Moraes Ronaldo Kobal 《Journal of sports sciences》2017,35(8):734-741
This study aimed at testing whether there are mean propulsive velocities (MPVs) capable of maximising the mean propulsive power (MPP) during the execution of bench press (BP), bench throw (BT), half squat (HS) and jump squat (JS). Additionally, we assessed the differences in MPP/MPV between ballistic and traditional exercises. Seventeen male rugby sevens players performed MPP tests in BP, BT, HS and JS and maximum isometric force (MIF) tests in HS and BP. The JS presented higher MPP (977.4 ± 156.2 W) than the HS (897.9 ± 157.7 W) (P < 0.05); the BP (743.4 ± 100.1 W) presented higher MPP than the BT (697.8 ± 70.4 W) (P < 0.05). Ballistic exercises presented higher optimum MPV (JS = 1.02 ± 0.07 m·s?1; BT = 1.67 ± 0.15 m·s?1) than traditional exercises (HS = 0.93 ± 0.08 m·s?1; BP = 1.40 ± 0.13 m·s?1) (P < 0.05). The optimum MPP in the JS, BT, HS and BP occurred at 28.2 ± 5.79, 23.3 ± 4.24, 32.4 ± 9.46 and 27.7 ± 5.33% of the MIF, respectively. The coefficient of variation (CV) of MPV at optimum MPP ranged from 7.4% to 9.7%, while the CV of %MIF ranged from 18.2% to 29.2%. The MPV is a more precise indicator of the optimum loads than the percentages of MIF due to its low inter-subject variability as expressed by CV. Therefore, MPV can be used to determine the optimum power load in the four investigated exercises. 相似文献
6.
崔德刚 《河北体育学院学报》2011,25(5):64-68
篮球运动员的快速力量训练不仅仅是指爆发力训练,篮球运动员的起动力、反应力等快速力量对篮球运动员的竞技能力也有着非常重要的影响。最大力量训练法、＂Olympic lifting＂训练法、＂Ballistic＂训练法、＂Plyometrics＂训练法对提高运动员不同形式的快速力量都有一定的作用,但侧重提高的具体快速力量不同,在训练中要根据运动员快速力量的实际情况,选择适宜的训练方法进行有针对性的训练。 相似文献
7.
跳深练习作为一种提高弹跳力的方法被田径以及其他项目广泛采用,但在最佳跳深高度、跳深形式和负荷等方面存在着一定争议,因此,本文采用问卷调查、实验对比及数理统计等方法探讨跳深练习对提高弹跳力的影响效果,同时研究跳深练习与连续跳跃练习对提运动员弹跳力效果的优劣。结果显示:跳深练习在缩短男运动员起跳时间上优于连续跳跃练习;其他方面跳深练习都不优于连续跳跃练习效果。本文为提高运动员弹跳力训练效果练习手段的选择提供理论依据。 相似文献
8.
王健 《体育科技文献通报》2015,(3):88-89,122
跳深作为一种超等长练习形式,可有效发展肌肉的收缩速度与收缩能力,提高肌肉力量与弹跳力。本文通过实验法、文献资料法、数理统计法分析得出,不同跳深高度、跳深形式练习的选择对发展肌肉弹跳力不同,向上跳还是向前跳,单腿还是双腿,应依据运动竞赛项目的发力工作方式而定。 相似文献
9.
David Clutch Mike Wilton Carl McGown G. Rex Bryce 《Research quarterly for exercise and sport》2013,84(1):5-10
Abstract In recent years, a method of plyometrics (exercises that cause a rapid lengthening of a muscle prior to contraction) called depth jumping has become a part of the training routine of many athletes. Two experiments are described in which the effectiveness of the exercises is examined. In Experiment 1, undergraduate students in beginning weight training classes trained with three different jumping programs: (1) maximum vertical jumps, (2) 0.3 m depth jumps, and (3) 0.75 m and 1.10 m depth jumps. In addition, all groups also lifted weights. In Experiment 2, a weight training class and the volleyball team at Brigham Young University-Hawaii were divided into two groups. One group lifted weights and performed 0.75 and 1.10 m depth jumps. The other group only lifted weights. In Experiment 1, the three training programs resulted in increases in one repetition maximum (1 RM) squat strength, isometric knee extension strength, and in vertical jump; however, there were no significant differences between treatments. In Experiment 2, all groups made significant increases in vertical jump, except the group of weight lifters, who did no jumping. It was concluded that depth jumps are effective but not more effective than a regular jumping routine. 相似文献
10.
试析田径运动爆发力训练的有效途径 总被引：11，自引：0，他引：11
本文采用文献资料和对比分析的研究方法，对在田径训练实践中经常使用的大重量力量训练、快速小重量力量训练、超等长训练这3种发展运动员爆发力的手段，从动作形式、动作速度和对神经肌肉刺激等方面进行生理学、动力学和运动学的分析，认为：(1)有效的爆发力训练手段应具有肌肉在作向心运动时，具有始终处于作加速运动状态的特征，超等长训练手段就具有这种特征。(2)有效的爆发力训练应是传统力量练习和超等长练习的完善结合。旨为找出在运动中发展爆发力的有效途径。 相似文献