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对北京市6所普通高校43名男篮队员的专项身体素质进行测评,经因子分析和回归分析等方法筛选出了影响运动训练水平的30m起动跑、助跑摸高、穿梭跑、28m×10折返跑等4个有效因子,并进一步提出了简易综合评定方法,为大学生男篮运动员身体训练水平评定提供了参考依据。 相似文献
2.
摘要：目的：分析我国优秀U17足球运动员专项灵敏和耐力素质，并建立评价等级标准。主要运用场地测试法、数理统计法，对全国优秀的U17男子足球运动员进行专项灵敏和耐力素质测试和分析，分析结果为：1）按照优良中下差等级划分标准，曲线跑为9.05s以下、9.06~9.40s、9.41~10.20s、10.21~10.70s、10.71s以上；四线往返跑为9.60s以下、9.61~9.90s、9.91~10.60s、10.61~10.90s、10.91s以上。YOYO间歇性耐力跑为3601m以上、3231~3600m、2201~3230m、1951~2200m、1950m以下；2）平均值方面，曲线跑为9.88±0.66s；四线往返跑为10.27±0.53s；YOYO间歇性耐力跑为2754.30±672.37m。得出以下结论：1）足球运动中，曲线跑和四线往返跑是反映专项灵敏的代表性指标，YOYO间歇性耐力跑是反映专项耐力的代表性指标。运用离差法可以客观准确的建立足球运动员专项灵敏和专项耐力评分表和评价等级标准。2）我国U17男子足球运动员的专项灵敏和耐力水平分布比较分散，其位置特征总体表现为专项灵敏素质：前锋>前卫>守门员>后卫；专项耐力素质：前卫>后卫 >前锋>守门员。 相似文献
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This paper responds in part to a special edition of this journal (39/2) on dual-mode provision. We were concerned that contact providers might drift into distance education provision through extending campus-based online learning without first thinking through the underpinning implications of its administrative systems, an issue that was not addressed in the special edition. Proceeding from a pragmatic and constructivist perspective, while adopting a transactional orientation drawing on systems theory and hermeneutics, this paper focuses on the challenge for administrative staff and systems of the changing nature of provision in terms of both the underpinning learning and business models. Based on experience and reflection, we conclude that the move into dual- and multimode provision is inevitable and that this requires agility on the part of both administrative staff and systems that is often overlooked in planning and review processes. 相似文献
4.
As a core organizational resource, business processes are vital for organizational teams. To deal with today’s volatile business environment, organizations need to be ambidextrous in terms of process capabilities. However, little is known about how process ambidexterity, process standardization, and process agility, are enabled by information technology (IT) and related to team-level activities. To fill this gap in the literature, we conducted a field study based on 160 teams of 1081 individuals from seven companies in South Korea. Our results show that IT enables both process standardization and agility, and that a team’s process ambidexterity has a positive effect on inter-team coordination and team innovation, which in turn have a direct impact on team performance. Our findings highlight the importance of process ambidexterity by investigating the enabling role of IT and its outcomes in a team. Our results offer theoretical and practical implications from the perspective of team process ambidexterity. 相似文献
5.
运用文献资料法和逻辑分析法对近十年网球体能训练理论相关论文进行综述,结果发现,中国网球体能训练理论研究起步较晚,取得科研立项的较少;网球相关体能训练论文虽多,但整体科研质量有待提高;目前的体能训练研究多集中在身体形态、技能和素质方面,对网球体能指标体系、体能训练结构模型及体能水平的评价研究尚不多见。因此,体能训练要加大安排体能训练的比例,根据网球专项特征科学实施理论素质、速度素质和耐力素质训练;混合供能训练并根据赛制特点进行以赛促练。 相似文献
6.
Antoine Fortier René A. Turcotte 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(4):341-350
Ice hockey requires rapid transitions between skating trajectories to effectively navigate about the ice surface. Player performance relates in large part to effective change-of-direction manoeuvres, but little is known about how those skills are performed mechanically and the effect of equipment design on them. The purpose of this study was to observe the kinetics involved in those manoeuvres as well as to compare whether kinetic differences may result between two skate models of varying ankle mobility. Eight subjects with competitive ice hockey playing experience performed rapid lateral (90°) left and right change-of-direction manoeuvres. Kinetic data were collected using force strain gauge transducers on the blade holders of the skates. Significantly greater forces were applied by the outside skate (50–70% body weight, %BW) in comparison to the inside skate (12–24%BW, p < 0.05). Skate model and turn direction had no main effect, though significant mixed interactions between leg side (inside/outside) with skate model or turn direction (p < 0.05) were observed, with a trend for left-turn dominance. This study demonstrates the asymmetric dynamic behaviour inherent in skating change-of-direction tasks. 相似文献
7.
Álvaro López-Samanes Diego Moreno-Pérez José L. Maté-Muñoz Raúl Domínguez Jesús G. Pallarés Ricardo Mora-Rodriguez 《Journal of sports sciences》2017,35(21):2121-2128
To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS), agility T-test (AGIL) and a 10-m sprint (10-m RUN). In a randomised, counter-balance order, tennis players underwent the test battery twice, either in the morning (i.e., AM; 9:00 h) and in the afternoon (i.e., PM; 16:30 h). Paired t-tests were used to analyse differences due to time-of-day in performance variables. Comparison of morning versus afternoon testing revealed that SVA (168.5 ± 6.5 vs. 175.2 ± 6.1 km · h?1; P = 0.003; effect size [ES] = 1.07), CMJ (32.2 ± 0.9 vs. 33.7 ± 1.1 cm; P = 0.018; ES = 1.46), AGIL (10.14 ± 0.1 vs. 9.91 ± 0.2 s; P = 0.007; ES = 1.23) and 10-m RUN time (1.74 ± 0.1 vs. 1.69 ± 0.1 s; P = 0.021; ES = 0.67) were significantly blunted during the morning testing. However, IS was not affected by time-of-day (P = 0.891). Thus, tennis performance may be reduced when competing in the morning in comparison to early evening. Therefore, coaches and tennis players should focus on schedule the SVA, power, speed and agility training sessions in the afternoon. 相似文献
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对运动协调归属问题的探析 总被引：7，自引：0，他引：7
运动员的协调能力与运动水平、竞技能力密切相关。运动协调的内在机制相对复杂，在其归属问题上，还存在认识上的分歧。在综述当前对“运动协调”归属划分的几种观点的基础上，提出运动协调是一种具体的客观存在的观点。认为，协调性归属于身体素质范畴，协调性与灵敏性之间存在着一定的联系，即协调性是灵敏性的基础，两者表现方式不同。 相似文献
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试论运动灵敏性的概念及其分类 总被引：2，自引：0，他引：2
从生理学、心理学和词义学视角对运动灵敏性进行解读,运用逻辑论证和统计学论证的方法对运动中的灵敏性概念和分类问题进行探讨后认为,体育运动中的灵敏性定义为处在特定运动场景中的肢体感受刺激,并根据需要迅速改变方向或变换动作的能力.并将运动灵敏性分为判断与决策能力、变换动作能力和改变方向能力三类. 相似文献
10.
傅森 《开封教育学院学报》2010,30(1):108-110
高职体育教学改革应在增强学生身心素质的同时,有针对性地提出干预措施,以提升学生对岗位工作环境的适应能力;还应将学生体育技能的形式与学生胜任职业所需的体能训练结合起来,增强学生就业与从业的竞争力。 相似文献