国家乒乓球教练员团队管理行为特征的心理学探究

中国乒乓球队的教练员团队在国际乒坛创造了世人公认的业绩,他们在管理上有许多值得总结、值得借鉴的经验。从管理心理学的角度对这个团队教练员的心理行为特征进行研究,并着重论述了这个团队教练员班子的精神动力、业务素质、人格特点、用人机制以及管理理念与方法等问题。     

Exercise does not increase salivary lymphocytes,monocytes, or granulocytes,but does increase salivary lysozyme

An increase in salivary leukocytes may contribute to the exercise-induced increase in salivary antimicrobial proteins (AMPs). However, exercise-induced changes in salivary leukocytes have not been studied. The purpose of the study was to describe salivary leukocyte changes with exercise. Participants (n = 11, 20.3 ± 0.8 years, 57.2 ± 7.6 ml kg^?1 min^?1 peak oxygen uptake ((VO) ?₂peak), 11.1 ± 3.9% body fat) ran for 45 min at 75% of VO_2peak. Stimulated saliva (12 mL) was collected pre- and immediately post exercise. Saliva was filtered through a 30 µm filter before analysis of leukocytes (CD45⁺), granulocytes (CD45⁺CD15⁺), monocytes (CD45⁺CD14⁺), T-cells (CD45⁺CD3⁺), and B-cells (CD45⁺CD20⁺) using flow cytometry. Saliva was analysed for Lysozyme (Lys) using ELISA. Exercise did not alter any leukocyte subset. The major constituent of leukocytes pre-exercise were granulocytes (57.9 ± 30.3% compared with monocytes: 5.1 ± 2.7%, T-cells: 17.1 ± 8.9%, B-cells: 12.1 ± 10.2%) (P < 0.05). In a subset of n = 6, Lys secretion rate increased after exercise (pre: 5,170 ± 5,215 ng/min; post: 7,639 ± 4,140 ng/min) (P < 0.05). Exercise does not result in increased granulocytes, but does increase Lys. Further, these data suggest that an increase in salivary leukocytes is not needed to increase Lys.     

Anthropometric and physical performance characteristics of top-elite,elite and non-elite youth female team handball players

In order to maximise the potential for success, developing nations need to produce superior systems to identify and develop talent, which requires comprehensive and up-to-date values on elite players. This study examined the anthropometric and physical characteristics of youth female team handball players (16.07 ± 1.30 years) in non-elite (n = 47), elite (n = 37) and top-elite players (n = 29). Anthropometric profiling included sum of eight skinfolds, body mass, stature, girths, breadths and somatotype. Performance tests included 20 m sprint, counter-movement jump, throwing velocity, repeated shuttle sprint and jump ability test, and Yo-Yo Intermittent Recovery Test Level 1. Youth top-elite players had greater body mass, lean mass, stature, limb girths and breadths than elite and non-elite players, while only stature and flexed arm were higher in elite compared to non-elite players (all P < 0.05). Sum of skinfolds and waist-to-hip ratio were similar between groups (P > 0.05). Top-elite performed better in most performance tests compared to both elite and non-elite players (P < 0.05), although maximal and repeated 10 m sprints were similar between playing standards (P > 0.05). Elite outperformed non-elite players only in throwing velocity. The findings reveal that non-elite players compare unfavourably to top-elite international European players in many anthropometric and performance characteristics, and differ in a few characteristics compared to elite European club team players. This study is useful for emerging team handball nations in improving talent identification processes.     

2018年世界杯亚洲区预选赛A组中国队与对手攻防及进球特征对比分析

采用文献资料法、录像观察法、综合分析法等,对2018年世界杯亚洲区预选赛12强赛A组球队中国队和对手的攻防等级以及进球特征进行对比分析,结果显示:(1)中国队进攻实力一般化,把握机会的能力较差,场面上往往是得势不得分;(2)中国队防守实力较差是造成排名不利的重要原因,尤其是对于球门的保护还需要进一步加强;(3)中国队临门一脚的把握性以及攻击性还需大幅度提升.     

Chronic participation in externally paced,but not self-paced sports is associated with the modulation of domain-general cognition

Abstract

The present study investigated the role of chronic sport participation in the modulation of vigilance and inhibitory control. We also aimed to disentangle the relative contribution of different types of sport expertise and sport-related fitness to the exercise-cognition relationship. Three groups of young adults differing in their chronic sport expertise (externally-paced sports, n?=?22, self-paced sports, n?=?22, non-athletes, n?=?22) took part in the study. Participants completed a cardiovascular fitness test, a hand-eye coordination test and two different types of vigilance tasks: (1) Psychomotor Vigilance Task (PVT) and (2) Oddball Task, which were designed to gain insight into the cognitive processes involved in sustaining attention over time and allocating selective attention by exerting inhibitory control, respectively. No differences were found in PVT performance between the two athlete groups and between self-paced sports athletes and non-athletes, whereas athletes from externally-paced sports outperformed non-athletes. Crucially, athletes from externally-paced sports also differed from those of self-paced sports and non-athletes in the Oddball task, showing less omission and commission errors. The sport expertise effect was independent of participant’s cardiovascular fitness while hand-eye coordination modulated vigilance and inhibitory control performance. Our findings add novel empirical evidence to the role of expertise in cognitively demanding sports as an important factor in the relationship between exercise and cognition.     

Health locus of control predicts free-living, but not supervised, physical activity: a test of exercise-specific control and outcome-expectancy hypotheses

We statistically controlled fitness (1.5-mile run), outcome-expectancy values, and perceived barriers for physical activity and then compared internal health locus of control (IHLOC) with internal exercise locus of control (IEXLOC) for predicting the physical activity of college students (N = 84). Prospective observations of self-reported free-living physical activity (seven-day recall) and supervised running (time x distance) were made at 2-, 5-, and 9-week intervals. IHLOC predicted seven-day recall at Week 2 (beta = .19) and Week 5 (beta = .36) (increase in adjusted R2 ranged from .05 to .12, p less than .05). Consistent with theory, the prediction was not reproducible when generalized outcome-expectancy value rather than outcome-expectancy value for health was assessed. IHLOC was unrelated to supervised running. IEXLOC was unrelated to activity in all analyses, even though exercise-specific measures of outcome-expectancy values (beta s = .20) and perceived barriers (beta s = .27-.32) predicted both seven-day recall and supervised running (p less than .05). IHLOC also discriminated (p less than .05) high active and low active subjects when criterion groups were formed from population norms on seven-day recall (greater than or less than 280 kcal.kg-1.week-1). Results indicate that tests of decision theories that include locus of control measures specific to health or exercise must adjust for fitness, perceived barriers to physical activity, and behaviorally relevant outcome-expectancy values of physical activity when studying college students. The construct validity of exercise locus of control remains uncertain for college students.     

The impact of start strategy on start performance in alpine skiing exists on flat,but not on steep inclines

Here, we explored the relationship between incline and start strategy during alpine skiing. Eight FIS skiers performed starts on a flat (3°) and steep (21°) incline employing five different strategies. Their times, trajectories and velocities were monitored with a GNSS system and video. A significant interaction was observed between slope incline and start strategy with respect to the skier’s exit velocity (p < 0.001, ?²_p = 0.716), but not for the start section time (p = 0.732, ?²_p = 0.037). On the almost flat incline, both section time (p = 0.022, ?²_p = 0.438) and exit velocity (p < 0.001, ?²_p = 0.786) were influenced significantly by start strategy, with four V2 skate-pushes being optimal. On the steep incline, neither section time nor exit velocity was affected significantly by start strategy, the fastest section time and exit velocity being attained with four and two V2 skate-pushes, respectively. In conclusion, these findings demonstrate that the start strategy exerts considerable impact on start performance on almost flat inclines, with strategies involving three or more V2 skate-pushes being optimal. In contrast, start performance on the steep incline was not influenced by strategy.     

“健康第一而不是惟一”——对高校体育改革中教育思想的进一步认识

“健康第一”教育思想的提出，不仅明晰了学校体育在教育中的地位，同时也为深化高等学校体育改革指明了方向。高等学校体育只是学校教育的一个部分，“健康第一”的教育思想是适用多种学科教育的，复合型人才应是全面发展的，把学校体育的指导思想等同于学校教育思想，无疑是偏颇的。     

2014年亚洲冠军杯小组赛进球特征研究--以中、韩、日球队为例

通过对2014亚洲冠军杯中、韩、日俱乐部小组赛进球特征分析,找出中国俱乐部与韩、日俱乐部在进球特征上的差异,并具体分析原因,以期为中国俱乐部打好以后的亚冠小组赛、取得优异成绩提供科学依据。     

‘I actually used to like PE,but not now’: understanding care-experienced young people’s (dis)engagement with physical education

Young people’s experiences of, and (dis)engagement with, physical education has received considerable attention in recent years. Yet one ‘group’, care-experienced young people, remain ‘hidden’ within the prevailing literature. In light of their apparent invisibility within research, this novel, exploratory study seeks to gain some understanding of the factors associated with (dis)engagement from/with physical education among this youth population. In contrast to the few studies that explore the broader physical culture experiences of care-experienced youth that prioritise the voices of adults, this paper combines data from two studies to give voice to the experiences of four care-experienced young men in England, alongside those of key adults, namely residential staff, foster carers and physical education teachers. Data were derived from participatory research methods with the young people and semi-structured interviews with the adults who work with/for them. Drawing upon Bourdieu, principally his notions of field, habitus and capital, the findings suggest that these care-experienced young people are at a pedagogic disadvantage, since they are not as well positioned to access opportunities for learning and participation or develop, maintain and extend those skills and dispositions that are recognised as valued capital in physical education. Moreover, the changing room, as a sub-field of the broader physical education space, where bodies are particularly on display, may present obstacles for care-experienced young people’s engagement due to their prior experiences of physical and/or sexual abuse. This study therefore calls for further research exploring care-experienced young people’s experiences of physical education, teachers’ understandings of care-experienced youth, and how their pedagogic practice might shape (dis)engagement with physical education.     

系统科学视角下高水平散打运动员竞技能力系统结构、特征及运行机制研究

以系统科学基本原理为指导,以竞技能力“五要素论”为基础对高水平散打运动员竞技能力系统结构、特征及运行机制展开研究.高水平散打运动员竞技能力系统结构呈现层级性,不同层级由不同要素构成,同一层级内子能力、要素之间相互联系、相互作用、相互制约,竞技能力运行是一个由低级向高级逐级整合的过程;整体性、关联性、动态性、层级性、自组织性和非均衡性为高水平散打运动员竞技能力系统主要特征;适应是高水平散打运动员竞技能力系统演化、发展的根据,竞技能力系统运行遵循标识机制、响应机制和积木机制.