Mediating effects of resistance training skill competency on health-related fitness and physical activity: the ATLAS cluster randomised controlled trial

The purpose of this study was to examine the mediating effect of resistance training skill competency on percentage of body fat, muscular fitness and physical activity among a sample of adolescent boys participating in a school-based obesity prevention intervention. Participants were 361 adolescent boys taking part in the Active Teen Leaders Avoiding Screen-time (ATLAS) cluster randomised controlled trial: a school-based program targeting the health behaviours of economically disadvantaged adolescent males considered “at-risk” of obesity. Body fat percentage (bioelectrical impedance), muscular fitness (hand grip dynamometry and push-ups), physical activity (accelerometry) and resistance training skill competency were assessed at baseline and post-intervention (i.e., 8 months). Three separate multi-level mediation models were analysed to investigate the potential mediating effects of resistance training skill competency on each of the study outcomes using a product-of-coefficients test. Analyses followed the intention-to-treat principle. The intervention had a significant impact on the resistance training skill competency of the boys, and improvements in skill competency significantly mediated the effect of the intervention on percentage of body fat and the combined muscular fitness score. No significant mediated effects were found for physical activity. Improving resistance training skill competency may be an effective strategy for achieving improvements in body composition and muscular fitness in adolescent boys.     

中国皮划艇国家二队功能动作筛查的应用研究

运用文献资料法、测试法、问卷调查法、专家访谈法和数理统计法对国家皮划艇青年队进行功能动作筛查测试,根据测试结果为备战2020年奥运会提供数据及理论的支持。通过研究发现:划艇运动员的总分情况整体优于皮艇运动员;大部分运动员髋、膝、踝三关节在单一的运动平面中具有较好的协调和稳定性,但在两个以上的运动平面中完成动作的稳定和控制能力有待提高;运动员的髋关节、肩关节及股四头肌柔韧性存在不平衡现象,左侧链与右侧链在多运动平面中协调稳定性也存在不平衡现象;运动员的损伤率较高,且损伤的主要部位是肩和腰。     

新农村体育公共服务实施均等化长效机制研究

从“新农村建设”的内涵入手,从农村体育公共服务的监督体系、体育价值、管理规划、供给方式等方面系统分析了参与“新农村体育公共服务实施均等化”的影响因素。研究显示：建立有效的监督体系,新型的价值观,完善的规划体系,多元供给模式,完善的法律保障体系等措施可有效保证“新农村体育公共服务均等化”的实施。     

大连市青少年校园足球发展战略创新研究

采用文献资料法、访谈法、问卷调查法,对大连市校园足球的开展现状进行调查,分析目前新校园足球的理念和效能作用,提出大连市新校园足球发展战略构想和创新模式,以校园足球为突破口,带动学校体育综合改革,以期促进校园足球健康持续发展。     

中小学音乐教师:新课程实施的调适

音乐基础课程改革对中小学音乐教师提出了全新的要求。本文从教师理念的更新、教师自身知识技能的调适、教学模式的转换三方面，论述了中小学音乐教师在新课程实施过程中应进行的调整与适应。     

美国新中亚战略浅析

针对近年来对美国中亚战略研究的状况,文中提出了两个值得思考的问题:一,如何界定中亚范畴?二,美国的新中亚战略到底“新”在哪里?并对此作出了自己的回答。     

国际经验对建构中国教师教育新体系的启示

网络化时代的到来、全球经济的发展、知识经济的出现呼唤国际性和创新型人才。中国“普九”任务基本完成。基础教育课程改革深入开展，使以提高教师实施素质教育的能力和水平为重点的教师专业化走向新历程。这是中国教师教育新体系构建的时代背景。国际教师教育经验为建构中国教师教育新体系提供了启示。     

新时期高校学生党建工作探索

做好新时期学生党建工作是高校责无旁贷的历史使命.本文就新时期高校学生党建工作的重大战略意义及面临的挑战做了探讨和分析,对新时期高校学生党建工作应遵循的原则及在工作中要正确处理好的几个关系进行了探索.     

Effect of gender on trunk and pelvis control during lateral movements with perturbed landing

In lateral reactive movements, core stability may influence knee and hip joint kinematics and kinetics. Insufficient core stabilisation is discussed as a major risk factor for anterior cruciate ligament (ACL) injuries. Due to the higher probability of ACL injuries in women, this study concentrates on how gender influences trunk, pelvis and leg kinematics during lateral reactive jumps (LRJs). Perturbations were investigated in 12 men and 12 women performing LRJs under three different landing conditions: a movable landing platform was programmed to slide, resist or counteract upon landing. Potential group effects on three-dimensional trunk, pelvic, hip and knee kinematics were analysed for initial contact (IC) and the time of peak pelvic medial tilt (PPT). Regardless of landing conditions, the joint excursions in the entire lower limb joints were gender-specific. Women exhibited higher trunk left axial rotation at PPT (women: 4.0 ± 7.5°, men: ?3.1 ± 8.2°; p = 0.011) and higher hip external rotation at both IC and PPT (p < 0.01). But women demonstrated higher knee abduction compared to men. Men demonstrated more medial pelvic tilt at IC and especially PPT (men: –5.8 ± 4.9°, women: 0.3 ± 6.3°; p = 0.015). Strategies for maintaining trunk, pelvis and lower limb alignment during lateral reactive movements were gender-specific; the trunk and hip rotations displayed by the women were associated with the higher knee abduction amplitudes and therefore might reflect a movement strategy which is associated with higher injury risk. However, training interventions are needed to fully understand how gender-specific core stability strategies are related to performance and knee injury.     

民办高校的招生策略分析

招生工作既是民办高校生存的基础，也是学校对外宣传的窗口和学校形象的展现。但是，一些学校在指导思想和具体运作上存在严重失误，极大地损害了自身的声誉。文章对此提出了几点对策。