主成分与因子分析在体育综合评价中的应用检测

通过对主成分与因子分析在综合评价中的应用检测，发现存在3个方面的问题，即误用认知数据；主成分与因子的遗漏现象；评价权重的确定不客观。提出对遗漏因子的检测和处理方法，建议用因子分析结合专家法确定综合评价中的权重。     

主成分分析在体育课堂教学评价量表构建中的应用

通过文献法、专家调查法、问卷调查法、理论分析法和逻辑推理法，对主成分分析在体育课堂教学评价量表构建中的应用进行探讨，表明大学文理科学生对体育教师课堂教学评价存在差异性，建立了体育教师课堂教学评价量表及其数学模型，为全面、客观、公正、系统评价体育教师课堂教学提供参考。     

主成分分析法在江苏省工业经济效益评价中的应用

目前,我国评价工业经济效益的指标很多,如工业增加值、资产合计、产品销售收入、利税总额、利润总额等等。主成分分析法能够在保证原始数据信息损失最小的情况下,以少数的综合变量取代原有的多维变量,使数据结构简化。文章运用主成分分析原理,结合几年来江苏省工业经济效益变化状况经行了综合评价。     

主成分分析和因子分析在体育科学研究中应用方法的探析

通过样本含量对分析结果的影响，选择各类指标变量个数对因子排序的影响等几个方面的分析研究，为主成分分析和因子分析方法的广泛应用提供一定的理论参考依据     

关于主成分分析在体育科研中应用的思考

采用文献与统计分析相结合的方法．对体育科学研究中应用主成分分析存在的问题进行探讨．提出提高主成分分析的效果，要结合研究目的分析数据“相关”的实际意义，同时注意数据的信息量和数据的类型、结构的影响。     

应用Q型聚类对学生身体素质的评价分析

采用Q型聚类分析法，对我院14个系95级全体男生的身体素质进行评价分析，目的在于避免长期以来使用经验评价的弊端。以利提高该年级男生的身体素质水平。     

体质综合指数的多层次主成分分析模型

以湖北省体质综合指数指标体系为基础,利用主成分分析的结果,建立了湖北省各地区分性别分年龄体质综合指数的数学模型,利用2005年湖北省体质监测数据计算出2005年湖北省各地区分性别分年龄体质综合指数,并对体质综合指数的结果进行了分析。     

主成分分析方法在体育用品制造业经济效益评价中的应用

为了解我国体育用品制造业经济效益的发展状况,利用主成分分析方法对体育用品制造业和其他有代表性的产业进行经济效益评价.结论是目前体育用品制造业的经济效益水平在比较的7个产业中,位于中下等水平.     

时序全局主成分分析在体育场地发展态势描绘中的应用

利用时序全局主成分分析法对江西省1984-2003年的体育场地发展历程做了动态描绘．结果表明,动态轨迹与客观实际能较好的吻合,为促进我国体育场地的进一步发展提供了参考依据,也为相似研究提供了方法借鉴．     

主成分回归模型在人口城市化水平中的应用

根据四川省统计年鉴中有关的数据,运用相关分析、主成分分析、回归分析等定量方法,横向地探索影响人口城市化水平的因素。研究发现：它与各地区的交通、环境绿化和人均收入等成显著正相关,其中人均生产总值和人均收入的显著性相对较弱。     

主成份分析法在体质综合评价中的应用

从统计分析的角度出发提出了因子分析法,得出综合因子及因子得分,并以此为依据对体质给出一个综合的统计评判标准．使人群中的每一个人明确自己的体质状况在该人群中所处的位置。主要目的是给出体质评判的一种统计方法。     

体育专业短跑男生身体素质指标选取与评价研究

调查高校体育专业短跑男生身体素质及其特征,建立身体素质的单项评价模型和综合评价体系。研究结果表明,体育专业短跑男生的身体素质模型可简略分为快速力量因子及协调柔韧性因子两个方面(共9项指标)。     

我国优秀男子龙舟运动员身体素质评价模型的研究

运用文献资料法,数理统计法,专家访谈法等多种研究方法,对2009年全国龙舟锦标赛、中华龙舟大赛总决赛、2010年亚运会全国选拔赛中各单项前六名的30支优秀男子龙舟队伍的运动员身体素质指标进行研究,通过研究分析,确立我国优秀男子龙舟运动员身体素质的评价模型。结果表明:1)我国优秀男子龙舟运动员的身体素质主要由力量、耐力、柔韧、速度、灵敏5个因子构成,其中力量因子和耐力因子的载荷贡献率较大。2)我国优秀男子龙舟运动员的身体素质特征表现为:力量较大,速度快,耐力突出,反应灵敏,柔韧性很好等特点。3)根据各素质指标测得数据统计分析,按其的权重比例构建评价体系模型,为我国优秀男子龙舟运动员的科学选材和训练提供重要的参考依据。     

全民健身公平:内涵、评价与对策

分析了全民健身公平的内涵,从全民健身过程公平的资源配置(投入)和服务供给(产出)两个方面,构建了全民健身公平的评价指标体系,通过灰色关联评价模型对我国区域全民健身公平进行实证分析,进而有针对性地提出促进我国全民健身公平发展对策,即明确全民健身公平的法律地位;突出政府全民健身服务供给的主导职能;建立全民健身服务公平运行机制;建立全民健身服务公平评价机制。     

Objectively measured physical activity,body composition and physical fitness: Cross-sectional associations in 9- to 15-year-old children

The aim of this study was to examine and quantify the cross-sectional associations of body composition (BC), physical activity (PA) and sedentary time (ST) with physical fitness (PF) in children and adolescents. A sample of 594 Finnish students (56% girls), aged 9–15 (12.4?±?1.3 years) were selected for a study performed in 2013. The measurements of the Move! monitoring system for physical functional capacity were used to measure cardiorespiratory and musculoskeletal fitness and fundamental movement skills. Moderate-to-vigorous PA (MVPA) and ST were measured objectively with an accelerometer and BC by a bioelectrical impedance analysis. Fat mass index (FMI) and fat-free mass index (FFMI) were calculated to represent height-adjusted BC. Associations were explored with a linear regression model. In general, FMI had statistically significant negative associations, while FFMI and MVPA had positive associations with PF. No statistically significant associations were observed between ST and PF. In general, FMI had the strongest association with PF, although some variation occurred with sex and PF component. However, associations were practically relevant only in 20-m shuttle run, push-up, curl-up and 5-leaps test. For example, approximately 5?kg increase in fat mass in 155?cm tall children was estimated to correspond to 8 laps in 20-m shuttle run. Similar increase in fat-free mass corresponded to +4 and +6 laps, and 10?min increase in daily MVPA +3 and +2 laps in 20-m shuttle run, in boys and girls, respectively. Understanding these associations is necessary when interpreting children’s PF and designing interventions.     

Between-school variation in physical activity,aerobic fitness,and organized sports participation: A multi-level analysis

Abstract

A large proportion of a child's day is spent at school interacting with certain physical surroundings, teachers, and school friends. Thus, schools could have a marked impact on establishing physical activity habits. The aim of the present study was to assess between-school variation in physical activity, aerobic fitness, and organized sports participation. Altogether, we tested 1766 nine- and fifteen-year-old children attending 242 school classes at 35 different schools in Denmark in 1997–2003. The intra-class correlation coefficient (ICC) for objectively assessed physical activity ranged between 0.06 and 0.18 depending on the dimension of physical activity and the time considered (i.e. school time vs. leisure time). For aerobic fitness, an ICC of 0.10 was observed, whereas that for organized sports participation ranged between 0.01 and 0.10 depending on the age group. Studying between-school variation in physical activity provides information about the extent to which children adjust their physical activity habits according to the social and environmental circumstances that they share, and helps to plan future school-based physical activity studies, especially in terms of sample size and power calculation.     

Deleterious effects of obesity on physical fitness in pre-pubertal children

The prevalence of obesity in children has increased dramatically during the past decades in Europe and understanding physical fitness and its components in children is critical to design and implement effective interventions. The objective of the present study was to analyse the association between physical fitness (aerobic, speed, agility, power, flexibility and balance) and body mass index (BMI) in pre-pubertal children. A total of 2411 healthy schoolchildren (7–11 years) participated in this study. Anthropometric characteristics and body composition were assessed by skinfold thickness. Physical fitness was measured by nine physical fitness tests: endurance running, 20 m running speed, agility, handgrip strength, standing long jump and squat jump, sit and reach, medicine ball forward throw and static balance. No relevant differences were observed between boys and girls regarding anthropometric characteristics, body composition and physical fitness. However, overweight and obese children showed significantly lower physical fitness levels in endurance running, speed and agility (mean: +18.8, +5.5 and +14.5% of time to complete tasks, respectively), lower limb power normalised to body mass (?23.3%) and balance tests (number of falls: +165.5%) than their normal weight counterparts. On the other hand, obesity did not affect handgrip, throwing and flexibility. In conclusion, increased BMI was associated with lower performance capabilities limiting proper motor skill development, which directly affects the ability of children to take on sports skills. Actions undertaken to promote children's wellness and fitness should be prioritised and introduced early in life with the aim of enhancing physical fitness as well as preventing overweight and obesity.     

大学生体质与体力活动的相关分析和研究

采用《学生体质健康标准》和体力活动概念研究大学生体质、体力活动现状及相互关系。从南京大学、南京理工大学等11所院校共抽取研究对象2 614人,其中男生1 313人,女生1 301人。体质测试采用《学生体质健康标准》,体力活动调查采用国际体力活动问卷。结果显示:大学生体质总体良好,男生体质综合得分、体质健康达标优秀率均优于女生;男生超重或肥胖发生率为9.5%,女生低体重发生率为24.5%,身体成分不合理对体质健康构成负面影响;大学生大中强度体力活动主要来源于体育课,课余时间体力活动偏少,女生活动比男生少,大学生每天静坐时间较长;每周有规律地参加大中强度体力活动,尤其是大强度活动可以有效提高大学生体质健康水平。     

全国八所高校学生体质健康状况的调查分析

通过对全国较早实施<学生体质健康标准(施行方案)>的八所高校进行调查,并对测试的数据结果进行统计、分析,对学生的体质健康状况作客观的评价,表明绝大部分学生体质健康状况良好,不同地区大学生的体质健康状况存在着差异,重点大学的情况好于普通高校,女生优于男生,测试结果等级分布符合一般规律.     

浙江省社会体育指导员调查与分析

通过对浙江省社会体育指导员人数、级别、年龄、性别、化程度、工作年限、指导情况等的调查分析。发现浙江省社会体育指导员存在着人数严重不足、男女比例失调、学历层次较低等现象,已开始成为影响我省全民健身活动健康深入开展的重要因素之一,参照国外先进国家的培训制度．提出建议．为大规模培养高质量的社会体育指导员提供一定的参考依据。