论篮球运动优秀组织后卫能力的培养

针对我国篮球运动高水平的组织后卫能力不足的现状 ,通过对资料的分析、推理、归纳 ,阐述了组织后卫应具备的能力及其培养方法 ,旨在为篮球运动优秀组织后卫的快速成长提供理论依据。     

关于闲暇体育潜在价值的认识

终身教育就是要使人们“学会生存”,同时 ,也使人们通过闲暇教育而有效开发自身的潜能 ,学会科学休闲与生活 ,进而提高生活质量。闲暇体育是闲暇教育中的重要组成部分 ,是增进社会成员健康水平 ,维护身心健康以及提高劳动者人力资本的积极有效途径。     

The reliability of distance run tests for children in grades K-4.

The purpose of this study was to determine test-retest reliability for the 1-mile, 3/4-mile, and 1/2-mile distance run/alk tests for children in Grades K-4. Fifty-one intact physical education classes were randomly assigned to one of the three distance run conditions. A total of 1,229 (621 boys, 608 girls) completed the test-retests in the fall (October), with 1,050 of these students (543 boys, 507 girls) repeating the tests in the spring (May). Results indicated that the 1-mile run/walk distance, as recommended for young children in most national test batteries, has acceptable intraclass reliability (.83 less than R less than .90) for both boys and girls in Grades 3 and 4, has minimal (fall) to acceptable (spring) reliability for Grade 2 students (.70 less than R less than .83), but is not reliable for children in Grades K and 1 (.34 less than R less than .56). The 1/2 mile was the only distance meeting minimal reliability standards for boys and girls in Grades K and 1 (.73 less than R less than .82). Results also indicated that reliability estimates remained fairly stable across gender and age groups from the fall to spring testing periods, with the exception of the noticeably improved values for Grade 2 students on the 1-mile run/walk test. Criterion-referenced reliability (P, percent agreement) was also estimated relative to Physical Best and Fitnessgram run/walk standards. Reliability coefficients for all age group standards were acceptable to high (.70 less than P less than .95), except for Fitnessgram standards for 5-year-old girls on the 1-mile test for both fall and spring and for 6-year-old boys and girls on the 1-mile test administered in the spring.     

Cerebral activity prior to motion task performance: an electroencephalographic study

Cerebral activity, as reflected by power in the alpha waveband (8-13 Hz), was examined prior to the performance of three tasks with different effort and accuracy requirements. The study aimed to further investigate changes in activity observed in an earlier study in which expert karate performers exhibited significant increases in alpha band power during preparation for a training task. In contrast to the earlier research, the high effort task produced a significant decrease in 'alpha' power prior to performance. 'Alpha' power prior to the high accuracy task showed significant differences mediated by the outcome. Successful performance was preceded by higher levels of 'alpha' power than unsuccessful attempts. The reported use of a cognitive strategy on the first task produced a significant difference in activity, lower alpha power being associated with the use of such a technique.     

CONCERN FOR THE ENVIRONMENT: A CROSS-NATIONAL PERSPECTIVE

Data from the International Social Survey Program indicate considerablevariation in the desire of respondents for increased spendingon the environment in Australia, Austria, Great Britain, theUnited States, and West Germany. This paper explores this variationwith the following objectives: (1) to determine the extent towhich the social bases of environmental concern are consistentacross nations; (2) to determine how the issue of the environmenthas been politicized in the five industrialized nations, focusingon the association of Old Leftist concerns and environmentalconcern; and (3) to determine the extent to which the socialbases of environmental concern can explain the cross-nationalvariation. The study usesa regression analysis, testing variablesrepresenting the social bases of environmental concern frompast research in the United States, a scale representing commitmentto the platform of the Old Left, and dummy variables for eachcountry. The results show that the social bases of environmentalconcern are the same in the five countries studied, includinga consistent positive association of Old Leftism with environmentalconcern. However, substantial variation between countries inthe overall level of concern remains. Potential sources of theremaining variation are examined.     

TFPS 教学用运动技术影片分析系统的教学应用

TFPS 教学用运动技术影片分析系统(Teaching's Film Processing System)的应用,彻底改变了以往影片分析方法教学的一般性介绍的状况,以实验部分为核心,采用新的教学方法,借助新的教学仪器,使理论与实践相结合,大大加深了学生对这一方法的理论知识的理解和掌握,同时使学生亲自动手实验,掌握实际实验技能,大大提高了进行运动技术分析的研究能力,填补了这一教学领域的空白,使这一领域的教学水平和教学质量达到了国内领先水平和国际先进水平。