Matching of Male and Female Subjects Using VO2 max     

Kirk J. Cureton 《Research quarterly for exercise and sport》2013,84(2):264-268

Abstract

We compared cardiorespiratory responses to exercise on an underwater treadmill (UTM) and land treadmill (LTM) and derived an equation to estimate oxygen consumption (VO₂) during UTM exercise. Fifty-five men and women completed one LTM and five UTM exercise sessions on separate days. The UTM sessions consisted of chest-deep immersion, with 0, 25, 50, 75, and 100% water-jet resistance. All session treadmill velocities increased every 3 min from 53.6 to 187.8 m·min^-1. Cardiorespiratory responses were similar between LTM and UTM when jet resistance for UTM was ≥ 50%. Using multiple regression analysis, weight-relative VO₂ could be estimated as: VO₂ (mLO₂·kg^-1·min^-1) = 0.19248 · height (cm) + 0.17422 · jet resistance (% max) + 0.14092 · velocity (m·min^-1) - 0.12794 · weight (kg) - 27.82849, R²= .82. Our data indicate that similar LTM and UTM cardiorespiratory responses are achievable, and we provide a reasonable estimate of UTM VO₂.  相似文献   

Physical Fitness and Cardiac Risk Factors of Professional Firefighters across the Career Span     

Weimo Zhu Ph.D.  HPR 《Research quarterly for exercise and sport》2013,84(3):363-372

This study examined the relationship between basic psychological skills usage (i.e., goal-setting, imagery, self-talk, and relaxation) and the intensity and directional dimensions of competitive anxiety. Semistructured interviews were used on a sample of 15 elite athletes (M age = 24.3 years, SD = 4.2) from a variety of team and individual sports. Findings revealed that the participants maintained the intensity of their anxiety response prior to competition and could deploy goal-setting, imagery, or self-talk to enable facilitative interpretations of anxiety-related symptoms to performance. Higher levels of self-confidence and an optimistic outlook toward forthcoming competition were also expressed. The underlying mechanisms perceived to be responsible for these effects included effort and motivation, attentional focus, and perceived control over the anxiety response.  相似文献   

完善教务管理系统提高管理水平   总被引：2，自引：0，他引：2  

吴楚光  曾超 《广东广播电视大学学报》2001,10(2):40-43

实现教务工作的计算机管理是提高教务管理水平，适应现代远程教育的需要，中央电大为此组织开发了适合各级电大使用的教务管理系统软件。经过几年的使用，发现系统存在不少问题，有些问题甚至会影响整个系统的正常运行，为此我们针对所发现的问题进行软件的二次开发，开发出适合我校使用的高效辅助软件，同时规范了系统的使用。开发的辅助软件及为规范系统的使用所采取的一些措施。  相似文献   

培养学生创新能力的物理实验考试模式     

张锐波 《实验室研究与探索》2012,31(2):88-90

为了提高物理实验教学质量和培养学生创新能力,实施了与教学模式相适应的、多阶段、多形式、机动灵活的考试模式,重点细化了对学生能力平时成绩评价体系,并就此考试模式和学生成绩评价体系进行了论述。  相似文献   

Updating formulae for the sample covariance and correlation     

Kevin Hayes 《Teaching Statistics》2012,34(2):65-67

This article provides an easy derivation of updating formulae for the sample covariance and, by extension, for the Pearson product–moment correlation coefficient.  相似文献   

基于图形的考试成绩分析方法     

朱健  李萌  韩怡 《辽宁高职学报》2012,(1):89-91

考试是衡量教学效果最重要的方法和手段,其关键在于对考试结果的数据进行有效的分析,使之能够成为教学效果的评价依据。数值分析通过计算算术平均值和标准差来表示考试成绩的一般水平和集中趋势,用图形对数据进行分析可以直观地表明数据的变化幅度和趋势,能够很好地表现数据的集中区域和离散度。  相似文献   

网络主题探究教学模式的设计——以《英语测试》课程考试成绩分析为例     

乔惠娟  魏贵娟 《衡水学院学报》2012,(3):123-126

网络主题探究教学模式(WebQuest)即学生通过网络来寻求某个问题的解决方案。该设计把现代教育技术——网络教学资源融入传统的《英语测试》课程中,以"考试成绩分析"的主题为例,研究网络主题探究教学模式及设计方法,通过定性分析和定量分析相结合的方法,探讨网络主题探究教学模式对学生及其自主学习的影响。  相似文献   

英语专业学生听力与词汇能力的相关性研究     

钟毅 《重庆第二师范学院学报》2012,25(1):147-150,162

词汇是语言学习的基础,是听力能力提高的关键。本文通过对英语专业学生的词汇与听力测试成绩的相关性进行研究,发现英语专业学生词汇能力与听力能力之间确实存在显著的正相关,本文通过对一例英语专业大二学生的听力成绩分析,对英语专业院校重视词汇在听力教学中的地位予以肯定,同时也对当前听力教学和词汇教学的结合提出几点建议。  相似文献   

What Do Test Score Really Mean? A Latent Class Analysis of Danish Test Score Performance     

James McIntosh 《Scandinavian Journal of Educational Research》2014,58(4):435-452

Latent class Poisson count models are used to analyse a sample of Danish test score results from a cohort of individuals born in 1954–1955, tested in 1968, and followed until 2011. The procedure takes account of unobservable effects as well as excessive zeros in the data. We show that the test scores measure manifest or measured ability as it has evolved over the life of the respondent and is, thus, more a product of the socioeconomic status of the parents and the human capital formation process than some latent or fundamental measure of pure cognitive ability. We find that variables which are not closely associated with traditional notions of intelligence explain a significant proportion of the variation in test scores. This adds to the complexity of interpreting test scores and suggests that school culture and possible incentive problems make it more difficult to understand what the tests measure.  相似文献   

A Methodology for Calculating Prestige Ranks of Academic Journals in Communication: A More Inclusive Alternative to Citation Metrics     

Timothy D. Stephen 《Behavioral & Social Sciences Librarian》2013,32(2):63-71

The problem of how to rank academic journals in the communication field (human interaction, mass communication, speech, and rhetoric) is one of practical importance to scholars, university administrators, and librarians, yet there is no methodology that covers the field's journals comprehensively and objectively. This article reports a new ranking methodology based in empirical criteria. The new system relates independent measures of the prestige of the field's doctoral departments to information about where faculty members from those departments have published scholarly articles. This new approach identifies the field's most influential journals as those that more frequently publish the work of the field's top scholars and programs as perceived by their peers. This system was used to compute prestige weights (P-weights) for 65 communication journals. P-weights were found to be strongly correlated with ISI Web of Science journal impact factor scores and can be used to identify an overall prestige hierarchy for communication journals as well as prestige rankings by subject specialty.  相似文献