Physiological responses in different intensities of resistance exercise – Critical load and the effects of aging process     

Vivian Maria Arakelian  Cássia da Luz Goulart  Renata Gonçalves Mendes  Nuno Manoel de Sousa  Renata Trimer  Solange Guizilini 《Journal of sports sciences》2019,37(12):1420-1428

Aim was to identify critical load (CL) in young and elderly apparently healthy male cohorts. To contrast the metabolic, cardiovascular and perceptual responses on CL according to age. We evaluated 12 young (23 ± 3 years) and 10 elderly (70 ± 2 years) apparently healthy active males, who underwent: (1) 1 repetition maximum (1RM) test on a 45° Leg Press; (2) on different days, three high-intensity resistance exercise constant load tests (60%, 75% and 90% 1RM) until fatigue (Tlim). Absolute values of both the CL asymptote and curvature constant (kg) were significantly lower in elderly subjects (P < 0.05). In contrast, elderly subjects demonstrated a significantly higher number of repetitions at CL when compared with young subjects (P < 0.05). As expected, oxygen uptake (VO₂) and heart rate (HR) during maximal aerobic exercise testing were significantly reduced in older subjects. However, percent-predicted aerobic capacity were higher in older subjects (P < 0.05). In addition, blood lactate ([La^?]) corrected to Tlim and rating of perceived exertion values were greater in younger subjects at all intensities (P < 0.05). These findings, despite reduced force production in older subjects, endurance-related parameters are well preserved according to age-adjusted percent-predicted values in apparently healthy males.  相似文献   

Editorial statement     

Chan Ching-kiu Stephen  Law Yuen-fun Muriel 《Inter-Asia Cultural Studies》2013,14(2):213-214

Grounded in the interdisciplinary educational work of Cultural Studies, this paper examines the pedagogical potentials of narrative and performance for the teaching of writing as a mode of public discourse. Guided to address a wide readership, students engage in critical communication aimed at linking self inquiry and narrative discourse to the contextual analysis of the social. Drawing on research findings derived from the undergraduate teaching of cultural criticism as a genre of public writing at Lingnan University, Hong Kong, we look at how educational drama mediates the work of narrative and performative acts involving the young learner-writers and contributes to the shaping of a dialogic mode of address and communication, thus articulating the process and impact of writing to the public-oriented discourse in Cultural Studies education. In light of such acts in critical discourse and imagination targeted at the potential reader, we show how the young writers' own engagement with critical thinking and communication are opened up by drama-in-education adopted in the class, and argue how, in this sense, both writing and its learning process become effective stages in the making of the kind of cultural criticism we want to help students to learn.  相似文献   

中国体育用品制造业产业集聚程度变动趋势的定量研究   总被引：5，自引：0，他引：5  

陈颇  赵恒 《天津体育学院学报》2009,24(1):56-61

基于市场行业集中度指标(CRn)与产业空间集聚指数(β),对中国7大类体育用品制造行业2002-2007年的产业集聚水平进行测定及动态分析.结果表明:2002-2007年我国7大类体育用品制造行业的产品销售收入排名前6位的省(市)主要是广东、江苏、山东、浙江、福建和上海,该6个地区均隶属东部,中、两部则榜上无名,说明中国体育用品制造业产业集聚程度的区域差异非常明显.2002-2007年我国体育用品制造业、球类制造业、训练健身器材制造业、运动防护用具制造业、文教体育用品制造业与其他体育用品制造业的产业空间集聚指数均呈增长趋势,而体育器材及配件制造业的产业空间集聚指数却呈下降趋势.按其增幅大小顺序依次为:运动防护用具制造业>文教体育用品制造业>球类制造业>体育用品制造业>其他体育用品制造业>训练健身器材制造业.2007年运动防护用具制造业、球类制造业和其他体育用品制造业的产业空间集聚指数分别位居前三甲(β>0.1),其余4大类体育用品制造行业也均大于0.05,产业空间集聚指数位于0.05及以下的体育用品制造行业则为无,表明我国区域体育用品制造行业的空间集聚程度已非常显著.同时,就国内7大类体育用品制造行业的产业空间集聚指数与工业生产总值展开相关分析发现,中国工业总产值和体育用品制造业空间集聚程度存在较高的正相关关系.  相似文献   

乒乓球运动员注意力的影响因素及训练方法     

涂剑凌 《体育科学研究》2009,13(4):63-64

运用文献资料法、观察法、访谈法等研究方法,以福建省女子乒乓球队队员为研究对象,对乒乓球运动员注意力的特点、影响因素及训练方法进行分析。结果表明：乒乓球运动要求运动员具备高度集中并且灵活转换4种不同类型注意力的能力;运动员注意力的集中受到外部环境和运动员内在身心因素的影响;事物凝视训练、抗干扰训练、注意力转移训练、放松训练有利于提高运动员的注意力。  相似文献   

气体泄漏多维浓度场模拟装置研制及教学应用     

王金贵  郭进  张苏  阳富强  施永乾 《实验技术与管理》2021,(2):105-107

科研案例教学法是推进科教融合、提升教学效果的重要举措.为了提升“燃烧学”“消防工程”等课程中关于气体的扩散行为及气体泄漏过程中的多维浓度场特征等抽象知识点的教学效果,研制了气体泄漏多维浓度场模拟装置,并以甲烷泄漏实验为例,将其应用于课程教学中.结果 表明,使用该装置后明显提升了学生对前述知识点的掌握程度,而且锻炼了学生...  相似文献   

Cloning the Blairs: New Labour's programme for the re-socialization of working-class parents     

Sharon Gewirtz 《教育政策杂志》2013,28(4):365-378

In his speech to the Confederation of British Industry (CBI) in July 1999, the UK Secretary of State for Education, David Blunkett, set out New Labour's vision for a system of education in which there is ‘excellence for the many not just the few’. He outlined what is essentially a bi-focal strategy for achieving this vision. The first focus is on the education system itself, the structures and practices that New Labour believes need to be in place if schools and services are going to meet the needs of all children and not just a privileged minority. The second focus is on the need to promote ‘a culture of achievement’, as, according to Blunkett, the vision ‘depends on changing attitudes as well as the system itself’. This paper focuses on this second strategy, more specifically the government's attempts to change the attitudes of parents. It is argued that this strategy aims to eradicate class differences by reconstructing and transforming working-class parents into middle-class ones, that it represents possibly the most important and far-reaching aspect of New Labour's policy agenda, and that it has not so far received the attention it deserves. The paper is in two parts. The first part sets out what is involved in New Labour's programme of re-socialization and explores the mechanisms by which New Labour is attempting to universalize the values, attitudes and behaviour of a certain fraction of middle-class parents. The second part develops a critique of this programme.  相似文献   

The nature of boys’ educational aspirations in urban Jamaica: an exploratory mixed-methods study     

Shawanda Stockfelt 《Compare》2012,42(4)

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海派文学研究综述     

杨迎平 《海南师范大学学报(社会科学版)》2003,16(2):37-42

文章对海派文学研究进行了系统回顾,重点介绍了20世纪30年代“京海论争”的情况和新时期以来海派文学研究的新进展,对研究现状、取得的成绩和尚待开拓的领域作了分析。  相似文献   

The Highway Map Social Studies Resource     

Jane Ehemann 《Clearing house (Menasha, Wis.)》2013,86(4):165-166

Teachers today are more aware of differences in the way students learn and that a wide variety of strategies must be employed when teaching. Major musical films, when appropriately excerpted, can provide an entertaining and unique way of addressing valid instruction objectives in both the cognitive and affective domains. In this article, the authors provide applications of specific Broadway musicals and films to everyday instructional practices.  相似文献   

对我国体育用品产业市场结构特征的研究   总被引：3，自引：0，他引：3  

李骁天  王莉 《体育科学》2007,27(5):15-22

运用产业组织理论对我国体育用品产业市场的结构进行了研究。探讨了我国体育用品产业市场集中度、产品差别化、市场的进出壁垒这3个对我国体育用品产业市场结构形成起影响作用的主要因素；通过数据分析了产业市场的集中度、体育用品差别化、产业市场的进出壁垒，并结合数据对其成因进行深入的分析。在此基础上得出我国当前体育用品产业的市场结构类型与特征。  相似文献