The effects of attentional focus instructions on punching velocity and impact forces among trained combat athletes     

Israel Halperin  Dale W. Chapman  David T. Martin  Chris Abbiss 《Journal of sports sciences》2017,35(5):500-507

Research indicates that instructing athlete’s to focus on bodily movements (internal focus of attention [IFA]) may hinder performance, whereas instructing them to focus on the movement outcome (external focus of attention [EFA]) often enhances performance. Despite the importance of instructions in striking combat sports, limited research has examined the influence of IFA and EFA on performance in well-trained combat athletes. This study investigated the effects of different instructional cues on punching velocity (m · s^?1) and normalised impact forces (N · kg^?1) among intermediate (n = 8) and expert (n = 7) competitive boxers and kickboxers. Athletes completed three rounds of 12 maximal effort punches delivered to a punching integrator on three separate days. Day one was a familiarisation session with only control instructions provided. In the following two days athletes randomly received IFA, EFA or control instructions prior to each of the three rounds. Athletes punching with EFA were 4% faster and 5% more forceful than IFA (P < 0.05), and 2% faster and 3% more forceful than control (P < 0.05). Furthermore, experts punched 11% faster and with 13% greater force compared with intermediate athletes (P < 0.05). EFA led to a positive effect on punching performance and should be favoured over IFA and control instructions.  相似文献   

公共英语新版教材编写体验与认知     

刘旭亮 《太原大学学报》2011,12(4):106-108

为了更好地配合和适应我国公共英语等级考试和教学的发展需要，新版公共英语教材经过重新编写即将面世。该系列教材在第一版的基础上无论从指导思想、内容、以及编排体例上都做出许多新的变化，内容选材上更加注重时代感、启发性、实用性和文化性，编排上追求系统性，科学性，开放性，以及可操作性。全书融入许多新的教学理念，必将更好地应用与服务于我国公共英语教学的实践。  相似文献   

天然灵动的韵致——石定小说创作论     

王刚 《安顺师范高等专科学校学报》2011,(6):17-22

论文通过分析石定1980年-1990年之间的文学创作,认为石定的小说描摹出了上世纪末黔北农村变化的历程,刻画出黔北农民心灵变迁的轨迹。石定的作品雅致纯净、天然灵动,是一幅幅打下时代印迹的水墨丹青。  相似文献   

False-performance feedback does not affect punching forces and pacing of elite boxers     

Israel Halperin  Dale W. Chapman  Kevin G. Thompson  Chris Abbiss 《Journal of sports sciences》2019,37(1):59-66

Prior research indicates that providing participants with positive augmented feedback tends to enhance motor learning and performance, whereas the opposite occurs with negative feedback. However, the majority of studies were conducted with untrained participants performing unfamiliar motor tasks and so it remains unclear if elite athletes completing familiar tasks respond in a similar fashion. Thus, this study investigated the effects of three different versions of false-performance feedback on punching force (N), pacing (force over time) and ratings of perceived exertion (RPE) in 15 elite amateur male boxers. Athletes completed a simulated boxing bout consisting of three rounds with 84 maximal effort punches delivered to a punching integrator on four separate days. Day one was a familiarisation session in which no feedback was provided. In the following three days athletes randomly received false-positive, false-negative and false-neutral feedback on their punching performance between each round. No statistical or meaningful differences were observed in punching forces, pacing or RPE between conditions (P > 0.05; ≤ 2%). These null results could stem from the elite status of the athletes involved, the focus on performance rather than learning, or they may indicate that false feedback has a less potent effect on performance than previously thought.  相似文献   

Between Tradition and Change: Hunting as Metaphor and Symbol in State Socialist Hungary     

György Majtényi 《Cultural and Social History》2016,13(2):231-248

Through the historic metaphor of hunting the essay examines the lifestyle of the dominant elites of Hungary between 1945 and 1990 on the basis of archival documents, private records, and oral history interviews. The analysis emphasizes the fact that there were interactions between the old, prewar aristocracy and the new state socialist elites. The co-incidence of lifestyles can be viewed through the lens of social and cultural change: new elements hit against the old, shaping and dissolving old behavioural patterns. The article analyses hunting in the contexts of social differentiation and social grouping. Using semiotics the author shows how, even during the era of state socialism, power and social distinctions were articulated on the level of lifestyles, and transmitted via the social, semiotic function of behaviours, patterns of taste, and forms of interaction. Thus, hunting evolved into a metaphor over time in Hungary: it was not only an indispensable part of the everyday life of the elite, but also became a symbol for belonging to it.  相似文献   

李祁散文研究     

向小金 《怀化学院学报》2015,(4)

李祁是元遗民重要代表,其散文创作文体多样,数量丰富。他的散文继承《风》、《骚》传统,反映人心世道,同情民生疾苦,抒写自己忠于旧朝的儒家君臣大义观念。李祁的散文真挚感人,有着自己独特的艺术风格,并成为元末丧乱时代的折射。  相似文献   

应对方式在体育锻炼与女大学生抑郁之间的中介效应分析     

徐唯  侯峥嵘 《吉林体育学院学报》2017,33(1)

利用Bootstrap交叉验证的方法对女大学生应对方式在体育锻炼与抑郁之间的中介作用进行检验.结果发现,问题解决纬度在体育锻炼对抑郁的影响中起部分中介作用,其中介效应值为-0.0193,中介效应置信区间为[-0.0433 -0.0053],中介效应量占总效应量的28.4%;其他8个应对方式纬度中介效应都不显著.结论认为,积极应对方式在体育锻炼对女大学生抑郁的影响中起中介作用.  相似文献   

“我心目中的好课堂”——来自孩子心灵的呼声     

蔡文艺 《江苏教育研究》2011,(1):36-39

对于什么样的＂课＂是＂好课＂,历来有多种说法,可谓仁者见仁,智者见智。然而,这些所谓＂好课标准＂都是成人所构建的。课堂生活是孩子们经历最多、体验最深的一种生活方式。教育现象学研究要求关注教育情境中师生的＂生活体验（世界）＂,关注教育的实际发生领域,关注生活的意义。由此,本研究旨在用教育现象学的方式倾听孩子们内心的声音,用描述性的语言勾勒出孩子们心目中的＂好课堂＂。  相似文献   

山西省农村居民生活方式与健康状况的研究     

白景  张晓丽 《湖北体育科技》2017,36(1):24-29

运用文献资料法、专家调查法、问卷调查法、数据统计法、逻辑分析法对山西省农村居民生活方式与健康状况的进行调查研究。从11个维度对"生活方式与健康状况"的相关性分析中发现:1)山西省医疗卫生资源和保障状况较好,覆盖到大部分农村地区,但医疗卫生保健知识普及和宣传的力度不够,还需要大力加强。2)在生存方式指标"个人收入"和生活方式指标"吸烟、饮酒、饮食"等方面对农村居民健康状况的影响分析中,没有发现显著性差异。3)在生活方式指标,"参加生产劳动时间"、"不同生活地域"和生活方式指标"受教育程度"、"是否参加体育锻炼"等方面对农村居民健康状况影响分析中,均发现有显著性差异。  相似文献   

社会支持对运动员投入的影响：心理坚韧性与应对方式的序列中介作用     

叶绿  王斌  吴敏  刘尊佳  董良山 《北京体育大学学报》2016,39(7):75-82

摘要：目的：考察社会支持对运动员投入的影响以及心理坚韧性和应对方式在其中的序列中介作用。方法：采用运动领域领悟支持问卷、运动心理坚韧性问卷、竞技运动领域应对问卷、运动员投入问卷对483名现役运动员进行调查。结果：1）社会支持对运动员投入有显著的正向预测作用;2）心理坚韧性与应对方式在社会支持与运动员投入之间起中介作用。结论：社会支持不仅能直接促进运动员投入，还可以通过心理坚韧性与应对方式的中介对其产生间接促进作用，具体包括4条中介路径：通过心理坚韧性的中介路径；通过任务导向应对的中介路径；通过心理坚韧性与任务导向应对的序列中介路径；通过心理坚韧性与脱离导向应对的序列中介路径。本研究构建的中介效应模型在一定程度上揭示了社会支持影响运动员投入的内在机制。研究提示，通过提供社会支持，将能增强运动员的心理坚韧性，促使其更多地采用任务导向应对，更少地采用脱离导向应对，进而促进运动员投入。  相似文献