Physiological profile of a professional boxer preparing for Title Bout: A case study

This study aimed to (1) profile a professional boxer (23 years and 80 kg) with boxing-specific, muscle function, aerobic capacity and body composition tests, and (2) quantify how these measures varied during an 8-week preparation phase leading to, and post a state-Title Bout fought in the 76.2-kg class. A series of boxing-specific and muscle function tests were completed on 11 occasions: 9 prior and twice after the bout, each separated by approximately 2 weeks. The boxing test included 36 maximal punches (9 of each: lead and rear straights, lead and rear hooks) to a punching integrator measuring forces and velocity. Muscle function tests included countermovement jump, drop-jumps, isometric mid-thigh pull and isometric bench-press. Body composition was assessed using skin-fold measurements on three occasions and one dual energy X-ray absorptiometry scan. Aerobic capacity was assessed using 2 VO₂ max tests. Leading up to the bout, performance decreased in isometric mid-thigh pull (8%), isometric bench-press (5%), countermovement jump (15%) and impact forces in 3 of 4 punches (4%–7%). Whereas measures of dynamic and isometric muscle function remained depressed or unchanged post competition, punching forces (6%–15%) and aerobic power (6%) increased. Data suggest the athlete may have super-compensated following rest as fatigue dissipated and further adaptation occurred.     

功能动作测试在中学生基本运动能力评价中的应用

目的：采用功能性动作测试系统（Functional Movement Screen,FMS）评价青少年在完成不同功能动作模式时身体各部分的稳定性、对称性和灵活性,研究其基本运动能力及影响因素。方法：以上海市某中学中随机挑选的100名初中生为研究对象,对他们进行7个特定动作的测试并评分,并对测试结果进行统计分析。结果：FMS测试总分满分为21,受试对象FMS总分均分为14.89,总体水平偏低;女生肩关节灵活性和直腿抬高测试得分显著高于男生,但总分上男女生无显著差异;青少年在完成动作时普遍存在身体晃动、力量不足和两侧肌力不对称现象,髋、膝、踝关节灵活性受限且稳定性较差,脊柱的屈伸能力不足,两侧盂肱关节和髋关节的活动能力不对称。在旋转稳定性、跨栏架和直线弓箭步３个测试中这些不足尤为明显。结论：青少年基本运动能力水平较低,大多数人需要进行矫正训练;男女生总体上的表现差异不显著,但女生在肩部灵活性和直腿抬高测试的表现要优于男生,故男生需加强肩部和髋部关节的灵活性锻炼。     

理论修养是共产党员的立身之本

以德治国的关键是以德治党.共产党员是我国现代化建设的骨干力量,必须努力提高自身素质,加强自身修养,力求做到德才兼备,成为群众学习的楷模.而要达到这一标准,其最基本的途径是学习理论.该论文集中阐述了刘少奇同志论共产党员理论修养的重要思想,目的在于说明理论修养是共产党员的立身之本.     

电力变压器离线局部放电测量试验中的容升现象分析

Partial discharge test on a transformer is carried out according to the items in IEC 60.During the test,unproved measuring system is calibrated by proved system at a voltage no less than 50% the rated testing voltage.The result is then extrapolated linearly,leading to an error related to the distribution of stray capacitance,which varies with the testing frequency,especially to large transformers.In this paper a factor,named the capacitive rise fact,is introduced to assess the rise.The factor can be adjusted to some extent by changing the reactance that is connected to the LV side of the testing circuit to lower the capacity of the power source.However,the factor changes when the voltage divider on the high voltage side is removed after the voltage ratio has been calculated,and a great error is resulted under unfavorable conditions.     

无机高分子混凝剂聚硅硫酸盐的制备

无机高分子絮凝剂是城市用水和工业废水处理的有效药剂。在研究聚合硫酸铁(PFS)合成工艺的基础上,设计出一套合成无机高分子混凝剂聚硅硫酸铁(PSPFS)和聚硅硫酸铝铁(PSAFS)的方法。采用正交试验法,通过模拟浊水的混凝试验,确定Fe/Si摩尔比、Na2SiO3.9H2O溶液聚合时间、反应时间、反应温度和Al/Si摩尔比等最佳参数。     

Physical activity profiles and selected muscular fitness variables in English schoolchildren: A north–south divide?

The aim of the study was to compare and contrast habitual physical activity (PA) profiles and muscular fitness in schoolchildren from northern and southern regions of England. Data were collected from two secondary schools in the north east (NE) of England. The study procedures followed methods employed by the East of England Healthy Hearts Study in 10–16-year-old boys and girls based in the south east (SE) region of England and data were compared. Habitual physical activity (PAQ-A), vertical jump test, and hand-grip (HG) strength were assessed. We converted raw scores from all assessments to age- and sex-normalised z-scores. We recruited 597 children (58% boys) in the NE and compared findings to 597 age- and sex-matched boys and girls from the SE. Boys in the SE had significantly stronger HG scores, jumped higher, were more powerful (mean peak power: 2131?W vs. 1782?W; P?P?P?相似文献   

高职院校校内英语测试的思考

测试是衡量学生掌握语言的能力的手段。目前高职院校校内的英语测试存在着一定的缺陷,制约了学生的英语实际应用能力的培养。只有对院校内的英语测试模式进行完善,才能真正测试出学生的实际应用能力,才能对学生实际应用能力的培养起到促进的作用。     

EWB在《电路分析》课程教学中的应用

电路分析是一门很重要的专业基础课,而利用EWB软件进行教学及模拟实验仿真可以提高学生的学习兴趣,让学生更直观的掌握电路分析的基本理论,更有利于培养学生的实践技能和创新能力,本文就如何在<电路分析>课程教学中应用EWB软件辅助教学进行探讨.     

关于艺术院校学生普通话水平测试的几点思考

艺术院校的学生,特别是有专门台词课、表演课的影视表演、播音主持专业的艺术类学生,普通话水平测试的结果并不理想,达到一级水平的学生并不多。有的学生甚至怀疑普通话水平测试的信度和效度。文章针对这种情况,从口语的吐字归音入手,通过对台词教学与普通话水平测试的评价标准和要求的分析提出应试者(学生)要端正认识,掌握标准。参加普通话水平测试要按照普通话的标准说普通话,注意吐字归音从“神似”回归到“形似”。要经过严格的正音训练或参加普通话培训,在辅导老师的指导下,对自己准确定位,认真练习准备,建立起真实的自信,以顺利地通过普通话水平测试,进入“形”“神”兼备的语言艺术境界。     

Special education and general education preservice teachers’ co-teaching experiences: a comparative synthesis of qualitative research

Co-teaching is commonly used to support students with disabilities in inclusive educational settings. However, there is often a gap between the potential effectiveness of co-teaching and actual classroom practice. This study examined preservice teachers’ co-teaching experiences to better understand this gap to identify potential practices for improving teacher training and service delivery. A review of 11 studies revealed that both special education and general education preservice teachers believed that co-teaching practices provided them opportunities to communicate and work collaboratively. Both groups agreed on the significant impact of personality in co-teaching as well as challenges in implementing co-teaching. Furthermore, special education preservice teachers noted that they lacked content knowledge, whereas general education preservice teachers thought they needed more training in the provision of accommodations and modifications. Study limitations, areas for future research, and implications for preservice teacher preparation are discussed.