我国体育行政执法方式改革研究          下载免费PDF全文

梁尧 《体育科研》2019,(4):67-74

新时代对体育强国和体育法治建设提出了新要求，行政执法作为体育强国建设的重要抓手也面临着方式革新的机遇和挑战。简政放权背景下，体育执法面临着“应不应该管、怎样管”的尴尬处境，广为体育行政执法主体运用的强制性执法手段极易加剧执法矛盾，执法的社会效果得不到保障。由于传统执法方式难以适应新时代体育市场监管的现实需要，革新体育行政执法方式就显得尤为必要。面对时代课题，应遵照由“形式优化”到“实质革新”的逻辑，并树立行政平衡、服务合作和正当程序的理念，从引入信用工具、推广非强制性执法和全程说理式执法3个方面推进改革，实现体育行政执法方式的精简化、多元化和法治化。  相似文献   

我国男生引体向上“零”分探因:基于三角互证的研究策略     

何素艳  石岩 《武汉体育学院学报》2019,53(10):81-87

我国多数男生引体向上得"零"分，使上肢力量测评出现"地板效应"。采用量化研究和质性研究两种范式提高研究效度。量化研究对学生体质与健康调研数据和监测数据进行方差分析、多重比较和回归分析，结果表明：（1）每5~10年，男生的握力、体重、身高、BMI、引体向上均值差异显著；（2）年龄、握力、体重、身高、BMI分别显著预测引体向上成绩，体重和握力是影响我国男生引体向上成绩的主要影响因素。质性研究结果表明，引体向上"零"分主要有四个方面的原因：体重增长难挡，力量增长受限，个体认知偏差，社会支持薄弱。结论：我国男生引体向上"零"分的首要原因是体重增长较快，其次，主要肌群绝对力量和耐力增长不足，男生对引体向上的认知有偏差，学校、家长、社会支持较弱；借助政策控制体重、发展肌力、完善测评标准、促进男生积极练习引体向上十分重要。  相似文献   

Physical activity and nutrition guidelines to help with the fight against COVID-19     

Kayvan Khoramipour  Aref Basereh  Amirhoseein Ahmadi Hekmatikar  Lindy Castell  Ruheea Taskin Ruhee 《Journal of sports sciences》2021,39(1):101-107

ABSTRACT

As the world is witnessing the epidemic of coronavirus disease 2019, emerging genetics and clinical pieces of evidence suggest a similar immunopathology to those of severe acute respiratory syndrome and Middle East respiratory syndrome. Staying at home to prevent the spread of the virus and consequently being largely inactive is associated with unintended consequences. These can actually enhance the infection risk and exacerbate poor health conditions including impaired immune function. Physical activity is a feasible way of improving health, particularly physical and mental health in a time of social isolation. However, people with certain health conditions in these circumstances may need a special physical activity programme in addition to any exercise they may already be performing via online programmes. This review aims to provide practical guidelines during the COVID-19 quarantine period. We suggest performing aerobic, resistance training, respiratory muscle training and yoga in the healthy, and in those with upper respiratory tract illness, patients with lower respiratory tract illness should be restricted to respiratory muscle training and yoga. In addition, vitamins D and C, omega-3 fatty acids, and regular consumption of fruit and vegetables might be considered as nutritional aids to support the immune system in those affected by COVID-19.  相似文献   

Fatigue increases ankle sprain risk in badminton players: A biomechanical study     

Alexis Herbaut  Julien Delannoy 《Journal of sports sciences》2020,38(13):1560-1565

ABSTRACT

Ankle sprains are the most common injury in regular badminton players and usually occur at the end of a match or training. The purpose of the present study was to examine the influence of fatigue produced by badminton practice on the lower limb biomechanics of badminton players. It was hypothesized that fatigue induces ankle kinematic and lower leg muscle activity changes which may increase the risk of ankle sprain. Ankle kinematics, ankle kinetics and muscles activities of 17 regular badminton players were recorded during lateral jumps before and after an intense badminton practice session. Post-fatigue, ankle inversion at foot strike and peak ankle inversion increased (+2.6°, p = 0.003 and +2.5°, p = 0.005, respectively). EMG pre-activation within 100 ms before foot landing significantly decreased after fatigue for soleus (?23.4%, p = 0.031), gastrocnemius lateralis (?12.2%, p = 0.035), gastrocnemius medialis (?23.3%, p = 0.047) and peroneus brevis (?17.4%, p = 0.036). These results demonstrate impaired biomechanics of badminton players when fatigue increases, which may cause a greater risk of experiencing an ankle sprain injury.  相似文献   

生命关怀：赋予小学生人格养成生长的力量——生命关怀下小学生人格养成教育的整体建构研究     

徐顺湘  钱军伟 《江苏教育研究》2014,(7):11-16

开展扎实有效的人格养成教育的序列研究,是江阴市晨光实验小学从＂八五＂到＂十二五＂课题实施的轨迹。文章在简要解读课题的内涵,回顾近20年的研究历程,以及探寻课题研究价值的基础上,从生活指导、社团活动、课堂教学三个维度对操作实施进行了具体的阐释,旨在促进学生形成积极的人生态度,培养健康的审美情趣,养成自主的学习能力。  相似文献   

增程式混合动力集装箱龙门起重机能量智能控制策略     

刘海威  张敏 《上海海事大学学报》2016,37(2):77-82

针对集装箱龙门起重机的具体工况需求和特点，构建一种适用于集装箱龙门起重机的增程式混合动力系统，提出并分析该动力系统的能量智能控制策略，设计相应的智能控制模型.通过以动力电池组的荷电状态（State Of Charge, SOC）和集装箱龙门起重机运行能量需求为模糊输入，以动力电池组的充电功率为模糊输出，实现了对增程式混合动力系统的智能控制.仿真结果验证了该控制策略和控制模型的可行性和有效性.  相似文献   

权利法哲学视野中的体育腐败及其治理原则     

兰薇  姜世波 《北京体育大学学报》2017,40(12):25-29

摘要：针对体育腐败现象，主要通过文献资料法，从权利法哲学视角对体育腐败的定义、本质及其治理原则进行法理解读，目的在于揭示体育领域腐败的深层机理并得出治理之策。体育腐败是发生在体育领域之内的腐败，是享有体育公共权力的主体滥用或怠于行使体育公共权力的行为。体育腐败可以分为两种情形，一种是利用体育职权为自己或他人谋取不正当利益；另一种情形是虽未获取不正当利益，但滥用或怠于行使体育职权致使他人利益或公共利益受损。体育腐败的本质源于在体育权利与体育权力的博弈过程中体育权利之抑制以及体育权力之嚣长，因此，体育腐败的基本治理应遵循以下两个原则：体育权利张扬原则以及体育权力制约原则。体育制度和体育道德是实现体育权利张扬和体育权力制约最有效之措施，应以体现权利张扬和权力制约的体育制度规范之“硬法”辅之以体育道德伦理的教化和治理之“软法”。  相似文献   

我国城市体育文化与城市文化的相容性分析     

林〓宁  李〓凌 《广州体育学院学报》2017,37(4):48-52

随着物质生活水平的逐步提高,人们越来越重视城市的文化功能.但是在现实中,我国的城市发展过于强调经济指标,而忽视了文化建设,导致许多城市面临着文化缺失的问题.体育文化与城市文化,是社会主义文化的重要组成部分.文章分析总结了我国城市发展中的文化缺失现象,对体育文化与城市文化发展的相容性进行分析,认为促进体育文化的发展在一定程度上丰富了城市文化,增加了城市文化的内涵与活力,是繁荣城市文化的重要途径.提出要在塑造文化价值观、创建独特的文化发展模式、协调好文化事业和文化产业的关系、促进文化互动交流和文化创新等几个方面来推进城市体育文化的发展.  相似文献   

Tribute to Dr Jacques Rogge: muscle activity and fatigue during hiking in Olympic dinghy sailing     

Jan G. Bourgois  Jasmien Dumortier  Margot Callewaert  Bert Celie  Carlo Capelli  Gisela Sjøgaard 《European Journal of Sport Science》2017,17(5):611-620

‘A tribute to Dr J. Rogge’ aims to systematically review muscle activity and muscle fatigue during sustained submaximal quasi-isometric knee extension exercise (hiking) related to Olympic dinghy sailing as a tribute to Dr Rogge’s merits in the world of sports. Dr Jacques Rogge is not only the former President of the International Olympic Committee, he was also an orthopaedic surgeon and a keen sailor, competing at three Olympic Games. In 1972, in fulfilment of the requirements for the degree of Master in Sports Medicine, he was the first who studied a sailors’ muscle activity by means of invasive needle electromyography (EMG) during a specific sailing technique (hiking) on a self-constructed sailing ergometer. Hiking is a bilateral and multi-joint submaximal quasi-isometric movement which dinghy sailors use to optimize boat speed and to prevent the boat from capsizing. Large stresses are generated in the anterior muscles that cross the knee and hip joint, mainly employing the quadriceps at an intensity of 30–40% maximal voluntary contraction (MVC), sometimes exceeding 100% MVC. Better sailing level is partially determined by a lower rate of neuromuscular fatigue during hiking and for ≈60% predicted by a higher maximal isometric quadriceps strength. Although useful in exercise testing, prediction of hiking endurance capacity based on the changes in surface EMG in thigh and trunk muscles during a hiking maintenance task is not reliable. This could probably be explained by the varying exercise intensity and joint angles, and the great number of muscles and joints involved in hiking.

Highlights

• Dr Jacques Rogge, former president of the International Olympic Committee and Olympic Finn sailor, was the first to study muscle activity during sailing using invasive needle EMG to obtain his Master degree in Sports Medicine at the Ghent University.

• Hiking is a critical bilateral and multi-joint movement during dinghy racing, accounting for >60% of the total upwind leg time. Hiking generates large stresses in the anterior muscles that cross the knee and hip joint.

• Hiking is considered as a quasi-isometric bilateral knee extension exercise. Muscle activity measurements during sailing, recorded by means of EMG, show a mean contraction intensity of 30-40% maximal voluntary contraction with peaks exceeding 100%.

• Hiking performance is strongly related to the development of neuromuscular fatigue in the quadriceps muscle. Since maximal strength is an important determinant of neuromuscular fatigue during hiking, combined strength and endurance training should be incorporated in the training program of dinghy sailors.

  相似文献   

Nrf2在有氧运动训练中对小鼠骨骼肌抗氧化能力的作用     

何诗依  张缨 《北京体育大学学报》2017,40(12):50-54

摘要：目的：Nrf2是机体氧化还原平衡的主要调节因子，本研究试图探讨Nrf2在有氧运动训练中对小鼠骨骼肌抗氧化能力的作用。方法：8周龄野生C57BL/6J小鼠和Nrf2敲除小鼠40只，雌雄各半。进一步各为安静组和运动组，每组10只，共4组：分别为野生安静组（WC），野生运动组（WE），敲除安静组（KC）和敲除运动组（KE）。运动组进行4周运动强度为70%VO2max跑速的跑台运动，每周运动6 d，每天运动1 h。运动组最后一次运动后休息48 h脱颈处死，取小鼠后腿骨骼肌。RT-PCR测量Nrf2及Nrf2介导的抗氧化基因mRNA表达量；Western blot法测定骨骼肌Nrf2及抗氧化蛋白含量； GSH试剂盒测量GSH/GSSG比值。结果：1）在安静情况下，KC组和WC组相比，骨骼肌中GSR、NQO1、GCLc、GPX、HO-1和SOD2这6个抗氧化蛋白表达以及GSH/GSSG值没有显著性改变。 2）4周有氧运动训练之后，Nrf2敲除运动组的大部分抗氧化蛋白（CAT, NQO1-1, GCLc, HO-1 and SOD2）和GSH/GSSG值都要显著低于野生运动组。结论：4周70%VO2max强度的有氧运动训练，增加了成年Nrf2敲除和野生鼠骨骼肌抗氧化蛋白表达量和GSH/GSSG比值的差异，而在无训练安静情况下在两种鼠中这些指标的差异不大。说明Nrf2对有氧运动训练中骨骼肌的抗氧化反应起着非常重要的作用。  相似文献