Commentary on "Speed and surface steepness affect internal tibial loading during running"

<正>It is a pleasure to write a commentary on the work of Dr.Hannah Rice and colleagues,l who have advanced our understanding of how the mechanical loading environment of the tibia changes as a function of running grade and speed.It is important that we understand how the tibia is loaded during conditions that an individual is likely to encounter when running as it is these internal loads which we believe are responsible for the development of bone-stress injuries.²     

Gut microbiota and obesity:Impact of antibiotics and prebiotics and potential for musculoskeletal health

Obesity is a complex disease with multiple contributing factors.One of the most intensely studied factors during the past decade has been the gut microbiota,which is the community of all microbes in the intestinal tract.The gut microbiota,via energy extraction,inflammation,and other actions,is now recognized as an important player in the pathogenesis of obesity.Dysbiosis,or an imbalance in the microbial community,can initiate a cascade of metabolic disturbances in the host.Early life is a particularly important period for the development of the gut microbiota,and perturbations such as with antibiotic exposure can have long-lasting consequences for host health.In early life and throughout the life span,diet is one of the most important factors that shape the gut microbiota.Although diets high in fat and sugar have been shown to contribute to dysbiosis and disease,dietary fiber is recognized as an important fermentative fuel for the gut microbiota and results in the production of short-chain fatty acids that can act as signaling molecules in the host.One particular type of fiber,prebiotic fiber,contributes to changes in the gut microbiota,the most notable of which is an increase in the abundance of Bifidobacterium.This review highlights our current understanding of the role of gut microbiota in obesity development and the ways in which manipulating the microbiota through dietary means,specifically prebiotics,could contribute to improved health in the host,including musculo skeletal health.     

Impacts of exercise intervention on various diseases in rats

Background:Exercise is considered as an important intervention for treatment and prevention of several diseases,such as osteoarthritis,obesity,hypertension,and Alzheimer's disease.This review summarizes decadal exercise intervention studies with various rat models across 6 major systems to provide a better understanding of the mechanisms behind the effects that exercise brought.Methods:PubMed was utilized as the data source.To collect research articles,we used the following terms to create the search:(exercise[Title]OR physical activity[Title]OR training[Title])AND(rats[Title/Abstract]OR rat[Title/Abstract]OR rattus[Title/Abstract]).To best cover targeted studies,publication dates were limited to"within 11 years."The exercise intervention methods used for different diseases were sorted according to the mode,frequency,and intensity of exercise.Results:The collected articles were categorized into studies related to 6 systems or disease types:motor system(17 articles),metabolic system(110 articles),cardiocerebral vascular system(171 articles),nervous system(71 articles),urinary system(2 articles),and cancer(21 articles).Our review found that,for different diseases,exercise intervention mostly had a positive effect.However,the most powerful effect was achieved by using a specific mode of exercise that addressed the characteristics of the disease.Conclusion:As a model animal,rats not only provide a convenient resource for studying human diseases but also provide the possibility for exploring the molecular mechanisms of exercise intervention on diseases.This review also aims to provide exercise intervention frameworks and optimal exercise dose recommendations for further human exercise intervention research.     

Chronic effects of stretching on range of motion with consideration of potential moderating variables:A systematic review with meta-analysis

Background:It is well known that stretch training can induce prolonged increases in joint range of motion(ROM).However,to date more information is needed regarding which training variables might have greater influence on improvements in flexibility.Thus,the purpose of this metaanalysis was to investigate the effects of stretch training on ROM in healthy participants by considering potential moderating variables,such as stretching technique,intensity,duration,frequency,and muscles stretched,as we...     

Olympic Education and Cross-Cultural Communication

In recent years, Olympic education has received increasingly greater attention. It is not just Olympic host cities that have established specialized Olympic education prograrnmes across the board, but also non-host cities are developing Olympic education activities to different degrees. Olympic education has also become an important project in the Olympic preparatory work, and has been an important project in the preparations for the Beijing Olympics. How to understand Olympic education? There are many different ways of looking at it. This essay attempts to take the unique characteristics of Olympic education as a starting point to explore the important role played by issues of cross-cultural communication in Olympic education.     

Olympic Education and Cross-Cultural Communication

In recent years,Olympic education has received increasingly greater attention.It is not just Olympic host cities that have established specialized Olympic education programmes across the board,but also non-host cities are developing Olympic education activities to different degrees.Olympic education has also become an important project in the Olympic preparatory work,and has been an important project in the preparations for the Beijing Olympics.How to understand Olympic education? There are many different ways of looking at it.This essay attempts to take the unique characteristics of Olympic education as a starting point to explore the important role played by issues of cross-cultural communication in Olympic education.     

国家皮划艇（静水）队训练信息集成分析平台的构建及应用

Using experimental method,software engineering,and mathematical statistics method,an information integration analysis platform for national canoeing team training was developed,which can complete athletes' basic information management,video analysis,multi-parameter synchronous integration,static information digital monitoring and other functions. Application of the platform was used to collect and analyze the training data such as set sail ,the way planning data,and boating in the process of real-time heart rate and heart rate variability characteristics ,and found that some athletes set sail out and into the water,the time difference is too large,sequential paddle was unreasonable;compared Chinese team with the German team,the effect of catching water is not good,paddle frequency control is poor,four athletes is imbalance among the level of technology;using heart rate variability may reflect racing data structure. Chinese canoe team training information integration analysis platform established to achieve canoe training in information acquisition,information integration and data multi-parameter fast feedback.     

Application of e-health programs in physical activity and health promotion

Sedentary behavior has been identified as one of the major causes of many chronic diseases,such as cardiovascular diseases,stroke,cancer,osteoporosis,and type 2 diabetes.1 Modern technology plays a complex role in sedentary behavior—much like a double-edged sword.Specifically,some modern technologies,such as sedentary video games and computer games,have contributed to the epidemic of sedentary behavior and physical inactivity,whereas other novel technologies such as e-health have been increasingly used to promote physical activity(PA)and health.2,3 Indeed,e-health encompasses more than just Internet and medicine.It can include many sophisticated applications that deal with disease prevention and wellness,mobile decision making,emergency interventions,monitoring health,and remote care via mobile devices.     

Nutrition For Marathon Runners In Competition Season

The week or ten days before competition is the time to cut down the amount of training,but the quality of the food must be improved, i.e.comprehensive nutrient must be supplied so as to increase the energy reserve and speed up the recovery form the pre-competition training.Calories in the food supply should be reduced lest it causes the increase of body fat and weight.In pre-competition food, glycogen reserve Should be fully guaranteed, acid food of protein of fat must be replenished exceessively. Runners should eat fruit and vegetables as much as possible to fill up various vitamins and inorganic salts.     

Noname眼中的WC3L

First Speaking第一次说的话"My name is Elroy Pinto aka fnatic.Noname,I am the manager for fnatic.WC3 and head of WC3 on fnatic.com.I have worked on several international projects such as WCReplays.com which is a big American community website.I have also been a manager and head of WC3 for MYM.International back in 2005.Until 2007 I was with MYM until I switched to fnatic.My first venture was a content writer and admin on a national website which soon came to an end.But in my time as a manager I have     

Attack From Serves

Overview To discuss the technique of attacking from serves (a.k.a. serve-attack), you have to understand how to execute the serves, and how to transition to winning shots based on your own playing styles and characteristics. First of all, you ought to focus on the "serve" itself; that is the only technique with which you can proactively control your opponents, and fully demonstrate your ability and creativity, putting pressure on your opponent right from the beginning of a match. Therefore, you have to practice hard to learn this important technique that can help effectively initiate attacks that lead to     

中国瞄准F1(英文)

Involved in the fierce globalcompetition with large cities like thoseof Russia, Egypt, Turkey and theUnited Arab Emirates for the landingof the Formula One WorldChampionship Grand Prix, China'seconomic powerhouse is on a ratherfast track. And Shanghai, as thecountry's largest city, is surely unwillingto give up such a good chance as isexpected to give a boost to its statusas an international metropolis.     

Reflections on obesity,exercise,and musculoskeletal health

Obesity is a disease that has become an epidemic in economically developed countries,and manifests itself at increasing rates in economically developing countries.Obesity is associated with a variety of comorbidities,such as metabolic disease,diabetes,cardiovascular diseases,and musculoskeletal disorders,all resulting in tremendous costs to health care systems around the world,a reduced capacity for work,and reduced quality of life for people with obesity,coupled with physical inactivity,thereby producing a vicious circle of inactivity-induced diseases that enhances obesity.     

“筹奥”与“非典”同行

Preparations for the 2008 Olympic Games remain on track despite the postponement of some activities due to SARS."There is no big effect on us," said Sun Weijia, deputy director of the Media and Communications Division of the Organizing Committee of the 2008 Olympic Games. "Everything is going smoothly and we are trying to push our work forward as scheduled."     

Coronavirus disease(COVID-19):The need to maintain regular physical activity while taking precautions

The on-going Coronavirus disease(COVID-19)outbreak in China has become the world's leading health headline and is causing major panic and public concerns.On January 30,2020,the World Health Organization(WHO)declared that the new coronavirus outbreak is a public health emergency of international concern.1 The virus has already had a direct impact on more than 10 million people in the city of Wuhan and has reached other parts of China as well,posing a health threat of unknown magnitude globally.As of February 8,2020,WHO reported 34,886 confirmed cases of COVID-19 globally,with 34,589 of them occurring in China(including 6101 severe cases and 723 deaths).A total of 288 other confirmed cases(with 1 death)have been reported in 24 countries,including Japan,Australia,Germany,and United States.2 However,these daily estimates are expected to rise even higher as reports from health authorities in China3 are gathered and near real-time updates of the Johns Hopkins virus dashboard are made 4 The outbreak has caused governments in various countries to take swift and protective measures.In China,these included putting cities on lockdown,5 implementing travel wamings/bans and cancellations,6 extending national holidays,and closing schools and postponing classes7.     

Paris,My New Starting Point An Interview iwth Kong Linghui

Relaxed after SydneyQ: It is the 1st time since 1995 that you have to play in the qualification matches of the national team in order to take part in the World Championships. How do you think of that?A: I think this is normal as the national team is setting up a more competitive internal system which will encourage the upcoming players. In the warm-up matches held in Huiyang and Shengzhou, 3 out of the 5 key players qualified for Paris. Two winners from 2 rounds of inter-team competitions will also qualify and the last 2 players will be selected by the coaches. I feel quite comfortable as it is equal     

赛场回眸

Mark Miles, head of the body which governs men's professional tennis,sees China as the sport's most important growth market and says now is theright time to build on the potential. "China is regarded by the ATP as the most important possible growth marketfor tennis in the world, and Beijing is obviously at the front for tennis growth inChina," Miles said on the sidelines of theATP China Open, which was won bySpanish teenager Rafael Nadal.     

基于双手抛接球动作的运动协调形成与调节的肌肉工作特征研究

The phenomenon of movement regulation of throwing and catching balls with both hands was studied by using surface electromyography. The parameters and indicators to characterize the inner control of movement regulation system were proposed. The operating characteristic of the muscles involved in movement regulation was quantitatively analyzed,the inner regulatory mechanisms of movement was discussed. The results can provide important reference and is of guiding significance for research areas of motion control,motor learning,physical education and training.     

体育教师教育的实践品性：困境与出路

Enhancing the practical properties of PE teacher education and improving the professional practical abilities of expectant PE teacher substantially could be regarded as the central question and greatest primary task of PE teacher educational reform in China. In this paper ,the sign,essence and root cause for the lack of professional practical abilities of the student teachers were fully expounded. The practical properties of PE teachers were analyzed from the perspective of praxis philosophy and then the regularity and trend of the PE teacher education were discussed. Finally ,the paper puts forward several sustainable strategies on how to enhance the practical properties of PE teacher education. It is necessary to create US teacher professional community to form delicate system and mechanism on cooperating to raise PE teacher;to build "all-way practice teaching cultivation model" so as to promote the students teachers' field study institutionalized and normalized;to attach great importance both to the knowledge learning and practice ability in the teaching of discipline theory,oriented towards professional practical abilities;transcend empirical and technological practice outlook and strengthen reflective practice under the direction of scientific theory,and so forth.     

A Study on Exploring Athletes Mental Potential in the Competition of Olympic Games

There are competitions of severity and tremendous pressures in Olympic Games, full of unpredictability and cruelty, which is mainly because the Olympic Games give athletes a lot of special psychological load, such as athletes' special interests and prestige, the special effect of mental magnetic field in competitions, special sources of stress, the special psychological pressure transmission system, the special con version of roles, the scenes caused by special personality of greed and fluke, and so on.