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1.
工欲善其事,必先利其器   总被引：1，自引：0，他引：1  
IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993IMACS Calendar of Events March 1993工欲善其事,必先利其器@刘天祥…  相似文献   

2.
《集邮博览》2008,(5):72-72
The second session of executive meeting of China 2009 World Stamp Exhibition(’China 2009’ for short)was held in Luoyang,Henan Province on April 8,2008.Yang Xianzu,Chairman of All China Philatelic Federation;Xu Jianzhou, Deputy Director of State Post Bureau;Tan Xiaowei,standing Vice-President of All China Philatelic Federation;Liu Weijia, Secretary-General of All China Philatelic Federation;Chen Xiaowei,Chief of Department of Public Service of State Post Bureau;Li Yongming,Vice-Manager  相似文献   

3.
The article presents the most important results of metabolic (hormonal) study of dosed vibration training (DVT).The author presents vibrating training as an alternative to anabolic steroids on the basis of a comparison of the effectiveness of two types of stimulants - forbidden (doping) and non-medicinal non-invasive, relating to permitted physical means.The study shows that the level of androgens (testosterone),corticosteroids (cortisol), thyroid hormones (thyroxine,triiodothyronine),hormones of adenohypophysis (prolactin) increased under the effect of dosed vibration training.At the same time the level of hormones have no changes under traditional strength training with the use of a synthetic anabolic steroid (retabolil).For the duration of a limited period of time (1 microcycles) dosed vibrotraining causes a more powerful secretion of testosterone than the traditional strength training with the use of anabolic steroids. In this case,the overall time spent on the performance of the DVT training program comprises not more than 15% of the time spent on the traditional training exercises.  相似文献   

4.
《集邮博览》2008,(10):66-66
The Cooperation Signing Ceremony of China Life and China 2009 World Philatelic Exhibition (‘China 2009’) was held in Luo Yang,August 25,2008. The following members attended the ceremony:Mr.Zhong Fan,GM Assistant of Strategic Planning Department of China Life Insurance Company Lid,Mr.Kuai Tongwen,General Manager of He Nan Branch of China Life Insurance Company Ltd,Mr.Yang Haifu,Secretary-General of Executive Committee of World Philatelic Exhibition and General Manager of He Nan Postal Service Company,Mr.Guo  相似文献   

5.
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.  相似文献   

6.
奥运短讯     
Steel Group to Partly RelocateShougang Group, one of China's largest steel mills, plans to move some of its facilities out of Beijing next year to further ease pollution in the city ahead of the 2008 Olympic Games.The facilities, capable of producing 2 million tons of steel per year, will be relocated to Qian'an County in Hebei Province, which borders Beijing. Shougang has an iron ore base in Qian'an.Shougang, located in southwestern Beijing, used to be one of major polluters in the city.  相似文献   

7.
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.  相似文献   

8.
复杂性思维视域中的运动训练科学研究：反思与重构   总被引：1，自引：1，他引：0  
In recent decades,complexity thinking is only gradually rise of a scientific research and explore new ways of thinking,since it is the modern understanding of the world beyond the simplicity of thinking. Under the thinking of traditional simple theoretical sports training has shown its limitations and practice alienation. Sports training system is a complex system,and complexity is the important characteristic. The traditional theory of sports training complex thinking reflection,many of which are easy to find theoretical proposition predicament. Based on the complexity of sports training ,remodeling complex scientific sports training perspective achieve athletic training research paradigm from simple to complex gradually paradigm.  相似文献   

9.
Background:The evidence concerning which physical exercise characteristics are most effective for older adults is fragmented.We aimed to characterize the extent of this diversity and inconsistency and identify future directions for research by undertaking a systematic review of metaanalyses of exercise interventions in older adults.Methods:We searched the Cochrane Database of Systematic Reviews,PsycInfo,MEDLINE,Embase,CINAHL,AMED,SPORTDiscus,and Web of Science for articles that met the following criteria:(1)meta-analyses that synthesized measures of improvement(e.g.,effect sizes)on any outcome identified in studies of exercise interventions;(2)participants in the studies meta-analyzed were adults aged 65+or had a mean age of 70+;(3)meta-analyses that included studies of any type of exercise,including its duration,frequency,intensity,and mode of delivery;(4)interventions that included multiple components(e.g.,exercise and cognitive stimulation),with effect sizes that were computed separately for the exercise component;and(5)meta-analyses that were published in any year or language.The characteristics of the reviews,of the interventions,and of the parameters improved through exercise were reported through narrative synthesis.Identification of the interventions linked to the largest improvements was carried out by identifying the highest values for improvement recorded across the reviews.The study included 56 meta-analyses that were heterogeneous in relation to population,sample size,settings,outcomes,and intervention characteristics.Results:The largest effect sizes for improvement were found for resistance training,meditative movement interventions,and exercise-based active videogames.Conclusion:The review identified important gaps in research,including a lack of studies investigating the benefits of group interventions,the characteristics of professionals delivering the interventions associated with better outcomes,and the impact of motivational strategies and of significant others(e.g.,carers)on intervention delivery and outcomes.  相似文献   

10.
In this study,surface EMG signals from bilateral erector spine as well as kinematic variables of lumbar spine of 20 male adult subjects were recorded and analyzed synchronically during their performances of trunk flexion-extension with 7 different lift loads. The results showed that different lifting load has no effect on both inclination angle and flexion angle at the time of EMG-off or EMG-on ,and flexion relaxation phenomenon of erector spine either. With the increase of lifting load,the maximum low back moment,the low back moment at the time of EMG-off and that at the time of EMG-on be－ came significantly larger. In the load-sharing relationship,the passive tissue could not significantly get a compensation from muscular activation of erector spine,which is a highly risk situation of injury for passive tissues in low back area especially when lifting with a greater load.  相似文献   

11.
球场推介     
BEIJING GOLF CLUB was set up in March 1985 as ajoint project of China International Sports Travel Co. whichbelongs to State Sport General Administration of China,and Pan-Asia Corporation of Japan. It was opened in June1987 after two years of construction and it is now one ofthe most famous golf clubs in China. The Club is located in the east bank of Chaobai River inShunyi District, northeast of the Capital International Airportand is around 35 kilometers far from the center of…  相似文献   

12.
Background:Research on achievement goal orientations in sport has typically relied on the use of variable-centered approaches that tend to overlook population heterogeneity.In this study,we used a person-centered approach to identify subgroups of competitive tennis players according to unique combinations of achievement goal orientations and tested for subgroup differences in motivation and mental toughness.Methods:A sample of 323 competitive tennis athletes(69.35%male)between 15 and 25 years of age(17.60±2.40 years,mean±SD)completed the 3×2 Achievement Goal Questionnaire for Sport,Sport Motivation Scale Ⅱ,and Mental Toughness Index.Latent profile analysis was used to identify unique combinations of achievement goal orientations.Comparisons between latent subgroups on autonomous motivation,controlled motivation,and mental toughness were performed using analysis of variance.Results:Latent profile analysis supported 3 distinct patterns of achievement goal profiles that were primarily distinguishable based on valence of competence(i.e.,approach vs.avoidance).Analyses of variance indicated that athletes who were classified into subgroups that endorsed approach types of goals(regardless of the types of avoidance goals they endorsed)reported higher levels of autonomous motivation and mental toughness.Conclusion:Results indicated that athletes tend to pursue a number of achievement goals collectively rather than in isolation.Although approach goals are more commonly linked to adaptive psychological functioning and positive outcomes,avoidance goals may also be associated with desirable psychological characteristics if they are pursued in conjunction with approach types of achievement goals.  相似文献   

13.
The special issue of the Journal of Teaching in Physical Education (JTPE)~1 on physical literacy (PL) has provided much needed information about measuring and assessing student learning in terms of the well-defined and yet abstract concept.Multiple authors have elaborated from diverse educational and psychometric perspectives on the development of the construct,the measurement model,and the assessment of the construct.In this attempt,many issues associated with the conception of PL were clarified and insightful information and arguments were brought forward.In this regard,the special issue has moved our understanding of the concept one step further.More importantly,it points to a possibility to actualize the teaching of the concept in physical education (PE).  相似文献   

14.
By constructivism theory and the methods of logical analysis,the paper studied the related theory and the model of the virtual operation competitiveness of the commercial gym clubs. And the results showed that the general management abilities and the virtual collaboration capabilities jointly build the system of the virtual operation competitiveness of the commercial health clubs. The general management abilities are basic abilities that any commercial operation should have,and as the bridge of partners,the virtual collaboration capabilities play more important roles in the virtual operation competence model.  相似文献   

15.
This study examined the change of the myosin Ca2 -ATPase activity of cardiac muscle and gastrocnemius in mice during exhaustive swimming and its recovery preriod．The results of experiment showed that the myosin Ca2 -ATPase activity of both cardiac muscle and gastrocenmius was significantly（p＜0．05）lower in post-exercise than pre-exercise．The myosin Ca2 -ATPase activity of gastrocenmius was still at lower level（P＜0．05）at early of recovery period,however the myosin Ca2 -ATPase activity of cardiac muscle had recovered to beginning level at 0．5h of recovery period．  相似文献   

16.
Purpose:To investigate whether blood flow restriction(BFR) without concomitant exercise mitigated strength reduction and atrophy of thigh muscles in subjects under immobilization for lower limbs.Methods:The following databases were searched:PubMed,CINAHL,PEDro,Web of Science,Central,and Scopus.Results:The search identified 3 eligible studies,and the total sample in the identified studies consisted of 38 participants.Isokinetic and isometric torque of the knee flexors and extensors was examined in 2 studies.Cross-sectional area of thigh muscles was evaluated in 1 study,and thigh girth was measured in 2 studies.The BFR protocol was 5 sets of 5 min of occlusion and 3 min of free flow,twice daily for approximately 2 weeks.As a whole,the included studies indicate that BFR without exercise is able to minimize strength reduction and muscular atrophy after immobilization.It is crucial to emphasize,however,that the included studies showed a high risk of bias,especially regarding allocation concealment,blinding of outcome assessment,intention-to-treat analyses,and group similarity at baseline.Conclusion:Although potentially useful,the high risk of bias presented by original stodies limits the indication of BFR without concomitant exercise as an effective countermeasure against strength reduction and atrophy mediated by immobilization.  相似文献   

17.
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.  相似文献   

18.
In the eyes of experts, Olympic colors are represented in the chains of the Olympic Games, including: buildings, environment, city image, facilities, advertisements, shops, people's clothes and even the colors of autos.Olympic colors should be expressive as to show the lofty aspiration of a nation and enthusiasm of mankind.On the colors for Beijing Olympic Games and for the city itself, a reporter with People's Daily had an interview with experts.  相似文献   

19.
According to the analysis of the current situation and problems of Chinese clothing brand, the corresponding measures are raised from three aspects of brand positioning, brand broadcast and brand exten...  相似文献   

20.
The end off the Road 山径终点At tenth of a mile before the finish line at KatahdinStream Campground, Buzz asked Orient and me to stop whilethe rest of the crowd went ahead. I guess it was right thatOrient and I should walk the last stretch as we began, just thetwo of the Lord and us. It was another one of those moments ofnear completion that was overshadowed by the joy of the process.I felt as if we were counting down the final seconds of agame in which victory had long been assured. At t…  相似文献   

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