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1.
运动员饮食中营养物质的种类和特点   总被引:3,自引:0,他引:3  
运动员的合理饮食是恢复和提高机体工作能力的重要手段之一,是科学训练的一个重要环节。介绍了运动员饮食的主要特点,讨论了蛋白质、脂肪和碳水化合物在运动员饮食中的供能作用和合理比例,以及维生素、无机盐和水等营养物质在运动训练中的重要作用,认为要因项目特点、训练周期、季节变化以及个人差异,对膳食的搭配进行变化。  相似文献   

2.
当今的竞技体育,“科学”一词已经深入到运动训练的各个领域和各个层面.最合理的训练安排、最大限度的挖掘运动员的潜力和延长优秀运动员的运动寿命,用科学的理论指导运动员在训练过程中的各个环节,是每一名教练员的工作职责。北京奥运会,我国运动员所取得的优异成绩是“科学训练和科技兴体”的写照。中国体育的全面振兴和崛起,没有科研的大力支持是无从谈起的。  相似文献   

3.
王旗 《科技信息》2010,(33):I0311-I0311,I0337
力量是决定竞技体育运动成绩的重要体能因素,是评定身体训练水平的重要指标。全面发展身体素质,掌握正确的运动技术,能合理的应用技术技能.在比赛中取得好的运动成绩。这些都离不开对运动员力量的要求,力量对这些都起到了重要作用。中学短跑运动员科学的力量训练对于提高运动员利用能量的能力,从而提高运动员的运动成绩。  相似文献   

4.
随着竞技体育和科学技术水平的不断提高,运动训练的科学化越来越受到体育界的重视。利用客观、定量反映运动员机能状态的血液生物化学指标,对运动员的训练过程实施长期、系统的科学监测,不仅是提高运动员运动训练水平和竞技能力的重要保证,而且也能为教练员及时制定有针对性的训练计划,合理调控运动员的竞技状态提供科学的依据。  相似文献   

5.
代谢组学是一个全面的代谢物评估方法,包括测量生物样本的整体代谢标志物.用代谢组学方法研究运动训练的生物化学变化,可以及时、准确地了解训练对运动员身体机能的影响,系统全面地揭示不同项目运动中的物质代谢过程及特征,探寻运动训练引起运动员整体代谢的反应规律,充分发挥整合生物学的优势.结合代谢组学方法从代谢物层面反映运动训练后整体代谢特征模式,并根据代谢模式制定科学、合理、个性、安全的训练计划和膳食营养方案,对达到最大化运动训练效果、提高运动成绩、促进运动员健康具有重要意义.主要介绍了代谢组学在运动员身体机能监控中的应用现状,随着组学技术的不断发展,代谢组学将在运动医学以及运动人体科学研究的各个领域具有广泛的应用前景.  相似文献   

6.
马中 《韶关学院学报》2012,33(10):77-80
科学选材是青少年举重运动训练的一个重要环节,也是目前运动训练科学研究中的一个重要课题.论文在运动训练实践中,结合举重运动的专项特点,对青少年举重运动员选材的6个要素进行分析,以期为青少年举重运动员的科学选材提供借鉴和参考.  相似文献   

7.
无氧训练过程中的乳酸监控   总被引:5,自引:1,他引:4  
无氧训练是提高运动员运动成绩的重要手段之一。血乳酸是评价运动员无氧训练强度的主要生理生化指标。在无氧训练过程中,如何运用运动员血液中血乳酸值的变化以及根据运动项目的特点及运动员的具体情况调整训练计划,有针对性地发展运动员的代谢能力,实施科学训练,具有重要的意义。  相似文献   

8.
目的:客观评价运动员身体成分的结构和比例是否合理,有效地控制运动员的体重,保证运动员的健康,合理安排运动训练、提高运动成绩和进行科学选材。方法:运用了文献资料法、实验法、归纳演绎法。结论:在实践中,教练员和体育科研人员可以运用体重指数法、皮皱厚度测定法、腰臀比测量、水下称重法来评定运动员身体成分,达到科研和训练相结合的实际效果。同时在对运动员的身体成分进行调控时要合理地控制体重,防止过度训练。  相似文献   

9.
拳击运动员的恢复主要依靠运动量的调整、理疗、按摩等。合理营养是运动员取胜的重要因素之一,是运动员健康和运动能力提高的保证。营养与运动员的训练、技能状态、体力适应、恢复过程以及运动性疾病有着密切的关系。  相似文献   

10.
中长跑运动成绩结构中,适宜的运动量是不可忽视的要素之一。本文认为,在高原进行中长跑训练,由于受低氧环境的影响,合理地控制运动量尤为重要。因而,必须根据受训地区不同的地理环境和气候条件,以及运动员不同的生理特点和运动机能水平,合理控制运动量,才能提高训练成绩。此外,在训练过程中还要注意技术、战术及心理和意志品质方面的培养,使高原中长跑训练在合理地控制科学地安排下顺利进行。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

14.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

15.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

18.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

19.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

20.
The non-orthogonal localized molecular orbital(NOLMO)is the most localized representation of electronic degrees of freedom.As such,NOLMOs are thus potentially the most efficient for linear scaling calculations of electronic structures for large systems.However,direct ab initio calculations with NOLMO have not been fully implemented and widely used,partly because of the slow convergence issue in the optimization of NOLMO.We devel-  相似文献   

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