化学类论文中溶液组成的规范表达     

马英霞  李学良 《编辑学报》2008,20(1):38-40

采用GB3102.8-1993中规定的量名称和量符号是规范溶液组成表达的依据和基础.该标准中列出的相关量名称和量符号可划分为"浓度"类、"分数"类和"比"类.进一步分析指出:对由SI基本量"物质的量"导出的导出量,必须遵守使用单位"摩尔"应指明物质的基本单元的使用规则;组合单位中词头的选用应符合有关词头的使用规则;量纲一的量的量值表达则需遵守相关规则.据此,就目前化学类论文中有关溶液组成的几个常见问题进行简析.  相似文献   

广州市体育健身娱乐场所的调查分析   总被引：7，自引：1，他引：6  

李永坤 《广州体育学院学报》1997,(1)

全民健身计划提出了要开发适应群众消费水平的体育健身、康复、娱乐等市场。本文通过对广州市体育健身娱乐场所的调查,调查显示广州市体育健身娱乐市场,具有健身与娱乐、群体参与、经济效益和竞争激烈的特征。建议体育健身娱乐市场今后应向多功能大众化方向发展,并使部分能为实施全民健身计划服务。  相似文献   

运用《艺术体操评分规则》促进我国艺术体操运动的发展   总被引：1，自引：0，他引：1  

夏西薇 《天津体育学院学报》1993,8(2):73-77

就近几年《艺术体操评分规则》的修改情况和因此而形成的世界艺术体操发展趋势,结合我国在执行该评分规则中出现的一系列问题进行分析研究,提出根据规则精神制定总体发展战略的建议。  相似文献   

Sport-based physical activity intervention on body weight in children and adolescents: a meta-analysis     

Kyungun Kim  Gina Ok  Soeun Jeon  Minsoo Kang 《Journal of sports sciences》2017,35(4):369-376

Controversial results reported in past research pertaining to the effectiveness of sport-based physical activity interventions on weight loss. The purpose of this study was to assess the impact of sport-based physical activity intervention on body weight in children and adolescents using a meta-analysis. Academic Search Complete, Education Source, ERIC, Medline, ProQuest, PsycINFO and SportDiscus databases were searched from January 2000 to April 2015. Eighteen studies met following inclusion criteria: sport-based intervention studies; subjects aged 6–18 years; reported body weight; published in peer-reviewed journals written in English. The mean intervention duration was 17.72 weeks. The overall effect size (ES) was 0.52 (Cohen’s d (ES) = 0.52, 95% CI = 0.08, 0.95, P = 0.021), using a random effects model. Moderator analyses results showed that the Q statistic for the sport type (individual sport or team sport, Qbetween (Q_b) = 14.52, df = 1, P = 0.001) and diet control (Qbetween (Q_b) = 8.85, df = 1, P = 0.001), explained the heterogeneity of ESs. Our study showed that there was a moderate overall effect of sport-based physical activity intervention on body weight reduction. The team sport type (ES = 1.05, 95% CI = 0.44, 1.66) and diet control group (ES = 0.84, 95% CI = 0.26, 1.41) appeared to be more effective in reducing body weight.  相似文献   

基于Cite Space的国内身体功能训练研究计量学分析     

蒋晓帆 《体育科技文献通报》2020,(1):155-157

运用中国知网(CNKI)检索库进行检索,共查找到期刊文献115篇,其中国内期刊65篇,硕士论文31篇。通过Cite Space和中国知网(CNKI)文献分析功能,对国内身体功能训练研究进行计量学分析。研究的基本特征表现为:研究机构多,文献期刊发表数量较少,核心期刊占比较少,论文质量与数量之间存在差异。研究热点以身体功能训练为主,并突显了“功能训练”“训练”和“体育工作者”等关键词,作者合作比较少,仅形成数个微小的作者合作网络。  相似文献   

Estimating fat-free mass in elite-level male rowers: a four-compartment model validation of laboratory and field methods     

Kristina L. Kendall  David H. Fukuda  Parker N. Hyde  Abbie E. Smith-Ryan  Jordon R. Moon  Jeffrey R. Stout 《Journal of sports sciences》2017,35(7):624-633

The purpose of this study was to investigate the accuracy of fat-free mass (FFM) estimates from two-compartment (2C) models including air displacement plethysmography (ADP), ultrasound (US), near-infrared interactance (NIR), and the Jackson and Pollock skinfold equation (SKF) against a criterion four-compartment (4C) model in elite male rowers. METHODS: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.2 years; stature: 191.4 ± 7.2 cm; mass: 87.2 ± 11.2 kg) participated in this investigation. All body composition assessments were performed on the same day in random order, except for hydrostatic weighing (HW), which was measured last. FFM was evaluated using a 4C model, which included total body water from bioimpedance spectroscopy, body volume from HW, and total body bone mineral via dual-energy X-ray absorptiometry. The major findings of the study were that the 2C models evaluated overestimated FFM and should be considered with caution for the assessment of FFM in elite male rowers. Future studies should use multiple-compartment models, with measurement of TBW and bone mineral content, for the estimation of FFM.  相似文献   

高原体能训练对我国高水平优秀篮球运动员身体机能与形态的影响研究     

卓金源  吴赵昭  徐旻霄  罗安民  王卫星  赵杰修  米靖 《北京体育大学学报》2017,40(3):93-100

摘要：以2015年中国男篮高原期间体能训练为研究对象，在高原训练过程中对中国男篮队员进行体能训练干预并进行追踪测试，并对高原前后身体机能与身体形态的变化进行深入研究，以期对高水平篮球运动员的高原体能训练进行科学化探索。方法：使用韩国Bio Space公司Inbody3.0体成分测试仪分别在上高原和下高原前测试身体成分；使用贝克曼库尔特公司GEN.S血细胞分析仪等仪器分别在上高原、高原中和下高原前测试身体机能。结果： HB、RBC和HCT在高原训练后都发生了显著的变化（P<0.01）；BUN与CK呈现先升高、再降低趋势；T与C则先降低、后升高；T/C则呈逐步上升趋势，但无显著性差异；身体成分中除了脂肪含量、腰臀比和体脂百分比有显著降低外（P<0.05），其他指标没有显著变化（P>0.05）。结论： 1）高原体能训练可以显著提高篮球运动员血液携氧能力，这种能力在高原训练第11天的测试中发现有明显的提高，并于第21天达到非常显著水平。因此要改善篮球运动员机能水平，高原体能训练应至少持续21天。2）BUN和CK呈先上升后下降的趋势，且与高原体能训练负荷量的变化密切相关，因此BUN和CK可以作为今后高原体能训练负荷量控制的参考指标。3）T和C呈先下降后上升趋势，T/C则呈升高趋势，说明此次高原训练负荷安排科学合理，运动员没有发生疲劳现象，机体合成代谢能力得到提高。4）高原体能训练可以降低篮球运动员的体脂含量，但对肌肉围度的影响则与高原训练的高度、形式及负荷有关。5）此次高原体能训练模式可以作为其他高水平篮球队进行高原体能训练的参考。  相似文献   

高等体育教育供给侧结构性改革的发展理念与策略研究     

叶欣  陈绍军 《武汉体育学院学报》2017,51(7):85-89

围绕为什么进行高等体育教育供给侧结构性改革，契合"适应和引领新常态发展的重大创新，适应我国新常态发展的必然要求"这一理论问题，从供给侧结构性改革的导向、目标和内容等方面就如何实施高等体育教育的供给侧结构性改革提出发展理念，继而在教育活动主体结构、教育场域结构和教育创新层次结构等方面对高等体育教育的结构性改革进行策略研究，以期有效改善存在于我国高等体育教育中的结构性问题。  相似文献   

父母教养方式对大学生子女体重指数和身体活动行为的影响研究          下载免费PDF全文

尚博睿 《河北体育学院学报》2019,33(4):74-79

运用问卷调查法和数理统计法，对176名大学生及其父母的饮食、身体活动及教养方式进行调查分析。结果显示，子女同父母在体重指数（BMI）上具有显著正相关关系（r=19，P＜05），而在每周平均身体活动量上无显著相关（r=08，P=17）。回归分析表明，三类教养方式对子女BMI均无直接预测作用，然而专制型父母教养方式对父母与子女BMI的相关关系起间接调节作用（P＜01）；在子女身体活动行为方面，溺爱型父母教养方式更有可能导致子女的身体活动不足（P＜01）。研究结果表明，大学生离开家庭环境后，父母教养方式仍然对子女BMI和身体活动行为产生持续影响，父母与子女BMI方面存在相关关系。为今后在青少年肥胖干预及身体活动促进研究中纳入教养方式因素提供了实证依据。  相似文献   

‘Tidy,toned and fit’: locating healthism within elite athlete programmes     

Seth Brown 《Sport, Education and Society》2017,22(7):785-798

Coaches and athletes have been increasingly inundated with power related ‘truths’ about their bodies, health and performance as they construct their subjectivities. Over the last couple of decades in New Zealand, schools have initiated elite athlete programmes (EAPs) for a select few students based primarily on their athletic ability and fitness levels. Drawing on Gore's techniques of power, my study investigated how healthism and the cult of the body discourses were (re)produced, negotiated and resisted by coaches and elite athletes and how body pedagogies defined and shaped bodies in two high school EAPs. My analysis suggested that ‘toned and fit’ bodies signified responsible athletes compared to ‘fat’ bodies and that elite athletes disciplined their bodies to overcome pain to remain productive. In both EAPs, power circulated at the micro-level of pedagogical practice to normalise and monitor the athletes’ diet, body weight and shape, and reinforced tensions between prudentialism and hedonism.  相似文献