首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3367篇
  免费   138篇
  国内免费   92篇
教育   420篇
科学研究   63篇
各国文化   2篇
体育   2261篇
综合类   846篇
信息传播   5篇
  2023年   1篇
  2022年   27篇
  2021年   81篇
  2020年   79篇
  2019年   67篇
  2018年   66篇
  2017年   57篇
  2016年   92篇
  2015年   87篇
  2014年   218篇
  2013年   284篇
  2012年   296篇
  2011年   296篇
  2010年   240篇
  2009年   183篇
  2008年   202篇
  2007年   202篇
  2006年   205篇
  2005年   192篇
  2004年   153篇
  2003年   98篇
  2002年   119篇
  2001年   87篇
  2000年   81篇
  1999年   47篇
  1998年   39篇
  1997年   36篇
  1996年   23篇
  1995年   10篇
  1994年   9篇
  1993年   4篇
  1992年   13篇
  1991年   3篇
排序方式: 共有3597条查询结果,搜索用时 203 毫秒
101.
采用文献资料法、问卷调查法、数理统计法等,对福州市中年人参加健身跑的情况进行调查分析,明确健身跑运动对中年人身体健康的意义和作用,旨在为中年人更好地进行健身跑运动,提供参考。  相似文献   
102.
The aim of the this study was to establish age- and gender-specific physical fitness normative values and to compare percentiles and Z scores values in a large, nationwide sample of Greek children aged 6–18 years. From March 2014 to May 2014, a total of 424,328 boys and girls aged 6–18 years who attended school in Greece were enrolled. The studied sample was representative, in terms of age–sex distribution and geographical region. Physical fitness tests (i.e. 20?m shuttle run test (SRT), standing long jump, sit and reach, sit-ups, and 10?×?5?m SRT) were performed and used to calculate normative values, using the percentiles of the empirical distributions and the lambda, mu, and sigma statistical method. Normative values were presented as tabulated percentiles for five health-related fitness tests based on a large data set comprising 424,328 test performances. Boys typically scored higher than girls on cardiovascular endurance, muscular strength, muscular endurance, and speed/agility, but lower on flexibility (all p values <0.001). Older boys and girls had better performances than younger ones (p?相似文献   
103.
The present study examined the sex-specific associations of moderate and vigorous physical activity (VPA) with physical fitness in 300 Japanese adolescents aged 12–14 years. Participants were asked to wear an accelerometer to evaluate physical activity (PA) levels of various intensities (i.e. moderate PA (MPA), 3–5.9 metabolic equivalents (METs); VPA, ≥6 METs; moderate to vigorous PA (MVPA), ≥3 METs). Eight fitness items were assessed (grip strength, bent-leg sit-up, sit-and-reach, side step, 50?m sprint, standing long jump, handball throw, and distance running) as part of the Japanese standardised fitness test. A fitness composite score was calculated using Japanese fitness norms, and participants were categorised according to their score from category A (most fit) to category E (least fit), with participants in categories D and E defined as having low fitness. It was found that for boys, accumulating more than 80.7?min/day of MVPA may reduce the probability of low fitness (odds ratio (ORs) [95% confidence interval (CI)]?=?0.17 [0.06–0.47], p?=?.001). For girls, accumulating only 8.4?min of VPA could reduce the likelihood of exhibiting low fitness (ORs [95% CI]?=?0.23 [0.05–0.89], p?=?.032). These results reveal that there are sex-specific differences in the relationship between PA and physical fitness in adolescents, suggesting that sex-specific PA recommendation may be needed to improve physical fitness in adolescents.  相似文献   
104.
The aim of this study was to investigate the effect of low-intensity exercise training using belt electrode skeletal muscle electrical stimulation on muscle strength and cardiorespiratory fitness in healthy subjects. Nineteen healthy subjects were allocated into control or intervention groups; in both groups the participants kept regular physical activity while the intervention group underwent 30 min B-SES training at 3–4 METs for four weeks. Knee extensor muscle strength and cardiorespiratory endurance during incremental exercise test were measured at baseline and after four weeks for all participants. The relative change of knee extensor muscle strength in the intervention group was significantly higher than control group (p?p?相似文献   
105.
以身体成分与心肺功能之间的相关性为研究目的,对本单位社会体育专业09级64名男生进行了身体成分、心率及肺活量测试,研究结果表明:各项身体成分同心率之间相关性不显著;体重与肺活量之间呈显著正相关(P〈0.01),体脂百分比、肌肉百分比同肺活量之间的相关性不显著;体重、体脂百分比与肺活量体重指数之间呈极显著负相关(P〈0.01),肌肉百分比与肺活量体重指数之间呈极显著正相关(P〈0.01).  相似文献   
106.
采用问卷调查法、实地观察法、访谈法等,就农民体育健身工程对赣州市4个县40个行政村的村民进行了调查.结果表明:赣州市100个示范村的工程建设顺利完成,工程选址较合理,无产权纠纷,使用率较高,对社会、生活、环境产生了积极效益.工程管理不够规范、责权不够明确、融资渠道单一、农民的健身意识较差、社会体育指导员缺乏等是工程建设存在的主要问题.同时提出:强化政府职能,加大资金投入;加强体育骨干培训与管理,积极开展农村体育活动;建立完善的农民体育健身工程服务体系等建议,为赣州市乃至江西省农民体育健身工程的可持续发展提供理论依据.  相似文献   
107.
通过文献资料研究及实地访谈,调查了新疆维吾尔族民俗活动中的养生健身成分,发现其健身功能较强,呈现出形式多样、内容丰富又具有民族色彩的特点。认为对养生健身行为的研究和推广,可以推动全面健身运动在新疆的开展。  相似文献   
108.
文章对常州市市区中老年人日常健身活动的情况进行抽样调查。对与常州市市区大部分中老年人体育健身活动有关的锻炼习惯、锻炼方法以及相关部门的组织和宣传、场地器材建设进行了综合分析,提出一些建议及看法,希望在政府和社会各方面共同努力下,不断提高中老年人健身活动意识,提高生活质量。  相似文献   
109.
The concept of physical literacy (PL) has been suggested as one that can offer a catalyst for a new emphasis in physical education (PE). In the broadest sense, a physically literate child is confident, active, and can maintain health enhancing physical activity (PA) for life. PL includes engagement in PA, physical competence, and PA motivation, confidence, knowledge and understanding. The purpose of this study is to investigate the levels of PL in Irish adolescents. As part of a larger study data were collected from 535 (12.78?±?.42 years) adolescents across 20 schools, to measure physical activity, physical competence, and psychological correlates of physical activity. Less than half of participants are accumulating the minimum of 60 minutes of PA daily required for health (49% males, 26% females). Data highlight that Irish youth are performing ‘below par’ across the domains of PL, with cardiovascular fitness (45% of males and 67% of females reaching ‘optimal’ target) and self-efficacy (53% of males and 46% of females reaching ‘optimal’ target) of greatest concern. Findings are discussed in the context of the need for a targeted direction in post-primary PE in Irish schools to increase levels of PL in Irish adolescents.  相似文献   
110.
企业技术管理的适合度景观研究   总被引:5,自引:0,他引:5  
有效的技术管理是提高企业技术竞争力的关键。本文应用适合度景观理论,探讨企业技术管理的适合度及其景观。首先提出技术管理适合度的概念,然后构建技术管理的NK模型,并利用模型描述和分析单一系统和多系统耦合的技术管理适合度景观,最后提出景观理论对提高企业技术管理适合度的启示。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号