全文获取类型
| 收费全文 | 11542篇 |
| 免费 | 2篇 |
专业分类
| 教育 | 8930篇 |
| 科学研究 | 1213篇 |
| 体育 | 343篇 |
| 文化理论 | 382篇 |
| 信息传播 | 676篇 |
出版年
| 2022年 | 4篇 |
| 2021年 | 3篇 |
| 2020年 | 4篇 |
| 2019年 | 8篇 |
| 2018年 | 2177篇 |
| 2017年 | 2077篇 |
| 2016年 | 1568篇 |
| 2015年 | 110篇 |
| 2014年 | 116篇 |
| 2013年 | 86篇 |
| 2012年 | 219篇 |
| 2011年 | 688篇 |
| 2010年 | 832篇 |
| 2009年 | 430篇 |
| 2008年 | 640篇 |
| 2007年 | 1146篇 |
| 2006年 | 65篇 |
| 2005年 | 390篇 |
| 2004年 | 445篇 |
| 2003年 | 356篇 |
| 2002年 | 128篇 |
| 2001年 | 6篇 |
| 2000年 | 19篇 |
| 1999年 | 1篇 |
| 1997年 | 15篇 |
| 1995年 | 1篇 |
| 1994年 | 1篇 |
| 1992年 | 1篇 |
| 1991年 | 6篇 |
| 1984年 | 1篇 |
| 1976年 | 1篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
Mirva Rottensteiner Sara Mäkelä Leonie H. Bogl Timo Törmäkangas Jaakko Kaprio Urho M. Kujala 《European Journal of Sport Science》2017,17(9):1184-1193
Purpose: The benefits of physical activity (PA) in preventing abdominal obesity are well recognized, but the role of different sport disciplines remains open. We aimed, therefore, to investigate how participation in different sport disciplines, and the number and types of sports engaged in are associated with waist circumference (WC) in young adulthood. Methods: This population-based cohort study comprised 4027 Finnish twin individuals (1874 men), with a mean age of 34 y (32–37), who answered a survey, including self-measured WC. We extracted the number and identified the types (aerobic, power, and mixed) of the different sport disciplines respondents reported participating in. Results: The number of sport disciplines participated in was inversely associated with WC, the linear decrease averaging 1.38?cm (95% CI 1.10–1.65) per each additional sport discipline. The result persisted after adjustment for the main covariates, such as volume of PA and diet quality. Among dizygotic twin pairs discordant for sports participation (0–2 vs. 5 or more disciplines), the mean within-pair difference in WC was 4.8?cm (95% CI 0.4–9.1) for men and 11.2?cm (95% CI 4.4–18.0) for women; among discordant monozygotic pairs, no differences were observed. In men, all three types of sports were individually associated with smaller WC, while in women, only mixed and power sports showed this association. Conclusions: Participation in several sport disciplines and sport types was associated with smaller WC among young adults in their mid-30s. Shared genetic background may explain some of the associations. 相似文献