收费全文 | 11942篇 |
免费 | 771篇 |
国内免费 | 60篇 |
耳鼻咽喉 | 99篇 |
儿科学 | 182篇 |
妇产科学 | 140篇 |
基础医学 | 1560篇 |
口腔科学 | 200篇 |
临床医学 | 1159篇 |
内科学 | 2829篇 |
皮肤病学 | 436篇 |
神经病学 | 1133篇 |
特种医学 | 653篇 |
外科学 | 1758篇 |
综合类 | 39篇 |
一般理论 | 2篇 |
预防医学 | 510篇 |
眼科学 | 149篇 |
药学 | 693篇 |
中国医学 | 19篇 |
肿瘤学 | 1212篇 |
2024年 | 8篇 |
2023年 | 56篇 |
2022年 | 115篇 |
2021年 | 223篇 |
2020年 | 169篇 |
2019年 | 235篇 |
2018年 | 277篇 |
2017年 | 231篇 |
2016年 | 297篇 |
2015年 | 353篇 |
2014年 | 460篇 |
2013年 | 592篇 |
2012年 | 976篇 |
2011年 | 950篇 |
2010年 | 649篇 |
2009年 | 548篇 |
2008年 | 877篇 |
2007年 | 936篇 |
2006年 | 898篇 |
2005年 | 859篇 |
2004年 | 739篇 |
2003年 | 647篇 |
2002年 | 663篇 |
2001年 | 115篇 |
2000年 | 78篇 |
1999年 | 110篇 |
1998年 | 103篇 |
1997年 | 99篇 |
1996年 | 71篇 |
1995年 | 72篇 |
1994年 | 43篇 |
1993年 | 59篇 |
1992年 | 20篇 |
1991年 | 33篇 |
1990年 | 16篇 |
1989年 | 23篇 |
1988年 | 14篇 |
1987年 | 18篇 |
1986年 | 17篇 |
1985年 | 13篇 |
1984年 | 14篇 |
1983年 | 12篇 |
1982年 | 17篇 |
1981年 | 14篇 |
1980年 | 7篇 |
1979年 | 5篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1975年 | 7篇 |
1973年 | 3篇 |
Methods: Patients (n?=?59; mean age =65.4?±?10.3) aged ≤80?years with first stroke and able to cycle at 50 revolutions/minute enrolled 3–10?weeks post stroke. Patients were randomly allocated to three month active cycling group (n?=?33) or to a control group (n?=?26), 3?x?30?minutes training/week. Afterwards, the active cycling group was randomized into a coaching (n?=?15) versus non-coaching group (n?=?16) for nine months. Physical activity was measured by objective and self-reported measures, which were taken before/after the active cycling program and during six and 12?months, except the Baecke-questionnaire, which was used at baseline and 12?months.
Results: A significant difference was found in Baecke/sport (95% confidence interval: 0.06, 2.24; p?=?0.039) between the active cycling group and the control group, in patients with severe motor function deficits at baseline. Patients in the control group performed significant less sports at 12?months (mean Baecke/sportbaseline =3.07?±?1.21, mean Baecke/sport12months?=?1.43?±?0.98; p?=?0.01). Furthermore, all groups showed significant changes over time in all measures at three months (except: Physical Activity Scale for Individuals with Physical Disabilities, diary/Mets*minutes-moderate) and 12?month and additionally in a subgroup with severe motor function deficits (except diary Mets*minutes-sedentary).
Conclusion: When active cycling combined with education is used in subacute patients with severe motor function deficits, more sport participation might be observed after one year. No other significant group differences were found over time. In all groups, however, patients showed significant improvement over time in physical activity measures. Future work is needed to explore the most effective coaching approach after an aerobic training program.
- Implications for Rehabilitation
The active cycling program combined with education is applicable in subacute stroke patients as it required little stand-by assistance due to chip cards, the intensity was gradually built and the involvement of caregivers in the educational sessions. This training approach also revealed applicable in severely impaired stroke patients and might facilitate sport participation on the long-term.
This randomized controlled study aims to quantify physical activity after stroke by using a combination of objective and self-report measures, which revealed detailed information about different aspects of physical activity levels.
There is a need for coaching approaches that facilitate aerobic exercise after ending a supervised program. A coaching approach needs to guide patients in adopting aerobic exercise as a part of a lifestyle change and needs to be less time consuming.