Background:Overweight and obesity are related to maternal and infant physical health, such as gestational diabetes, preeclampsia, and macrosomia. The purpose of this meta-analysis was to assess the effect of physical exercise on maternal and infant outcomes in overweight and obese pregnant women. Methods: Two researchers independently searched Cochrane Library, Embase, PubMed, Web of Science, and ClinicalTrials.gov. for English-language articles based on randomized controlled trials examining physical exercise in overweight and obese pregnant women and its effect on maternal and infant outcomes. Primary outcomes were gestational weight gain and a relative risk of gestational diabetes. Secondary outcomes were gestational hypertension, preeclampsia, cesarean delivery, birthweight, large for gestational age, small for gestational age, macrosomia, and preterm birth. Risk bias was evaluated by Cochrane Collaboration's tool. The results of integration were reported as relative risks (RR), mean difference, or standard mean difference with 95% confidence intervals (CI). This meta-analysis was registered on PROSPERO on November 18, 2017, with registration number CRD42017081565. Results: Thirteen studies involving 1439 participants were included. Physical exercise reduced gestational weight gain (mean difference = −1.14 kg, 95% CI = [−1.67 to −0.62], P < 0.0001) and the risk of gestational diabetes (RR = 0.71, 95% CI = [0.57-0.89], P = 0.004) in overweight and obese pregnant women. There were no significant differences in other outcomes such as gestational hypertension, preeclampsia, cesarean delivery, birthweight, large for gestational age, small for gestational age, macrosomia, and preterm birth. Conclusions: Prenatal exercise interventions reduced gestational weight gain and the risk of gestational diabetes for overweight and obese pregnant women, which reinforced the benefits of exercise during pregnancy. However, no evidence was found with respect to benefits and/or harm for infants. Consideration should be taken when interpreting these findings as a result of the relative small sample size in this meta-analysis.Further larger well-designed randomized trials may be helpful to assess the short-term and long-term effects of prenatal exercise on maternal and infant outcomes. K E Y W O R D Sexercise, infant health outcomes, maternal health outcomes, meta-analysis, overweight and obesity 212 | DU et al.

Regular use of PFMT provided symptom relief and improved quality of life among women with UI.

Aim: To evaluate the output of scientific publications in obstetrics and gynecology journals from Mainland China and six other countries, to compare the difference of research situation between Mainland China and the developed countries in order to measure the trend of number of publication in the field of Obstetrics and Gynecology. Methods: Information on article amounts, impact factors (IF), citation and publication in high-impact obstetrics and gynecology journals by seven top-ranking countries between January 1, 2007 and August 31, 2017, was extracted from Web of Science databases. Results: A total of 137 661 articles were published between 2007 and 2017 in the 98 obstetrics and gynecology journals. The cumulative IF and citations of articles from USA were the highest. The highest average citation was France and Mainland China ranked fourth. There were 52 631 papers published in the top 10 obstetrics and gynecology journals and the USA accounted for the majority of these papers (33 978, 64.6%), followed by England (8347, 15.9%). Articles from the USA were most often published in American Journal of Obstetrics and Gynecology (10658) and those from Mainland China were mostly published in Fertility and Sterility (809). Conclusion: The USA published the most articles having high IF, making the greatest contribution to the field of obstetrics and gynecology. Although the number of scientific publications from Mainland China has rapidly increased from 2007 to 2017, the quality of these publications has not been as satisfactory. It implys that Chinese current academic evaluation system should pay special attention to the quality of academic papers, instead of the number of papers published by scientists. Icluded 137661 of studies included in qualitative synthesis (meta-analysis) Figure 1 Flow of information through the different phases of a systematic review.696

This paper focuses on the recent development of the National Cultural Information Resources Sharing Project in China. This is a national scale project that was initiated by the Chinese central government and has stimulated immense academic attention. Specifically, this paper attempts to understand people’s expectations and requirements on the project. Moreover, this paper aims to articulate and provide specific and useful suggestions for relevant politicians and project operators so that public expectations and requirements can be carefully met. A survey was used to sample a very large and widely distributed population in China, with a questionnaire designed and disseminated through an online survey service platform. A total of 1,076 usable responses were returned and 29 invalid response cases were discarded, yielding an effective response rate of 97.3 percent. An evident public expectation has emerged from the data collected which shows that the Chinese public primarily expects a comprehensive, convenient and unified one stop online access portal to all types of Chinese digital cultural heritage. This paper is of interest to Chinese government officials as well as professionals working at libraries, museums, archives and other cultural institutions in China. Furthermore, although the context of this study is China, the research findings, insights and experiences gained in this study can be shared across international borders.

Aim To quantitatively analyse factors related to gastrointestinal bleeding after percutaneous coronary intervention and provide evidence for the prevention of gastrointestinal bleeding. Data Sources and Review Methods Cochrane Library, Pubmed, Embase, and Ovid databases were searched from inception to 31 May 2018; case‐control and cohort studies published in English were included. The methodological quality of each study was assessed by two independent reviewers using the Newcastle‐Ottawa Scale. Meta‐analysis was performed using Revman version 5.3. Results A total of 16 publications yielded data about risk factors. It was found that age older than 70 years, age (per 10‐year increase), female sex, baseline anaemia, history of smoking, history of using alcohol, history of peptic ulcer disease, chronic renal failure, previous bleeding, shock, congestive heart failure, acute myocardial infarction, prior use of inotropic medications, and prior use of antithrombotic medications were positively associated with gastrointestinal bleeding. Four articles yielded data about protective factors. It was found that proton‐pump inhibitor and bivalirudin therapy were negatively associated with gastrointestinal bleeding after percutaneous coronary intervention. Conclusion This research found risk and protective factors which can assist in effective management of this potentially fatal complication.