| through the databases of Web of Science（WOS）and CNKI, the author retrieved 7,465 and 292 articles respectively about physical activity and health study from 2000 to 2014. The study applies CiteSpace II software to make a knowledge map analysis of the foreign and domestic research documents on physical activity epidemiology and tries to find out the hot research areas and the cutting-edge trend in the field. The result shows that the research activities are quite active in the US, UK, Canada, Australia and some other Western countries, especially the USA. Most of the researches focus on public health, sport science, medical social science and neuroscience. While in China, the researches place emphasis on building environment, social ecology, exercise psychology, etc. Sedentary behavior and health, building environment and physical activity, the problem of obesity are the hot research topics abroad. The foreign researchers usually select the vulnerable groups like children, the aged and women as the research subjects. While their domestic counterparts pay more attention to juveniles and students. The article states that there is a big gap between the researches in China and those in the world in terms of the quantity and quality of the research achievements. Therefore, interdisciplinary studies and international communication should be strengthened. The domestic researchers should pay more attention to basic studies and discipline construction. |
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