with the database of web of science as the data source, the author used Citespace II, the latest information visualization citation analysis software, to analyze and process the literature citation data of 2466 articles with the theme of tennis which are included in SCI and SSCI. The publication time, country, institution, journal distribution, main research direction and major authors are shown in visual map. The result of the analysis reveals that the number of the articles published in 2002-2011 shows the tendency of smoothly going downward. The research fields include sports science, psychology, orthopedic surgery, social science, medical surgery, sports rehabilitation, neurology, engineering, internal medicine, computer science, etc. The countries involved are mainly USA, Germany, France, Spain, Canada, Japan, the Netherlands and China, showing imbalanced characteristics of the co-existence of relative concentration and high dispersion. Most of the research institutions are the universities in Europe, the United States and Australia. |