Since sports science is an interdisciplinary subject area, you can find useful articles in various databases. Here you can find international sports science research:
The interdisciplinary nature of sports science means that you may need to search other subject databases. Here are some suggestions that may be relevant:
Eurydice
The European Encyclopedia on National Education Systems - Information on education systems in 33 European countries
World Data on Education, Unesco
Detailed and systematized information on education systems of 163 countries worldwide, with a particular emphasis on curricula and curriculum development processes.