作者
Lars Engebretsen, Kathrin Steffen, Roald Bahr, Carolyn Broderick, Jiri Dvorak, Per-Mats Janarv, Amanda Johnson, Michel Leglise, Tallal Charles Mamisch, Damien McKay, Lyle Micheli, Patrick Schamasch, Gurcharan Dato Singh, Diane EJ Stafford, Harald Steen
发表日期
2010/6/1
期刊
British journal of sports medicine
卷号
44
期号
7
页码范围
476-484
出版商
British Association of Sport and Excercise Medicine
简介
Most youth sports around the world are classified on the basis of chronological age to guarantee equal chances within each of the different age groups. At the elite level, international sporting federations organise competitions in various age classes ranging from as low as under-13 up to under-21, depending on the sport. In August 2010, the International Olympic Committee (IOC) is conducting the first Youth Olympic Games in Singapore for 14–18-year-old athletes. The standing of these youth competitions has increased to the stage at which falsifications), their validity may be questionable in others. Some countries register births late for geographical, cultural or other reasons, sometimes not until school start. It is also important to note that the home country of a team cannot necessarily guarantee the accuracy of birth certificates, as many teams, particularly from Europe, field players originating from developing …
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