This perspective seems reasonable and ledsport organizations around the world to create specialized training centres where selected talented young athletes practised under the supervision of experienced coaches in order to become professional athletes and integrate with
the youth national teams. In team sports this strategy has been adopted by professional clubs or national sports associations, and starts usually at around 14 years of age. In most cases, the youngsters live, go to school and practice at the training campus, isolated from their families and familiar environments. This choice towards an elite restricted group at an early age raises the problem of talent identification and selection. To recruit adolescents
or pre-adolescents to join a demanding training program on a full commitment basis is a complex task that may generate errors in prognosis.