anthropometry 2 handball investigation method junior elite sport 2 test 2 youth Germany 1 aptitude 1 basketball 1 body indices 1 competition 1 development 1 diagnostics 1 performance 1 performance diagnostics 1 physical conditioning ability 1 playing position (sport games) 1 prognosis 1 relation 1 selection 1 sports federation 1 sports game 1 talent 1 technique 1