External load diffrences between elite youth and professional football players: ready for take-off? - Houtmeyers, K. C.; Jaspers, A.; Brink, M. S.; Vanrenterghem, J.; Varley, M. C.; Helsen, W. F. (Science and Medicine in Football, 2020)
Keywords: soccer; junior elite sport; professional sport; training; competition; velocity; load; steering; load intensity; Great Britain; sport games; junior sports