Longitudinal changes in sprint performance in relation to fitness development in U-15 soccer players - Iida, T.; Hoshikawa, Y.; Chuman, K.; Ikoma, T.; Muramatsu, M.; Nakajima, Y. (7th World Congress on Science and Football (WCSF), 2011, 2011)
Keywords: soccer; youth; development; performance development; sprint; Japan; sport games; junior sports