Modeling Longitudinal Changes in 5m Sprinting Performance Among Young Male Te…

Year-to-year changes in sprinting in youth tennis players were examined in a mixedlongitudinal study (256 male players, aged 10–15 years: 993 measurements). Height (h),body mass (BM), lower limb explosive strength (LLES), and a 5-m sprint were measured over five years. During that period, players were classified as elite or sub-elite. To account for the repeated measurements within the indivi…