%0 Journal Article
%T Monitoring Training and Match Physical Load in Junior Soccer Players: Starters versus Substitutes
%J Sports | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/sports7030070
%X The aim of this study was to investigate differences in the physical (locomotor activities) and physiological (Banister¡¯s training impulse) in-season training load between starters and substitutes in a well-trained junior soccer team. Physical performance variables from the Polar Team Pro system were collected and analyzed from a sample of junior soccer players ( N = 18; age = 15.7 ¡À 0.5 years; stature, 177.9 ¡À 4.6 cm; body mass, 67.1 ¡À 5.5 kg). The study analyzed a total of 10 matches and 38 training sessions during the 2018 season with linear mixed models. The players from the starting line-ups demonstrated significantly higher average weekly physical load compared to the non-starters with respect to all variables: distance (total, running, high-speed running, and sprint) [F (1, 573) ¡Ư 66, p < 0.001, eta = 0.10], number of accelerations and sprints [F (1, 573) ¡Ư 66, p < 0.001, eta = 0.10], as well as Banister¡¯s training impulse (TRIMP) [F (1, 569) = 10, p < 0.001, eta = 0.02]. Evidence from this study indicates that a large amount of weekly accumulated high-speed running and sprint distances is related to match playing time. Therefore, weekly fitness-related adaptations in running at high speeds seem to favor the starters in a soccer team. View Full-Tex
%U https://www.mdpi.com/2075-4663/7/3/70