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Sanchez, M.; Ramirez-Campillo, R.; Hernandez, D.; Carretero, M.; Luis-Pereira, J.M.; Sanchez-Sanchez, J. External Loads in Under-12 Players during Soccer-7, Soccer-8, and Soccer-11 Official Matches. Int. J. Environ. Res. Public Health 2021, 18, 4581. https://doi.org/10.3390/ ijerph18094581
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The aim of this study was to compare the external loads (i.e., displacement distances
and velocities) of 10–11 years-old soccer players during Soccer-7 (i.e., seven-a-side), Soccer-8 (i.e.,
eight-a-side), and Soccer-11 (i.e., eleven-a-side) official matches. Male athletes (n = 133; age, 10.9 ± 0.8
years) were measured during official matches for total distance (TD), relative distance (Drel), maximal
velocity (Vmax), acceleration (ACC), deceleration (DEC), and absolute and relative distance covered
at different velocities. Data during matches were collected using a Global Positioning System unit.
Greater TD was recorded during Soccer-11 compared to Soccer-7 and Soccer-8 (p < 0.01), and greater
Drel during Soccer-11 compared to Soccer-8 (p < 0.05). Absolute ACC was greater during Soccer-11
compared to Soccer-7 (p < 0.01), although relative values for %ACC and %DEC were greater during
Soccer-7 and Soccer-8 compared to Soccer-11 (p < 0.01). Globally, results show that Soccer-11 matches
induce greater external loads compared to Soccer-7 and Soccer-8 matches. Current results may help coaches and soccer-related organizers to plan more suited soccer competitions for young players, with lower external loads
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