External Loads in Under-12 Players during Soccer-7, Soccer-8 and Soccer-11 Official Matches

The aim of the 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.