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. 2021 Apr 26;18(9):4581.
doi: 10.3390/ijerph18094581.

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

Mario Sanchez  1 , Rodrigo Ramirez-Campillo  2   3 , Daniel Hernandez  4 , Manuel Carretero  1 , Jesus Maria Luis-Pereira  4 , Javier Sanchez-Sanchez  1
Affiliations

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

Mario Sanchez et al. Int J Environ Res Public Health. .

Abstract

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.

Keywords: children; fatigue; injuries; physical exercise; youth sports.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Total distance and total distance relative to match duration during Soccer-7, Soccer-8, and Soccer-11 official matches. ES: effect size; * and **: Significant differences versus Soccer-11 (p < 0.05 and p < 0.01, respectively).
Figure 2
Figure 2
Absolute (m) and relative (%) distance covered in acceleration (ACC) and deceleration (DEC) during Soccer-7, Soccer-8, and Soccer-11 official matches among under-12 players. ES: Effect size. **: Significant difference versus Soccer-11 (p < 0.01).
See this image and copyright information in PMC

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