Abstract
The aim of this study was to analyze the differences in internal and external
load during Soccer-7 and Soccer-11, comparing positional requirements and
neuromuscular fatigue in both modalities. Twenty-four young soccer players were
monitored in Soccer-7 and Soccer-11 matches using global positioning systems.
Total distance covered (TD), distance covered at high speed (HSR), distance
covered at very high speed (VHSR), peak speed, accelerations (Acc) and
decelerations (Dec) and rate of perceived exertion (RPE) were recorded
differentiating between central backs (CB), midfielders (MF), external players
(EX) and forwards (FW). Neuromuscular fatigue were assessed using a jump test.
During Soccer-11, players showed significantly higher TD, HSR and VHSR, with low
Acc and greater RPE compared with Soccer-7. During Soccer-11, all positions
recorded significantly greater TD, distance at HSR and at VHSR than Soccer-7. In
terms of playing position, CB, MF and FW achieved significantly higher Peak
Speed during Soccer-1, but there was no difference for EX. During Soccer-7 all
positions performed significantly higher numbers of Acc. Although the Soccer-7
modality is considered an optimal format for the development of young soccer
players, there is a significant difference in match running activity for all
playing positions with respect to the Soccer-11 format.
Key words
time-motion - running - GPS - performance - young players
