Influence of the Area per Player in Non-Professional Soccer Players: A Pilot Study Focused on Positional Roles.

This study analyses the influence of different area per player (A P ; 75, 98 and 131 m 2 ) on the average metabolic power (MP) and other soccer-related performance variables in relation to the positional roles. We recruited 19 non-professional male soccer players (25.2 ± 6.3 y; 23.7 ± 2.3 kg/m 2 ; 16.4 ± 6.3 y soccer experience) to play three different small-sided games (SSGs): SSG1 (5 vs. 5; 30 × 30 m; 5 min), SSG2 (5 vs. 5; 35 × 45 m; 5 min) and SSG3 (7 vs. 7; 35 × 45 m; 8 min). Specific playing rules were applied. GPS-assessed soccer-related variables were: average MP (AMP), distance covered in 1 min (DIS); % time spent at high speed (v > 16 km/h; % hst) or MP (>20 W/kg; % hmpt); % distance covered at high positive/negative speed (2 < v < 4 m/s 2 , % ACC; -6 < v < -2 m/s 2 , % DEC); and number of actions at high MP (hmpa). All recorded variables differed when each SSG was compared to the others ( p < 0.05), but for hmpa for attackers. Most performance variables were positively associated with increasing A P ( p < 0.05), but for % ACC and % DEC, and differed among positional roles within the same SSG ( p < 0.05). Here the general applicability of SSGs, regardless the physical/technical skills of the group of players, to enhance performance is confirmed; furthermore, quantitative advices on AMP and other performance variables are provided to achieve significant improvements in all soccer players of the team.