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Res Sports Med. 2018 Jan-Mar;26(1):51-63. doi: 10.1080/15438627.2017.1393754. Epub 2017 Oct 23.

Positional synchronization affects physical and physiological responses to preseason in professional football (soccer).

Author information

a Departamento de Desporto e Saúde, Escola de Ciências e Tecnologia , Universidade de Évora , Évora , Portugal.
c CreativeLab Research Community , Research Centre in Sports Sciences, Health Sciences and Human Development, CIDESD, CreativeLab Research Community , Vila Real , Portugal.
b Department of Sports Sciences, Exercise and Health , Universidade de Trás-os-Montes e Alto Douro , Vila Real , Portugal.


This study aimed to identify changes in tactical, physical and physiological performances in large-sided games during the preseason of elite footballers. Thirty professional football players participated in several GK+8vs.8+GK large-sided games across the first four weeks of the season. Players were monitored by GPS units and heart rate monitors to quantify physical, physiological and tactical performances. The variables were compared according to the preseason period, players' positioning and professional experience. The training situation promoted similar physiological responses during the first and the last training period. However, players were revealed to have higher levels of positional synchronization during the last preseason period, indicating an improved tactical performance. Tactical variables seem to reflect the improvement of players' performance during the preseason, measured in large-sided games situation, while affecting both physical and physiological demands. These results highlight the potential of positioning derived variables, concurrently to physical and physiological variables, for football training optimization.


GPS; Interpersonal coordination; motion analysis; performance analysis; team sports

[Indexed for MEDLINE]

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