The objective of this study was to study the validity and reliability of WIMU during 10m and 30m sprints, during team sports specific movements and the reliability during very high speeds (> 30 km/h).
GPS systems are commonly used to analysis football performance during either trainings or matches. While many studies have investigated the validity and reliability of these devices, there is a lack of objective procedures regarding synchronization with gold standards such as real distance or timing gates. This the first study that uses a high-speed video camera synchronized via software with a GPS device and timing gates to determine the sprint start point and sprint split. In conclusion, WIMU showed to be valid and reliable for measuring sprints at speed higher than 20 km/h as well as team sport movements