External Load During Warm-Up and Early-Match Running Performance of Starting and Substitute Football Players: A Within-Player Comparison

Objectives

This study aimed to: (1) compare the absolute and relative external load during the warm-up of starting and substitute professional football players; (2) describe the subsequent running performance during the first 15 min of match play; and (3) quantify the within-player variability of the warm-up (WU) external load between roles.