Exploring the effects of interchange rotations on high-intensity activities of elite futsal players

The literature lacks an understanding of the physical demands team sports with unlimited substitutions (player interchange rotations). Because this characteristic game, it is necessary to analyze requirements through player rotation rather than analyzing global averages. objective research investigate relationship between high-intensity activities (HIA; sum accelerations, decelerations, and high-speed running actions) performed per rotations match time variables (playtime, rest time, work–rest ratio) in elite futsal players. A retrospective observational design was used. Twelve matches from male competing Premier Spanish Futsal League were analyzed using a local positioning system, yielding total sample 17 number HIA varies players allows identification three distinct activity profiles—lower (10 HIA), medium (28 higher (38 HIA). Furthermore, these profiles found be stable alongside existing throughout match. Playtime ( F = 40.9, p < .001) ratio 15.6, are that best differentiate profiles. Players more playing (4.6 ± 1.0 min) equal or greater 1 (1.1 0.6 a.u.) have ability repeat rotation.