The within-match patterns of locomotor efficiency during professional soccer match play : implications for injury risk?
Deutscher übersetzter Titel: | Die Muster der lokomotorischen Effizienz innerhalb des Spiels während professionellem Fußballspiel : Implikationen für das Verletzungsrisiko? |
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Autor: | Barrett, Steve; Midgley, Adrian; Reeves, Matthew J.; Joel, Tom; Franklin, Ed; Heyworth, Rob; Garrett, Andrew T.; Lovell, Ric |
Erschienen in: | Journal of science and medicine in sport |
Veröffentlicht: | 19 (2016), 10, S. 810-815, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1440-2440, 1878-1861 |
DOI: | 10.1016/j.jsams.2015.12.514 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201611007948 |
Quelle: | BISp |
Abstract des Autors
Objectives: The principle aim of the current study was to examine within-match patterns of locomotor efficiency in professional soccer, determined as the ratio between tri-axial accelerometer data (PlayerLoad™) and locomotor activities. Between match variability and determinants of PlayerLoad™ during match play were also assessed.
Design: A single cohort, observational study.
Methods: Tri-axial accelerometer data (PlayerLoad™) was recorded during 86 competitive soccer matches in 63 English championship players (574 match observations). Accelerometer data accumulated (PlayerLoad Vector Magnitude [PLVM]) from the individual-component planes of PlayerLoad™ (anterior–posterior PlayerLoad™ [PLAP], medial–lateral PlayerLoad™ [PLML] and vertical PlayerLoad™ [PLV]), together with locomotor activity (Total Distance Covered [TDC]) were determined in 15-min segments. Locomotor efficiency was calculated using the ratio of PLVM and TDC (PlayerLoad™ per metre). The proportion of variance explaining the within-match trends in PLVM, PLAP, APML, APv, and TDC was determined owing to matches, individual players, and positional role.
Results: PLVM, PLAP, APML, APv and TDC reduced after the initial 15-min match period (p = 0.001; η2 = 0.22–0.43, large effects). PL:TDC increased in the last 15 min of each half (p = 0.001; η2 = 0.25, large effect). The variance in PLVM during soccer match-play was explained by individual players (63.9%; p = 0.001) and between-match variation (21.6%; p = 0.001), but not positional role (14.1%; p = 0.364).
Conclusions: Locomotor efficiency is lower during the latter stages of each half of competitive soccer match-play, a trend synonymous with observations of increased injury incidence and fatigue in these periods. Locomotor efficiency may be a valuable metric to identify fatigue and heightened injury risk during soccer training and match-play.