Mechanical Player Load™ using trunk-mounted accelerometry in football: Is it a reliable, task- and player-specific observation?

Paulo Barreira, Mark A Robinson, Barry Drust, Niels Nedergaard, Raja Mohammed Firhad Raja Azidin, Jos Vanrenterghem


The aim of the present study was to examine reliability and construct convergent validity of Player Load™ (PL) from trunk-mounted accelerometry, expressed as a cumulative measure and an intensity measure (PL · min-1). Fifteen male participants twice performed an overground football match simulation that included four different multidirectional football actions (jog, side cut, stride and sprint) whilst wearing a trunk-mounted accelerometer inbuilt in a global positioning system unit. Results showed a moderate-to-high reliability as indicated by the intra-class correlation coefficient (0.806-0.949) and limits of agreement. Convergent validity analysis showed considerable between-participant variation (coefficient of variation range 14.5-24.5%), which was not explained from participant demographics despite a negative association with body height for the stride task. Between-task variations generally showed a moderate correlation between ranking of participants for PL (0.593-0.764) and PL · min-1 (0.282-0.736). It was concluded that monitoring PL® in football multidirectional actions presents moderate-to-high reliability, that between-participant variability most likely relies on the individual's locomotive skills and not their anthropometrics, and that the intensity of a task expressed by PL · min-1 is largely related to the running velocity of the task.

Original languageEnglish
JournalJournal of Sports Sciences
Issue number17
Pages (from-to)1674-1681
Number of pages8
Publication statusPublished - Sept 2017


  • Acceleration
  • Accelerometry/methods
  • Adult
  • Anthropometry
  • Biomechanical Phenomena
  • Geographic Information Systems
  • Humans
  • Jogging/physiology
  • Male
  • Motor Skills/physiology
  • Reproducibility of Results
  • Soccer/physiology
  • Task Performance and Analysis
  • Torso


Dive into the research topics of 'Mechanical Player Load™ using trunk-mounted accelerometry in football: Is it a reliable, task- and player-specific observation?'. Together they form a unique fingerprint.

Cite this