@article{ref1,
title="Mechanical Player Load™ using trunk-mounted accelerometry in football: is it a reliable, task- and player-specific observation?",
journal="Journal of sports sciences",
year="2016",
author="Barreira, Paulo and Robinson, Mark A. and Drust, Barry and Nedergaard, Niels and Raja Azidin, Raja Mohammed Firhad and Vanrenterghem, Jos",
volume="35",
number="17",
pages="1674-1681",
abstract="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 [soccer] 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. <br><br>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.<p /> <p>Language: en</p>",
language="en",
issn="0264-0414",
doi="10.1080/02640414.2016.1229015",
url="http://dx.doi.org/10.1080/02640414.2016.1229015"
}