TY  - JOUR
PY  - 2016//
TI  - Mechanical Player Load™ using trunk-mounted accelerometry in football: is it a reliable, task- and player-specific observation?
JO  - Journal of sports sciences
A1  - Barreira, Paulo
A1  - Robinson, Mark A.
A1  - Drust, Barry
A1  - Nedergaard, Niels
A1  - Raja Azidin, Raja Mohammed Firhad
A1  - Vanrenterghem, Jos
SP  - 1674
EP  - 1681
VL  - 35
IS  - 17
N2  - 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>
LA  - en
SN  - 0264-0414
UR  - http://dx.doi.org/10.1080/02640414.2016.1229015
ID  - ref1
ER  -