| Autor: |
Buchheit M; a Football Performance & Science Department , Aspire , Doha , Qatar., Allen A, Poon TK, Modonutti M, Gregson W, Di Salvo V |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of sports sciences [J Sports Sci] 2014 Dec; Vol. 32 (20), pp. 1844-1857. Date of Electronic Publication: 2014 Aug 05. |
| DOI: |
10.1080/02640414.2014.942687 |
| Abstrakt: |
Abstract During the past decade substantial development of computer-aided tracking technology has occurred. Therefore, we aimed to provide calibration equations to allow the interchangeability of different tracking technologies used in soccer. Eighty-two highly trained soccer players (U14-U17) were monitored during training and one match. Player activity was collected simultaneously with a semi-automatic multiple-camera (Prozone), local position measurement (LPM) technology (Inmotio) and two global positioning systems (GPSports and VX). Data were analysed with respect to three different field dimensions (small, <30 m 2 to full-pitch, match). Variables provided by the systems were compared, and calibration equations (linear regression models) between each system were calculated for each field dimension. Most metrics differed between the 4 systems with the magnitude of the differences dependant on both pitch size and the variable of interest. Trivial-to-small between-system differences in total distance were noted. However, high-intensity running distance (>14.4 km · h -1 ) was slightly-to-moderately greater when tracked with Prozone, and accelerations, small-to-very largely greater with LPM. For most of the equations, the typical error of the estimate was of a moderate magnitude. Interchangeability of the different tracking systems is possible with the provided equations, but care is required given their moderate typical error of the estimate. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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