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Int J Sports Med. 2015 Jan;36(1):41-8. doi: 10.1055/s-0034-1384547. Epub 2014 Sep 26.

Individualisation of time-motion analysis: a method comparison and case report series.

Author information

1
Medical and Sports Science Department, Southampton Football Club, Southampton, United Kingdom.
2
Department of Sport, Health and Exercise Science, The University of Hull, Kingston upon Hull, United Kingdom.
3
School of Science and Health, The University of Western Sydney, Penrith, Australia.

Abstract

This study compared the intensity distribution of time-motion analysis data, when speed zones were categorized by different methods. 12 U18 players undertook a routine battery of laboratory- and field-based assessments to determine their running speed corresponding to the respiratory compensation threshold (RCT), maximal aerobic speed (MAS), maximal oxygen consumption (vV˙O2max) and maximal sprint speed (MSS). Players match-demands were tracked using 5 Hz GPS units in 22 fixtures (50 eligible match observations). The percentage of total distance covered running at high-speed (%HSR), very-high speed (%VHSR) and sprinting were determined using the following speed thresholds: (1) arbitrary; (2) individualised (IND) using RCT, vV˙O2max and MSS; (3) individualised via MAS per se; (4) individualised via MSS per se; and (5) individualised using MAS and MSS as measures of locomotor capacities (LOCO). Using MSS in isolation resulted in 61% and 39% of player's % HSR and % VHSR, respectively, being incorrectly interpreted, when compared to the IND technique. Estimating the RCT from fractional values of MAS resulted in erroneous interpretations of % HSR in 50% of cases. The present results suggest that practitioners and researchers should avoid using singular fitness characteristics to individualise the intensity distribution of time-motion analysis data. A combination of players' anaerobic threshold, MAS, and MSS characteristics are recommended to individualise player-tracking data.

PMID:
25259591
DOI:
10.1055/s-0034-1384547
[Indexed for MEDLINE]

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