Biology of Sport
eISSN: 2083-1862
ISSN: 0860-021X
Biology of Sport
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1/2023
vol. 40
 
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abstract:
Original paper

Substitute running outputs in elite youth male soccer players: less peak but greater relative running outputs

Michael G. Sydney
1, 2
,
Nick Ball
1, 3
,
Jocelyn K. Mara
1, 3
,
Dale Chapman
1, 4
,
Martin Wollin
5, 6

1.
University of Canberra Research Institute for Sport and Exercise (UCRISE), Canberra, Australia
2.
School of Science, Faculty of Science & Technology, University of Canberra, Australia
3.
Discipline of Sport and Exercise Science, Faculty of Health, University of Canberra, Australia
4.
School of Allied Health, Curtin University, Perth, Australia
5.
Performance Health Management, Canberra, Australia
6.
School of Health Sciences, La Trobe University, Melbourne, Australia
Biol Sport. 2023;40(1):241–248
Online publish date: 2022/03/16
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Coaches consider substitute players to be a substantial factor in influencing the outcome of a soccer match. Substitute players are expected to make physical impact on the match by superseding the running output of the player they replaced and are a key tool for managing in-game fatigue and influencing the outcome of a game. This study investigated the physical impact and internal response of substitute players, compared to starting and full-match players. We also sought to determine if differences between substitution statuses were influenced by playing position. Players wore 15-Hz global positioning system tracking devices across 29 competition matches and were categorised according to their substitution status (full-match, starters, substitutes) and playing position (external defender, midfield, external attacker and central attacker). Peak total (TD) and high-speed running (> 5.0 m/s) distance (HSRD) were calculated using 1-, 2- and 5-minute rolling epochs. Relative running demands were reported as TD and HSRD per minute of total playing time. Substitute players performed less peak TD and HSRD in 1-, 2- and 5-minute epochs, and reported lower RPE compared to starting and full-match players. In contrast, substitutes performed greater relative HSRD per minute than starting and full-match players (p < 0.001, |d| range = 0.35–1.34). In conclusion, substitute players may have a relative physical impact but do not replicate or supersede the peak demands of full-match players. Coaches and practitioners should implement targeted warm-up interventions to enhance substitute readiness to meet the peak running demands in order to have a more effective physical impact.
keywords:

Association Football, High-Speed Running, GPS, Team Sports, Player Monitoring, Physical Performance

 
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