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Sports 2018, 6(2), 39; https://doi.org/10.3390/sports6020039

Directional Change Mediates the Physiological Response to High-Intensity Shuttle Running in Professional Soccer Players

1
School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK
2
Liverpool Football Club, Melwood training ground, Liverpool L12 8SY, UK
3
Department of Physical Education and Sport Sciences, University of Limerick, Limerick V94 T9PX Ireland
4
Sport Science Department, Aspire Academy, P.O. Box 23833 Doha, Qatar
5
Arsenal Football Club, Arsenal training centre, London Colney AL2 1DR, UK
6
Everton Football Club, USM Finch Farm training ground, Liverpool L26 3UE, UK
*
Author to whom correspondence should be addressed.
Received: 31 March 2018 / Revised: 17 April 2018 / Accepted: 20 April 2018 / Published: 24 April 2018
(This article belongs to the Special Issue Fatigue and Recovery in Football)
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Abstract

The purpose of this study was to investigate the influence that different frequencies of deceleration and acceleration actions had on the physiological demands in professional soccer players. Thirteen players were monitored via microelectromechanical devices during shuttle running protocols which involved one, three, or seven 180 degree directional changes. Heart rate exertion (HRE) (1.1 ± 0.7) and rating of perceived exertion (RPE) (5 ± 1) were significantly higher for the protocol which included seven directional changes when compared to the protocols which included one (HRE 0.5 ± 0.3, ES = 1.1, RPE 3 ± 0, ES = 2.7) or three (HRE 0.5 ± 0.2, ES = 1.1, RPE 3 ± 1, ES = 1.9) directional changes (p < 0.05). The gravitational force (g-force) as measured through accelerometry (ACC) also showed a similar trend when comparing the seven (8628.2 ± 1630.4 g) to the one (5888.6 ± 1159.1 g, ES = 1.9) or three (6526.9 ± 1257.6 g, ES = 1.4) directional change protocols (p < 0.05). The results of this study suggest that increasing the frequency of decelerations and accelerations at a high intensity running (HIR) speed alters the movement demands and elevates the physiological responses in professional players. This data has implications for the monitoring of physical performance and implementation of training drills. View Full-Text
Keywords: change of direction; deceleration; acceleration; accelerometry; fatigue change of direction; deceleration; acceleration; accelerometry; fatigue
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Tang, R.; Murtagh, C.; Warrington, G.; Cable, T.; Morgan, O.; O’Boyle, A.; Burgess, D.; Morgans, R.; Drust, B. Directional Change Mediates the Physiological Response to High-Intensity Shuttle Running in Professional Soccer Players. Sports 2018, 6, 39.

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