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Changes in lactate kinetics underpin soccer performance adaptations to cycling-based sprint interval training

Thom, Graham; Kavaliauskas, Mykolas; Babraj, John

Authors

Graham Thom

Mykolas Kavaliauskas

John Babraj



Abstract

In adolescent soccer, 23% of the distance covers happens at speeds above onset of blood lactate accumulation which suggests that lactate kinetics may be important for soccer performance. We sought to determine the effectiveness of sprint interval training (SIT) on changing performance and lactate kinetics in adolescent soccer players. Thirteen elite soccer academy players (age 15 ± 0.5y) underwent baseline testing (0–10 m and 10–20 m sprint performance, Wingate anaerobic Test (WaNT) with blood lactate measurements and incremental VO2 peak test) before being allocated to control or SIT group. The control group maintained training whilst the HIT group carried out twice-weekly all-out effort cycle sprints consisting of 6 × 10 s sprint with 80 s recovery. There were significant time x group interactions for 10–20 m sprint time (Control pre: 1.32 ± 0.07 s post: 1.35 ± 0.08 s; SIT pre: 1.29 ± 0.04 s post: 1.25 ± 0.04 s; p = 0.01), Peak Power (Control pre: 13.1 ± 1.3 W.kg⁻¹ post: 13.2 ± 1.47 W.kg⁻¹; SIT pre: 12.4 ± 1.3 W.kg⁻¹ post: 15.3 ± 0.7 W.kg⁻¹; p = 0.01) and time to exhaustion (Control pre: 596 ± 62 s post: 562 ± 85 s; SIT pre: 655 ± 54 s post: 688 ± 55 s; p = 0.001). The changes in performance were significantly correlated to changes in lactate kinetics (power: r = 0.55; 10–20 m speed: r = −0.54; time to exhaustion: r = 0.55). Therefore, cycle based SIT is an effective training paradigm for elite adolescent soccer players and the improvements in performance are associated with changes in lactate kinetics.

Journal Article Type Article
Acceptance Date Jun 24, 2019
Online Publication Date Jul 16, 2019
Publication Date 2019
Deposit Date Jul 22, 2019
Publicly Available Date Jul 17, 2020
Journal European Journal of Sport Science
Print ISSN 1746-1391
Electronic ISSN 1536-7290
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 20
Issue 4
Pages 486-494
DOI https://doi.org/10.1080/17461391.2019.1635650
Keywords Metabolism, team sport, youth, physiology
Public URL http://researchrepository.napier.ac.uk/Output/1980077
Contract Date Jul 22, 2019

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