title: Effects of a 12-day maximal shuttle-run shock microcycle in hypoxia on soccer specific performance and oxidative stress.
abstract: The purpose of this study was to investigate the effect of a maximal shuttle-run shock microcycle in hypoxia on repeated sprint ability (RSA, 6 × 40-m (6 × 20 m back and forth, 20" rest in between)), Yo-Yo-intermittent-recovery (YYIR) test performance, and redox-status. Fourteen soccer players (age: 23.9 ± 2.1 years), randomly assigned to hypoxia (∼ 3300 m) or normoxia training, performed 8 maximal shuttle-run training sessions within 12 days. YYIR test performance and RSA fatigue-slope improved independently of the hypoxia stimulus (p < 0.05). Training reduced the oxidative stress level (-7.9%, p < 0.05), and the reduction was associated with performance improvements (r = 0.761, ΔRSA; r = -0.575, ΔYYIR, p < 0.05).
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.|b FIFA Medical Centre of Excellence, Austria.
authors.forename: Hannes
authors.initials: H
authors.lastname: Gatterer
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.|c Department of Physical Therapy, Faculty of Allied Health Science, Burapha University, Thailand.
authors.forename: Kultida
authors.initials: K
authors.lastname: Klarod
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.
authors.forename: Dieter
authors.initials: D
authors.lastname: Heinrich
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.
authors.forename: Philipp
authors.initials: P
authors.lastname: Schlemmer
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.
authors.forename: Stefan
authors.initials: S
authors.lastname: Dilitz
authors.affiliation: a Department of Sport Science, University Innsbruck, Fürstenweg 185, A-6020 Innsbruck, Austria.|b FIFA Medical Centre of Excellence, Austria.
authors.forename: Martin
authors.initials: M
authors.lastname: Burtscher
mesh_terms: D000328:Adult; D054874:Athletic Performance / Q000706:statistics & numerical data*; D004311:Double-Blind Method; D005080:Exercise Test / Q000706:statistics & numerical data*; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D008297:Male; D018384:Oxidative Stress / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology; D010807:Physical Endurance / Q000502:physiology; D012420:Running / Q000502:physiology* / Q000706:statistics & numerical data; D012916:Soccer; D055815:Young Adult
keywords: Yo-Yo intermittent recovery test; block periodization; capacité de répéter des sprints; entraînement d’intensité élevée; football; high-intensity training; hypoxia; hypoxie; périodisation par bloc; repeated sprint ability; test de récupération intermittente Yo-Yo