title: Recovery after an intermittent test.
abstract: The purpose of this study was to analyse the impact of an intermittent test reproducing the soccer running activity profile on physical performance, subjective ratings and biochemical parameters throughout 72 h recovery. 8 professional soccer players performed the intermittent test on a non-motorised treadmill and data was collected before, immediately after, 24, 48 and 72 h after the test. Squat jump (SJ), countermovement jump (CMJ), peak isometric force (IFpeak), 6-s sprint, repeated sprints test (RS), perceptual ratings (fatigue, muscle soreness, stress), creatine kinase ([CK]) and uric acid ([UA]) were analyzed. After the test, a mean reduction in countermovement jump performance of -8.2% (CI: -12.9 to -3.4, p<0.01) was observed, while perceived fatigue (+2.1±1.7 a.u.; p<0.05), perceived muscle soreness (+1.8±1.5 a.u.; p<0.05), perceived stress (+1.6±1.5 a.u.; p<0.05), creatine kinase (+171±77 IU x l(-1); p<0.01) and uric acid (+168±89 Umol x l(-1); p<0.01) concentrations were significantly increased relative to baseline. No significant effect was found for SJ, IFpeak, 6-s sprint, RS immediately after and throughout the 72 h following the test. In conclusion, soccer running performance does not appear to be the main cause of post soccer match-induced fatigue. Physical data provided by video match analysis systems is insufficient to accurately estimate the level of match fatigue.
authors.affiliation: UDSL, Univ Lille Nord de France, EA 4488, Lille, France.
authors.forename: M
authors.initials: M
authors.lastname: Nedelec
authors.forename: U
authors.initials: U
authors.lastname: Wisloff
authors.forename: A
authors.initials: A
authors.lastname: McCall
authors.forename: S
authors.initials: S
authors.lastname: Berthoin
authors.forename: G
authors.initials: G
authors.lastname: Dupont
mesh_terms: D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D003402:Creatine Kinase / Q000502:physiology; D005080:Exercise Test / Q000379:methods*; D005221:Fatigue / Q000378:metabolism; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology; D012420:Running / Q000502:physiology*; D012916:Soccer / Q000502:physiology*; D013997:Time Factors; D014527:Uric Acid / Q000378:metabolism; D055815:Young Adult
chemical_list: D014527:Uric Acid; D003402:Creatine Kinase