title: Effects of 5 weeks of high-intensity interval training vs. volume training in 14-year-old soccer players.
abstract: High-intensity interval training (HIIT) in junior and adult soccer has been shown to improve oxygen uptake (VO₂) and enhance soccer performance. The main purpose of this study was to examine the short term effects of a 5-week HIIT vs. high-volume training (HVT) program in 14-year-old soccer players regarding the effects on VO₂max and 1,000-m time (T₁₀₀₀) and on sprinting and jumping performance. In a 5-week period, 19 male soccer players with a mean (SD) age of 13.5 ± 0.4 years performed HIIT at close to ~90% of maximal heart rate. The HVT intensity was set at 60-75% of maximal heart rate. VO₂max increased significantly (7.0%) from pre to post in HIIT but not after HVT. T₁₀₀₀ decreased significantly after HIIT (~-10 vs. ~-5 seconds in HVT). Sprint performance increased significantly in both groups from pre to posttesting without any changes in jumping performance.
authors.affiliation: Institute of Training Science and Sport Informatics, German Sport University Cologne, Germany. sperlich@dshs-koeln.de
authors.forename: Billy
authors.initials: B
authors.lastname: Sperlich
authors.forename: Markus
authors.initials: M
authors.lastname: De Marées
authors.forename: Karsten
authors.initials: K
authors.lastname: Koehler
authors.forename: John
authors.initials: J
authors.lastname: Linville
authors.forename: Hans-Christer
authors.initials: HC
authors.lastname: Holmberg
authors.forename: Joachim
authors.initials: J
authors.lastname: Mester
mesh_terms: D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D054874:Athletic Performance / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D010101:Oxygen Consumption / Q000502:physiology*; D010806:Physical Education and Training / Q000379:methods*; D010807:Physical Endurance / Q000502:physiology*; D012916:Soccer / Q000502:physiology*; D013997:Time Factors