title: Effect of preseason concurrent muscular strength and high-intensity interval training in professional soccer players.
abstract: This study examined the effect of concurrent muscular strength and high-intensity running interval training on professional soccer players' explosive performances and aerobic endurance. Thirty-nine players participated in the study, where both the experimental group (EG, n = 20) and control group (CG, n = 19) participated in 8 weeks of regular soccer training, with the EG receiving additional muscular strength and high-intensity interval training twice per week throughout. Muscular strength training consisted of 4 sets of 6RM (repetition maximum) of high-pull, jump squat, bench press, back half squat, and chin-up exercises. The high-intensity interval training consisted of 16 intervals each of 15-second sprints at 120% of individual maximal aerobic speed interspersed with 15 seconds of rest. EG significantly increased (p < or = 0.05) 1RM back half squat and bench press but showed no changes in body mass. Within-subject improvement was significantly higher (p < or = 0.01) in the EG compared with the CG for vertical jump height, 10-m and 30-m sprint times, distances covered in the Yo-Yo Intermittent Recovery Test and maximal aerobic speed test, and maximal aerobic speed. High-intensity interval running can be concurrently performed with high load muscular strength training to enhance soccer players' explosive performances and aerobic endurance.
authors.affiliation: Department of Physical Education, Hong Kong Baptist University, Hong Kong.
authors.forename: Pui-lam
authors.initials: PL
authors.lastname: Wong
authors.forename: Anis
authors.initials: A
authors.lastname: Chaouachi
authors.forename: Karim
authors.initials: K
authors.lastname: Chamari
authors.forename: Alexandre
authors.initials: A
authors.lastname: Dellal
authors.forename: Ulrik
authors.initials: U
authors.lastname: Wisloff
mesh_terms: D054874:Athletic Performance / Q000502:physiology; D006801:Humans; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology; D053580:Muscle Strength / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology*; D055070:Resistance Training; D012420:Running / Q000502:physiology; D012916:Soccer / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult