title: Relationship Between Repeated Sprint Performance and both Aerobic and Anaerobic Fitness.
abstract: The aims of this study were firstly, to examine the relationship between repeated sprint performance indices and anaerobic speed reserve (AnSR), aerobic fitness and anaerobic power and secondly, to identify the best predictors of sprinting ability among these parameters. Twenty nine subjects (age: 22.5 ± 1.6 years, body height: 1.8 ± 0.1 m, body mass: 68.8 ± 8.5 kg, body mass index (BMI): 22.2 ± 2.1 kg•m-2, fat mass: 11.3 ± 2.9 %) participated in this study. All participants performed a 30 m sprint test (T30) from which we calculated the maximal anaerobic speed (MAnS), vertical and horizontal jumps, 20m multi-stage shuttle run test (MSRT) and repeated sprint test (10 × 15 m shuttle run). AnSR was calculated as the difference between MAnS and the maximal speed reached in the MSRT. Blood lactate sampling was performed 3 min after the RSA protocol. There was no significant correlation between repeated sprint indices (total time (TT); peak time (PT), fatigue index (FI)) and both estimated VO2max and vertical jump performance). TT and PT were significantly correlated with T30 (r=0.63, p=0.001 and r=0.62, p=0.001; respectively), horizontal jump performance (r = -0.47, p = 0.001 and r = -0.49, p = 0.006; respectively) and AnSR (r=-0.68, p= 0.001 and r=-0.70, p=0.001, respectively). Significant correlations were found between blood lactate concentration and TT, PT, and AnSR (r=-0.44, p=0.017; r=-0.43, p=0.018 and r=0.44, p=0.016; respectively). Stepwise multiple regression analyses demonstrated that AnSR was the only significant predictor of the TT and PT, explaining 47% and 50% of the shared variance, respectively. Our findings are of particular interest for coaches and fitness trainers in order to predict repeated sprint performance by using AnSR that can easily identify the respective upper performance limits supported by aerobic and anaerobic power of a player involved in multi-sprint team sports.
authors.affiliation: Department of physical Education, University of Hail-College of Education, Hail, Kingdom of Saudi Arabia. ; Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
authors.forename: Wajdi
authors.initials: W
authors.lastname: Dardouri
authors.affiliation: Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
authors.forename: Mohamed Amin
authors.initials: MA
authors.lastname: Selmi
authors.affiliation: King Abdulaziz University - Faculty of Education in Jeddah. Physical Education Department, Kingdom of Saudi Arabia. ; Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
authors.forename: Radhouane Haj
authors.initials: RH
authors.lastname: Sassi
authors.affiliation: Tunisian Research Laboratory "Sport Performance Optimisation", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia. ; Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
authors.forename: Zied
authors.initials: Z
authors.lastname: Gharbi
authors.affiliation: King Abdulaziz University - Faculty of Education in Jeddah. Physical Education Department, Kingdom of Saudi Arabia. ; Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Rebhi
authors.affiliation: Research Unit, « Analysis and Evaluation of Factors Affecting the Sports Performance », High Institute of Sports and Physical Education, Ksar Said, University of Manouba, Tunisia.
authors.forename: Mohamed Haj
authors.initials: MH
authors.lastname: Yahmed
authors.affiliation: Research Unit: EM2S, High Institute of Sports and Physical Education, Sfax, University of Sfax, Tunisia.
authors.forename: Wassim
authors.initials: W
authors.lastname: Moalla
keywords: aerobic fitness; anaerobic power; horizontal jump; repeated sprint ability; vertical jump