Kinetic Sprint Asymmetries on a non-motorised Treadmill in Rugby Union Athletes

Détails

ID Serval
serval:BIB_33395E0D02A5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Kinetic Sprint Asymmetries on a non-motorised Treadmill in Rugby Union Athletes
Périodique
International journal of sports medicine
Auteur(s)
Brown S.R., Cross M.R., Girard O., Brocherie F., Samozino P., Morin J.B.
ISSN
1439-3964 (Online)
ISSN-L
0172-4622
Statut éditorial
Publié
Date de publication
11/2017
Peer-reviewed
Oui
Volume
38
Numéro
13
Pages
1017-1022
Langue
anglais
Résumé
The purpose of this study was to present a potential link between sprint kinetic (vertical [F <sub>V</sub> ] and horizontal force [F <sub>H</sub> ]) asymmetries and athletic performance during acceleration and maximal velocity (v <sub>max</sub> ) sprinting. Thirty un-injured male rugby athletes performed 8-s sprints on a non-motorised treadmill. Kinetic data were divided into 'strong' and 'weak' legs based on individually averaged peak values observed during sprinting and were analysed to evaluate asymmetry. Large differences were found between the strong and weak legs in F <sub>H</sub> during acceleration (4.3 vs. 3.5 N·kg <sup>-1</sup> ) and v <sub>max</sub> (3.7 vs. 2.8 N·kg <sup>-1</sup> ) sprinting (both ES=1.2), but not in F <sub>V</sub> (21.8 vs. 20.8 N·kg <sup>-1</sup> , ES=- 0.6 for acceleration; 23.9 vs. 22.8 N·kg <sup>-1</sup> , ES=- 0.5 for v <sub>max</sub> , respectively). Group mean asymmetry was lower in F <sub>V</sub> compared to F <sub>H</sub> during acceleration (1.6 vs. 6.8%) and v <sub>max</sub> (1.6 vs. 8.2%). The range of asymmetry was much lower in F <sub>V</sub> (0.03-4.3%) compared to F <sub>H</sub> (0.2-28%). In un-injured rugby athletes, the magnitude and range of asymmetry scores in F <sub>H</sub> , occurring during acceleration and v <sub>max</sub> phases, where much greater than those found in F <sub>V</sub> . These findings highlight the potential for some un-injured athletes to possess kinetic asymmetries known as crucial components for acceleration performance in sprinting.
Mots-clé
Acceleration, Athletic Performance/physiology, Cross-Sectional Studies, Exercise Test/methods, Football/physiology, Humans, Kinetics, Leg/physiology, Running/physiology
Pubmed
Web of science
Création de la notice
22/03/2018 20:41
Dernière modification de la notice
20/08/2019 13:19
Données d'usage