Movement Patterns and Metabolic Responses During an International Rugby Sevens Tournament - Insep - Institut national du sport, de l'expertise et de la performance Accéder directement au contenu
Article Dans Une Revue International Journal of Sports Physiology and Performance Année : 2017

Movement Patterns and Metabolic Responses During an International Rugby Sevens Tournament

Résumé

Purpose: To investigate the running demands and associated metabolic perturbations during an official rugby sevens tournament. Methods: Twelve elite players participated in 7 matches wearing GPS units. Maximal sprinting speed (MSS) and maximal aerobic speed (MAS) were measured. High-intensity threshold was individualized relative to MAS (>100% of MAS), and veryhigh-intensity distance was reported relative to both MAS and MSS. Blood samples were taken at rest and after each match. Results: Comparison of prematch and postmatch samples revealed significant (P < .01) changes in pH (7.41–7.25), bicarbonate concentration ([HCO3–]) (24.8–13.6 mmol/L), and lactate concentration ([La]) (2.4–11.9 mmol/L). Mean relative total distance covered was 91 ± 13 m/min with ~17 m/min at high-intensity. Player status (whole-match or interchanged players), match time, and total distance covered had no significant impact on metabolic indices. Relative distance covered at high intensity was negatively correlated with pH and [HCO3–] (r = .44 and r = .42, respectively; P < .01) and positively correlated with [La] (r = .36; P < .01). Total distance covered and distance covered at very high intensity during the 1-min peak activity in the last 3 min of play were correlated with [La] (r = .39 and r = .39, respectively; P < .01). Conclusions: Significant alterations in blood-metabolite indices from prematch to postmatch sampling suggest that players were required to tolerate a substantial level of acidosis related to metabolite accumulation. In addition, the ability to produce energy via the glycolytic energy pathway seems to be a major determinant in match-related running performance.
Fichier non déposé

Dates et versions

hal-02558289 , version 1 (29-04-2020)

Identifiants

Citer

Anthony Couderc, Claire Thomas, Mathieu Lacome, Julien Piscione, Julien Robineau, et al.. Movement Patterns and Metabolic Responses During an International Rugby Sevens Tournament. International Journal of Sports Physiology and Performance, 2017, 12 (7), pp.901-907. ⟨10.1123/ijspp.2016-0313⟩. ⟨hal-02558289⟩

Collections

INSEP
48 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More