Dietary Nitrate Supplementation Does Not ...
Type de document :
Communication dans un congrès avec actes
DOI :
URL permanente :
Titre :
Dietary Nitrate Supplementation Does Not Improve Tolerance to Supramaximal Intensity Intermittent Exercise in Elite Endurance Athletes
Auteur(s) :
Pawlak Chaouch, Mehdi [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Boissiere, Julien [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Munyaneza, Désiré [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Gamelin, Francois-Xavier [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Cuvelier, Grégory [Auteur]
Berthoin, Serge [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Aucouturier, Julien [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - EA 7369
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Boissiere, Julien [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Munyaneza, Désiré [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Gamelin, Francois-Xavier [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Cuvelier, Grégory [Auteur]
Berthoin, Serge [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Aucouturier, Julien [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - EA 7369
Titre de la manifestation scientifique :
2e Congrès annuel national de physiologie et biologie intégrative
Organisateur(s) de la manifestation scientifique :
SPBI
Ville :
Lille, France
Pays :
France
Date de début de la manifestation scientifique :
2018-06-27
Titre de la revue :
ACTA PHYSIOLOGICA
Nom court de la revue :
Acta Physiol
Éditeur :
Wiley
Date de publication :
2018-10-27
ISSN :
1748-1708
Discipline(s) HAL :
Sciences du Vivant [q-bio]
Résumé en anglais : [en]
Introduction: Although 15% of the total race duration in cycling or triathlon can be performed at intensities beyond VO2max, little is known about the effectiveness of dietary NO3- supplementation on tolerance to supramaximal ...
Lire la suite >Introduction: Although 15% of the total race duration in cycling or triathlon can be performed at intensities beyond VO2max, little is known about the effectiveness of dietary NO3- supplementation on tolerance to supramaximal intensity intermittent exercise in endurance athletes. Our aim was therefore to determine whether dietary NO3- supplementation enhances the tolerance to supramaximal intensity intermittent exercise in elite endurance-trained athletes. Methods: Using a randomized, single-blind, cross-over design, 9 elite endurance athletes (21.7 ± 3.7 years, maximal oxygen uptake (VO2max): 71.1 ± 5.2 mL.kg−1 min−1) performed a supramaximal intensity intermittent exercise test following either a 3-day beetroot juice supplementation (BJ, NO3- content of 680 mg L−1), or a placebo supplementation (PL, NO3- content <5 mg L−1). The exercise test consisted of 15-s cycling exercise bouts at 170% of the maximal aerobic power interspersed with 30-s passive recovery periods performed until volitional exhaustion. Gas exchange measurements (indirect calorimetry), changes in local muscle oxygenation, and microvascular THb concentration were measured by Near Infrared Spectroscopy (NIRS). Results: Dietary NO3- supplementation did not increase the tolerance to supramaximal intensity intermittent exercise (BJ: 13.9 ± 4.0 reps, PL: 14.2 ± 4.5, NS). Dietary NO3- supplementation did not affect oxygen uptake (VO2) during supramaximal intensity intermittent exercise tests (BJ: 3378.5 ± 681.8 mL min−1, PL: 3466.1 ± 505.3 mL min−1, NS). The area under the curve for microvascular total hemoglobin (AUC-THb) was not different between the two conditions (BJ: 6816.9 ± 1463.1 arbitrary units (a.u.), PL: 6771.5 ± 3004.5 a.u., NS). Discussion/conclusion: A short-term dietary NO3- supplementation did not increase the tolerance to supramaximal intensity intermittent exercise in elite endurance athletes high VO2max (>60 mL kg−1 min−1).Lire moins >
Lire la suite >Introduction: Although 15% of the total race duration in cycling or triathlon can be performed at intensities beyond VO2max, little is known about the effectiveness of dietary NO3- supplementation on tolerance to supramaximal intensity intermittent exercise in endurance athletes. Our aim was therefore to determine whether dietary NO3- supplementation enhances the tolerance to supramaximal intensity intermittent exercise in elite endurance-trained athletes. Methods: Using a randomized, single-blind, cross-over design, 9 elite endurance athletes (21.7 ± 3.7 years, maximal oxygen uptake (VO2max): 71.1 ± 5.2 mL.kg−1 min−1) performed a supramaximal intensity intermittent exercise test following either a 3-day beetroot juice supplementation (BJ, NO3- content of 680 mg L−1), or a placebo supplementation (PL, NO3- content <5 mg L−1). The exercise test consisted of 15-s cycling exercise bouts at 170% of the maximal aerobic power interspersed with 30-s passive recovery periods performed until volitional exhaustion. Gas exchange measurements (indirect calorimetry), changes in local muscle oxygenation, and microvascular THb concentration were measured by Near Infrared Spectroscopy (NIRS). Results: Dietary NO3- supplementation did not increase the tolerance to supramaximal intensity intermittent exercise (BJ: 13.9 ± 4.0 reps, PL: 14.2 ± 4.5, NS). Dietary NO3- supplementation did not affect oxygen uptake (VO2) during supramaximal intensity intermittent exercise tests (BJ: 3378.5 ± 681.8 mL min−1, PL: 3466.1 ± 505.3 mL min−1, NS). The area under the curve for microvascular total hemoglobin (AUC-THb) was not different between the two conditions (BJ: 6816.9 ± 1463.1 arbitrary units (a.u.), PL: 6771.5 ± 3004.5 a.u., NS). Discussion/conclusion: A short-term dietary NO3- supplementation did not increase the tolerance to supramaximal intensity intermittent exercise in elite endurance athletes high VO2max (>60 mL kg−1 min−1).Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
Univ. Littoral Côte d’Opale
Univ. Artois
Univ. Littoral Côte d’Opale
Univ. Artois
Équipe(s) de recherche :
Activité Physique, Muscle, Santé (APMS)
Activité Physique, Muscle, Santé (APMS)
Activité Physique, Muscle, Santé (APMS)
Date de dépôt :
2023-03-12T06:45:25Z
2023-03-29T10:51:41Z
2023-03-29T10:51:41Z