Titre :

Effect of Waters Enriched in O2 by Injection or Electrolysis on Performance and the Cardiopulmonary and Acid-Base Response to High Intensity Exercise.

Auteur(s) :

Daussin, Frédéric [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Péronnet, François [Auteur]
École de kinésiologie et des sciences de l'activité physique [Université de Montréal] [EKSAP [UdeM]]
Charton, Antoine [Auteur]
Université de Strasbourg [UNISTRA]
Lonsdorfer, Evelyne [Auteur]
Université de Strasbourg [UNISTRA]
Doutreleau, Stéphane [Auteur]

Geny, Bernard [Auteur]
Université de Strasbourg [UNISTRA]
Richard, Ruddy [Auteur]
CHU Gabriel Montpied [Clermont-Ferrand]

Titre de la revue :

Nutrients

Nom court de la revue :

Nutrients

Numéro :

13

Date de publication :

2021-11-29

ISSN :

2072-6643

Mot(s)-clé(s) en anglais :

VO2 kinetics
endurance exercise
performance
reactive oxygen species

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

Several brands of water enriched with O (O-waters) are commercially available and are advertised as wellness and fitness waters with claims of physiological and psychological benefits, including improvement in exercise ...
Lire la suite >Several brands of water enriched with O (O-waters) are commercially available and are advertised as wellness and fitness waters with claims of physiological and psychological benefits, including improvement in exercise performance. However, these claims are based, at best, on anecdotal evidence or on a limited number of unreliable studies. The purpose of this double-blind randomized study was to compare the effect of two O-waters (~110 mg O·L) and a placebo (10 mg O·L, i.e., close to the value at sea level, 9-12 mg O·L) on the cardiopulmonary responses and on performance during high-intensity exercise. One of the two O-waters and the placebo were prepared by injection of O. The other O-water was enriched by an electrolytic process. Twenty male subjects were randomly allocated to drink one of the three waters in a crossover study (2 L·day × 2 days and 15 mL·kg 90 min before exercise). During each exercise trial, the subjects exercised at 95.9 ± 4.7% of maximal workload to volitional fatigue. Exercise time to exhaustion and the cardiopulmonary responses, arterial lactate concentration and pH were measured. Oxidative damage to proteins, lipids and DNA in blood was assessed at rest before exercise. Time to exhaustion (one-way ANOVA) and the responses to exercise (two-way ANOVA [Time; Waters] with repeated measurements) were not significantly different among the three waters. There was only a trend ( = 0.060) for a reduction in the time constant of the rapid component of VO kinetics with the water enriched in O by electrolysis. No difference in oxidative damage in blood was observed between the three waters. These results suggest that O-water does not speed up cardiopulmonary response to exercise, does not increase performance and does not trigger oxidative stress measured at rest.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
Univ. Artois
Univ. Littoral Côte d’Opale

Collections :

• Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369

Équipe(s) de recherche :

Activité Physique, Muscle, Santé (APMS)

Date de dépôt :

2022-01-07T21:22:22Z
2022-01-12T09:43:42Z