Titre :

Physiological and perceived exertion responses at intermittent critical power and intermittent maximal lactate steady state.

Auteur(s) :

Okuno, Nilo M [Auteur]

Perandini, Luiz A B [Auteur]

Bishop, David [Auteur]
The University of Western Australia [UWA]
Simões, Herbert G [Auteur]
University of Brasilia [Brazil] [UnB]
Pereira, Gleber [Auteur]
University of Brasilia [Brazil] [UnB]
Berthoin, Serge [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Kokubun, Eduardo [Auteur]

Nakamura, Fábio Y [Auteur]

Titre de la revue :

Journal of Strength and Conditioning Research

Nom court de la revue :

J Strength Cond Res

Numéro :

25

Pagination :

2053-8

Date de publication :

2011-07-01

ISSN :

1533-4287

Mot(s)-clé(s) en anglais :

Adult
Exercise Test
Heart Rate
Humans
Lactic Acid
Male
Muscle Fatigue
Muscle, Skeletal
Oxygen Consumption
Perception
Physical Exertion
Time Factors
Young Adult

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

The aim of this study was to compare the power outputs of the intermittent critical power (CPi) with the intermittent maximal lactate steady state (MLSSi) and to compare the physiological and perceptual responses exercising ...
Lire la suite >The aim of this study was to compare the power outputs of the intermittent critical power (CPi) with the intermittent maximal lactate steady state (MLSSi) and to compare the physiological and perceptual responses exercising at CPi and MLSSi. Ten subjects performed intermittent trials on a cycle ergometer to determine CPi and MLSSi using 30:30 seconds of effort and pause. The oxygen uptake (&OV0312;o2), heart rate (HR), blood lactate concentration ([Lac]), and rating of perceived exertion (RPE) responses were compared during 30-minute cycling at CPi and MLSSi. The CPi (267 ± 45 W) was similar to MLSSi (254 ± 39 W), and they were correlated (r = 0.88; p < 0.05). The &OV0312;o2 and HR responses stabilized throughout exercising at CPi (2.52 ± 0.52 L·min; 156 ± 8 b·min) and MLSSi (2.41 ± 0.32 L·min; 152 ± 10 b·min). These physiological variables were similar between conditions. However, the [Lac] and RPE were higher from the middle to the end of exercise duration at CPi ([Lac] = 6.9 ± 2.6 mM; RPE = 17.1 ± 2.1 a.u.) compared to MLSSi ([Lac] = 5.1 ± 0.9 mM; RPE = 15.7 ± 1.8 a.u.). Therefore, CPi intensity determined from 30:30 seconds of effort and rest periods on a cycle ergometer is equivalent to the MLSSi, and there is a physiological steady state throughout both exercise intensities, although the [Lac] and RPE responses at CPi are higher than at MLSSi. Thus, the CPi and MLSSi may be used as tools for intermittent training evaluation and prescription.Lire moins >

Comité de lecture :

Oui

Audience :

Non spécifiée

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 :

2021-11-14T10:22:24Z
2021-11-18T10:09:01Z