Title :

Respiratory muscle deoxygenation and ventilatory threshold assessments using near infrared spectroscopy in children.

Author(s) :

Moalla, W [Auteur]
Faculté des Sciences du Sport, UFR STAPS
Université de Picardie Jules Verne [UPJV]
Dupont, Gregory [Auteur]
Faculté des Sciences du Sport, UFR STAPS
Université de Lille
Berthoin, Serge [Auteur]
Faculté des Sciences du Sport, UFR STAPS
Université de Lille
Ahmaidi, S [Auteur]
Faculté des Sciences du Sport, UFR STAPS
Université de Picardie Jules Verne [UPJV]

Journal title :

International Journal of Sports Medicine

Abbreviated title :

Int J Sports Med

Volume number :

26

Pages :

576-582

Publication date :

2005-09-01

ISSN :

0172-4622

English keyword(s) :

Anaerobic Threshold
Body Size
Child
Exercise
Humans
Linear Models
Lung
Male
Oxygen
Reproducibility of Results
Respiratory Muscles
Spectroscopy, Near-Infrared

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

The aim of this study was to assess respiratory muscles deoxygenation and to determine ventilatory threshold using near infrared spectroscopy (NIRS) in children during incremental cardiopulmonary exercise. Fourteen healthy ...
Show more >The aim of this study was to assess respiratory muscles deoxygenation and to determine ventilatory threshold using near infrared spectroscopy (NIRS) in children during incremental cardiopulmonary exercise. Fourteen healthy children with a mean +/- SD age of 12.8 +/- 1.4 yrs performed an incremental exercise test on a cycle ergometer. NIRS was used to assess deoxygenation of the respiratory muscles. Ventilatory parameters (oxygen uptake, carbon dioxide production, and ventilation minute), power output, and tissue saturation (StO2) were measured. Ventilatory threshold was determined by the two following methods: the V-slope method which corresponds to the breakpoint in VCO2 as a function VO2 relationship (VT(V-slope)) and the NIRS method which corresponds to the point of rapid fall in StO2 (VT(nirs)). During exercise, the respiratory muscles deoxygenated as the exercise intensity increased. StO2 decrease progressively until an abrupt decrease was observed. No significant differences were observed between cardiorespiratory variables corresponding either to VT(V-slope) or to VT(nirs). The two methods showed a good agreement (data were inside the 95 % confidence interval). Likewise, a significant relationship was found between VT(V-slope) and VT(nirs) for each parameter measured (r = 0.87 to 0.94, p < 0.001). We concluded that respiratory muscles deoxygenate during incremental exercise in children and that ventilatory threshold could be determined by NIRS.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

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

Collections :

• Autres travaux scientifiques

Submission date :

2021-11-11T19:54:54Z
2021-11-30T07:48:27Z