Aerobic fitness influences cerebral ...
Document type :
Article dans une revue scientifique
PMID :
Permalink :
Title :
Aerobic fitness influences cerebral oxygenation response to maximal exercise in healthy subjects
Author(s) :
Oussaidene, Kahina [Auteur]
Prieur, Fabrice [Auteur]
Tagougui, Sémah [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Abaïdia, Abd-Elbasset [Auteur]
Matran, Regis [Auteur]
Impact de l'environnement chimique sur la santé humaine - ULR 4483 [IMPECS]
Mucci, Patrick [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Prieur, Fabrice [Auteur]
Tagougui, Sémah [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Abaïdia, Abd-Elbasset [Auteur]
Matran, Regis [Auteur]
Impact de l'environnement chimique sur la santé humaine - ULR 4483 [IMPECS]
Mucci, Patrick [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Journal title :
Respiratory physiology & neurobiology
Abbreviated title :
Respir. Physiol. Neuro.
Volume number :
205
Pages :
53-60
Publication date :
2015-01-01
ISSN :
1569-9048
English keyword(s) :
Ventilatory threshold
Near-infrared spectroscopy (NIRS)
Endurance training
Cerebral deoxygenation
Exhaustive cycle exercise
Near-infrared spectroscopy (NIRS)
Endurance training
Cerebral deoxygenation
Exhaustive cycle exercise
HAL domain(s) :
Sciences du Vivant [q-bio]
English abstract : [en]
The study examined whether the aerobic fitness level modifies the cerebral oxygenation response to incremental ramp exercise, and more specifically the decline in cerebral oxygenation from heavy exercise up to maximal ...
Show more >The study examined whether the aerobic fitness level modifies the cerebral oxygenation response to incremental ramp exercise, and more specifically the decline in cerebral oxygenation from heavy exercise up to maximal intensities. 11 untrained (VO2max 47.3±4.0 mL min(-1) kg(-1)) and 13 endurance-trained (VO2max 61.2±8.0 mL min(-1) kg(-1)) healthy men performed a maximal ramp cycle exercise. Left prefrontal cortex oxygenation (ΔHbO2) was monitored by near-infrared spectroscopy. A cerebral oxygenation threshold decline (ThCOx) during exercise was determined. ThCox occurred in all subjects but for higher VO2 (mL min(-1) kg(-1)) in endurance-trained than in untrained subjects (P<0.01). At submaximal exercise intensity corresponding to ThCOx, ΔHbO2 was higher in endurance-trained than in untrained subjects (P<0.05). VO2 at ThCox was related to VO2 at respiratory compensation point (n=24, r=0.93, P<0.001) and to VO2max (n=24, r=0.92, P<0.001). These findings indicate that above the respiratory compensation point the prefrontal O2 demand exceeds the supply in untrained and in endurance-trained subjects. In addition, the occurrence of ThCOx was delayed to higher absolute exercise intensities in endurance-trained in relation with their higher VO2max than untrained men. These results demonstrated that aerobic fitness influences cerebral oxygenation during exercise.Show less >
Show more >The study examined whether the aerobic fitness level modifies the cerebral oxygenation response to incremental ramp exercise, and more specifically the decline in cerebral oxygenation from heavy exercise up to maximal intensities. 11 untrained (VO2max 47.3±4.0 mL min(-1) kg(-1)) and 13 endurance-trained (VO2max 61.2±8.0 mL min(-1) kg(-1)) healthy men performed a maximal ramp cycle exercise. Left prefrontal cortex oxygenation (ΔHbO2) was monitored by near-infrared spectroscopy. A cerebral oxygenation threshold decline (ThCOx) during exercise was determined. ThCox occurred in all subjects but for higher VO2 (mL min(-1) kg(-1)) in endurance-trained than in untrained subjects (P<0.01). At submaximal exercise intensity corresponding to ThCOx, ΔHbO2 was higher in endurance-trained than in untrained subjects (P<0.05). VO2 at ThCox was related to VO2 at respiratory compensation point (n=24, r=0.93, P<0.001) and to VO2max (n=24, r=0.92, P<0.001). These findings indicate that above the respiratory compensation point the prefrontal O2 demand exceeds the supply in untrained and in endurance-trained subjects. In addition, the occurrence of ThCOx was delayed to higher absolute exercise intensities in endurance-trained in relation with their higher VO2max than untrained men. These results demonstrated that aerobic fitness influences cerebral oxygenation during exercise.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CHU Lille
Univ. Littoral Côte d’Opale
Univ. Artois
Université de Lille
Institut Pasteur de Lille
Univ. Littoral Côte d’Opale
Univ. Artois
Université de Lille
Institut Pasteur de Lille
Collections :
Research team(s) :
Activité Physique, Muscle, Santé (APMS)
Submission date :
2019-09-24T07:28:50Z
2021-05-26T13:16:24Z
2021-05-26T13:16:24Z