Oxygen kinetics and modelling of time to ...
Document type :
Article dans une revue scientifique: Article original
PMID :
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Title :
Oxygen kinetics and modelling of time to exhaustion whilst running at various velocities at maximal oxygen uptake.
Author(s) :
Billat, V L [Auteur]
Université de Lille
Morton, R H [Auteur]
Massey University
Blondel, Nicolas [Auteur]
Université de Lille
Berthoin, Serge [Auteur]
Université de Lille
Bocquet, V [Auteur]
Koralsztein, J P [Auteur]
Barstow, T J [Auteur]
Kansas State University
morton [Auteur]
Université de Lille
Morton, R H [Auteur]
Massey University
Blondel, Nicolas [Auteur]
Université de Lille
Berthoin, Serge [Auteur]
Université de Lille
Bocquet, V [Auteur]
Koralsztein, J P [Auteur]
Barstow, T J [Auteur]
Kansas State University
morton [Auteur]
Journal title :
European Journal of Applied Physiology
Abbreviated title :
Eur J Appl Physiol
Volume number :
82
Pages :
178-187
Publication date :
2000-06-01
ISSN :
1439-6319
English keyword(s) :
Adult
Humans
Kinetics
Male
Models, Biological
Oxygen Consumption
Physical Endurance
Running
Time Factors
Humans
Kinetics
Male
Models, Biological
Oxygen Consumption
Physical Endurance
Running
Time Factors
HAL domain(s) :
Sciences du Vivant [q-bio]/Médecine humaine et pathologie/Physiologie [q-bio.TO]
English abstract : [en]
The purpose of this study was to characterise the relationship between running velocity and the time for which a subject can run at maximal oxygen uptake (VO2max), (tlimVO2max). Seven physical education students ran in an ...
Show more >The purpose of this study was to characterise the relationship between running velocity and the time for which a subject can run at maximal oxygen uptake (VO2max), (tlimVO2max). Seven physical education students ran in an incremental test (3-min stages) to determine VO2max and the minimal velocity at which it was elicited (vVO2max). They then performed four all-out running tests on a 200-m indoor track every 2 days in random order. The mean times to exhaustion tlim at 90%, 100%, 120% and 140% vVO2max were 13 min 22 s (SD 4 min 30 s), 5 min 47 s (SD 1 min 50 s), 2 min 11 s (SD 38 s) and 1 min 12 s (SD 18 s), respectively. Five subjects did not reach VO2max in the 90% vVO2max test. All the subjects reached VO2max in the runs at 100% vVO2max. All the subjects, except one, reached VO2max in the runs at 120% vVO2max. Four subjects did not reach VO2max in the 140% vVO2max test. Time to achieve VO2max was always about 50% of the time to exhaustion irrespective of the intensity. The time to exhaustion-velocity relationship was better fitted by a 3- than by a 2-parameter critical power model for running at 90%, 100%, 120%, 140% vVO2max as determined in the previous incremental test. In conclusion, tlimVO2max depended on a balance between the time to attain VO2max and the time to exhaustion tlim. The time to reach VO2max decreased as velocity increased. The tlimVO2max was a bi-phasic function of velocity, with a peak at 100% vVO2max.Show less >
Show more >The purpose of this study was to characterise the relationship between running velocity and the time for which a subject can run at maximal oxygen uptake (VO2max), (tlimVO2max). Seven physical education students ran in an incremental test (3-min stages) to determine VO2max and the minimal velocity at which it was elicited (vVO2max). They then performed four all-out running tests on a 200-m indoor track every 2 days in random order. The mean times to exhaustion tlim at 90%, 100%, 120% and 140% vVO2max were 13 min 22 s (SD 4 min 30 s), 5 min 47 s (SD 1 min 50 s), 2 min 11 s (SD 38 s) and 1 min 12 s (SD 18 s), respectively. Five subjects did not reach VO2max in the 90% vVO2max test. All the subjects reached VO2max in the runs at 100% vVO2max. All the subjects, except one, reached VO2max in the runs at 120% vVO2max. Four subjects did not reach VO2max in the 140% vVO2max test. Time to achieve VO2max was always about 50% of the time to exhaustion irrespective of the intensity. The time to exhaustion-velocity relationship was better fitted by a 3- than by a 2-parameter critical power model for running at 90%, 100%, 120%, 140% vVO2max as determined in the previous incremental test. In conclusion, tlimVO2max depended on a balance between the time to attain VO2max and the time to exhaustion tlim. The time to reach VO2max decreased as velocity increased. The tlimVO2max was a bi-phasic function of velocity, with a peak at 100% vVO2max.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
Univ. Artois
Univ. Littoral Côte d’Opale
Collections :
Research team(s) :
Activité Physique, Muscle, Santé (APMS)
Submission date :
2021-11-11T15:00:29Z
2021-11-19T12:58:15Z
2021-11-23T07:44:35Z
2021-11-19T12:58:15Z
2021-11-23T07:44:35Z
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