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Titolo:
Decrease of O-2 deficit is a potential factor in increased time to exhaustion after specific endurance training
Autore:
Demarle, AP; Slawinski, JJ; Laffite, LP; Bocquet, VG; Koralsztein, JP; Billat, VL;
Indirizzi:
CCAS, Ctr Sports Med, F-75010 Paris, France CCAS Paris France F-75010CCAS, Ctr Sports Med, F-75010 Paris, France Univ Lille 2, Lab Etud Motr Humaine, Fac Sci Sport, F-59790 Ronchin, France Univ Lille 2 Ronchin France F-59790 c Sci Sport, F-59790 Ronchin, France Univ Paris 05, Lab Stat Med, F-75006 Paris, France Univ Paris 05 Paris France F-75006 , Lab Stat Med, F-75006 Paris, France
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 3, volume: 90, anno: 2001,
pagine: 947 - 953
SICI:
8750-7587(200103)90:3<947:DOODIA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXYGEN-UPTAKE KINETICS; HEAVY EXERCISE; SLOW COMPONENT; AEROBIC PERFORMANCE; SUBMAXIMAL EXERCISE; FASTER ADJUSTMENT; BLOOD LACTATE; VO2; INTENSITY; STATE;
Keywords:
running; oxygen uptake kinetics; fatigue; interval training;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Billat, VL CCAS, Ctr Sports Med, 2 Ave Richerand, F-75010 Paris, France CCAS 2 Ave Richerand Paris France F-75010 -75010 Paris, France
Citazione:
A.P. Demarle et al., "Decrease of O-2 deficit is a potential factor in increased time to exhaustion after specific endurance training", J APP PHYSL, 90(3), 2001, pp. 947-953

Abstract

The main purpose of this study was to investigate the effects of an 8-wk severe interval training program on the parameters of oxygen uptake kinetics, such as the oxygen deficit and the slow component, and their potential consequences on the time until exhaustion in a severe run performed at the same absolute velocity before and after training. Six endurance-trained runners performed, on a 400-m synthetic track, an incremental test and an all-out test, at 93% of the velocity at maximal oxygen consumption, to assess thetime until exhaustion. These tests were carried out before and after 8 wk of a severe interval training program, which was composed of two sessions of interval training at 93% of the velocity at maximal oxygen consumption and three recovery sessions of continuous training at 60-70% of the velocity at maximal oxygen consumption per week. Neither the oxygen deficit nor the slow component were correlated with the time until exhaustion (r = -0.300, P = 0.24, n = 18 vs. r = -0.420, P = 0.09, n = 18, respectively). After training, the oxygen deficit significantly decreased (P = 0.02), and the slow component did not change (P = 0.44). Only three subjects greatly improved their time until exhaustion (by 10, 24, and 101%). The changes of oxygen deficit were significantly correlated with the changes of time until exhaustion (r = -0.911, P = 0.01, n = 6). It was concluded that; the decrease of oxygen deficit was a potential factor for the increase of time until exhaustion in a severe run performed after a specific endurance-training program.

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Documento generato il 04/04/20 alle ore 15:03:26