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F
7.2 ZIA ET MESURE DU LACTATE (AVANTAGES, BASES)
Informations sur la ZIA
Le seuil anrobie est ts important pour l’efficacité du Training
car d’importants paratres de performance pour l’endurance
peuvent être terminés grâce à cette valeur (% inférieur et
surieur à la ZIA). En fonction de l’intensi de l’effort, le corps
produit l’énergie nécessaire à partir de différentes sources. Nous
pouvons faire la difrence entre trois situations pour le seuil
anaérobie :
k Lorsque l‘effort est sous le seuil anaérobie, la mise à disposi-
tion d‘énergie se fait principalement par le métabolisme de
l‘oxygène, c‘est-à-dire “aérobie”. L’endurance peut donc être
maintenue un long moment, par exemple pour un marathon.
k Un effort équivalent au seuil anaérobie est un effort relative-
ment plus élevé pouvant être maintenu un long moment.
(les réserves de glycogènes sont cependant épuisées au
bout de 60 à 90 minutés d’un Training intensif, selon l’état
de Training.)
k Un effort supérieur au seuil anaérobie entraîne une partie
essentielle de la mise à disposition d’énergie “anaérobie”.
Ceci provoque une augmentation de l’acide lactique nuisant
aux performances de sorte que l’effort ne peut être maintenu
qu’à court terme (quelques minutes).
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