Trail et nature
VM6 = vitesse maximum tenue sur 6 min (calcul de distance et conversion en kmh) (~VMA)
Sur 6min, on a une conversion facile distance <-> vitesse: 1400m <-> 14km/h
AL2+ = 90-95% VM6
AL26 = 80-85% VM6
Footing = 50-75% VM6
Recup (entre serie) = 50-60% VM6
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