▁is ▁sometimes ▁defined ▁equival ently ▁to ▁the ▁la ct ate ▁threshold ( LT ); ▁as ▁the ▁exercise ▁intensity ▁beyond ▁which ▁blood ▁la ct ate ▁concentration ▁is ▁no ▁longer ▁linear ly ▁related ▁to ▁exercise ▁intensity , ▁but ▁increases ▁with ▁both ▁exercise ▁intensity ▁and ▁duration . ▁ ▁The ▁blood ▁la ct ate ▁concentration ▁at ▁the ▁an a er ob ic ▁threshold ▁is ▁called ▁the ▁" maxim um ▁steady - state ▁la ct ate ▁concentration " ▁( ML SS ). ▁ ▁A e T ▁is ▁the ▁exercise ▁intensity ▁at ▁which ▁an a er ob ic ▁energy ▁path ways ▁start ▁to ▁operate , ▁considered ▁to ▁be ▁around ▁ 6 5 - 8 5 % ▁of ▁an ▁individual ' s ▁maximum ▁heart ▁rate . ▁ ▁Some ▁have ▁suggested ▁this ▁is ▁where ▁blood ▁la ct ate ▁reaches ▁a ▁concentration ▁of ▁ 2 ▁mm ol / lit re ▁( at ▁rest ▁it ▁is ▁around ▁ 1 ). ▁The ▁an a er ob ic ▁energy ▁system ▁increases ▁the ▁ability ▁to ▁produce ▁blood ▁la ct ate ▁during ▁maximal ▁exercise , ▁resulting ▁from ▁an ▁increased ▁amount ▁of ▁g ly c ogen ▁stores ▁and ▁g ly col yt ic ▁en zym es . ▁ ▁See ▁also ▁▁ ▁Aer ob ic ▁exercise ▁Ana er ob ic ▁exercise ▁Running ▁economy ▁V O 2 ▁max ▁v VO 2 max ▁ ▁References ▁▁ ▁Category : A er ob ic ▁exercise ▁Category : Ex erc ise ▁phys i ology ▁Category : S ports ▁termin ology ▁Category : S port ▁of ▁athlet ics ▁termin ology <0x0A> </s> ▁Post cards ▁may