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Item Metadata only Anaerobic threshold in short-, middle- and long-distance runners(Mahidol University. Mahidol University Library and Knowledge Center, 1987) Apasara Arkarapanthu; Charoentasn Chintanaseri; Myint, Aung; Thirayudh Glinsukon; Nisarat Chaideeevery minute for lactate analysis throughout the test until exhaustion. The following indices were used to identify the AT : 1) a point at which end-tidal carbondioxide percentage (%CO(,2ET)) begins to decrease; 2) ventilator equivalent for carbondioxde... (V(,E)/VCO(,2)), end-tidal oxygen percentage (%O(,2ET)), ventilator equivalent for oxygen (V(,E)/VO(,2)) and respiratory gas exchange ratio (R) reach a minimum and begin to increase; 3) a nonlinear increase in minute ventilation (V(,E