... case and 2 I/min in the other. If they each have to do work that requires an oxygen consumption 1.5 l/min (approx. 7-8 kcal/min (29-33 KJ)), this work level is 50 per cent of the maximal capability of the first man but 75 per cent that of the second. (Astrand, P.O.1956) Vo2 max is often expressed, not as l/min but as ml/kg of body mass/mint Very approximate levels for people of varying degrees of fitness might be 3545 ml/kg/min for an average young man and 50 ml or more for a young man of higher levels of fitness. Extremely fit men may have values of 70-80 ml/kg/min or even higher, but these are exceptional values. There is also a difference between the sexes, with women having about 15-20 per cent lower values. Mc Ardle, Katch, Katch (1994). When O2 max is being measured on an individual, it can be measured either ...

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