tokens: Consequently , significant differences between the measured and calculated methods were noted in oxygen uptake ( 213 + / - 41 ml / min vs 193 + / - 25 ml / min , p < 0 . 001 ) , oxygen delivery ( 780 + / - 297 ml / min vs 716 + / - 296 ml / min , p < 0 . 001 ) , and cardiac output ( 5 . 8 + / - 2 . 2 L / min vs 5 . 3 + / - 1 . 8 L / min , p < 0 . 001 ) .