Figure 7
From: Anaerobic threshold, is it a magic number to determine fitness for surgery?
Oxygen pulse under two different conditions. (a,b) Panel 2 on the traditional Wasserman et al. 9-panel plot. In both cases, the patients are taking beta-adrenergic blocking drugs. (a) A low oxygen pulse in a woman. (b) An elevated oxygen pulse on a female patient. Note the low pulse rate and the compensating elevated oxygen pulse. The lower horizontal dotted line is the predicted value.