Figure 2From: Whole body oxygen uptake and evoked knee torque in response to low frequency electrical stimulation of the quadriceps muscles: V • O 2 frequency response to NMESSample time-averaged oxygen uptake and torque functions. Average V . O 2 ,TTI, and dTTI for the last 60 seconds of each bout, as a function of stimulation frequency, for a typical subject.Back to article page