[Doppler echographic criteria in determination of the aerobic threshold and ischemia of the lower limbs].

Doppler echographic criteria were developed to define the anaerobic threshold and to detect lower extremity ischemia. Multi-stage treadmill test provided the criteria involving impairments in the time course of recovery of continuous diastolic blood flow in the lower extremity arteries. The criteria allow the anaerobic threshold to be defined in the range of low and high exercises and the severity of ischemia of the saved and amputated limb to be assessed in arterial occlusions. The diagnostic sensitivity of the criteria is 82-87%, its specificity and predictive value are 95-100%.