Minimal correlation between physical exercise capacity and daily activity in patients with intermittent claudication.

Background: Walking capacity measured by a treadmill test (TT) reflects the patient's maximal capacity in a controlled setting and is part of the physical exercise capacity (PEC). Daily physical activity (PA) is defined as the total of actively freely produced movements per day. A lower PA level has been increasingly recognized as a strong predictor of increased morbidity and mortality in patients with intermittent claudication (IC).