Central Illustration. Exercise or Intervention for Claudication Due to Aortoiliac Peripheral Artery Disease: Peak Walking Time and Claudication Onset Time.

Upper Panel: Peak Walking Time (PWT). Patients with 18-month follow-up visit only.
Lower Panel: Claudication Onset Time.
ABI = ankle brachial index in the most symptomatic leg; COT = claudication onset time on a graded treadmill test; PWT = peak walking time on a graded treadmill test.