Cobert presents with a history of peripheral artery disease and was referred to physical therapy for walking endurance. He reports intermittent claudication in his calves after walking 100 meters and frequently stops to rest. His resting ABI is 0.7 in both legs. The goal is to enhance his functional capacity and quality of life. Which walking program is MOST appropriate to improve this patient’s functional capacity?

A) Treadmill walking at 60% of maximal heart rate, continuous for 30 minutes

B) Walking to the point of moderate pain, resting, and repeating for 30 minutes total

C) Interval walking at high intensity with short rest breaks

D) Walking with partial body weight support to reduce claudication pain

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