 The investigators are conducting a clinical research trial to determine the role of motivational interviewing MI on promoting home-based walking therapy to improve walking ability in African Americans with peripheral arterial disease PAD. African Americans are more than two times as likely as non-Hispanic whites to suffer from PAD. For patients with PAD, there is a significant risk for poor walking ability and limb loss. One major treatment for PAD is walking therapy but the traditional methods for the delivery of this treatment have required frequent visits to a university or hospital-based site. The investigators will address the role of self-managed walking program, to be conducted at or near the home, to improve limb function. In order to motivate the participants to walk, the investigators included two different intervention strategies: MI and patient-centered counseling for exercise PACE. The investigators hypothesize that participants randomized to the MI arm will have a greater increase in their walking distance, compared to those receiving Patient-Centered Assessment and Counseling for Exercise PACE and the control group. 