Abstract 14789: A Home-Based Exercise Intervention Significantly Improves Walking Performance in Peripheral Arterial Disease: One-Year Follow-Up From a Randomized Controlled Trial
Background: Supervised treadmill exercise improves walking performance in peripheral artery disease (PAD) patients, but benefits are not sustained after supervised exercise is completed. We studied whether a six-month home-based walking exercise intervention employing a group-mediated cognitive behavioral (GMCB) intervention improved functional performance at twelve-month follow-up, compared to a control condition in PAD patients.
Methods: Participants with PAD were randomized to one of two arms (GMCB intervention vs. control). Each arm attended weekly meetings for six months. The intervention used group support and self-regulatory skills to help participants adhere to home-based exercise. The control condition received lectures about health topics not related to exercise. Primary outcomes were measured at six-month follow-up. Between 6 and 12 months after randomization, participants received telephone calls at scheduled intervals (weekly and then tapering to monthly for the final three months). Telephone calls helped intervention participants continue adhering to exercise and provided health information to the control condition. Six-minute walk, Walking Impairment Questionnaire (WIQ), and the short physical performance battery (SPPB) were measured at baseline and 12-month follow-up.
Results: One hundred sixty-eight of the 194 randomized participants (87%) participated in 12-month follow-up testing. Participants had a mean age of 70.96 years +9.28, a mean ABI of 0.68+0.17, included 51.2% females and 48.2% African-Americans.
Conclusions: A six-month GMCB intervention, designed to help PAD patients adhere to home-based exercise, resulted in sustained improvement in functional performance at 12-month follow-up. The magnitude of improvement at 12-month follow-up was somewhat less than that previously reported at 6-month follow-up.
- © 2013 by American Heart Association, Inc.