The effect of exercise intensity on the response to exercise rehabilitation in patients with intermittent claudication

Andrew W. Gardner, Polly S. Montgomery, William R. Flinn, Leslie I. Katzel

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

Purpose: The purpose of this randomized trial was to compare the efficacy of a low-intensity exercise rehabilitation program vs a high-intensity program in changing physical function, peripheral circulation, and health-related quality of life in peripheral arterial disease (PAD) patients limited by intermittent claudication. Methods: Thirty-one patients randomized to low-intensity exercise rehabilitation and 33 patients randomized to high-intensity exercise rehabilitation completed the study. The 6-month exercise rehabilitation programs consisted of intermittent treadmill walking to near maximal claudication pain 3 days per week at either 40% (low-intensity group) or 80% (high-intensity group) of maximal exercise capacity. Total work performed in the two training regimens was similar by having the patients in the low-intensity group exercise for a longer duration than patients in the high-intensity group. Measurements of physical function, peripheral circulation, and health-related quality of life were obtained on each patient before and after the rehabilitation programs. Results: After the exercise rehabilitation programs, patients in the two groups had similar improvements in these measures. Initial claudication distance increased by 109% in the low-intensity group (P < .01) and by 109% in the high-intensity group (P < .01), and absolute claudication distance increased by 61% (P < 0.01) and 63% (P < .01) in the low-intensity and high-intensity groups, respectively. Furthermore, both exercise programs elicited improvements (P < .05) in peak oxygen uptake, ischemic window, and health-related quality of life. Conclusion: The efficacy of low-intensity exercise rehabilitation is similar to high-intensity rehabilitation in improving markers of functional independence in PAD patients limited by intermittent claudication, provided that a few additional minutes of walking is accomplished to elicit a similar volume of exercise.

Original languageEnglish (US)
Pages (from-to)702-709
Number of pages8
JournalJournal of Vascular Surgery
Volume42
Issue number4
DOIs
StatePublished - Oct 1 2005

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Exercise Therapy
Intermittent Claudication
Exercise
Peripheral Arterial Disease
Quality of Life
Walking
Rehabilitation
Oxygen
Pain

All Science Journal Classification (ASJC) codes

  • Surgery
  • Cardiology and Cardiovascular Medicine

Cite this

Gardner, Andrew W. ; Montgomery, Polly S. ; Flinn, William R. ; Katzel, Leslie I. / The effect of exercise intensity on the response to exercise rehabilitation in patients with intermittent claudication. In: Journal of Vascular Surgery. 2005 ; Vol. 42, No. 4. pp. 702-709.
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abstract = "Purpose: The purpose of this randomized trial was to compare the efficacy of a low-intensity exercise rehabilitation program vs a high-intensity program in changing physical function, peripheral circulation, and health-related quality of life in peripheral arterial disease (PAD) patients limited by intermittent claudication. Methods: Thirty-one patients randomized to low-intensity exercise rehabilitation and 33 patients randomized to high-intensity exercise rehabilitation completed the study. The 6-month exercise rehabilitation programs consisted of intermittent treadmill walking to near maximal claudication pain 3 days per week at either 40{\%} (low-intensity group) or 80{\%} (high-intensity group) of maximal exercise capacity. Total work performed in the two training regimens was similar by having the patients in the low-intensity group exercise for a longer duration than patients in the high-intensity group. Measurements of physical function, peripheral circulation, and health-related quality of life were obtained on each patient before and after the rehabilitation programs. Results: After the exercise rehabilitation programs, patients in the two groups had similar improvements in these measures. Initial claudication distance increased by 109{\%} in the low-intensity group (P < .01) and by 109{\%} in the high-intensity group (P < .01), and absolute claudication distance increased by 61{\%} (P < 0.01) and 63{\%} (P < .01) in the low-intensity and high-intensity groups, respectively. Furthermore, both exercise programs elicited improvements (P < .05) in peak oxygen uptake, ischemic window, and health-related quality of life. Conclusion: The efficacy of low-intensity exercise rehabilitation is similar to high-intensity rehabilitation in improving markers of functional independence in PAD patients limited by intermittent claudication, provided that a few additional minutes of walking is accomplished to elicit a similar volume of exercise.",
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The effect of exercise intensity on the response to exercise rehabilitation in patients with intermittent claudication. / Gardner, Andrew W.; Montgomery, Polly S.; Flinn, William R.; Katzel, Leslie I.

In: Journal of Vascular Surgery, Vol. 42, No. 4, 01.10.2005, p. 702-709.

Research output: Contribution to journalArticle

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