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Effects of a 6-month exercise program pilot study on walking economy, peak physiological characteristics, and walking performance in patients with peripheral arterial disease - PubMed

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Randomized Controlled Trial

Effects of a 6-month exercise program pilot study on walking economy, peak physiological characteristics, and walking performance in patients with peripheral arterial disease

Robert G Crowther et al. Vasc Health Risk Manag. 2012.

Abstract

The purpose of this study was to examine the effects of a 6-month exercise program on submaximal walking economy in individuals with peripheral arterial disease and intermittent claudication (PAD-IC). Participants (n = 16) were randomly allocated to either a control PAD-IC group (CPAD-IC, n = 6) which received standard medical therapy, or a treatment PAD-IC group (TPAD-IC; n = 10) which took part in a supervised exercise program. During a graded treadmill test, physiological responses, including oxygen consumption, were assessed to calculate walking economy during submaximal and maximal walking performance. Differences between groups at baseline and post-intervention were analyzed via Kruskal-Wallis tests. At baseline, CPAD-IC and TPAD-IC groups demonstrated similar walking performance and physiological responses. Postintervention, TPAD-IC patients demonstrated significantly lower oxygen consumption during the graded exercise test, and greater maximal walking performance compared to CPAD-IC. These preliminary results indicate that 6 months of regular exercise improves both submaximal walking economy and maximal walking performance, without significant changes in maximal walking economy. Enhanced walking economy may contribute to physiological efficiency, which in turn may improve walking performance as demonstrated by PAD-IC patients following regular exercise programs.

Keywords: peripheral vascular disease; vascular disease; walking economy.

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Figures

Figure 1
Figure 1

Walking economy during graded treadmill testing at 0- and 6-months for control peripheral arterial disease-intermittent claudication patients (CPAD-IC) and treatment for peripheral arterial disease-intermittent claudication patients (TPAD-IC). Note: *P < 0.05 versus TPAD-IC.

Figure 2
Figure 2

Submaximal and peak physiological characteristics during graded treadmill testing at 0- and 6-months for control peripheral arterial disease-intermittent claudication patients (CPAD-IC) and treatment for peripheral arterial disease-intermittent claudication patients (TPAD-IC). Note: *P < 0.05 versus TPAD-IC.

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