Eccentric Strength and Endurance in Patients with Unilateral Intermittent Claudication

Abstract

Basyches M, Wolosker N, Ritti-Dias RM, Câmara LC, Puech-Leão P, Battistella LR. Eccentric strength and endurance in patients with unilateral intermittent claudication. Clinics. 2009;64(4):319-22. OBJECTIVE:To analyze concentric and eccentric strength and endurance in patients with unilateral intermittent claudication. INTRODUCTION: Basic motor tasks are composed of concentric, isometric, and eccentric actions, which are related and contribute to physical performance. In previous studies of patients with intermittent claudication, the disease-related reduction in concentric and isometric muscular strength and endurance resulted in poorer walking performance. To date, no study has evaluated eccentric muscle action in patients with intermittent claudication. METHODS: Eleven patients with unilateral intermittent claudication performed isokinetic concentric and eccentric actions at the ankle joints to assess peak torque and total work in both symptomatic and asymptomatic legs. RESULTS: Concentric peak torque and total work were lower in the symptomatic than in the asymptomatic leg (80 ± 32 vs. 95 ± 41 N/m, P = 0.01; 1479 ± 667 vs. 1709 ± 879 J, P = 0.03, respectively). There were no differences in eccentric peak torque and total work between symptomatic and asymptomatic legs (96 ± 30 vs. 108 ± 48 N/m; 1852 ± 879 vs. 1891 ± 755 J, respectively). CONCLUSION: Strength and endurance in the symptomatic leg were lower during concentric compared to eccentric action. Future studies are recommended to investigate the mechanisms underlying these responses and to analyze the effects of interventions to improve concentric strength and endurance on functional limitations in patients with intermittent claudication.

Barriers and Levels of Physical Activity in Patients With Symptomatic Peripheral Artery Disease: Comparison Between Women and Men

“…Intermittent claudication (IC), the main symptom of PAD, is defined as muscle discomfort in the legs caused by exercise and is relieved by short periods of rest (Norgren et al, 2007). IC reduces walking capacity and daily physical activity levels (Sieminski & Gardner, 1997) leading to a progressive deconditioning cycle that impairs aerobic ) and muscle (Basyches et al, 2009) functions, affecting the quality of life (Menêses et al, 2011).…”

Factors Associated with Sedentary Behavior in Patients with Intermittent Claudication

“…Patients with intermittent claudication have impaired walking capacity 3 , low physical fitness 4, 5 , and many comorbid conditions 6 , all of which reduce quality of life 7 . In addition, these patients have elevated time spent in sedentary behavior 8 .…”

Creatine supplementation as a potential therapeutic aid in peripheral arterial obstructive disease rehabilitation

“…31 In this field, scientific literature has been previously documented reduced values of strength, power and endurance in patients when compared with non diseased controls. [7][8][9]16,17,30,[32][33][34] Once muscular strength could be strongly correlated with walking capacity (most accessed measure of fitness capacity) in PAOD patients by Regensteiner et al 34 and Gerdle et al 32 interventions (resistance training) to counteract this condition has been proposed 11,12 and studied with documented positive benefits. [13][14][15][16][17] Additional to resistance training, as a beneficial exercise type prescription in non diseased population, 35 association of Cr supplementation has been studied and proposed as a more effective intervention to improvements muscular strength.…”

“…4,5 In peripheral arterial obstructive disease (PAOD), the chronic obstruction in blood flow to distal territories due to atherosclerotic process, and its consequence and constant mismatch between oxygen delivery and demand, lead to a progressive disability cycle involving muscle fiber atrophy and denervation, negative muscle metabolism alterations, reduced strength and endurance, impairing general physical fitness capacity, specially walking capacity, in diseased individuals. [6][7][8][9] Cost-effectiveness strategies 10 to counteract muscle, nerve and metabolism impairments, and to reduce the loss of physical fitness capacity, like exercise training have been previously proposed 11,12 and studied. [13][14][15][16][17] Therefore, adding up the cost-effectiveness and the safety profile of studied benefits of Cr supplementation 18,19 and the clinical frame of PAOD, the use of Cr rises as a potential therapeutic aid to be considered.…”