Walking training improves systemic and local pathophysiological processes in intermittent claudication

Andrade-Lima, Aluisio, Silva Junior, Natan, Chehuen, Marcel, Miyasato, Roberto, Souza, Rodrigo W.A., Leicht, Anthony S., Brum, Patricia C., de Oliveira, Edilamar M., Wolosker, Nelson, and Forjaz, Claudia L.M. (2021) Walking training improves systemic and local pathophysiological processes in intermittent claudication. European Journal of Vascular and Endovascular Surgery, 61 (6). pp. 954-963.

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Objective: This study examined the impact of submaximal walking training (WT) on local and systemic nitric oxide (NO) bioavailability, inflammation, and oxidative stress in patients with intermittent claudication (IC). Methods: The study employed a randomised, controlled, parallel group design and was performed in a single centre. Thirty-two men with IC were randomly allocated to two groups: WT (n = 16, two sessions/week, 15 cycles of two minutes walking at an intensity corresponding to the heart rate obtained at the pain threshold interspersed by two minutes of upright rest) and control (CO, n = 16, two sessions/week, 30 minutes of stretching). NO bioavailability (blood NO and muscle nitric oxide synthase [eNOS]), redox homeostasis (catalase [CAT], superoxide dismutase [SOD], lipid peroxidation [LPO] measured in blood and muscle), and inflammation (interleukin-6 [IL-6], C-reactive protein [CRP], tumour necrosis factor α [TNF-α], intercellular adhesion molecules [ICAM], vascular adhesion molecules [VCAM] measured in blood and muscle) were assessed at baseline and after 12 weeks. Results: WT statistically significantly increased blood NO, muscle eNOS, blood SOD and CAT, and muscle SOD and abolished the increase in circulating and muscle LPO observed in the CO group. WT decreased blood CRP, ICAM, and VCAM and muscle IL-6 and CRP and eliminated the increase in blood TNF-α and muscle TNF-α, ICAM and VCAM observed in the CO group. Conclusion: WT at an intensity of pain threshold improved NO bioavailability and decreased systemic and local oxidative stress and inflammation in patients with IC. The proposed WT protocol provides physiological adaptations that may contribute to cardiovascular health in these patients.

Item ID: 70373
Item Type: Article (Research - C1)
ISSN: 1532-2165
Keywords: Atherosclerosis, Cardiovascular risk, Intermittent claudication, Physical exercise
Copyright Information: Published Version: © 2021 European Society for Vascular Surgery. Published by Elsevier B.V. Accepted Version: © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Date Deposited: 26 Nov 2021 04:00
FoR Codes: 42 HEALTH SCIENCES > 4207 Sports science and exercise > 420702 Exercise physiology @ 50%
32 BIOMEDICAL AND CLINICAL SCIENCES > 3201 Cardiovascular medicine and haematology > 320101 Cardiology (incl. cardiovascular diseases) @ 50%
SEO Codes: 20 HEALTH > 2001 Clinical health > 200105 Treatment of human diseases and conditions @ 100%
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