Walking training at the heart rate of pain threshold improves cardiovascular function and autonomic regulation in intermittent claudication: A randomized controlled trial

Chehuen, Marcel, Cucato, Gabriel, Carvalho, Celso Ricardo F., Ritti-Dias, Raphael M., Wolosker, Nelson, Leicht, Anthony S. and Forjaz, Cláudia Lúcia M. (2017) Walking training at the heart rate of pain threshold improves cardiovascular function and autonomic regulation in intermittent claudication: A randomized controlled trial. Journal of Science and Medicine in Sport, 20 (10). pp. 886-892. ISSN 1440-2440

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Abstract

OBJECTIVES: This study investigated the effects of walking training (WT) on cardiovascular function and autonomic regulation in patents with intermittent claudication (IC).

DESIGN: Randomized controlled trial.

METHODS: Forty-two male patients with IC (≥50years) were randomly allocated into two groups: control (CG, n=20, 30min of stretching exercises) and WT (WTG, n=22, 15 bouts of 2min of walking interpolated by 2min of upright rest-walking intensity was set at the heart rate of pain threshold). Both interventions were performed twice/week for 12 weeks. Walking capacity (maximal treadmill test), blood pressure (auscultatory), cardiac output (CO2 rebreathing), heart rate (ECG), stroke volume, systemic vascular resistance, forearm and calf vascular resistance (plethysmography), and low (LF) and high frequency (HF) components of heart rate variability and spontaneous baroreflex sensitivity were measured at baseline and after 12 weeks of the study.

RESULTS: WT increased total walking distance (+302±85m, p=0.001) and spontaneous baroreflex sensitivity (+2.13±1.07ms/mmHg, p=0.02). Additionally, at rest, WT decreased systolic and mean blood pressures (-10±3 and -5±2mmHg, p=0.001 and p=0.01, respectively), cardiac output (-0.37±0.24l/min, p=0.03), heart rate (-4±2bpm, p=0.001), forearm vascular resistance (-8.5±2.8U, p=0.02) and LF/HF (-1.24±0.99, p=0.001). No change was observed in the CG.

CONCLUSIONS: In addition to increasing walking capacity, WT improved cardiovascular function and autonomic regulation in patients with IC.

Item Type:	Article
Uncontrolled Keywords:	Peripheral arterial disease, Blood pressure, Hemodynamic, Autonomic modulation, Walking training
Subjects:	A300 Clinical Medicine A900 Others in Medicine and Dentistry B300 Complementary Medicine B900 Others in Subjects allied to Medicine C600 Sports Science
Department:	Faculties > Health and Life Sciences > Sport, Exercise and Rehabilitation
Depositing User:	Elena Carlaw
Date Deposited:	21 Nov 2019 17:16
Last Modified:	21 Nov 2019 17:16
URI:	http://nrl.northumbria.ac.uk/id/eprint/41583

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