Effect of high-intensity interval versus continuous exercise training on functional capacity and quality of life in patients with coronary artery disease.
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2015
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Journal of cardiopulmonary rehabilitation and prevention
Abstract
There is strong evidence that exercise training has beneficial
health effects in patients with cardiovascular disease. Most studies
have focused on moderate continuous training (MCT); however, a
body of evidence has begun to emerge demonstrating that highintensity
interval training (HIIT) has significantly better results in terms
of morbidity and mortality. The aim of this study was to compare the
effects of MCT versus HIIT on functional capacity and quality of life
and to assess safety. Seventy-two patients with ischemic heart disease were
assigned to either HITT or MCT for 8 weeks. We analyzed cardiopulmonary
exercise stress test data, quality of life, and adverse events.High-intensity interval training resulted in a significantly greater
increase in V ·
O 2 peak (4.5 ± 4.7 mL·kg − 1 ·min − 1 ) compared with MCT
(2.5 ± 3.6 mL·kg − 1 ·min − 1 ) ( P < .05). The aerobic threshold (V T 1 )
increased by 21% in HIIT and 14% in MCT. Furthermore, there was a
significant ( P < .05) increase in the distance covered in the 6-minute
walk distance test in the HIIT group (49.6 ± 6.3 m) when compared
with the MCT group (29.6 ± 12.0 m). Both training protocols
improved quality of life. No adverse events were reported in either of
the groups.On the basis of the results of this study, HIIT should be
considered for use in cardiac rehabilitation as it resulted in a greater
increase in functional capacity compared with MCT. We also observed
greater improvement in quality of life without any increase in cardiovascular
risk.
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Keywords
Enfermedades coronarias, Entrenamientos de alta intensidad, Calidad de vida