Effects of High-Intensity Interval Training on Aerobic Capacity in Cardiac Patients: A Systematic Review with Meta-Analysis

Abstract

Purpose. The aim of this study was to compare the effects of high-intensity interval training (INTERVAL) and moderate-intensity continuous training (CONTINUOUS) on aerobic capacity in cardiac patients. Methods. A meta-analysis identified by searching the PubMed, Cochrane Library, EMBASE, and Web of Science databases from inception through December 2016 compared the effects of INTERVAL and CONTINUOUS among cardiac patients. Results. Twenty-one studies involving 736 participants with cardiac diseases were included. Compared with CONTINUOUS, INTERVAL was associated with greater improvement in peak VO2 (mean difference 1.76 mL/kg/min, 95% confidence interval 1.06 to 2.46 mL/kg/min, p < 0.001) and VO2 at AT (mean difference 0.90 mL/kg/min, 95% confidence interval 0.0 to 1.72 mL/kg/min, p = 0.03). No significant difference between the INTERVAL and CONTINUOUS groups was observed in terms of peak heart rate, peak minute ventilation, VE/VCO2 slope and respiratory exchange ratio, body mass, systolic or diastolic blood pressure, triglyceride or low- or high-density lipoprotein cholesterol level, flow-mediated dilation, or left ventricular ejection fraction. Conclusions. This study showed that INTERVAL improves aerobic capacity more effectively than does CONTINUOUS in cardiac patients. Further studies with larger samples are needed to confirm our observations.

Efectos del entrenamiento por intervalos vs entrenamiento continuo sobre capacidad aeróbica en pacientes con enfermedad de las arterias coronarias

“…La magnitud de esta diferencia entre entrenamientos resulta clínicamente relevante ya que por cada 1 mL/kg/min de incremento del VO2pico se reduce aproximadamente un 15% del riesgo de mortalidad por toda causa y mortalidad cardiovascular en esta población (Pattyn et al, 2014). Estudios anteriores también han encontrado resultados beneficiosos del HIIT sobre la capacidad aeróbica en esta población (Guiraud et al, 2012;Xie, Yan, Cai, y Li, 2017). Los mecanismos potenciales para mayores mejorías incluyen un aumento en el coactivador 1-alfa del receptor activado gamma del proliferador de peroxisoma (PGC-1 ), mejorando la función mitocondrial y aumentando la tasa máxima de re-captación de Ca2+ en el retículo sarcoplásmico .…”

Entrenamiento De Intervalos De Alta Intensidad (Hiit) en Adultos Mayores: Una Revisión Sistemática

“…doi: http//dx.doi.org/10. 15517/pensarmov.v17i1.35494 se ha encontrado que el HIIT mejora la capacidad aeróbica, la función endotelial y diversas funciones cardiacas (Xie, Yan, Cai, & Li, 2017).…”

Muscular glucose metabolism in middle-age trained rats

“…Aerobic capacity, also known as maximum oxygen consumption (VO 2max ), is the maximum amount of oxygen uptake, transport and use during an exercise session for the generation of energy [11]. Improvements in aerobic capacity over time are possible with regular physical exercise, but a decrease in this capacity occurs in response to several factors, including a reduction in physical activity, chronic disease and aging [12][13][14]. Aerobic capacity is an important parameter for training development and the evaluation of fitness improvement in athletes.…”