Aerobic interval training reduces vascular resistances during submaximal exercise in obese metabolic syndrome individuals

Autor: Valentín E. Fernández-Elías, Jesús G. Pallarés, Felix Morales-Palomo, Miguel Ramirez-Jimenez, Ricardo Mora-Rodriguez, Juan F. Ortega
Rok vydání: 2017
Předmět:
Male
Síndrome metabólico
Physiology
Hemodynamics
High-Intensity Interval Training
030204 cardiovascular system & hematology
Síndrome metabólico X
Interval training
Vascular resistance
0302 clinical medicine
Entrenamiento deportivo
Orthopedics and Sports Medicine
Metabolic Syndrome
education.field_of_study
General Medicine
Middle Aged
Deporte
Exercise Therapy
medicine.anatomical_structure
Cardiorespiratory Fitness
Cardiology
Female
High-intensity interval training
Cardiac output
Adult
medicine.medical_specialty
Population
Entrenamiento de ejercicio
Exercise training
03 medical and health sciences
Oxygen Consumption
Metabolic syndrome X
Physiology (medical)
Internal medicine
Heart rate
medicine
Humans
Obesity
education
business.industry
Public Health
Environmental and Occupational Health
Medicina deportiva
Cardiorespiratory fitness
030229 sport sciences
Salida cardíaca
Endocrinology
Blood pressure
Resistencia vascular
Vascular Resistance
business
Zdroj: RUIdeRA. Repositorio Institucional de la UCLM
instname
ISSN: 1439-6327
1439-6319
DOI: 10.1007/s00421-017-3697-7
Popis: PURPOSE: The aim of this study was to determine the effects of high-intensity aerobic interval training (AIT) on exercise hemodynamics in metabolic syndrome (MetS) volunteers. METHODS: Thirty-eight, MetS participants were randomly assigned to a training (TRAIN) or to a non-training control (CONT) group. TRAIN consisted of stationary interval cycling alternating bouts at 70-90% of maximal heart rate during 45 min day-1 for 6 months. RESULTS: CONT maintained baseline physical activity and no changes in cardiovascular function or MetS factors were detected. In contrast, TRAIN increased cardiorespiratory fitness (14% in VO2PEAK; 95% CI 9-18%) and improved metabolic syndrome (-42% in Z score; 95% CI 83-1%). After TRAIN, the workload that elicited a VO2 of 1500 ml min-1 increased 15% (95% CI 5-25%; P < 0.001). After TRAIN when subjects pedaled at an identical submaximal rate of oxygen consumption, cardiac output increased by 8% (95% CI 4-11%; P < 0.01) and stroke volume by 10% (95% CI, 6-14%; P < 0.005) being above the CONT group values at that time point. TRAIN reduced submaximal exercise heart rate (109 ± 15-106 ± 13 beats min-1; P < 0.05), diastolic blood pressure (83 ± 8-75 ± 8 mmHg; P < 0.001) and systemic vascular resistances (P < 0.01) below CONT values. Double product was reduced only after TRAIN (18.2 ± 3.2-17.4 ± 2.4 bt min-1 mmHg 10-3; P < 0.05). CONCLUSIONS: The data suggest that intense aerobic interval training improves hemodynamics during submaximal exercise in MetS patients. Specifically, it reduces diastolic blood pressure, systemic vascular resistances, and the double product. The reduction in double product, suggests decreased myocardial oxygen demands which could prevent the occurrence of adverse cardiovascular events during exercise in this population. Ministrio de Economía y Competitividad (DEP-2014-52930-R) 2.401 JCR (2017) Q2, 27/81 Sport sciences; Q3, 45/83 Physiology 1.186 SJR (2017) Q1, 435/2878 Medicine (miscellaneous), 37/285 Orthopedics and Sports Medicine, 80/554 Public Health, Environmental and Occupational Health, 29/127 Sports Science; Q2, 36/107 Physiology (medical) No data IDR 2017 UEM
Databáze: OpenAIRE
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