Essential hypertension;  Exercise;  High blood pressure;  Training

Hypertension is defined as a systolic blood pressure of ≥140 mmHg or a diastolic blood pressure of ≥90 mmHg, or both, based on multiple blood pressure measurements, taken on separate occasions, in the sitting position, by use of a mercury sphygmomanometer or another calibrated device [1]. Hypertension is an important health problem because its prevalence amounts to ∼25% in population-based studies and is associated with increased incidence of all-cause and cardiovascular mortality, sudden death, stroke, coronary heart disease, heart failure, atrial fibrillation, peripheral arterial disease, and renal insufficiency. In addition, hypertension is often associated with other cardiovascular risk factors such as obesity, dyslipidemia, and glucose intolerance and causes target organ damage such as left ventricular hypertrophy, microalbuminuria, and vascular stiffness. Therefore, high blood pressure should...