Feasibility and Acceptability of Isometric Exercise and Lifestyle Change for the Management of Hypertension

Inclusion Criteria: * Diagnosis of Arterial Hypertension (AH) in accordance with NICE guidelines. * Under pharmacological treatment for AH with antihypertensive drug, type and dose maintained for the previous four months. * Blood Pressure with values \<180 and \<110 mmHg for office systolic and diastolic BP, respectively. * Not currently engaged in any structured or supervised exercise training programme, including resistance, aerobic, or isometric exercise, defined as planned exercise performed ≥2 times per week at moderate or greater intensity, for at least three months prior to enrolment. Participants may engage in habitual physical activity; however, those meeting current physical activity recommendations (≥150 min·week-¹ of moderate-intensity or ≥75 min·week-¹ of vigorous-intensity activity, or an equivalent combination) will be excluded. Physical activity levels will be ascertained using the International Physical Activity Questionnaire (IPAQ). * Written informed consent provided. Exclusion Criteria: * Body mass index \>35 kg/m2. * Presence of cardiovascular disease beyond hypertension. * Known orthopaedic, musculoskeletal, or neurological conditions that restrain isometric exercise execution. * Presence of secondary hypertension * Inability to follow verbal instructions or complete study protocol