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Broad evidence indicates that hypertensive response to exercise (HRE) is associated with future hypertension (aHT) at rest and cardiovascular morbidity and mortality. Nevertheless, a consensus on the definition of HRE is lacking and the comparability of the available data is difficult due to a wide variation of definitions used. This review aims to harmonize currently available definitions of HRE in normotensive and athletic populations and to propose a generally valid cut-off applicable in everyday clinical practice. A literature search on PubMed and Embase was conducted to assemble and analyze the most recent data. Various definitions of HRE were identified and linked with future cardiovascular diseases. Forty-one studies defined HRE at a peak systolic blood pressure (SBP) above or equal to 200 mmHg in men and 25 studies for 190 mmHg in women. Peak diastolic blood pressure (DBP) between 90 and 110 mmHg was reported in 14 studies, relative DBP increase in four. Eight studies defined HRE as SBP between 160 and 200 mmHg at 100 watts. 17 studies performed submaximal exercise testing, while two more looked at BP during recovery. A plethora of other definitions was identified. In athletes, total workload and average blood pressure during exercise were considerably higher. Based on the presented data, the most commonly used definition of HRE at peak exercise is 210/105 mmHg for men, 190/105 mmHg for women, and 220/210 mmHg for athletes. Furthermore, a uniform exercise testing protocol, a position statement by leading experts to unify the definition of HRE, and prospective studies are warranted to confirm these cut-offs and the associated morbidity and mortality.

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