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We studied 62 young healthy volunteers, mostly students, with the mean age of 23,7 years. They were devided into a group with positive family history of hypertension (group A, N=27) and a group with negative family history of hypertension (group B, N=35). The groups were matched for number, sex and age of subjects. Previous studies indicated that hypertension is a genetically determinated disease. In subjects with family history of raised blood pressure, neurovegetative disturbances, e.g. increased sympathetic tone, can be predicted already in the initial stage when they are still normotensive. Subjects in group A showed higher blood pressure and heart rate measured at rest than individuals in group B, yet the differences were not statistically significant. On hand grip test, group A had significantly higher systolic, diastolic and mean blood pressure than group B. Group A reacted to the mathematical mental stress by significantly higher increase in mean blood pressure (p<0,05) than group B. acute exposure to noise produced greater elevation of diastolic blood pressure in group A, yet the difference between the groups was not statistically significant. Hence, it can be concluded that because of its poor predictive value, acute exposure to noise is an inappropriate stress test for identifying subjects at risk of developing hypertension.