Background: Arterial hypertension is among the leading causes of mortality worldwide.
The primary non-pharmacological management of arterial hypertension is isometric grip training,
which has shown better results than pharmacological methods; however, it has not been thoroughly
studied in large muscle groups.
Objective: This study compared the pressor response of isometric exercise training at different intensities,
in large groups versus small muscle groups, in sedentary eutrophic and overweight people
aged 20-29 years.
Methods: A sample of 93 people (57 people with excess weight and 36 people of normal weight)
participated in isometric training for 5 days, subdivided into leg press vs. handgrip strength, with
different intensities for each subgroup (30 and 50%, 1 RM). Before and after the 5 training days, Heart
Rate Variability (HRV) and systolic and diastolic blood pressure, BSBP-BDBP and PSBP-PDBP,
were measured to evaluate the state of sympathetic activation at rest and pressor response.
Results: Changes with significant differences (p <0.05) in terms of pre-post training measurements
in the eutrophic group were the BSBP-PSBP variables at 30% and 50% 1 RM for manual isometric
grip strength. In the excess weight group, the only significant change was the PSBP variable in
handgrip strength at 30% 1 RM. It should be noted that in all cases, blood pressure values reduced.
Conclusion: Isometric strength exercises in large and small muscle groups show a tendency to reduce
blood pressure values; however, the isometric handgrip force at 30% 1 RM shows statistically
significant reductions in blood pressure values.