Key result
Resistance training at 50% of maximum estimated repetition promoted greater post-exercise hypotension than 75% intensity in mild hypertensive men (SBP p=0.022 for trained, p=0.001 for untrained).
Why the study?
Does resistance training at 50% versus 75% of maximum estimated repetition reduce blood pressure in mild hypertensive men?
Does resistance training at 50% versus 75% of maximum estimated repetition reduce blood pressure in mild hypertensive men?
Lower intensity resistance training (50% of maximum repetition) is more effective than higher intensity (75%) at promoting post-exercise hypotension in men with mild hypertension.
May favor 50% over 75% intensity RT for acute BP reduction in mild hypertension; hypothesis-generating pending RCT confirmation.
Background: The effect of resistance training (RT) on the behavior of blood pressure (BP), heart rate (HR) and double product (DP) is strongly related to the characteristics of exercise and is inconsistent with hypertensive individuals. Objectives: To compare the acute and late cardiovascular response in sessions of 50% and 75% of maximum estimated repetition in grade-1 hypertensive individuals. Methods: For 24 hours, the study analyzed systolic blood pressure (SBP) and diastolic blood pressure (DBP) in 14 mild hypertensive men, trained (TG) and untrained (UG), under protocols of 75% and 50% on maximum estimated repetition. The level of cardiovascular stress in eight exercises for the two intensities mentioned was concomitantly observed. Results: In the TG, the variable SBP showed differences between the protocol of lower intensity compared to the other, 50% with control (p=0.028) and 50% to 75% (p=0.022), and DBP differed only in the protocols of 50% with control (p=0.024). In the UG, the difference occurred in all protocols, as well in SBP [50% and control (p=<0.0001); 75% and control (p=0.039); and 50% and 75% (p=0.001)] as in DBP [50% and control (p=0.002); 75% and control (p=0.002); and 50% and 75% (p=0.002)]. On cardiovascular stress, the exercises seated row, leg press in the TG and high row, leg curl and abdominal crunch in the UG differed in both protocols. Conclusion: The results indicate safety in RT in mild hypertension men. It became evident that the lower intensity protocol showed higher efficiency in promoting post-exercise hypotension.
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Reis et al. (2015) studied Mild hypertension (n=14). Resistance training vs. Control was evaluated on Systolic and diastolic blood pressure. Resistance training at 50% of maximum estimated repetition promoted greater post-exercise hypotension than 75% intensity in mild hypertensive men (SBP p=0.022 for trained, p=0.001 for untrained).
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