n International SportMed Journal - Blood pressure responses and heart rate variability after resistance exercise with different intensities and same workload : original research article

Volume 12, Issue 2
  • ISSN : 1528-3356



: There is little information about heart rate variability (HRV) in the context of studies involving post-exercise hypotension, principally resistance exercise.

: This study aimed to verify the responses of blood pressure (BP) after resistance exercise performed at three different intensities with the same volume.
: The type of study design used to answer the question was transversal.
: Ten non-hypertensive men randomly performed three sessions of resistance exercises at different intensities (40, 60 and 80% 1RM) with the same volume. BP and heart rate variability (HRV) were monitored for 60min after interventions.
: The results were expressed as mean and standard deviation. The diastolic BP remained low in the average monitoring period in the intensities of 40% (rest=68.2±7.5; post=56.5±6.5 mmHg; =0.0001), 60% (rest=68.0±5.0; post=56.6±6.3 mmHg; =0.0001) and 80% 1RM (rest=69.6±8.0; post=58.8±7.4 mmHg; =0.0001). The same was true for the mean BP at the intensities of 40% (rest=86.5±5.8; post=76.1±6.3 mmHg; =0.0001), 60% (rest=86.3±5.6; post=76.8±7.1 mmHg; =0.0001) and 80% 1RM (rest=87.6±5.4; post=78.6±7.01 mmHg; =0.0001). Although the average systolic BP of the post-exercise monitoring period was very similar across exercise intensities, these values were statistically lower than those at rest only at 40% 1RM (rest=123.2±8.9; post=115.3±10.0 mmHg; =0.04). HRV showed greater sympathetic activation after the exercise session regardless of intensity.
: There aren't differences in the responses of BP after exercise at different intensities and same workload. Thus resistance exercise at any of these three intensities can promote BP reductions in non-hypertensive individuals. The execution of resistance exercise at light intensities may be interesting for exercise prescription in non-hypertensive subjects, because there are sufficient strength gains related to health, besides providing greater adherence to exercise practice.

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