Key result
Blood flow-restricted resistance exercise yields lower SBP, DBP, and HR versus high- and low-intensity exercise.
Why the study?
Does blood flow-restricted resistance exercise promote a different hemodynamic response compared to high-intensity and low-intensity resistance exercise in men?
Does blood flow-restricted resistance exercise promote a different hemodynamic response compared to high-intensity and low-intensity resistance exercise in men?
Blood flow-restricted resistance exercise to muscular failure elicits a lower hemodynamic response (blood pressure and heart rate) compared to traditional high- and low-intensity resistance exercise.
May attenuate acute hemodynamic stress during resistance exercise; leaves open translation to chronic outcomes or clinical populations.
The aim of the present study was to compare hemodynamic responses between blood flow-restricted resistance exercise (BFR-RE), high-intensity resistance exercise (HI-RE) and low-intensity resistance exercise (LI-RE) performed to muscular failure. 12 men (age: 20±3 years; body mass: 73.5±9 kg; height: 174±6 cm) performed 4 sets of leg press exercises using BFR-RE (30% of 1-RM), HI-RE (80% of 1-RM) and LI-RE (30% of 1-RM) protocols. Systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR), stroke volume (SV), cardiac output (CO) and total peripheral vascular resistance (TPR) were measured on a beat-to-beat continuous basis by a noninvasive photoplethysmographic arterial pressure device. The HI-RE and LI-RE showed higher values (P<0.05) in all of the sets than the BFR-RE for SBP, DBP, HR. Additionally, HI-RE showed higher SBP (4th set) and DBP (all sets) (P<0.05) values than the LI-RE. However, the SV, CO and TPR showed significantly greater values for LI-RE compared to HI-RE and BFR-RE (P<0.05). In conclusion, the results of this study indicate that the BFR-RE promotes a lower hemodynamic response compared to the HI-RE and LI-RE performed to muscular failure.
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Libardi et al. (2016) studied this question. Blood flow-restricted resistance exercise (BFR-RE) vs. High-intensity (80% 1-RM) and low-intensity (30% 1-RM) resistance exercise was evaluated on Hemodynamic responses (SBP, DBP, HR, SV, CO, TPR) (p=<0.05). Blood flow-restricted resistance exercise promoted lower systolic and diastolic blood pressure and heart rate compared to high- and low-intensity resistance exercise to muscular failure (P<0.05).
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