Key result
A single bout of low-intensity resistance exercise with blood-flow restriction resulted in similar acute increases in pulse-wave velocity and blood pressure compared to traditional resistance exercise (all p>0.05).
Why the study?
To compare the acute effect of a single bout of traditional resistance exercise versus low-intensity resistance exercise with moderate blood-flow restriction on arterial stiffness in older people with slow gait speeds.
Does a single bout of low-intensity resistance exercise with blood flow restriction affect arterial stiffness compared to traditional resistance exercise in older people with slow gait speed?
RCT (n=17)
Does a single bout of low-intensity resistance exercise with blood flow restriction affect arterial stiffness compared to traditional resistance exercise in older people with slow gait speed?
p-value: p=>0.05
A single bout of low-intensity resistance exercise with blood flow restriction produces similar acute increases in arterial stiffness and hemodynamic parameters as traditional resistance exercise in older adults with slow gait speed, without acute adverse events.
Acute LIRE-BFR and TRE produce similar transient PWV rises in frail older adults; extends acute safety data but leaves long-term vascular effects open.
Purpose: Low-intensity resistance exercise with moderate blood-flow restriction (LIRE-BFR) is a new trending form of exercises worldwide. The purpose of this study was to compare the acute effect of a single bout of traditional resistance exercise (TRE) and LIRE-BFR on arterial stiffness in older people with slow gait speeds. Methods: This was a randomized, controlled clinical study. Seventeen older adults (3 men; 14 women; 82 ± 5 years old) completed a session of TRE (n = 7) or LIRE-BFR (n = 10). At baseline and after 60 min post-exercise, participants were subject to blood pressure measurement, heart rate measurements and a determination of arterial stiffness parameters. Results: There was no significant difference between the TRE and LIRE-BFR group at baseline. Pulse-wave velocity increased in both groups (p < 0.05) post-exercise with no between-group differences. Both exercise modalities did not produce any adverse events. The increase in systolic blood pressure, pulse pressure, augmentation pressure and pulse wave velocity (all p > 0.05) were similar after both TRE and LIRE-BFR. Conclusion: TRE and LIRE-BFR had similar responses regarding hemodynamic parameters and pulse-wave velocity in older people with slow gait speed. Long-term studies should assess the cardiovascular risk and safety of LIRE-BFR training in this population.
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Amorim et al. (2022) conducted an RCT in Slow gait speed (n=17). Low-intensity resistance exercise with moderate blood-flow restriction (LIRE-BFR) vs. Traditional resistance exercise (TRE) was evaluated on Arterial stiffness parameters including pulse-wave velocity (p=>0.05). A single bout of low-intensity resistance exercise with blood-flow restriction resulted in similar acute increases in pulse-wave velocity and blood pressure compared to traditional resistance exercise (all p>0.05).
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