Key result
Low-intensity training with blood flow restriction promoted less pronounced physiological responses, such as lower heart rate (MD=28.9 bpm; p<0.00001), but greater pain perception than HIT.
Why the study?
The study was conducted to determine the acute physiological and perceptual responses of low-intensity training with blood flow restriction compared to high-intensity aerobic training.
Does low-intensity training with blood flow restriction alter acute physiological and perceptual responses compared to high-intensity aerobic training in healthy young individuals?
Meta-Analysis
Does low-intensity training with blood flow restriction alter acute physiological and perceptual responses compared to high-intensity aerobic training in healthy young individuals?
Mean Difference: 28.9
p-value: p=<0.00001
Low-intensity training with blood flow restriction promotes less pronounced acute physiological responses than high-intensity aerobic training, but with a greater perception of pain.
HIT yields substantially higher heart rates than LI-BFR; confirms greater acute cardiovascular stimulus and extends RCT meta-analysis for training comparisons.
The purpose was to determine the effect low-intensity training with blood flow restriction (LI-BFR) versus high-intensity aerobic training (HIT) on acute physiological and perceptual responses. The Cumulative Index to Nursing and Allied Health Literature, National Library of Medicine, Scopus, SPORTDiscus and Web of Science databases and the reference list of eligible studies were consulted to identify randomized experimental studies, published until July 4, 2022, that analyzed physiological or perceptual responses between LI-BFR versus HIT in healthy young individuals. Mean difference (MD) and standardized mean difference (SMD) were used as effect estimates and random effects models were applied in all analyses. Twelve studies were included in this review. During exercise sessions, HIT promoted higher values of heart rate (MD=28.9 bpm; p<0.00001; I 2 =79%), oxygen consumption (SMD=4.01; p<0.00001; I 2 =83%), ventilation (MD=48.03 l/min; p=0.0001; I 2 =97%), effort (SMD=1.54; p=0.003; I 2 =90%) and blood lactate (MD=3.85 mmol/L; p=0.002; I 2 =97%). Perception of pain/discomfort was lower in HIT (SMD=−1.71; p=0.04; I 2 =77.5%). In conclusion, LI-BFR promotes less pronounced physiological responses than HIT but with greater perception of pain.
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Queirós et al. (2023) conducted a meta-analysis in Healthy young individuals. Low-intensity training with blood flow restriction (LI-BFR) vs. High-intensity aerobic training (HIT) was evaluated on Heart rate (MD 28.9, p=<0.00001). Low-intensity training with blood flow restriction promoted less pronounced physiological responses, such as lower heart rate (MD=28.9 bpm; p<0.00001), but greater pain perception than HIT.
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