ArticleFrontiers in physiology2026
Influence of blood flow restriction cuff width on acute metabolic, perceptual, and landing responses to low-load resistance exercise in trained long jump athletes.
Article in Frontiers in physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Blood flow restriction (BFR) is used with low-load resistance exercise, but acute responses may depend on cuff width when pressure is prescribed relative to arterial occlusion pressure (AOP). Aim: To compare acute metabolic, perceptual, and landing-related responses among No-BFR, 6-cm BFR, and 12-cm BFR conditions in trained male long-jump athletes. Methods: Twenty-two athletes completed the three conditions in a randomized crossover design. Participants performed Smith-machine half squats at 30% of one-repetition maximum using four sets of 30, 15, 15, and 15 repetitions with 30-s inter-set rest. Cuffs were maintained at 40% of cuff-specific AOP. Blood lactate was measured before, immediately after, and 5 min after exercise. Rating of perceived exertion (RPE) and numerical pain rating scale (NPRS) scores were recorded after each set. Drop-jump (DJ) height, loading rate, and center-of-pressure (COP) sample entropy were measured before and after exercise. Results: BFR produced higher blood lactate, RPE, and NPRS than No-BFR, particularly during later assessments. Significant condition-by-time/set interactions were observed for blood lactate (F(2.24,47.12)=14.101, p<0.001, ηp²=0.402), NPRS (F(4.34,91.04)=4.839, p=0.001, ηp²=0.180), DJ height (F(1.76,37.04)=20.163, p<0.001, ηp²=0.490), loading rate (F(1.87,39.31)=3.850, p=0.032, ηp²=0.155), and COP sample entropy (F(1.51,31.65)=7.521, p=0.004, ηp²=0.264); the RPE interaction was not significant (p = 0.094). Following BFR, DJ height decreased, whereas loading rate and COP sample entropy increased. The 12-cm condition generally produced the largest responses, although direct cuff-width differences were not uniform. Conclusions: Cuff width influenced acute metabolic, perceptual, and post-exercise landing responses during low-load BFR exercise. These acute findings do not establish superior long-term training adaptations.
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