Key result
Blood flow restricted exercise with a narrow cuff resulted in less discomfort than a wide cuff inflated to the same relative pressure (39.3 vs 42.5; median δ -0.388, 95% CI -0.670 to -0.109).
Why the study?
The study was conducted to investigate how cuff width, sex, and applied pressure influence perceived discomfort associated with blood flow restriction at rest and following exercise.
Does cuff width and applied pressure affect perceived discomfort during blood flow restricted arm exercise?
Does cuff width and applied pressure affect perceived discomfort during blood flow restricted arm exercise?
Blood flow restricted exercise with a narrow cuff results in less discomfort than a wider cuff inflated to the same relative pressure, though this difference is not observed at rest.
Answers are grounded in this paper and cite their sources.
Narrow cuffs may reduce BFR arm exercise discomfort; leaves open optimal selection for adherence or outcomes.
OBJECTIVE: To investigate the influence of cuff width, sex, and applied pressure on the perceived discomfort associated with blood flow restriction at rest and following exercise. APPROACH: Experiment 1 (n = 96) consisted of four sets of biceps exercise to failure with a narrow and wide cuff inflated to the same relative pressure. Experiment 2 (n = 87) compared two wide cuffs, one of which was inflated to a relative pressure obtained from a narrow cuff. Experiment 3 (n = 50) compared the discomfort of wide and narrow cuffs at rest. Effects are presented as median δ (95% credible interval). MAIN RESULTS: There was no sex effect for any variable of interest. In Experiment 1, the narrow cuff resulted in less discomfort than the wide cuff (39.3 versus 42.5; median δ -0.388 (-0.670, -0.109)). Participants also rated the narrow cuff as more preferable. Experiment 2 found that a wide cuff inflated to a narrow cuffs pressure resulted in greater discomfort than a wide cuff (44 versus 40.9; median δ: 0.420 (0.118, 0.716)). Experiment 3 found no difference between cuff widths. SIGNIFICANCE: Blood flow restricted exercise with a narrow cuff results in less discomfort than a wider cuff inflated to the same relative pressure. This effect is not observed at rest and suggests that the wide cuff produces a differential environment compared to a narrow cuff when combined with exercise. Additionally, applying a pressure meant for a narrow cuff to a wide cuff augments the applied pressure and subsequent discomfort to blood flow restricted exercise.
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Spitz et al. (2019) studied Blood flow restricted arm exercise (n=233). Narrow cuff vs. Wide cuff was evaluated on Perceived discomfort associated with blood flow restriction following exercise (median δ -0.388, 95% CI -0.670 to -0.109). Blood flow restricted exercise with a narrow cuff resulted in less discomfort than a wide cuff inflated to the same relative pressure (39.3 vs 42.5; median δ -0.388, 95% CI -0.670 to -0.109).
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