Key result
High lower-body compression (28.8±8.3 mmHg) decreased calf muscle and superficial vessel area (p<0.01) and increased cardiac output and stroke volume (p<0.05) in healthy individuals at rest.
Why the study?
The study sought to evaluate morphological changes of the lower limb and associated hemodynamic responses to different lower-body compression pressures in physically active, healthy individuals at rest.
Do different lower-body compression pressures alter lower limb morphology and hemodynamic responses in physically active healthy individuals at rest?
Do different lower-body compression pressures alter lower limb morphology and hemodynamic responses in physically active healthy individuals at rest?
p-value: p=<0.05
High lower-body compression induces leg morphological changes and increases cardiac output and stroke volume in healthy individuals at rest.
Should not change practice in healthy adults; leaves open hemodynamic effects of compression during exercise or in clinical populations.
This study evaluated the morphological changes of the lower limb and associated hemodynamic responses to different lower-body compression pressures (COMPs) in physically active, healthy individuals at rest. Each of the 32 participants underwent three trials with three different degrees of lower-body compression applied: “Low” (2.2±1.4 mmHg), “Medium” (12.9±3.9 mmHg), and “High” (28.8±8.3 mmHg). In each COMP, a cross-sectional area of leg muscles (CSAmuscle), subcutaneous fat (CSAfat), superficial vessels (SupV), deep arteries (DA), and deep veins (DV) at the calf, knee, and thigh levels were measured using magnetic resonance imaging (MRI). Additionally, blood pressure (BP), heart rate (HR), cardiac output (CO), stroke volume (SV), and systemic vascular resistance (SVR) were measured using Doppler ultrasound (USCOM®). With High COMP, calf CSAmuscle and SupV were smaller (p<0.01), whereas DA and DV were larger (p<0.05). Calf CSAfat, however, was similar among all COMPs. There were no major changes in CSAmuscle and CSAfat at knee and thigh levels. CO (3.2±0.9 L/min) and SV (51.9±16.4 mL) were higher (p<0.05) only with High COMP, but other hemodynamic variables showed no significant changes across different COMPs. The High COMP at the lower limb induces leg morphological changes and increases associated hemodynamic responses of physically active healthy individuals at rest.
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Lee et al. (2019) studied Healthy (n=32). Lower-body compression vs. Low and Medium compression was evaluated on Morphological changes of the lower limb and associated hemodynamic responses (p=<0.05). High lower-body compression (28.8±8.3 mmHg) decreased calf muscle and superficial vessel area (p<0.01) and increased cardiac output and stroke volume (p<0.05) in healthy individuals at rest.
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