The Cardiovascular and Perceptual Response to Very Low Load Blood Flow Restricted Exercise

Matthew B Jessee; Scott J Dankel; Samuel L Buckner; J. Grant Mouser; Kevin T Mattocks; Jeremy P Loenneke

doi:10.1055/s-0043-109555

International Journal of Sports Medicine, Inhaltsverzeichnis

Int J Sports Med 2017; 38(08): 597-603
DOI: 10.1055/s-0043-109555

Physiology & Biochemistry

The Cardiovascular and Perceptual Response to Very Low Load Blood Flow Restricted Exercise

Matthew B Jessee

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

,

Scott J Dankel

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

,

Samuel L Buckner

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

,

J. Grant Mouser

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

,

Kevin T Mattocks

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

,

Jeremy P Loenneke

¹Kevser Ermin Applied Physiology Laboratory, University of Mississippi, Health, Exercise Science, and Recreation Management, University, United States

› Institutsangaben

Abstract

This study sought to compare cardiovascular and perceptual responses to blood flow restriction (BFR) exercise using various pressure and load combinations. Fourteen participants completed four sets of BFR elbow flexion using 10, 15 and 20% 1RM with 40 and 80% arterial occlusion pressure (AOP). AOP was measured before and after exercise. Perceived exertion (RPE) and discomfort were assessed before exercise and after each set. Data presented as mean (95% CI), except for RPE and discomfort: 25^th, 50^th, 75^th percentiles. AOP increased post-exercise (p<0.001) with larger magnitudes seen when increasing load and pressure (p<0.001) [e. g., 10/40 ΔAOP: 21 (10, 32) mmHg vs. 20/80 ΔAOP: 62 (45, 78) mmHg], which also augmented RPE (p<0.001) [e. g., 4th set 10/40: (7, 8.5, 12) vs. 4th set 20/80: (12.75, 15.5, 17.25)] and discomfort (p<0.001) [e. g., 4^th set 10/40: (0.75, 2, 4.25) vs. 4^th set 20/80: (4.25, 6, 8,)]. Volume increased via greater loads (p<0.001), and participants only reached failure during 20% 1RM conditions [20/40: 74 (74, 75) repetitions; 20/80: 71 (68, 75) repetitions]. When performing BFR exercise with very low loads the magnitudes of the cardiovascular and perceptual responses are augmented by increasing the load and by applying a higher relative pressure.

Key words

occlusion training - vascular occlusion - ischemic exercise - arterial occlusion

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References
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