title: The acute muscular response to blood flow-restricted exercise with very low relative pressure.
abstract: To investigate the acute responses to blood flow-restricted (BFR) exercise across low, moderate and high relative pressures. Muscle thickness, maximal voluntary contraction (MVC) and electromyography (EMG) amplitude were assessed following exercise with six different BFR pressures: 0%, 10%, 20%, 30%, 50% and 90% of arterial occlusion pressure (AOP). There were differences between each time point within each condition for muscle thickness, which increased postexercise [+0·47 (0·40, 0·54) cm] and then trended towards baseline. For MVC, higher pressures resulted in greater decrements than lower pressures [e.g. 10% AOP: -20·7 (-15·5, -25·8) Nm versus 90% AOP: -24 (-19·1, -28·9) Nm] postexercise. EMG amplitude increased from the first three repetitions to the last three repetitions within each set. When using a common BFR protocol with 30% 1RM, applying BFR does not seem to augment acute responses over that of exercise alone when exercise is taken to failure.
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Matthew B
authors.initials: MB
authors.lastname: Jessee
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Kevin T
authors.initials: KT
authors.lastname: Mattocks
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Samuel L
authors.initials: SL
authors.lastname: Buckner
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: J Grant
authors.initials: JG
authors.lastname: Mouser
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Brittany R
authors.initials: BR
authors.lastname: Counts
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Scott J
authors.initials: SJ
authors.lastname: Dankel
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Gilberto C
authors.initials: GC
authors.lastname: Laurentino
authors.affiliation: Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA.
authors.forename: Jeremy P
authors.initials: JP
authors.lastname: Loenneke
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D004576:Electromyography; D005260:Female; D006801:Humans; D006984:Hypertrophy; D007511:Ischemia; D007537:Isometric Contraction; D008297:Male; D018763:Muscle Fatigue; D018482:Muscle, Skeletal / Q000098:blood supply* / Q000000981:diagnostic imaging; D012039:Regional Blood Flow; D055070:Resistance Training / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors; D014111:Tourniquets; D014463:Ultrasonography; D034941:Upper Extremity; D055815:Young Adult
keywords: EMG amplitude; muscle hypertrophy; muscle thickness; occlusion training, arterial occlusion