title: Hemodynamic Responses to Blood Flow Restriction and Resistance Exercise to Muscular Failure.
abstract: The aim of the present study was to compare hemodynamic responses between blood flow-restricted resistance exercise (BFR-RE), high-intensity resistance exercise (HI-RE) and low-intensity resistance exercise (LI-RE) performed to muscular failure. 12 men (age: 20±3 years; body mass: 73.5±9 kg; height: 174±6 cm) performed 4 sets of leg press exercises using BFR-RE (30% of 1-RM), HI-RE (80% of 1-RM) and LI-RE (30% of 1-RM) protocols. Systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR), stroke volume (SV), cardiac output (CO) and total peripheral vascular resistance (TPR) were measured on a beat-to-beat continuous basis by a noninvasive photoplethysmographic arterial pressure device. The HI-RE and LI-RE showed higher values (P<0.05) in all of the sets than the BFR-RE for SBP, DBP, HR. Additionally, HI-RE showed higher SBP (4thset) and DBP (all sets) (P<0.05) values than the LI-RE. However, the SV, CO and TPR showed significantly greater values for LI-RE compared to HI-RE and BFR-RE (P<0.05). In conclusion, the results of this study indicate that the BFR-RE promotes a lower hemodynamic response compared to the HI-RE and LI-RE performed to muscular failure.
authors.affiliation: Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Cleiton Augusto
authors.initials: CA
authors.lastname: Libardi
authors.affiliation: Cardiovascular Physiotherapy Laboratory, Department of Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Aparecida Maria
authors.initials: AM
authors.lastname: Catai
authors.affiliation: Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Maiara
authors.initials: M
authors.lastname: Miquelini
authors.affiliation: Cardiopulmonary Physiotherpy Laboratory, Department of Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Audrey
authors.initials: A
authors.lastname: Borghi-Silva
authors.affiliation: Cardiovascular Physiotherapy Laboratory, Department of Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Vinicius
authors.initials: V
authors.lastname: Minatel
authors.affiliation: Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Ieda Fernanda
authors.initials: IF
authors.lastname: Alvarez
authors.affiliation: Cardiovascular Physiotherapy Laboratory, Department of Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
authors.forename: Juliana Cristina
authors.initials: JC
authors.lastname: Milan-Mattos
authors.affiliation: School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Hamilton
authors.initials: H
authors.lastname: Roschel
authors.affiliation: School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Valmor
authors.initials: V
authors.lastname: Tricoli
authors.affiliation: School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Ugrinowitsch
mesh_terms: D000293:Adolescent; D001794:Blood Pressure; D003250:Constriction; D018592:Cross-Over Studies; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D008297:Male; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000098:blood supply* / Q000502:physiology*; D012039:Regional Blood Flow; D055070:Resistance Training; D013318:Stroke Volume; D014655:Vascular Resistance; D055815:Young Adult