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Bfr training

Hunter Bennett, Flynn Slattery
Bennett, H and Slattery, F. Effects of blood flow restriction training on aerobic capacity and performance: A systematic review. J Strength Cond Res XX(X): 000-000, 2018-Blood flow restriction (BFR) is a novel training method that can elicit training adaptations at low training intensities. Recent research has aimed to determine the effect of aerobic exercise with BFR on aerobic fitness and performance, with conflicting results. This review aimed to systematically identify and assess studies that have combined BFR with aerobic exercise in humans, establishing its effect on aerobic fitness and performance...
December 7, 2018: Journal of Strength and Conditioning Research
Vida Naderi-Boldaji, Siyavash Joukar, Ali Noorafshan, Mohammad-Ali Bahreinipour
The present study was conducted to evaluate the effect of blood flow restriction (BFR) training on cardiac resistance to isoproterenol (ISO) induced heart injury in old rats and examined the hypothesis that BFR training may interfere with age-associated impairment of mitochondria by the inhibitory phosphorylation of GSK-3β at Ser9. Old male Wistar rats were divided into the following six groups: CTL (control), ISO (isoproterenol-treated), Sh + ISO (sham-operated plus ISO), BFR + ISO (blood flow restriction plus ISO), Sh-Ex + ISO (sham-operated subjected to exercise and ISO), and BFR-Ex + ISO (blood flow restriction along with exercise and ISO)...
November 7, 2018: Cardiovascular Toxicology
Rubens Vinícius Letieri, Ana Maria Teixeira, Guilherme Eustáquio Furtado, Carminda Goersch Lamboglia, Jordan L Rees, Beatriz Branquinho Gomes
OBJECTIVE: The objective of this study was to compare the effect of 16 weeks of resistance training using different occlusion pressures, followed by 6 weeks of detraining on the muscular strength levels of older women. METHODS: This randomized-controlled trial included 56 recreationally active women (68.8 ± 5.09 years), randomized into 5 groups: 1) Low-intensity with blood flow restriction "High" (LI + BFR_H): with higher occlusion pressure, 2) Low-intensity with blood flow restriction "Low" (LI + BFR_L): with lower occlusion pressure, 3) High-intensity (HI), 4) Low-intensity (LI), and 5) Control Group (CG)...
November 1, 2018: Experimental Gerontology
Matthew B Jessee, Samuel L Buckner, J Grant Mouser, Kevin T Mattocks, Scott J Dankel, Takashi Abe, Zachary W Bell, John P Bentley, Jeremy P Loenneke
An inability to lift loads great enough to disrupt muscular blood flow may impair the ability to fatigue muscles, compromising the hypertrophic response. It is unknown what level of blood flow restriction (BFR) pressure, if any, is necessary to reach failure at very low-loads [i.e., 15% one-repetition maximum (1RM)]. The purpose of this study was to investigate muscular adaptations following resistance training with a very low-load alone (15/0), with moderate BFR (15/40), or with high BFR (15/80), and compare them to traditional high-load (70/0) resistance training...
2018: Frontiers in Physiology
Fabrício Eduardo Rossi, Marcelo Conrado de Freitas, Nelo Eidy Zanchi, Fábio Santos Lira, Jason M Cholewa
Blood flow restriction (BFR) combined with low-intensity strength training has been shown to increase skeletal muscle mass and strength in a variety of populations. BFR results in a robust metabolic stress which is hypothesized to induce muscle growth via increased recruitment of fast-twitch muscle fibers, a greater endocrine response, and/or enhancing the cellular swelling contribution to the hypertrophic process. Following exercise, neutrophils are the first immune cells to initiate the tissue remodeling process via several mechanisms including an increased production of cytokines and recruitment of monocytes/macrophages, which facilitate the phagocytosis of foreign particles, the differentiation of myoblasts, and the formation of new myotubes...
2018: Frontiers in Physiology
Emma A Mitchell, Neil Richard William Martin, Mark C Turner, Conor W Taylor, Richard A Ferguson
Sprint interval training (SIT) combined with post-exercise blood-flow restriction (BFR) is a novel method to increase maximal oxygen uptake (V̇O2max ) in trained individuals, and also provides a potent acute stimulus for angiogenesis and mitochondrial biogenesis. The efficacy to enhance endurance performance has however yet to be demonstrated. 21 trained male cyclists (V̇O2max ; 62.8 ± 3.7 ml.min-1 .kg-1 ) undertook 4 weeks of SIT (repeated 30 sec maximal sprints) either alone (CON; n = 10) or with post-exercise BFR (n = 11)...
October 18, 2018: Journal of Applied Physiology
Brendan R Scott, Jeremiah J Peiffer, Hannah J Thomas, Kieran J Marston, Keith D Hill
Introduction: Blood flow restriction (BFR) during low-load resistance exercise increases muscle size similarly to high-load training, and may be an alternative to lifting heavy weights for older people at risk of sarcopenia. However, few studies have addressed the safety of such exercise in older people, or whether this is impacted by the actual exercises performed during training. This study aimed to compare the acute hemodynamic and perceptual responses during low-load BFR exercise to unrestricted low-load and high-load exercise in older women, and to determine whether these responses depend on the type of exercise performed...
2018: Frontiers in Physiology
Christoph Centner, Patrick Wiegel, Albert Gollhofer, Daniel König
BACKGROUND: The combination of low-load resistance training with blood flow restriction (BFR) has recently been shown to promote muscular adaptations in various populations. To date, however, evidence is sparse on how this training regimen influences muscle mass and strength in older adults. PURPOSE: The purpose of this systematic review and meta-analysis was to quantitatively identify the effects of low-load BFR (LL-BFR) training on muscle mass and strength in older individuals in comparison with conventional resistance training programmes...
October 10, 2018: Sports Medicine
Alexander Törpel, Fabian Herold, Dennis Hamacher, Notger G Müller, Lutz Schega
Aging is accompanied by a decrease in physical capabilities (e.g., strength loss) and cognitive decline. The observed bidirectional relationship between physical activity and brain health suggests that physical activities could be beneficial to maintain and improve brain functioning (e.g., cognitive performance). However, the exercise type (e.g., resistance training, endurance training) and their exercise variables (e.g., load, duration, frequency) for an effective physical activity that optimally enhance cognitive performance are still unknown...
October 9, 2018: Journal of Clinical Medicine
S D Soligon, M E Lixandrão, Tmpc Biazon, V Angleri, H Roschel, C A Libardi
Low-intensity resistance exercise with blood-flow restriction (BFR) promotes similar adaptations to high-intensity resistance exercise (HI-RE). Interestingly, BFR has been demonstrated to be effective for a wide range of occlusion pressures. However, the occlusion pressure magnitude may alter the psychophysiological stress related to BFR as measured by rating of perceived exertion scale (RPE) and rating of pain. We aimed to compare the RPE and pain levels across different magnitudes of occlusion pressures, promoting new knowledge regarding occlusion pressure on stress related to BFR...
September 1, 2018: Physiology International
Vasileios Korakakis, Rodney Whiteley, Giannis Giakas
OBJECTIVES: To evaluate if application of blood flow restriction (BFR) combined with low-load resistance training (LLRT) would induce significant anterior knee pain (AKP) reduction compared to LLRT alone. DESIGN: Randomised Controlled Trial. SETTING: Institutional physiotherapy clinic. PARTICIPANTS: Forty males suffering from AKP were randomly allocated in the LLRT-BFR or LLRT group. BFR was applied at 80% of complete vascular occlusion...
November 2018: Physical Therapy in Sport
Peter Ladlow, Russell J Coppack, Shreshth Dharm-Datta, Dean Conway, Edward Sellon, Stephen D Patterson, Alexander N Bennett
Background: There is growing evidence to support the use of low-load blood flow restriction (LL-BFR) exercise in musculoskeletal rehabilitation. Purpose: The purpose of this study was to evaluate the efficacy and feasibility of low-load blood flow restricted (LL-BFR) training versus conventional high mechanical load resistance training (RT) on the clinical outcomes of patient's undergoing inpatient multidisciplinary team (MDT) rehabilitation. Study design: A single-blind randomized controlled study. Methods: Twenty-eight lower-limb injured adults completed a 3-week intensive MDT rehabilitation program...
2018: Frontiers in Physiology
Eric M Bugera, Todd A Duhamel, Jason D Peeler, Stephen M Cornish
PURPOSE: Blood flow restricted resistance exercise (BFR-RE) is an emerging hypertrophy training modality. A complete profile of its mechanisms of action has yet to be elucidated. Cytokines are universal intercellular messengers. Recent research has implicated certain cytokines (termed "myokines") in skeletal muscle hypertrophy pathways; however, little research has been conducted on the systemic myokine response to BFR-RE as potential hypertrophic biomarkers. Therefore, this project was conducted to determine any differences in the systemic myokine response between BFR-RE and control conditions...
December 2018: European Journal of Applied Physiology
Matthew J Barnes, Jeremy Fraser, Karl Coley, Blake G Perry
PURPOSE: The purpose of this study was to identify whether post-resistance exercise (REx) blood flow restriction (BFR) can elicit a similar acute training stimulus to that offered by either heavy REx or traditional low-load BFR REx. METHOD: Ten men completed trials with 30% one-repetition maximum (1RM) for 5 sets of 15 repetitions without BFR (30%), with BFR during exercise (30% RD), and with postexercise BFR (30% RP) and at 75% 1RM for 3 sets of 10 repetitions...
December 2018: Research Quarterly for Exercise and Sport
Tina Žargi, Matej Drobnič, Klemen Stražar, Alan Kacin
Surgical ACL reconstruction performed with a tourniquet induces compression and ischemic stress of the quadriceps femoris (QF) muscle which can accelerate postoperative weakness. Given that low-load blood flow restricted (BFR) exercise is potent in enhancing muscle oxygenation and vascular function, we hypothesized that short-term preconditioning with low-load BFR exercise can attenuate QF muscle endurance deterioration in the postoperative period. Twenty subjects undergoing arthroscopic ACL reconstruction performed 5 exercise sessions in the last 8 days prior to surgery...
2018: Frontiers in Physiology
Miguel S Conceição, Edson M M Junior, Guilherme D Telles, Cleiton A Libardi, Alex Castro, André L L Andrade, Patrícia C Brum, Úrsula Urias, Mirian Ayumi Kurauti, José Maria Costa Júnior, Antonio Carlos Boschero, Cláudia R Cavaglieri, Donny M Camera, Mara P T Chacon-Mikahil
INTRODUCTION: Low-intensity endurance training performed with blood flow restriction (ET-BFR) can improve muscle strength, cross-sectional area (CSA) and cardiorespiratory capacity. Whether muscle strength and CSA as well as cardiorespiratory capacity (i.e.:V˙O2max) and underlying molecular processes regulating such respective muscle adaptations are comparable to resistance and endurance training is unknown. PURPOSE: To determine the respective chronic (i.e.: 8 weeks) functional, morphological and molecular responses of ET-BFR training compared to conventional, unrestricted resistance training (RT) and endurance training (ET)...
August 15, 2018: Medicine and Science in Sports and Exercise
Vida Naderi-Boldaji, Siyavash Joukar, Ali Noorafshan, Alireza Raji-Amirhasani, Samaneh Naderi-Boldaji, Mohammad-Abbas Bejeshk
AIMS: Low-intensity aerobic training along with limbs blood flow restriction can improve mass and strength of skeletal muscle, but its effects on aging heart structure and performance is unidentified. We investigated the effects of this model of training on myocardial function, histology and angiogenesis in old male rats. MAIN METHODS: Animals randomly were divided into control (Ctl), sham-operated (Sh), limbs blood flow restriction (BFR), sham-operated plus 10 weeks low intensity treadmill exercise (Sh + Ex), and BFR plus exercise (BFR + Ex) groups...
September 15, 2018: Life Sciences
Peter C Douris, Zachary S Cogen, Helen T Fields, Lauren C Greco, Matthew R Hasley, Christina M Machado, Peter M Romagnuolo, George Stamboulis, Joanne DiFrancisco-Donoghue
Background: Blood flow restriction (BFR) applied during low intensity exercise produces hypertrophy and strength gains equivalent to traditional training. Previous research has shown the positive effects of BFR on younger and older adults. However, the effectiveness of BFR on subjects with Parkinson Disease (PD) has not been investigated. Hypotheses/Purpose: The purpose of the study was to determine the effects of BFR on a recreationally active person with PD in regards to functional improvements and safety...
April 2018: International Journal of Sports Physical Therapy
Everton Domingos, Marcos D Polito
AIM: The aim of this study was to compare, by means of a systematic review and meta-analysis, the effects of resistance training with and without blood flow restriction (BFR) on blood pressure (BP). MATERIALS AND METHODS: This review was composed according to the preferred Reporting items for Systematic Reviews and Meta-Analyses guidelines. Searches were carried out in the databases PubMed, SPORTDiscus, and Web of Science. BP was the main outcome for the analysis of the acute, post-exercise, and chronic effect of resistance exercise with and without BFR...
September 15, 2018: Life Sciences
Nicholas N DePhillipo, Mitchell I Kennedy, Zach S Aman, Andrew S Bernhardson, Luke T O'Brien, Robert F LaPrade
Blood flow restriction (BFR) therapy is becoming increasingly popular in musculoskeletal injury rehabilitation. In particular, this form of therapy is being utilized more often in the postoperative setting following knee surgery, including anterior cruciate ligament reconstruction. BFR therapy provides patients and clinicians an alternative treatment option to standard muscle strengthening and hypertrophy guidelines in the setting of postoperative pain, weakness, and postoperative activity restrictions that contribute to muscle atrophy...
August 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
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