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https://read.qxmd.com/read/30765919/jump-training-with-blood-flow-restriction-has-no-effect-on-jump-performance
#1
Masahiro Horiuchi, Junko Endo, Takashi Sato, Koichi Okita
This study investigated whether jump training with blood flow restriction (BFR) improves jump performance compared to jump training without BFR under similar exercise intensity in healthy young humans. The participants were twenty healthy males who were assigned to either jump training with BFR (n = 10) or jump training without BFR [control (CON); n = 10] groups. All subjects completed five sets of 10 repetitions with one-minute intervals of half-squat jumps (SJ) at maximal effort, four days a week for four weeks...
December 2018: Biology of Sport
https://read.qxmd.com/read/30761200/the-effect-of-cuff-width-for-determining-limb-occlusion-pressure-a-comparison-of-blood-flow-restriction-devices
#2
Alyssa M Weatherholt, William R Vanwye, Jackie Lohmann, Johnny G Owens
The purpose of this study was to compare the standing lower extremity limb occlusion pressure (LOP) between two units. It was hypothesized that the Delfi unit, which utilizes a wider cuff (11.5 cm), would require significantly less LOP as compared to the KAASTU unit, which utilizes a narrow cuff (5 cm). Twenty-nine healthy participants (22 men, 7 women) mean age 24 years old (± 1.7 SD) volunteered. The procedure was identical for each cuff, completed with 5 minutes of rest in between. The cuff was placed on the proximal left thigh in the standing position...
2019: International Journal of Exercise Science
https://read.qxmd.com/read/30740314/effects-of-continuous-moderate-exercise-with-partial-blood-flow-restriction-during-hemodialysis-a-protocol-for-a-randomized-clinical-trial
#3
Rodrigo Kohn Cardoso, Aline Machado Araujo, Rafael Bueno Orcy, Maristela Bohlke, Jean Pierre Oses, Fabrício Boscolo Del Vecchio, Franklin Correa Barcellos, Maria Cristina Gonzalez, Airton José Rombaldi
Chronic kidney disease (CKD) is associated with physical weakness and increased oxidative stress and inflammation levels. Rehabilitation programs are associated with an improvement in the functional capacity, inflammatory and oxidative stress profile. Exercise associated with blood flow restriction (BFR) has been demonstrating positive effects in training programs, but there is lack information about exercise with BFR in CKD. Therefore, the aim of the present study is to describe a protocol using continuous moderate exercise with blood flow restriction (BFR) applied during hemodialysis (HD) to measures health indicators and immune system and oxidative stress parameters in CKD patients...
2019: MethodsX
https://read.qxmd.com/read/30740059/application-of-blood-flow-restriction-to-optimize-exercise-countermeasures-for-human-space-flight
#4
REVIEW
Michael Behringer, Christina Willberg
In recent years there has been a strong increase in publications on blood flow restriction (BFR) training. In particular, the fact that this type of training requires only low resistance to induce muscle strength and mass gains, makes BFR training interesting for athletes and scientists alike. For the same reason this type of training is particularly interesting for astronauts working out in space. Lower resistance during training would have the advantage of reducing the risk of strain-induced injuries. Furthermore, strength training with lower resistances would have implications for the equipment required for training under microgravity conditions, as significantly lower resistances have to be provided by the training machines...
2019: Frontiers in Physiology
https://read.qxmd.com/read/30736032/the-validity-of-the-emg-and-mmg-techniques-to-examine-muscle-hypertrophy
#5
Ethan C Hill, Terry J Housh, Joshua L Keller, Cory M Smith, Richard J Schmidt, Glen O Johnson
INTRODUCTION: The purpose of this investigation was to examine the ability of the electromyographic (EMG) and mechanomyographic (MMG) amplitude versus torque relationships to track group and individual changes in muscle hypertrophy as a result of resistance training. METHODS: Twelve women performed four weeks of forearm flexion blood flow restriction (BFR) resistance training at a frequency of three times per week. The training was performed at an isokinetic velocity of 120°·s-¹ with a training load that corresponded to 30% of concentric peak torque...
February 8, 2019: Physiological Measurement
https://read.qxmd.com/read/30734842/the-effect-of-blood-flow-occlusion-during-acute-low-intensity-isometric-elbow-flexion-exercise
#6
REVIEW
David B Copithorne, Charles L Rice
PURPOSE: Blood flow restriction (BFR) with low-intensity (< 30% of 1 repetition maximum strength) muscle contraction has been used chronically (> 4 weeks) to enhance resistance training. However, mechanisms underlying muscle adaptations following BFR are not well understood. To explore changes related to chronic BFR adaptations, the current study used blood flow occlusion (BFO) during an acute bout of low-intensity isometric fatiguing contractions to assess peripheral (muscle) factors affected...
February 8, 2019: European Journal of Applied Physiology
https://read.qxmd.com/read/30723827/the-effect-of-unilateral-blood-flow-restriction-on-temporal-and-spatial-gait-parameters
#7
Timothy John Faras, Michael David Laporte, Remi Sandoval, Fadi Najjar, Vanessa Ade, Peter Stubbs
Blood flow restriction walking (BFR-W) is becoming more frequently used in aerobic and strength training and it has been proposed that BFR-W can be used in clinical populations. BFR-W may change gait stability yet few studies have assessed gait changes during or following BFR-W. The aim of this study was to assess if spatial-temporal gait parameters change during and following BFR-W. Twenty-four participants completed two walking sessions (>48-hours apart); 1) Unilateral BFR-W applied at the dominant thigh, 2) walking without BFR...
January 2019: Heliyon
https://read.qxmd.com/read/30687436/technical-and-training-related-aspects-of-resistance-training-using-blood-flow-restriction-in-competitive-sport-a-review
#8
Michal Wilk, Michal Krzysztofik, Mariola Gepfert, Stanislaw Poprzecki, Artur Gołaś, Adam Maszczyk
Blood flow restriction (BFR) combined with resistance training (RT-BFR) shows significant benefits in terms of muscle strength and hypertrophy. Such effects have been observed in clinical populations, in groups of physically active people, and among competitive athletes. These effects are comparable or, in some cases, even more efficient compared to conventional resistance training (CRT). RT-BFR stimulates muscle hypertrophy and improves muscle strength even at low external loads. Since no extensive scientific research has been done in relation to groups of athletes, the aim of the present study was to identify technical, physiological and methodological aspects related to the use of RT-BFR in competitive athletes from various sport disciplines...
December 2018: Journal of Human Kinetics
https://read.qxmd.com/read/30662074/post-operative-rehabilitation-of-a-distal-biceps-brachii-tendon-reattachment-in-a-weightlifter-a-case-report
#9
Matt Wentzell
Objective: To describe the successful rehabilitation of a distal biceps brachii tendon reattachment following an acute traumatic tendon rupture. Clinical Features: A 30-year-old weightlifter presented five days post-op after a left distal biceps tendon repair. A three month one pound weight-restriction was recommended by the attending surgeon. Active and passive elbow and wrist range of motion were markedly reduced with profuse post-operative swelling and bruising noted upon initial inspection...
December 2018: Journal of the Canadian Chiropractic Association
https://read.qxmd.com/read/30638439/proximal-distal-and-contralateral-effects-of-blood-flow-restriction-training-on-the-lower-extremities-a-randomized-controlled-trial
#10
Eric N Bowman, Rami Elshaar, Heather Milligan, Gregory Jue, Karen Mohr, Patty Brown, Drew M Watanabe, Orr Limpisvasti
BACKGROUND: Blood flow restriction (BFR) training involves low-weight exercises performed under vascular occlusion via an inflatable cuff. For patients who cannot tolerate high-load exercises, BFR training reportedly provides the benefits of high-load regimens, with the advantage of less tissue and joint stress. HYPOTHESIS: Low-load BFR training is safe and efficacious for strengthening muscle groups proximal, distal, and contralateral to tourniquet placement in the lower extremities...
January 14, 2019: Sports Health
https://read.qxmd.com/read/30566362/resistance-training-with-interval-blood-flow-restriction-effectively-enhances-intramuscular-metabolic-stress-with-less-ischemic-duration-and-discomfort
#11
Koichi Okita, Shingo Takada, Noriteru Morita, Masashige Takahashi, Kagami Hirabayashi, Takashi Yokota, Shintaro Kinugawa
Increases in muscle size and strength similar to those with high resistance load can be achieved by combining lower-loads with continuous blood flow restriction (BFR). However, high ratings for distress have been reported for continuous BFR. Therefore, we investigated the efficacy (metabolic stress) of BFR applied only during intervals in resistance exercise. Seven healthy men performed three 1-min sets of plantar flexion (30 reps/min), with 1-min rest intervals under 4 conditions: low-load resistance exercise (L, 20 % 1-RM) without BFR (L-noBFR), L with BFR during exercise sets (L-exBFR), L with BFR during resting interval periods (L-intBFR), and L with continuous BFR during both exercises and intervals (L-conBFR)...
December 19, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://read.qxmd.com/read/30531417/effects-of-blood-flow-restriction-training-on-aerobic-capacity-and-performance-a-systematic-review
#12
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
https://read.qxmd.com/read/30406466/limb-blood-flow-restriction-plus-mild-aerobic-exercise-training-protects-the-heart-against-isoproterenol-induced-cardiac-injury-in-old-rats-role-of-gsk-3%C3%AE
#13
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
https://read.qxmd.com/read/30391274/effect-of-16-weeks-of-resistance-exercise-and-detraining-comparing-two-methods-of-blood-flow-restriction-in-muscle-strength-of-healthy-older-women-a-randomized-controlled-trial
#14
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)...
December 2018: Experimental Gerontology
https://read.qxmd.com/read/30386254/muscle-adaptations-to-high-load-training-and-very-low-load-training-with-and-without-blood-flow-restriction
#15
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
https://read.qxmd.com/read/30356748/the-role-of-inflammation-and-immune-cells-in-blood-flow-restriction-training-adaptation-a-review
#16
REVIEW
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
https://read.qxmd.com/read/30335575/the-combined-effect-of-sprint-interval-training-and-postexercise-blood-flow-restriction-on-critical-power-capillary-growth-and-mitochondrial-proteins-in-trained-cyclists
#17
Emma A Mitchell, Neil R W Martin, Mark C Turner, Conor W Taylor, Richard A Ferguson
Sprint interval training (SIT) combined with postexercise 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, however, has yet to be demonstrated. Trained male cyclists ( n = 21) (V̇o2max : 62.8 ± 3.7 ml·min-1 ·kg-1 ) undertook 4 wk of SIT (repeated 30-s maximal sprints) either alone (CON; n = 10) or with postexercise BFR ( n = 11)...
January 1, 2019: Journal of Applied Physiology
https://read.qxmd.com/read/30327609/hemodynamic-responses-to-low-load-blood-flow-restriction-and-unrestricted-high-load-resistance-exercise-in-older-women
#18
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
https://read.qxmd.com/read/30306467/effects-of-blood-flow-restriction-training-on-muscular-strength-and-hypertrophy-in-older-individuals-a-systematic-review-and-meta-analysis
#19
REVIEW
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
https://read.qxmd.com/read/30304785/strengthening-the-brain-is-resistance-training-with-blood-flow-restriction-an-effective-strategy-for-cognitive-improvement
#20
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
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