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Blood restriction training

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https://www.readbyqxmd.com/read/28224640/low-load-resistance-training-with-low-relative-pressure-produces-muscular-changes-similar-to-high-load-resistance-training
#1
Daeyeol Kim, Jeremy P Loenneke, Xin Ye, Debra A Bemben, Travis W Beck, Rebecca D Larson, Michael G Bemben
INTRODUCTION: The purpose of this study was to compare the acute and chronic response of high-load (HL) resistance training to low-load resistance training with a low blood flow restriction (LL-BFR) pressure. METHODS: Participants completed elbow flexion with either HL or LL-BFR, or non-exercise (CON). In the chronic study, participants in the HL and LL-BFR were trained for 8 weeks to determine differences in muscle size and strength. The acute study examined the changes in Pre/Post torque, muscle swelling, and blood lactate...
February 22, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28174436/cardiovascular-response-to-bouts-of-exercise-with-blood-flow-restriction
#2
Kestutis Bunevicius, Arturas Sujeta, Kristina Poderiene, Birute Zachariene, Viktoras Silinskas, Rimantas Minkevicius, Jonas Poderys
[Purpose] Occlusion training with low-intensity resistance exercises and blood flow restriction increases muscle cross-sectional area and strength. This form of training is used in rehabilitation; therefore, the aim of this study was to examine the effect of one occlusion training session on the cardiovascular response to bouts of exercise. [Subjects and Methods] Two groups took part: a control group without blood flow restriction and an experimental group with blood flow restriction. A single training session was used with the exercise intensity set at 40% of the one repetition maximum...
December 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28143495/self-monitoring-of-blood-glucose-in-non-insulin-treated-type-2-diabetes-the-smbg-study-study-protocol-for-a-randomised-controlled-trial
#3
RANDOMIZED CONTROLLED TRIAL
Sharon Parsons, Stephen Luzio, Stephen Bain, John Harvey, Jillian McKenna, Atir Khan, Sam Rice, Alan Watkins, David R Owens
BACKGROUND: The benefit of Self-monitoring of Blood Glucose (SMBG) in people with non-insulin treated type 2 diabetes remains unclear with inconsistent evidence from randomised controlled trials fuelling the continued debate. Lack of a consistent finding has been attributed to variations in study population and design, including the SMBG intervention. There is a growing consensus that structured SMBG, whereby the person with diabetes and health care provider are educated to detect patterns of glycaemic abnormality and take appropriate action according to the blood glucose profiles, can prove beneficial in terms of lowering HbA1c and improving overall well-being...
January 26, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28143367/does-a-resistance-exercise-session-with-continuous-or-intermittent-blood-flow-restriction-promote-muscle-damage-and-increase-oxidative-stress
#4
Gabriel R Neto, Jefferson S Novaes, Verônica P Salerno, Michel M Gonçalves, Gilmário R Batista, Maria S Cirilo-Sousa
The aim of this study was to compare the effect of low-load resistance exercise (LLRE) with continuous and intermittent blood flow restriction (BFR) on the creatine kinase (CK), lactate dehydrogenase (LDH), protein carbonyl (PC), thiobarbituric acid-reactive substance (TBARS) and uric acid (UA) levels in military men. The study included 10 recreationally trained men aged 19 ± 0.82 years who underwent the following experimental protocols in random order on separate days (72-96 h): 4 LLRE sessions at a 20% 1RM (one-repetition maximum [1RM]) with continuous BFR (LLRE + CBFR); 4 LLRE sessions at 20% 1RM with intermittent BFR (LLRE + IBFR) and 4 high-intensity resistance exercise (HIRE) sessions at 80% 1RM...
January 31, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28143359/the-role-of-blood-flow-restriction-training-for-applied-practitioners-a-questionnaire-based-survey
#5
Stephen D Patterson, Christopher R Brandner
The purpose of the study was to investigate the current use of blood flow restriction (BFR) by practitioners during exercise/training. A questionnaire was developed and data were obtained from 250 participants, with 115 stating that they had prescribed BFR as an intervention. The most common exercise intervention used in combination with BFR was resistance exercise (99/115), followed by during passive (30/115) conditions, and during aerobic exercise (22/115). The main outcome measure for using the technique was to increase muscle mass (32...
February 1, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28127587/corticospinal-excitability-changes-following-blood-flow-restriction-training-of-the-tibialis-anterior-a-preliminary-study
#6
Erhard Trillingsgaard Næss-Schmidt, Morten Morthorst, Asger Roer Pedersen, Jørgen Feldbæk Nielsen, Peter William Stubbs
AIM: To examine the neural excitability of projections to the tibialis anterior (TA) following blood flow restriction training (BFRT). This is the first study to examine the TA following BFRT. METHODS: Ten subjects performed each experiment. Experiment one consisted of BFRT at 130 mmHg (BFRT-low). Experiment two consisted of BFRT at 200 mmHg (BFRT-high), training (TR-only) and blood flow restriction at 200 mmHg (BFR-only) performed on separate days. Blood flow restriction was applied to the thigh and training consisted of rapid dorsiflexion contractions against gravity every 10 s for 15-min...
January 2017: Heliyon
https://www.readbyqxmd.com/read/28121802/delayed-effect-of-blood-flow-restricted-resistance-training-on-rapid-force-capacity
#7
Jakob Lindberg Nielsen, Ulrik Frandsen, Tatyana Prokhorova, Rune Dueholm Bech, Tobias Nygaard, Charlotte Suetta, Per Aagaard
PURPOSE: The aim of the present study was to investigate the effect and time course of high-frequent low-load resistance training with blood-flow restriction (BFR) on rapid force capacity (i.e. rate of torque development (RTD)). METHODS: Ten male subjects (22.8±2.3 years) performed four sets of knee extensor exercise (20%1RM) to concentric failure during concurrent BFR of the thigh (100mmHg), while eight work-matched controls (21.9±3.0 years) trained without BFR (CON)...
January 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28118308/delayed-onset-muscle-soreness-and-perceived-exertion-following-blood-flow-restriction-exercise
#8
Christopher R Brandner, Stuart A Warmington
The purpose of this study was to determine the perceptual responses to resistance exercise with either heavy-loads (80% 1 repetition maximum [1-RM]), light-loads (20% 1-RM), or light-loads in combination with blood flow restriction (BFR). Despite the use of light-loads, it has been suggested that the adoption of BFR resistance exercise may be limited due to increases in delayed onset muscle soreness (DOMS) and perceived exertion. Seventeen healthy untrained males participated in this balanced, randomized cross-over study...
January 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28093857/can-blood-flow-restriction-augment-muscle-activation-during-high-load-training
#9
Scott J Dankel, Samuel L Buckner, Matthew B Jessee, Kevin T Mattocks, J Grant Mouser, Brittany R Counts, Gilberto C Laurentino, Jeremy P Loenneke
INTRODUCTION: Blood flow restriction has been shown to augment muscle activation and increase muscle size when combined with low-load training; however, much less is known on whether blood flow restriction can augment muscle activation during high-load exercise. PURPOSE: To determine whether applying blood flow restriction can augment muscle activation with traditional high-load resistance exercise. METHOD: Ten individuals completed two sets of elbow flexion exercise to volitional fatigue...
January 16, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28088558/the-effects-of-upper-body-exercise-across-different-levels-of-blood-flow-restriction-on-arterial-occlusion-pressure-and-perceptual-responses
#10
Kevin T Mattocks, Matthew B Jessee, Brittany R Counts, Samuel L Buckner, J Grant Mouser, Scott J Dankel, Gilberto C Laurentino, Jeremy P Loenneke
Recent studies have investigated relative pressures that are applied during blood flow restriction exercise ranging from 40%-90% of resting arterial occlusion pressure; however, no studies have investigated relative pressures below 40% arterial occlusion pressure. The purpose of this study was to characterize the cardiovascular and perceptual responses to different levels of pressures. Twenty-six resistance trained participants performed four sets of unilateral elbow flexion exercise using 30% of their 1RM in combination with blood flow restriction inflated to one of six relative applied pressures (0%, 10%, 20%, 30%, 50%, 90% arterial occlusion pressure)...
January 11, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28012598/mechanisms-underpinning-protection-against-eccentric-exercise-induced-muscle-damage-by-ischemic-preconditioning
#11
Alexander Franz, Michael Behringer, Kazunori Nosaka, Bettina Alexandra Buhren, Holger Schrumpf, Constantin Mayer, Christoph Zilkens, Moritz Schumann
Eccentric exercise training is effective for increasing muscle mass and strength, and improving insulin sensitivity and blood lipid profiles. However, potential muscle damage symptoms such as prolonged loss of muscle function and delayed onset of muscle soreness may restrict the use of eccentric exercise, especially in clinical populations. Therefore, strategies to reduce eccentric exercise-induced muscle damage (EIMD) are necessary, and an extensive number of scientific studies have tried to identify potential intervention modalities to perform eccentric exercises without adverse effects...
January 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/27999852/effect-of-a-high-protein-energy-restricted-diet-combined-with-resistance-training-on-metabolic-profile-in-older-individuals-with-metabolic-impairments
#12
T Amamou, E Normandin, J Pouliot, I J Dionne, M Brochu, E Riesco
Adequate protein intake and resistance training are effective strategies to maintain muscle mass, but the effect of their combination on metabolic profile during weight loss remains to be determined in older adults. The main objective of this study was to determine the effect of a 16-week high-protein caloric restriction combined with resistance training on chronic disease risk factors in obese older individuals with metabolic impairments. A total of 26 overweight adults aged between 60 and 75 years (BMI 32...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/27951413/immunometabolic-parameters-in-overweight-dogs-during-weight-loss-with-or-without-an-exercise-program
#13
A D Vitger, B M Stallknecht, J E Miles, S L Hansen, A Vegge, C R Bjørnvad
The influence of physical activity on metabolic health in overweight dogs is unknown. This study was conducted to evaluate biomarkers of immunometabolic health in relation to changes in physical activity and adiposity. Client-owned overweight dogs participated in a 12-wk intervention based on caloric restriction combined with a training program (fitness and diet [FD] group, n = 8), or caloric restriction alone (diet-only [DO] group, n = 8). Physical activity was monitored by accelerometry. All dogs were fed the same diet and achieved similar weight loss...
November 11, 2016: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/27941491/low-intensity-sprint-training-with-blood-flow-restriction-improves-100-m-dash
#14
M Behringer, D Behlau, J Montag, M McCourt, J Mester
PURPOSE: We investigated the effects of practical blood flow restriction (pBFR) of leg muscles during sprint training on the 100 m dash time in well-trained sport students. METHODS: Participants performed 6x100 m sprints at 60-70% of their maximal 100 m sprinting speed twice a week for 6 weeks, either with (IG; n=12) or without pBFR (CG; n=12). RESULTS: The 100 m dash time significantly decreased more in the IG (-0.38±0.24 s) than in the CG (-0...
November 25, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27941105/compliance-with-malaria-rapid-diagnostic-testing-by-community-health-workers-in-3-malaria-endemic-countries-of-sub-saharan-africa-an-observational-study
#15
Jan Singlovic, IkeOluwapo O Ajayi, Jesca Nsungwa-Sabiiti, Mohamadou Siribié, Armande K Sanou, Ayodele S Jegede, Catherine O Falade, Luc Sermé, Zakaria Gansane, Chinenye Afonne, Vanessa Kabarungi, Josephine Kyaligonza, Joëlle Castellani, Max Petzold, Melba Gomes
BACKGROUND:  The World Health Organization recommends that all malaria management be based on parasitological identification. We monitored performance of trained community health workers (CHWs) in adhering to this recommendation to restrict artemisinin-based combination therapies (ACTs) to positive rapid diagnostic test (RDT)-confirmed cases in children in 3 malaria-endemic sub-Saharan African countries. METHODS:  In 33 villages in Burkina Faso, 45 villages in Nigeria, and 84 villages in Uganda, 265 CHWs were trained over a minimum of 3 days to diagnose malaria using RDTs (prepare, read, record results, and inform the patient about results) and treat RDT-confirmed uncomplicated malaria cases with ACTs...
December 15, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27847218/muscle-strength-is-associated-with-lower-diastolic-blood-pressure-in-schoolchildren
#16
D D Cohen, P López-Jaramillo, J R Fernández-Santos, J Castro-Piñero, Grh Sandercock
Cardiorespiratory fitness (CRF) provides protection against the elevated blood pressure in overweight youth. Less is known regarding any similar protective effect of muscular fitness. We investigated how handgrip strength, an easy to implement measure of muscular strength, interacted with CRF and BMI to determine blood pressure in youth. We measured systolic (SBP) and diastolic (DBP) blood pressure, handgrip strength (HG), CRF and body mass index (BMI) in n=7329 10-16year-olds (47% girls). We defined elevated blood pressure as >91st percentile and Good HG as >33rd percentile...
November 12, 2016: Preventive Medicine
https://www.readbyqxmd.com/read/27837041/acute-effects-of-resistance-exercise-with-continuous-and-intermittent-blood-flow-restriction-on-hemodynamic-measurements-and-perceived-exertion
#17
Gabriel R Neto, Jefferson S Novaes, Verônica P Salerno, Michel M Gonçalves, Bruna K L Piazera, Thais Rodrigues-Rodrigues, Maria S Cirilo-Sousa
This study compared the acute effects of low-intensity resistance exercise (RE) sessions for the upper limb with continuous and intermittent blood flow restriction (BFR) and high-intensity RE with no BFR on lactate, heart rate, double product (DP; heart rate times systolic blood pressure), and perceived exertion (RPE). Ten recreationally trained men (1-5 years strength training; age mean = 19 ± 0.82 years) performed three experimental protocols in random order: (a) low-intensity RE at 20% one-repetition maximum (1RM) with intermittent BFR (LI + IBFR), (b) low-intensity RE at 20% 1RM with continuous BFR (LI + CBFR), and (c) high-intensity RE at 80% 1RM...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27826654/physiological-responses-to-interval-endurance-exercise-at-different-levels-of-blood-flow-restriction
#18
Rogério B Corvino, Harry B Rossiter, Thiago Loch, Jéssica C Martins, Fabrizio Caputo
PURPOSE: We aimed to identify a blood flow restriction (BFR) endurance exercise protocol that would both maximize cardiopulmonary and metabolic strain, and minimize the perception of effort. METHODS: Twelve healthy males (23 ± 2 years, 75 ± 7 kg) performed five different exercise protocols in randomized order: HI, high-intensity exercise starting at 105% of the incremental peak power (P peak); I-BFR30, intermittent BFR at 30% P peak; C-BFR30, continuous BFR at 30% P peak; CON30, control exercise without BFR at 30% P peak; I-BFR0, intermittent BFR during unloaded exercise...
November 8, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27788406/acceptability-of-low-dead-space-syringes-and-implications-for-their-introduction-a-qualitative-study-in-the-west-of-england
#19
Joanna M Kesten, Rachel Ayres, Jane Neale, Jody Clark, Peter Vickerman, Matthew Hickman, Sabi Redwood
BACKGROUND: It is recommended that needle and syringe programmes (NSP) distribute low dead space syringes (LDSS) to reduce blood-borne virus transmission. We explored the acceptability of detachable LDSS among people who inject drugs (PWID) and staff who work to support them. METHODS: Semi-structured interviews were performed with 23 PWID (15 men and 8 women) and 13 NSP staff members (6 men and 7 women) in Bath and Bristol, England. Recruited PWID reflected varying demographic characteristics, drug use and injecting preferences...
January 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/27767984/the-optimum-hematocrit
#20
Walter H Reinhart
The hematocrit (Hct) determines the oxygen carrying capacity of blood, but also increases blood viscosity and thus flow resistance. From this dual role the concept of an optimum Hct for tissue oxygenation has been derived. Viscometric studies using the ratio Hct/blood viscosity at high shear rate showed an optimum Hct of 50-60% for red blood cell (RBC) suspensions in plasma. For the perfusion of an artificial microvascular network with 5-70μm channels the optimum Hct was 60-70% for high driving pressures. With lower shear rates or driving pressures the optimum Hct shifted towards lower values...
2016: Clinical Hemorheology and Microcirculation
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