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https://www.readbyqxmd.com/read/29451065/shoulder-and-arm-muscle-activity-during-elastic-band-exercises-performed-in-a-hospital-bed
#1
Sebastian Skals, Jonas Vinstrup, Emil Sundstrup, Markus D Jakobsen, Christoffer H Andersen, Lars L Andersen
OBJECTIVE: Muscle atrophy is a common side-effect of bed rest during hospitalization. However, resistance training may minimize or even prevent these complications. Therefore, we evaluated the efficiency of four upper-body elastic resistance exercises that could be performed while lying or sitting in a hospital bed. METHODS: Twenty-two healthy subjects performed three repetitions of each exercise in a supine and seated position with a perceived intensity of 3 (low) and 8 (high) on the Borg CR10 Scale...
February 16, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29447788/the-influence-of-febuxostat-on-coronary-artery-endothelial-dysfunction-in-patients-with-coronary-artery-disease-a-phase-4-randomized-placebo-controlled-double-blind-crossover-trial
#2
Allison G Hays, Micaela Iantorno, Michael Schär, Shenghan Lai, Matthew Czarny, Elayne Breton, Robert N Palmer, Andrew Whelton, Robert G Weiss, Gary Gerstenblith
BACKGROUND: The xanthine oxidase (XO) system is a significant source of vascular oxidative stress, which is believed to impair endothelial function, an important contributor to atherosclerotic disease. We tested whether febuxostat, a potent XO inhibitor, improves coronary endothelial function (CEF) in patients with stable coronary artery disease (CAD) in a single-center, randomized, placebo-controlled, double-blind crossover trial. METHODS: CEF was measured using noninvasive magnetic resonance imaging (MRI) assessment of changes in 30 patients with stable CAD and baseline impaired CEF...
March 2018: American Heart Journal
https://www.readbyqxmd.com/read/29446524/impact-of-blood-flow-restricted-bodyweight-exercise-on-skeletal-muscle-adaptations
#3
J E Jakobsgaard, M Christiansen, P Sieljacks, J Wang, T Groennebaek, F de Paoli, K Vissing
This study ascertains the ability of bodyweight blood flow-restricted (BFR) exercise training to promote skeletal muscle adaptations of significance for muscle accretion and metabolism. Six healthy young individuals (three males and three females) performed six weeks of bodyweight BFR training. Each session consisted of five sets of sit-to-stand BFR exercise to volitional failure with 30-second inter-set recovery. Prior to, and at least 72 h after training, muscle biopsies were taken from m. vastus lateralis to assess changes in fibre type-specific cross-sectional area (CSA), satellite cell (SC) and myonuclei content and capillarization, as well as mitochondrial protein expression...
February 15, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29431546/the-trainability-of-adolescent-soccer-players-to-brief-periodized-complex-training
#4
Athanasios Chatzinikolaou, Konstantinos Michaloglou, Alexandra Avloniti, Diamanda Leontsini, Chariklia K Deli, Dimitris Vlachopoulos, Luis Gracia-Marco, Sotirios Arsenis, Ioannis Athanailidis, Dimitrios Draganidis, Athanasios Z Jamurtas, Craig A Williams, Ioannis G Fatouros
PURPOSE: Τo investigate the effect of a complex, short-term strength/power training protocol on performance and body composition of elite early-adolescent soccer players. METHODS: Twenty-two players (14-15 years) were randomly assigned to (a) an experimental (EG, n=12, participated in a 5-week training protocol with traditional multi-joint power resistance exercises, Olympic-style lifts, plyometric drills and speed work, four times/week) or (b) a control group (CG, n=10)...
February 12, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29430940/positive-effects-of-a-short-term-intense-elastic-resistance-training-program-on-body-composition-and-physical-functioning-in-overweight-older-women
#5
Nicole B Fritz, Álvaro Juesas, Pedro Gargallo, Joaquín Calatayud, Julio Fernández-Garrido, Michael E Rogers, Juan C Colado
The aim of this study was to investigate the effects of a resistance training program (RTP) in older overweight women (OOW) using two different types of elastic devices. METHODS: This study was a randomized controlled trial with pre- and postintervention measures. Participants included OOW, aged 60-85 years, with no medical history of disease that would preclude them from engaging in physical exercise. Participants were randomly divided into the following groups: elastic tubes with handles group (ETG; n = 22), traditional elastic bands group ( n = 21), and control group (CG; n = 20)...
January 1, 2018: Biological Research for Nursing
https://www.readbyqxmd.com/read/29427725/knee-extensor-strength-gains-mediate-symptom-improvement-in-knee-osteoarthritis-secondary-analysis-of-a-randomised-controlled-trial
#6
Michelle Hall, Rana S Hinman, Tim V Wrigley, Jessica Kasza, Boon-Whatt Lim, Kim L Bennell
OBJECTIVE: To determine if an increase in knee extensor strength mediates the effect of a 12-week knee extensor strength training program on pain and physical function improvement in people with knee osteoarthritis. DESIGN: Secondary analysis from a randomised controlled trial comparing the effects of a 12-week knee extensor strengthening exercise program to a control group with no intervention. METHODS: Data from participants with complete data (n=97) enrolled in a previous clinical trial were analysed...
February 7, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29425473/beetroot-increases-muscle-performance-and-oxygenation-during-sustained-isometric-exercise-but-does-not-alter-muscle-oxidative-efficiency-and-microvascular-reactivity-at-rest
#7
Stavros Papadopoulos, Konstantina Dipla, Areti Triantafyllou, Michalis G Nikolaidis, Antonios Kyparos, Panagiota Touplikioti, Ioannis S Vrabas, Andreas Zafeiridis
OBJECTIVE: To examine the effects of beetroot juice (BRJ) on (i) in vivo skeletal muscle O2 consumption (mVO2) and microvascular reactivity at rest and (ii) muscle performance, muscle oxygenation, and mVO2 during sustained isometric handgrip exercise (IHG). METHODS: Sixteen young males consumed, randomly, a nitrate-rich (8.1 mmol BRJnitrate) or nitrate-depleted (BRJplacebo) BRJ. After 2.5 hours, they performed an occlusion-reperfusion maneuver at rest, a 3-minute sustained IHG, and a sustained IHG to exhaustion with arterial occlusion...
February 9, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29420925/pre-exercise-%C3%AE-hydroxy-%C3%AE-methylbutyrate-free-acid-supplementation-improves-work-capacity-recovery-a-randomized-double-blinded-placebo-controlled-study
#8
Ana Luiza Matias Correia, Filipe Dinato de Lima, Martim Bottaro, Amilton Vieira, Andrew Correa da Fonseca, Ricardo M Lima
The purpose of this study was to investigate the effects of a single-dose of β-hydroxy-β-methylbutyrate free acid (HMB-FA) supplementation on muscle recovery after a high-intensity exercise bout. Twenty-three trained young males were randomly assigned to receive either a single-dose supplementation of 3g of HMB-FA (n = 12; age 22.8 ± 3.0 years) or placebo (PLA; n = 11; age 22.9 ± 3.1 years). A muscle damage protocol was applied 60 minutes after supplementation, and consisted of seven sets of 20 drop jumps from a 60-cm box with 2-min rest intervals between sets...
February 8, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29420154/hip-position-and-sex-differences-in-motor-unit-firing-patterns-of-the-vastus-medialis-and-vastus-medialis-oblique-in-healthy-individuals
#9
Yi-Ling Peng, Matthew S Tenan, Lisa Griffin
Weakness of the vastus medialis oblique (VMO) has been proposed to explain the high prevalence of knee pain in females. Clinicians commonly use exercises in an attempt to preferentially activate the VMO. Recently, our group found evidence to support clinical theory that the VMO is neurologically distinct from the vastus medialis (VM). However, the ability to voluntarily activate these muscle sub-sections is still disputed. The aim of this study was to determine if VM and VMO activation varies between sexes and if control of the two muscles is different between rehabilitation exercises...
February 8, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29412443/muscle-quality-improves-with-extended-high-intensity-resistance-training-after-hip-fracture
#10
R A Briggs, J R Houck, M J Drummond, J M Fritz, P C LaStayo, R L Marcus
BACKGROUND: Muscle mass deficits endure after hip fracture. Strategies to improve muscle quality may improve mobility and physical function. It is unknown whether training after usual care yields muscle quality gains after hip fracture. OBJECTIVES: To determine whether muscle quality improves after hip fracture with high-intensity resistance training and protein supplementation. DESIGN: Case series. SETTING: University of Utah Skeletal Muscle Exercise Research Facility...
2018: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/29411127/changes-in-central-and-peripheral-neuromuscular-fatigue-indices-after-concentric-versus-eccentric-contractions-of-the-knee-extensors
#11
Robin Souron, Kazunori Nosaka, Marc Jubeau
PURPOSE: To better understand neuromuscular characteristics of eccentric exercise-induced muscle damage, this study compared between concentric (CONC) and eccentric (ECC) exercises of knee extensor muscles, and the first (ECC1) and second bouts of the eccentric exercise (ECC2) for central and peripheral parameters associated with neuromuscular fatigue. METHODS: Twelve young men performed three exercise bouts separated by at least 1 week between CONC and ECC1, and 2 weeks between ECC1 and ECC2...
February 6, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29405809/impairment-based-rehabilitation-increases-lower-leg-muscle-volumes-and-strength-in-chronic-ankle-instability-patients-a-preliminary-study
#12
Mark A Feger, Luke Donovan, C Collin Herb, Geoffrey G Handsfield, Silvia S Blemker, Joseph M Hart, Susan A Saliba, Mark F Abel, Joseph S Park, Jay Hertel
CONTEXT: Chronic ankle instability (CAI) patients have demonstrated atrophy of foot and ankle musculature and deficits in ankle strength. The effect of rehabilitation on muscle morphology and ankle strength has not previously been investigated in CAI patients. OBJECTIVE: Our objective was to analyze the effect of impairment-based rehabilitation on intrinsic and extrinsic foot and ankle muscle volumes and strength in CAI patients. DESIGN: Controlled laboratory study...
February 6, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29399735/rotator-cuff-repair-post-operative-rehabilitation-concepts
#13
REVIEW
Terrance A Sgroi, Michelle Cilenti
PURPOSE OF REVIEW: With improvements in surgical techniques and increased knowledge of rotator cuff healing, there was a need to identify a safe progression after rotator cuff repair. The rehabilitation specialist plays an integral role in the care of these patients, and by implementing an evidence and criteria-based model, patients may be able to return to their prior levels of function sooner with fewer complications. RECENT FINDINGS: Timing of progression for rotator cuff patients should align not only with healing but also potential strain on the involved tissue...
February 5, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29396987/the-effects-of-flexibility-training-on-exercise-induced-muscle-damage-in-young-men-with-limited-hamstrings-flexibility
#14
Clarissa M Brusco, Anthony J Blazevich, Regis Radaelli, Cintia E Botton, Eduardo L Cadore, Bruno M Baroni, Gabriel S Trajano, Ronei S Pinto
Adaptations to 6 weeks of supervised hamstring stretching training and its potential impact on symptoms of eccentric exercise-induced muscle damage (EIMD) were studied in 10 young, untrained men with limited hamstrings flexibility. Participants performed unilateral flexibility training (experimental leg; EL) on an isokinetic dynamometer while the contralateral limb acted as control (CL). Hip range of motion (ROM), passive, isometric and concentric torques, active optimum angle, and biceps femoris and semitendinosus muscle thickness and ultrasound echo intensity were assessed both before and after the training...
February 3, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29395632/predictors-of-clinical-success-in-runners-with-patellofemoral-pain-secondary-analyses-of-a-randomized-clinical-trial
#15
Jean-Francois Esculier, Laurent J Bouyer, Blaise Dubois, Jean Leblond, Mélanie Brisson, Luc Chau, Jean-Sébastien Roy
OBJECTIVES: To identify predictors of outcome to a rehabilitation program focused on education and management of training loads in runners with patellofemoral pain (PFP). DESIGN: Secondary analyses of a randomized clinical trial. METHODS: Fifty-eight runners with PFP (62% female, aged 31.2±6.6years, running 20.3±5.6km/week) were included in analyses. Following baseline collection of demographics, anthropometry, symptomatology, isometric strength, running mechanics and radiological data, runners were randomized to one of the three 8-week intervention program: (1) Education on symptoms management and training modifications; (2) Education+Exercise program; (3) Education+Gait retraining...
January 27, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29392340/decompression-for-cervical-disc-herniation-using-the-full-endoscopic-anterior-technique
#16
REVIEW
S Oezdemir, M Komp, P Hahn, S Ruetten
OBJECTIVE: Resection of a cervical disc herniation using a full-endoscopic technique with an anterior approach. INDICATION: Fresh disc herniation with monoradicular symptoms in the upper extremity. CONTRAINDICATIONS: Pure neck pain, cervical myelopathy, older and calcified disc herniations, higher grade of instability and deformity. SURGICAL TECHNIQUE: Introduction of a guidewire and dilatator to a cervical disc using an anterior approach...
February 1, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29389835/effects-of-acute-salbutamol-intake-on-peripheral-and-central-fatigue-in-trained-men
#17
Julien Laurent, Michel Guinot, Thibault Le Roux Mallouf, Mathieu Marillier, Julie Larribaut, Samuel Verges
PURPOSE: Ergogenic effect in physically active subjects has been reported following acute salbutamol (SAL) intake. β2-agonists have potential stimulant effects within the central nervous system that could be involved in this ergogenic effect. We hypothesized that acute SAL intake would induce changes in cerebral responses during exercise, with significant improvement in cerebral oxygenation and voluntary activation (VA) contributing to an increase in muscle performance. METHODS: Fourteen trained male subjects (25 ± 5 years) performed repeated isometric knee extensions until task failure (TF) following 4 mg (oral) SAL, 800 μg (inhaled) SAL, or placebo intake...
January 31, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29388218/identifying-the-role-of-group-iii-iv-muscle-afferents-in-the-carotid-baroreflex-control-of-mean-arterial-pressure-and-heart-rate-during-exercise
#18
Thomas J Hureau, Joshua C Weavil, Taylor S Thurston, Ryan M Broxterman, Ashley D Nelson, Amber D Bledsoe, Jacob E Jessop, Russell S Richardson, D Walter Wray, Markus Amann
This study sought to comprehensively investigate the role of metabolically and mechanically sensitive group III/IV muscle afferents in carotid baroreflex responsiveness and resetting during both electrically-evoked (EVO, no central command) and voluntary (VOL, requiring central command) isometric single-leg knee-extension (15% of MVC) exercise. Participants (n = 8) were studied under control conditions (CTRL) and following lumbar intrathecal fentanyl injection (FENT) to inhibit μ-opioid receptor-sensitive lower limb muscle afferents...
February 1, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29385005/time-response-of-photobiomodulation-therapy-on-muscular-fatigue-in-humans
#19
Mateus Rossato, Rodolfo André Dellagrana, Raphael Luiz Sakugawa, Caetano Decian Lazzari, Bruno Manfredini Baroni, Fernando Diefenthaeler
The aim of this study was to identify the effects of two different time responses on fatigue of knee extensor. Sixteen male volunteers (26±6.0 years 81±12 kg, and 181±7.4 cm) participated of study. Participants performed the same protocol in five sessions, [control, placebo (placebo applied both 6 hours before and immediately before the test), 6h before + immediately before (PBMT applied both 6 hours before and immediately before the test), 6h before (PBMT applied 6 hours before and placebo applied immediately before the test), and immediately before (placebo applied 6 hours before and PBMT applied immediately before the test)]...
January 29, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29384998/acute-hypotension-after-moderate-intensity-handgrip-exercise-in-hypertensive-elderly-people
#20
Luiz R Souza, Joyce B Vicente, Geiziane R Melo, Vivian C Moraes, Rafael R Olher, Iorrany C Sousa, Luiz H Peruchi, Rodrigo V Neves, Thiago S Rosa, Aparecido P Ferreira, Milton R Moraes
Isometric handgrip (IHG) training is effective in reducing blood pressure (BP), but little is known about the occurrence of acute hypotension by post-isometric exercise hypotension (PIEH) and the underlying mechanisms. Ten sedentary hypertensive elderly people (seven women and three men) individuals, with a mean age of 73.2±2.2 years and systolic BP (SBP) of 135.1±6.5, were included; they were hypertensive for 13.2±6.9 years and were receiving medications. These patients underwent two experimental sessions of isometric exercise using a portable hydraulic handgrip dynamometer: (i) sham session with 3% of maximal voluntary isometric contraction (MVIC) and (ii) experimental isometric session with 30% MVIC, completing a total of 8 sets of 1 min contraction and 1 min rest pause (overload of work = 51...
January 29, 2018: Journal of Strength and Conditioning Research
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