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Neuromuscular control

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https://www.readbyqxmd.com/read/28453658/androgen-receptor-agonists-increase-lean-mass-improve-cardiopulmonary-functions-and-extend-survival-in-preclinical-models-of-duchenne-muscular-dystrophy
#1
Suriyan Ponnusamy, Ryan D Sullivan, Dahui You, Nadeem Zafar, Chuan He Yang, Thirumagal Thiyagarajan, Daniel L Johnson, Maron L Barrett, Nikki J Koehler, Mayra Star, Erin J Stephenson, Dave Bridges, Stephania A Cormier, Lawrence M Pfeffer, Ramesh Narayanan
Duchenne muscular dystrophy (DMD) is a neuromuscular disease that predominantly affects boys as a result of mutation(s) in the dystrophin gene. DMD is characterized by musculoskeletal and cardiopulmonary complications, resulting in shorter life-span. Boys afflicted by DMD typically exhibit symptoms within 3-5 years of age and declining physical functions before attaining puberty. We hypothesized that rapidly deteriorating health of pre-pubertal boys with DMD could be due to diminished anabolic actions of androgens in muscle, and that intervention with an androgen receptor (AR) agonist will reverse musculoskeletal complications and extend survival...
April 27, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28453452/the-efficacy-of-a-huber-exercise-system-mediated-sensorimotor-training-protocol-on-proprioceptive-system-lumbar-movement-control-and-quality-of-life-in-patients-with-chronic-non-specific-low-back-pain
#2
Amir Letafatkar, Maryam Nazarzadeh, Malihe Hadadnezhad, Niloufar Farivar
BACKGROUND: There is a relation between deficits of the proprioceptive system and movement control dysfunction in patients with chronic low back pain (LBP) but, the exact mechanism of this relation is unknown. Exercise therapy has been recognized as an effective method for low back pain treatment. In spite of this, it is not clear which of the various exercise therapy programs lead to better results. OBJECTIVE: Therefore, the present analyze the efficacy of a HUBER study aims to exercise system mediated sensorimotor training protocol on proprioceptive system, lumbar movement control (LMC) and quality of life (QOL) in patients with chronic non-specific LBP...
April 21, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28446586/muscle-synergies-obtained-from-comprehensive-mapping-of-the-primary-motor-cortex-forelimb-representation-using-high-frequency-long-duration-icms
#3
Sommer L Amundsen Huffmaster, Gustaf M Van Acker, Carl W Luchies, Paul D Cheney
Simplifying neuromuscular control for movement has previously been explored by extracting muscle synergies from voluntary movement electromyography (EMG) patterns. The purpose of this study was to investigate muscle synergies represented in EMG recordings associated with direct electrical stimulation of single sites in primary motor cortex (M1). We applied single electrode high-frequency, long-duration intracortical microstimulation (HFLD-ICMS) to the forelimb region of M1 in two rhesus macaques using parameters previously found to produce forelimb movements to stable spatial endpoints (90-150 Hz, 90-150 μA, 1000 ms stimulus train lengths)...
April 26, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28446181/a-neuromuscular-electrical-stimulation-nmes-and-robot-hybrid-system-for-multi-joint-coordinated-upper-limb-rehabilitation-after-stroke
#4
Wei Rong, Waiming Li, Mankit Pang, Junyan Hu, Xijun Wei, Bibo Yang, Honwah Wai, Xiaoxiang Zheng, Xiaoling Hu
BACKGROUND: It is a challenge to reduce the muscular discoordination in the paretic upper limb after stroke in the traditional rehabilitation programs. METHOD: In this study, a neuromuscular electrical stimulation (NMES) and robot hybrid system was developed for multi-joint coordinated upper limb physical training. The system could assist the elbow, wrist and fingers to conduct arm reaching out, hand opening/grasping and arm withdrawing by tracking an indicative moving cursor on the screen of a computer, with the support from the joint motors and electrical stimulations on target muscles, under the voluntary intention control by electromyography (EMG)...
April 26, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28445884/synergistic-action-of-presynaptic-muscarinic-acetylcholine-receptors-and-adenosine-receptors-in-developmental-axonal-competition-at-the-neuromuscular-junction
#5
Laura Nadal, Neus Garcia, Erica Hurtado, Anna Simó, Marta Tomàs, Maria Angel Lanuza, Victor Cilleros, Josep Maria Tomàs
The development of the nervous system involves the initial overproduction of synapses, which promotes connectivity. Hebbian competition between axons with different activities leads to the loss of roughly half of the overproduced elements and this refines connectivity. We used quantitative immunohistochemistry to investigate, in the postnatal day 7 (P7) to P9 neuromuscular junctions, the involvement of muscarinic receptors (muscarinic acetylcholine autoreceptors and the M1, M2, and M4 subtypes) and adenosine receptors (A1 and A2A subtypes) in the control of axonal elimination after the mouse levator auris longus muscle had been exposed to selective antagonists in vivo...
April 27, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28444416/control-of-dna-integrity-in-skeletal-muscle-under-physiological-and-pathological-conditions
#6
REVIEW
Yara Bou Saada, Vlada Zakharova, Boris Chernyak, Carla Dib, Gilles Carnac, Svetlana Dokudovskaya, Yegor S Vassetzky
Skeletal muscle is a highly oxygen-consuming tissue that ensures body support and movement, as well as nutrient and temperature regulation. DNA damage induced by reactive oxygen species is present in muscles and tends to accumulate with age. Here, we present a summary of data obtained on DNA damage and its implication in muscle homeostasis, myogenic differentiation and neuromuscular disorders. Controlled and transient DNA damage appears to be essential for muscular homeostasis and differentiation while uncontrolled and chronic DNA damage negatively affects muscle health...
April 25, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28444104/psychomotor-ability-and-short-term-memory-and-reading-and-mathematics-achievement-in-children
#7
Cherée Murrihy, Maria Bailey, John Roodenburg
Objective: The aim of our study was to examine whether the findings from previous research, indicating the role of short-term memory as a mediator of the relationship between motor coordination and academic achievement in adolescents, is also evident in a younger child population. Method: The study utilized a quantative cross-sectional design involving 133 children aged 8-12. The McCarron Assessment of Neuromuscular Development (MAND) provided four indicators of psychomotor ability (Finger Nose, Walking, Balancing, and Jumping)...
April 24, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28441059/effectiveness-of-neuromuscular-training-based-on-the-neuromuscular-risk-profile
#8
Timothy E Hewett, Kevin R Ford, Yingying Y Xu, Jane Khoury, Gregory D Myer
BACKGROUND: The effects of targeted neuromuscular training (TNMT) on movement biomechanics associated with the risk of anterior cruciate ligament (ACL) injuries are currently unknown. Purpose/Hypotheses: To determine the effectiveness of TNMT specifically designed to increase trunk control and hip strength. The hypotheses were that (1) TNMT would decrease biomechanical and neuromuscular factors related to an increased ACL injury risk and (2) TNMT would decrease these biomechanical and neuromuscular factors to a greater extent in athletes identified as being at a high risk for future ACL injuries...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28439444/airway-management-of-patients-undergoing-oral-cancer-surgery-a-retrospective-analysis-of-156-patients
#9
Sapna Annaji Nikhar, Ashima Sharma, Mahesh Ramdaspally, Ramachandran Gopinath
OBJECTIVE: Oral cancer patients have a potentially difficult airway, but if managed properly during the perioperative period, morbidity and mortality can be reduced or avoided. METHODS: The medical records of 156 patients who were operated for oral cancers were reviewed for airway management during the perioperative period. RESULTS: The surgical procedures ranged from excisions, wide local excisions with split skin graftings, hemiglossectomies and radical neck nodes dissections to pectoralis major myocutaneous or free fibular flaps...
April 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28437492/clinical-rehabilitation-of-anterior-knee-pain-current-concepts
#10
Laurie A Hiemstra, Sarah Kerslake, Elizabeth A Arendt
Rehabilitation is the hallmark of the nonoperative treatment of anterior knee pain (AKP). Whether a patient has had appropriate rehabilitation can be assessed in the office with a selection of basic and advanced screening tests. Most important, providing specific instructions in your referral to a therapist skilled in treating patients with AKP can ensure that any identified deficits are appropriately addressed. The etiology of AKP is multifactorial. Whatever its "cause," AKP alters neuromuscular function, and correcting these altered body movement patterns will benefit the patient...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28437264/magnesium-sulphate-improves-pulmonary-function-after-video-assisted-thoracoscopic-surgery-a-randomised-double-blind-placebo-controlled-study
#11
Hye-Min Sohn, Sang-Hoon Jheon, Sunwoo Nam, Sang-Hwan Do
BACKGROUND: Reduced lung volumes are unavoidable after lung resection surgery. Magnesium sulphate (MgSO4) administration has been reported to reduce the requirement for neuromuscular blocking drugs and postoperative analgesics in surgical patients. OBJECTIVE: To investigate the effect of MgSO4 on pulmonary function after video-assisted thoracoscopic surgery (VATS). DESIGN: A randomised, double-blind, placebo-controlled trial. SETTING: A university tertiary care centre...
April 21, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28436401/effects-of-amplitude-and-phase-duration-modification-on-electrically-induced-contraction-force-and-discomfort
#12
Shmuel Springer, Maxim Shapiro
BACKGROUND: Neuromuscular electrical stimulation (NMES) is commonly used in rehabilitation. However, the optimal combination of phase-duration and amplitude for enhancing motor output is not yet resolved. OBJECTIVE: To test the effects of increasing phase-duration and amplitude on isometric knee extension force and discomfort, while controlling the effects of electrode-skin resistance and body mass index (BMI). METHODS: Twenty-one healthy volunteers participated in the study...
April 14, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28435743/effects-of-overground-locomotor-training-on-the-ventilatory-response-to-volitional-treadmill-walking-in-individuals-with-incomplete-spinal-cord-injury-a-pilot-study
#13
Gino S Panza, Andrew A Guccione, Lisa M Chin, Jared M Gollie, Jeffery E Herrick, John P Collins
INTRODUCTION: Although there has been substantial emphasis on the neuromuscular and cardiovascular adaptations following rehabilitation, pulmonary adaptations in individuals with incomplete SCI (iSCI) in response to locomotor training have been less frequently studied. In healthy individuals, effective transition from rest to work is accomplished by a hyperpneic response, which exhibits an exponential curve with three phases. However, the degree to which our current understanding of exercise hyperpnea can be applied to individuals with iSCI is unknown...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28434158/physical-performance-in-newly-diagnosed-hypothyroidism-a-pilot-study
#14
D Gallo, E Piantanida, G Veronesi, A Lai, L Sassi, V Lombardi, E Masiello, P Premoli, E Bianconi, C Cusini, S Rosetti, M L Tanda, A Toniolo, M Ferrario, L Bartalena
OBJECTIVE: Hypothyroidism is complicated by neuromuscular symptoms (myalgias, slowness of movements, and tiredness) and signs (easy fatigability and cramps), which may have a negative impact on general well-being and quality of life. In a pilot, prospective, controlled study, we investigated the features of muscle dysfunction in hypothyroidism by disease questionnaire, biochemical measures, and physical performance tests. MATERIALS AND METHODS: Fifty-seven consecutive patients with newly diagnosed hypothyroidism were enrolled, 27 subclinical (S-Hypo) and 30 overt (O-Hypo)...
April 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28433752/serotonergic-transmission-and-gap-junctional-coupling-in-proventricular-muscle-cells-in-the-american-cockroach-periplaneta-americana
#15
Ryoichi Yoshimura, Taeko Suetsugu, Yasuhisa Endo
The visceral muscle tissues of insects consist of striated muscle cells. The mechanisms responsible for delivering signals to the contractile muscles in the insect digestive tract remain unclear. We found that serotonergic nerves innervate the hemocoel surfaces of foregut and midgut muscles in the American cockroach. Electron microscopy of the neuromuscular junctions in the proventriculus (gizzard) revealed typical synaptic structures, the accumulation of large core/cored vesicles (neuropeptides) and small clear vesicle (neurotransmitter) at presynapses, and synaptic clefts...
April 19, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28432901/neuromuscular-rate-of-force-development-deficit-in-parkinson-disease
#16
Kelley G Hammond, Ronald F Pfeiffer, Mark S LeDoux, Brian K Schilling
BACKGROUND: Bradykinesia and reduced neuromuscular force exist in Parkinson disease. The interpolated twitch technique has been used to evaluate central versus peripheral manifestations of neuromuscular strength in healthy, aging, and athletic populations, as well as moderate to advanced Parkinson disease, but this method has not been used in mild Parkinson disease. This study aimed to evaluate quadriceps femoris rate of force development and quantify potential central and peripheral activation deficits in individuals with Parkinson disease...
April 11, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28432750/effect-of-feeding-two-rrr-alpha-tocopherol-formulations-on-serum-cerebrospinal-fluid-and-muscle-alpha-tocopherol-concentrations-in-horses-with-subclinical-vitamin-e-deficiency
#17
J C Brown, S J Valberg, M Hogg, C J Finno
BACKGROUND: Alpha tocopherol (α-TP) supplementation is recommended for the prevention of various equine neuromuscular disorders. Formulations available include RRR-α-TP acetate powder and a more expensive but rapidly water-dispersible liquid RRR-α-TP (WD α-TP). A cost-effective means to rapidly increase serum and CSF α-TP with WD-α-TP and then sustain concentrations with RRR-α-TP acetate has not been reported. OBJECTIVES: To evaluate serum, CSF and muscle α-TP concentrations in an 8-week dosing regimen where horses were transitioned from WD RRR-α-TP to RRR-α-TP acetate...
April 22, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28432606/neuromuscular-electrostimulation-a-new-therapeutic-option-to-improve-radio-cephalic-arteriovenous-fistula-maturation-in-end-stage-chronic-kidney-disease-patients
#18
Lucia Martinez, Vicent Esteve, Montserrat Yeste, Vicent Artigas, Secundino Llagostera
BACKGROUND: Radio-cephalic arteriovenous fistula (RCAVF) is the gold standard vascular access for end-stage chronic kidney disease patients. Exercises after arteriovenous fistula (AVF) creation improve maturation. No articles are published regarding neuromuscular electrostimulation (NMES) in AVF maturation. OBJECTIVES: To assess the usefulness of a NMES programme on RCAVF maturation process. METHODS: An 8-week single-centre prospective study...
April 21, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28431606/screening-for-cognitive-and-behavioural-impairment-in-amyotrophic-lateral-sclerosis-frequency-of-abnormality-and-effect-on-survival
#19
Zhouwei Xu, Ashwag Rafea S Alruwaili, Robert David Henderson, Pamela Ann McCombe
OBJECTIVE: To screen for cognitive and behavioural impairment in people with amyotrophic lateral sclerosis (ALS) and controls with neuromuscular disease and to correlate these with clinical features. METHODS: 108 people with ALS and 60 controls with other neuromuscular diseases were recruited and assessed with the Addenbrooke's cognitive examination-III (ACE-III), the frontal assessment battery (FAB), and the executive function component of the Edinburgh cognitive and behavioural ALS screen (ECAS)...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28427544/what-s-the-secret-behind-the-benefits-of-whole-body-vibration-training-in-patients-with-copd-a-randomized-controlled-trial
#20
Rainer Gloeckl, Inga Jarosch, Ulrike Bengsch, Magdalena Claus, Tessa Schneeberger, Vasileios Andrianopoulos, Jeffrey W Christle, Wolfgang Hitzl, Klaus Kenn
BACKGROUND: Several studies have shown that whole-body vibration training (WBVT) improves exercise capacity in patients with severe COPD. The aim of this study was to investigate the determinants of improved exercise capacity following WBVT. METHODS: Seventy-four COPD patients (FEV1: 34 ± 9%predicted) were recruited during a 3-week inpatient pulmonary rehabilitation (PR) program. Conventional endurance and strength exercises were supplemented with self-paced dynamic squat training sessions (4bouts*2min, 3times/wk)...
May 2017: Respiratory Medicine
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