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https://www.readbyqxmd.com/read/28339407/upper-extremity-muscle-activation-in-children-with-unilateral-cerebral-palsy-during-an-auditory-cued-repetitive-task-effects-on-bimanual-coordination
#1
Jeanne Charles
PURPOSE: The aim of this exploratory study was to investigate mirror muscle activation in the upper limbs of children with unilateral cerebral palsy during an auditory-cued repetitive squeezing task and to compare upper limb muscle activation patterns to typically developing peers engaged in the same task. METHODS: A convenience sample of six children with unilateral cerebral palsy and six typically developing peers (7-17 y) participated in the study. Muscle activity was measured using a 16 channel Zerowire EMG system (Noraxon, USA Inc...
2017: Journal of Pediatric Rehabilitation Medicine
https://www.readbyqxmd.com/read/28326351/effects-of-low-dose-ibuprofen-supplementation-and-resistance-training-on-bone-and-muscle-in-postmenopausal-women-a-randomized-controlled-trial
#2
Whitney R D Duff, Saija A Kontulainen, Darren G Candow, Julianne J Gordon, Riley S Mason, Regina Taylor-Gjevre, Bindu Nair, Michael Szafron, Adam D G Baxter-Jones, Gordon A Zello, Philip D Chilibeck
PURPOSE: To compare the effects of nine months of exercise training and ibuprofen supplementation (given immeditately after exercise sessions) on bone and muscle in postmenopausal women. METHODS: In a double-blind randomized trial, participants (females: n = 90, mean age 64.8, SD 4.3 years) were assigned (computer generated, double blind) to receive supervised resistance training or stretching 3 days/week, and ibuprofen (400 mg, post-exercise) or placebo (i...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28325692/arthroscopic-repair-of-isolated-partial-and-full-thickness-upper-third-subscapularis-tendon-tears-minimum-2-year-outcomes-after-single-anchor-repair-and-biceps-tenodesis
#3
J Christoph Katthagen, Alexander R Vap, Dimitri S Tahal, Marilee P Horan, Peter J Millett
PURPOSE: To investigate outcomes of arthroscopic single-anchor repair and biceps tenodesis of partial- and full-thickness tears of the upper third subscapularis (SSC). METHODS: Thirty-three patients with arthroscopically confirmed isolated SSC tears, Lafosse type I (>50% of the tendon thickness involved), or type II were included. All patients underwent arthroscopic subcoracoid decompression, coracoplasty if the coracohumeral distance was narrowed, biceps tenodesis, and a single-anchor repair of the upper third SSC...
March 18, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28325029/noninvasive-eeg-correlates-of-overground-and-stair-walking
#4
Justin A Brantley, Trieu Phat Luu, Recep Ozdemir, Fangshi Zhu, Anna T Winslow, Helen Huang, Jose L Contreras-Vidal
Automated walking intention detection remains a challenge in lower-limb neuroprosthetic systems. Here, we assess the feasibility of extracting motor intent from scalp electroencephalography (EEG). First, we evaluated the corticomuscular coherence between central EEG electrodes (C1, Cz, C2) and muscles of the shank and thigh during walking on level ground and stairs. Second, we trained decoders to predict the linear envelope of the surface electromyogram (EMG). We observed significant EEG-led corticomuscular coupling between electrodes and sEMG (tibialis anterior) in the high delta (3-4 Hz) and low theta (4-5 Hz) frequency bands during level walking, indicating efferent signaling from the cortex to peripheral motor neurons...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324973/force-controlled-ultrasound-to-measure-passive-mechanical-properties-of-muscle-in-duchenne-muscular-dystrophy
#5
Anne J Pigula, Jim S Wu, Matthew W Gilbertson, Basil T Darras, Seward B Rutkove, Brian W Anthony
The purpose of this study is to assess differences in skeletal muscle compressibility between patients with Duchenne muscular dystrophy (DMD) and normal subjects. The transverse passive mechanical properties of muscle, particularly those related to stiffness and elasticity, can be measured using force-controlled ultrasound. We acquired ultrasound videos of muscle compression under known pressures in the biceps and quadriceps in 23 boys with DMD and 20 age-matched healthy controls. We calculated the bulk linear spring constant, nonlinear stress-strain response, and average Young's modulus for each...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28321478/the-anterolateral-complex-in-anterior-cruciate-ligament-deficient-knees-demonstrate-sonographic-abnormalities-on-high-resolution-sonography
#6
Masahito Yoshida, Elmar Herbst, Macio Albers, Volker Musahl, Freddie H Fu, Kentaro Onishi
PURPOSE: The presence of anterolateral ligament of the knee is still controversial, and some physicians prefer to call this structure anterolateral complex (ALC) to infer plural nature of structures involved. The purpose of this study was to describe the scanning techniques and to classify various sonographic appearances of the tibial-side ALC of the knee in subjects with anterior cruciate ligament (ACL) injury. It was hypothesized that sonographic abnormity of the ALC would be associated with ACL injury history...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28320672/spatial-analysis-of-multichannel-surface-emg-in-hemiplegic-stroke
#7
Ghulam Rasool, Babak Afsharipour, Nina Suresh, William Z Rymer
We investigated spatial activation patterns of upper extremity muscles during isometric force generation in both intact persons and in hemispheric stroke survivors. We used a 128-channel surface electromyogram (EMG) grid to record the electrical activity of biceps brachii muscles during these contractions. EMG data were processed to develop 2-dimensional root mean square (RMS) maps of muscle activity. Our objective was to determine whether motor impairments following stroke were associated with changes in the muscle activity maps and in the spatial distribution of muscular activation...
March 15, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28317895/upregulation-of-skeletal-muscle-pgc-1%C3%AE-through-the-elevation-of-cyclic-amp-levels-by-cyanidin-3-glucoside-enhances-exercise-performance
#8
Toshiya Matsukawa, Hideko Motojima, Yuki Sato, Shinya Takahashi, Myra O Villareal, Hiroko Isoda
Regular exercise and physical training enhance physiological capacity and improve metabolic diseases. Skeletal muscles require peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the process of their adaptation to exercise owing to PGC-1α's ability to regulate mitochondrial biogenesis, angiogenesis, and oxidative metabolism. Cyanidin-3-glucoside (Cy3G) is a natural polyphenol and a nutraceutical factor, which has several beneficial effects on human health. Here, the effect of Cy3G on exercise performance and the underlying mechanisms involved were investigated...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28316590/rehabilitation-using-guided-cerebral-plasticity-of-a-brachial-plexus-injury-treated-with-intercostal-and-phrenic-nerve-transfers
#9
Lars B Dahlin, Gert Andersson, Clas Backman, Hampus Svensson, Anders Björkman
Recovery after surgical reconstruction of a brachial plexus injury using nerve grafting and nerve transfer procedures is a function of peripheral nerve regeneration and cerebral reorganization. A 15-year-old boy, with traumatic avulsion of nerve roots C5-C7 and a non-rupture of C8-T1, was operated 3 weeks after the injury with nerve transfers: (a) terminal part of the accessory nerve to the suprascapular nerve, (b) the second and third intercostal nerves to the axillary nerve, and (c) the fourth to sixth intercostal nerves to the musculocutaneous nerve...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28316588/alterations-of-muscle-activation-pattern-in-stroke-survivors-during-obstacle-crossing
#10
Chenming Ma, Na Chen, Yurong Mao, Dongfeng Huang, Rong Song, Le Li
OBJECTIVE: This study investigates changes in the neuromuscular activation pattern of the lower limb muscles in stroke survivors when crossing obstacles of three different heights. METHODS: Eight stroke survivors and eight age-, height-, and gender-matched healthy controls were recruited and instructed to cross over obstacles with heights of 10, 20, and 30% leg length. Surface electromyography (EMG) signals were recorded from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and medial gastrocnemius (MG) of both limbs...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28314618/drop-punt-kicking-induces-eccentric-knee-flexor-weakness-associated-with-reductions-in-hamstring-electromyographic-activity
#11
Steven J Duhig, Morgan D Williams, Geoffrey M Minett, David Opar, Anthony J Shield
OBJECTIVES: To examine the effect of 100 drop punt kicks on isokinetic knee flexor strength and surface electromyographic activity of bicep femoris and medial hamstrings. DESIGN: Randomized control study. METHODS: Thirty-six recreational footballers were randomly assigned to kicking or control groups. Dynamometry was conducted immediately before and after the kicking or 10min of sitting (control). RESULTS: Eccentric strength declined more in the kicking than the control group (p<0...
September 20, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28314091/changes-in-muscle-architecture-of-biceps-femoris-induced-by-eccentric-strength-training-with-nordic-hamstring-exercise
#12
Diego Alonso-Fernandez, Pedro Docampo-Blanco, Juan Martinez-Fernandez
Eccentric strength training alters muscle architecture, but it is also an important factor for the prevention of hamstring injuries. The purpose was to determine the architectural adaptations of the Biceps Femoris long head (BFlh) after eccentric strength training with Nordic Hamstring exercise (NHE), followed by a subsequent detraining period. The participants in this intervention (n = 23) completed a period of 13 weeks consisting of a first week of control and prior training, followed by 8 weeks of eccentric strength training with NHE, and concluding with a 4-week period of detraining...
March 17, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28306516/identification-and-classification-of-upper-limb-motions-using-pca
#13
Karan Veer, Renu Vig
This paper describes the utility of principal component analysis (PCA) in classifying upper limb signals. PCA is a powerful tool for analyzing data of high dimension. Here, two different input strategies were explored. The first method uses upper arm dual-position-based myoelectric signal acquisition and the other solely uses PCA for classifying surface electromyogram (SEMG) signals. SEMG data from the biceps and the triceps brachii muscles and four independent muscle activities of the upper arm were measured in seven subjects (total dataset=56)...
March 15, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28304118/causes-of-pain-and-loss-of-function-in-rotator-cuff-disease-analysis-of-1383-cases
#14
Anthony Maher, Warren Leigh, Matt Brick, Simon Young, Michael Caughey
BACKGROUND: The New Zealand Rotator Cuff Registry is a multicentre, nationwide prospective study of rotator cuff repairs established in March 2009. METHODS: A total of 1383 rotator cuff repairs were included in this study, all with completed baseline Flex-SF scores, pain scores and standardized operative forms. RESULTS: Increasing tear size and tear retraction, over 4 cm, were associated with decreasing Flex-SF scores but not pain. Tear area (a composite of tear size and retraction) is increased with advancing age, male gender and a traumatic history but not with smoking...
March 17, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28300287/analysis-of-stroma-labeling-during-multiple-passage-of-a-sarcoma-imageable-patient-derived-orthotopic-xenograft-ipdox-in-red-fluorescent-protein-transgenic-nude-mice
#15
Tasuku Kiyuna, Takashi Murakami, Yasunori Tome, Kei Kawaguchi, Kentaro Igarashi, Kentaro Miyake, Fuminori Kanaya, Arun Singh, Fritz C Eilber, Robert M Hoffman
A patient-derived orthotopic xenograft (PDOX) model of undifferentiated pleomorphic sarcoma (UPS) was previously established that acquired red fluorescent protein (RFP)-expressing stroma by growth in an RFP transgenic nude mouse. In the present study, an imageable PDOX model (iPDOX) of UPS was established by orthotopic implantation in the biceps femoris of transgenic RFP nude mice. After the tumors grew to a diameter of 10 mm, they were harvested and the brightest portion of the tumors were subsequently orthotopically transplanted to both RFP and non-colored nude mice...
March 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28299316/ultrasonographic-validation-of-anatomical-landmarks-for-localization-of-the-tendon-of-the-long-head-of-biceps-brachii
#16
Saiyun Hou, John Harrell, Sheng Li
Objectives. To establish anatomical landmarks for biceps tendon groove localization based on intrinsic anatomical relations and to validate the localization with ultrasonographic measurement. Design. Perspective, observational, single-blinded pilot study. Participants. 25 healthy male and female volunteers ages 24-50 years. Methods. We used two anatomical landmarks, the medial epicondyle vertical line related landmark and the coracoid process landmark. The distance from the groove skin mark to the medial epicondyle vertical line and the coracoid process was measured horizontally and was measured at 0° and 45° of shoulder external rotation, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28298673/single-step-extraction-and-derivatization-of-intramuscular-lipids-for-fatty-acid-ultra-fast-gc-analysis-application-on-pig-thigh
#17
Eleonora Laura De Paola, Giuseppe Montevecchi, Francesca Masino, Andrea Antonelli, Domenico Pietro Lo Fiego
Two different methods for single step transesterification from pig meat without fat extraction have been tested. Freeze-drying of the meat with and without anhydrous salt, followed by a base-catalyzed transmethylation (KOH/MeOH) was carried out. Both methods were compared with the standard Folch procedure of fat extraction followed by transmethylation. The methods were tested on a complete sample set of biceps femoris of pig thigh, used for the production of dry-cured ham. The set was divided in three subgroups according to total fat content...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28295686/increased-insulin-stimulated-glucose-uptake-in-both-leg-and-arm-muscles-after-sprint-interval-and-moderate-intensity-training-in-subjects-with-type-2-diabetes-or-prediabetes
#18
Tanja J Sjöros, Marja A Heiskanen, Kumail K Motiani, Eliisa Löyttyniemi, Jari-Joonas Eskelinen, Kirsi A Virtanen, Nina J Savisto, Olof Solin, Jarna C Hannukainen, Kari K Kalliokoski
We investigated the effects of sprint interval (SIT) and moderate intensity continuous training (MICT) on glucose uptake (GU) during hyperinsulinemic euglycemic clamp and fatty acid uptake (FAU) at fasting state in thigh and arm muscles in subjects with type 2 diabetes (T2D) or prediabetes. Twenty-six patients (age 49, SD 4; 10 women) were randomly assigned into two groups: SIT (n=13), and MICT (n=13). The exercise in the SIT group consisted of 4-6 x 30 s of all-out cycling with 4 min recovery and in the MICT group 40-60 min cycling at 60% of VO2peak ...
March 13, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28293499/proximal-versus-distal-nerve-transfer-for-biceps-reinnervation-a-comparative-study-in-a-rat-s-brachial-plexus-injury-model
#19
Aleksandra M McGrath, Johnny Chuieng-Yi Lu, Tommy Naj-Jen Chang, Frank Fang, David Chwei-Chin Chuang
BACKGROUND: The exact role of proximal and distal nerve transfers in reconstruction strategies of brachial plexus injury remains controversial. We compared proximal with distal nerve reconstruction strategies in a rat model of brachial plexus injury. METHODS: In rats, the C6 spinal nerve with a nerve graft (proximal nerve transfer model, n = 30, group A) and 50% of ulnar nerve (distal nerve transfer model, n = 30, group B) were used as the donor nerves. The targets were the musculocutaneous nerve and the biceps muscle...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28293469/motor-unit-potentials-of-the-erector-spinae-muscle-by-concentric-needle-electromyography
#20
Andreas Posa, Izabela Niśkiewicz, Alexander Emmer, Yorck Kluge, Malte E Kornhuber
INTRODUCTION: The needle electromyography (EMG) serves to supply additional information in patients with suspected neuromuscular disorders. We aimed to provide motor unit potential (MUP) data by concentric needle EMG in the erector spinae (ES) in comparison with biceps brachii (BB) and lateral vastus (LV). METHODS: Electromyography MUP data (n) were obtained in ES (517), BB (539), and LV (627) in 32 healthy volunteers (16f). RESULTS: Motor unit potential data: amplitude (μV) 393 ± 174 (ES), 375 ± 162 (BB), and 577 ± 304 (LV); duration (ms) 10...
March 2017: Brain and Behavior
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