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https://www.readbyqxmd.com/read/29781936/influence-of-adding-single-joint-exercise-to-a-multijoint-resistance-training-program-in-untrained-young-women
#1
Matheus Barbalho, Paulo Gentil, Rodolfo Raiol, James Fisher, James Steele, Victor Coswig
Barbalho, M, Gentil, P, Raiol, R, Fisher, J, Steele, J, and Coswig, V. Influence of adding single-joint exercise to a multijoint resistance training program in untrained young women. J Strength Cond Res XX(X): 000-000, 2018-The aim of the present study was to investigate the effects of adding single-joint (SJ) exercises to a multijoint (MJ) resistance training (RT) program on muscle strength and anthropometric measures of young women. Twenty untrained women were divided into a group that performed only MJ exercises or a group that performed both SJ and MJ exercises (MJ + SJ)...
May 15, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29780606/trismus-masticatory-myositis-and-antibodies-against-type-2m-fibers-in-a-mixed-breed-cat
#2
Stanley W Blazejewski, G Diane Shelton
Case summary: A 1-year-old male neutered mixed breed cat presented with a 2 month history of inability to fully open the mouth when yawning and decreased ability to prehend food. Physical examination revealed severe bilaterally symmetrical masticatory muscle atrophy, a restricted vertical mandibular range of motion of 11-12 mm, and a normal body condition score. Skull radiography was normal. A canine ELISA system against unique masticatory muscle fibers (2M antibody titer), was positive at 1:1000 (reference interval <1:100 in dogs, and was <1:100 using serum from five archived normal cats), indicating the presence of cross-reacting antibodies...
January 2018: JFMS Open Reports
https://www.readbyqxmd.com/read/29780317/one-channel-surface-electromyography-decomposition-for-muscle-force-estimation
#3
Wentao Sun, Jinying Zhu, Yinlai Jiang, Hiroshi Yokoi, Qiang Huang
Estimating muscle force by surface electromyography (sEMG) is a non-invasive and flexible way to diagnose biomechanical diseases and control assistive devices such as prosthetic hands. To estimate muscle force using sEMG, a supervised method is commonly adopted. This requires simultaneous recording of sEMG signals and muscle force measured by additional devices to tune the variables involved. However, recording the muscle force of the lost limb of an amputee is challenging, and the supervised method has limitations in this regard...
2018: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29778937/copper-ii-and-or-arsenite-induced-oxidative-stress-cascades-apoptosis-and-autophagy-in-the-skeletal-muscles-of-chicken
#4
Yu Wang, Hongjing Zhao, Yizhi Shao, Juanjuan Liu, Jinglun Li, Liyang Luo, Mingwei Xing
Arsenic (As) is a ubiquitous environmental toxin and robust inducer of oxidative stress (OxS). Copper (Cu) is an essential microelement, which participates in OxS as a cofactor for certain enzymes, with narrow optimal range between essential and toxic concentrations. However, their effects are rarely studied in chicken skeletal muscles, which have soaring per capita consumption andare susceptible to oxidative damage. In the present study, we demonstrated that the administration of copper sulfate (300 mg kg-1 ) or arsenite (30 mg kg-1 ) individually or their co-administration leads to varying degrees of OxS in the skeletal muscles of chickens...
May 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29776820/mechanical-interaction-between-neighboring-muscles-in-human-upper-limb-evidence-for-epimuscular-myofascial-force-transmission-in-humans
#5
Yasuhide Yoshitake, Daiki Uchida, Kosuke Hirata, Dean L Mayfield, Hiroaki Kanehisa
To confirm the existence of epimuscular myofascial force transmission in humans, this study examined if manipulating joint angle to stretch the muscle can alter the shear modulus of a resting adjacent muscle, and whether there are regional differences in this response. The biceps brachii (BB: manipulated muscle) and the brachialis (BRA: resting adjacent muscle) were deemed suitable for this study because they are neighboring, yet have independent tendons that insert onto different bones. In order to manipulate the muscle length of BB only, the forearm was passively set at supination, neutral, and pronation positions...
June 6, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29770180/factors-impacting-arthroscopic-rotator-cuff-repair-operational-throughput-time-at-an-ambulatory-care-center
#6
Emily J Curry, Catherine Logan, Kaytelin Suslavich, Kaitlyn Whitlock, Eric Berkson, Elizabeth Matzkin
Identifying patient factors influencing operational throughput time is becoming more imperative due to an increasing focus on value and cost savings in healthcare. The primary objective of this study was to determine patient factors influencing throughput time for primary rotator cuff repairs. Demographic information, medical history and operative reports of 318 patients from one ambulatory care center were retrospectively reviewed. Operating room set up, incision to closure and recovery room time were collected from anesthesia records...
March 29, 2018: Orthopedic Reviews
https://www.readbyqxmd.com/read/29769821/validity-and-reliability-of-surface-electromyography-measurements-from-a-wearable-athlete-performance-system
#7
Scott K Lynn, Casey M Watkins, Megan A Wong, Katherine Balfany, Daniel F Feeney
The Athos ® wearable system integrates surface electromyography (sEMG ) electrodes into the construction of compression athletic apparel. The Athos system reduces the complexity and increases the portability of collecting EMG data and provides processed data to the end user. The objective of the study was to determine the reliability and validity of Athos as compared with a research grade sEMG system. Twelve healthy subjects performed 7 trials on separate days (1 baseline trial and 6 repeated trials). In each trial subjects wore the wearable sEMG system and had a research grade sEMG system's electrodes placed just distal on the same muscle, as close as possible to the wearable system's electrodes...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29768337/variation-in-origin-of-the-long-head-of-the-biceps-brachii-tendon-in-a-cadaver-a-case-report
#8
Shuji Katsuki, Hayato Terayama, Ryuta Tanaka, Ning Qu, Osamu Tanaka, Kanae Umemoto, Kaori Suyama, Kou Sakabe
INTRODUCTION: In general, the long head of the biceps brachii (LHB) tendon arises from the supraglenoid tubercle in the shoulder joint, and it has an important stabilizing mechanism for the humeral head in the shoulder joint. This case demonstrates that even if the LHB tendon can be palpated outside of the shoulder joint, it may disappear in the intertubercular sulcus (IS) and in the glenohumeral (GH) joint because of abnormal articulation. PATIENT CONCERNS: This case involved the cadaver of an 82-year-old Japanese man (number 1936, cause of death: hepatocellular tumor), who was selected from the bodies used for gross anatomy practice at the Tokai University School of Medicine in 2017...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29768093/alterations-in-kinematics-and-muscle-activation-patterns-with-the-addition-of-a-kipping-action-during-a-pull-up-activity
#9
Christopher Dinunzio, Nathaniel Porter, John Van Scoy, Derrick Cordice, Ryan S McCulloch
Recently, addition of a gymnastics glide kip to a standard pull-up (SPU) has resulted in the kipping pull-up (KPU). Changes in muscle activation and kinematics were evaluated with eleven athletes performing sets of 5 SPU and 5 KPU. Surface electromyography of upper body and lower body muscles was recorded along with movement kinematics obtained via markers and motion tracking software. Most kinematic variables were significantly higher in the KPU including (KPU minus SPU deg): Max hip angle (48.8° ± 6.8°, p < 0...
May 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29767346/biomechanical-properties-of-suprapectoral-biceps-tenodesis-double-knotless-screw-fixation-is-superior-to-single-knotless-screw-fixation
#10
Chih-Kai Hong, Chih-Hsun Chang, Florence L Chiang, I-Ming Jou, Ping-Hui Wang, Hung-Nan Wang, Kai-Lan Hsu, Fa-Chuan Kuan, Wei-Ren Su
INTRODUCTION: The purpose of this study is to biomechanically evaluate a new technique of double knotless screw fixation for suprapectoral biceps tenodesis and compare the results with that of the single knotless screw fixation as well as the interference screw fixation. METHODS: 24 fresh-frozen human cadaveric shoulders with a mean age of 68.3 ± 9 years were studied. The specimens were randomly divided into three experimental biceps tenodesis groups (n = 8): single knotless screw, double knotless screw and interference screw...
May 16, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29760352/time-dependent-changes-in-local-and-serum-levels-of-inflammatory-cytokines-as-markers-for-incised-wound-aging-of-skeletal-muscles
#11
Mohammed Hassan Gaballah, Tetsuya Horita, Masataka Takamiya, Keisuke Yokoji, Mamiko Fukuta, Hideaki Kato, Yasuhiro Aoki
Wound age estimation is an important research field in forensic pathology. The expression levels of cytokines in the incised skeletal muscle were analyzed using a mouse model to explore the applicability for wound aging. A 5-mm long incisional wound was made at the biceps femoris muscle, and the muscle and serum were sampled at 6, 12, 24 and 48 hours after injury. Using a multiplex bead-based immunoassay, we measured the tissue levels of nine cytokines (IL-1β, IL-6, IL-7, CCL2, CCL3, CCL4, CXCL1, CXCL2, and CXCL10), which are all involved in the pathways of inflammatory response and tissue injury...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29757663/bicipital-tendinopathy-and-carpal-valgus-following-a-distant-direct-thoracoabdominal-skin-flap-in-a-german-shepherd-with-necrotizing-fasciitis
#12
Benjamin Mielke, Nicola Kulendra, Zoe Halfacree, Elvin Kulendra
A 4 mo old German shepherd dog was presented following an acute onset lameness and swelling of the thoracic limb. Clinical signs, surgical findings, and culture results were consistent with a diagnosis of necrotizing fasciitis. Initial management consisted of extensive surgical debridement, wound lavage, and bandaging. Surgical closure was achieved with an axillary fold flap and distant direct single-pedicle thoracoabdominal flap. Three mo later, following deterioration of the lameness that was associated with carpal valgus, carpal subluxation, and tendinopathy of the distal radial insertion of the biceps brachii tendon, a closing wedge pancarpal arthrodesis and tenotomy of the biceps brachii tendon was performed...
May 14, 2018: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29752188/new-equations-to-predict-body-fat-in-asian-chinese-adults-using-age-height-skinfold-thickness-and-waist-circumference
#13
Christiani Jeyakumar Henry, Shalini D/O Ponnalagu, Xinyan Bi, Sze-Yen Tan
BACKGROUND: Adiposity is an independent predictor of metabolic disease. However, highly accurate body fat assessment is not routinely done due to limited access to expensive and labor-intensive methods. OBJECTIVE: The aim of the study was to develop body fat prediction equations for Asian-Chinese adults using easily attainable anthropometric measurements. DESIGN: Prediction equations of body fat were developed using anthropometric and skinfold thickness measurements obtained from a cross-sectional study...
May 8, 2018: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/29745890/pattern-of-muscle-involvement-in-inclusion-body-myositis-a-sonographic-study
#14
Jemima Albayda, Lisa Christopher-Stine, Clifton O Bingham Iii, Julie J Paik, Eleni Tiniakou, Seth Billings, O Manny Uy, Philippe Burlina
OBJECTIVES: Imaging plays a role in myositis assessment by detecting muscle changes indicative of pathology. This study was conducted to determine the ultrasonographic pattern of muscle involvement in patients with inclusion body myositis (IBM) through an assessment of muscle echointensity. METHODS: Sixty-two individuals were consecutively studied, 18 with IBM, 16 with polymyositis or dermatomyositis and 28 normal controls. Standardised scans were completed bilaterally for the deltoids, biceps, flexor digitorum profundus (FDP), flexor carpi ulnaris, rectus femoris, tibialis anterior and gastrocnemius assessing for muscle echointensity changes...
May 8, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29745773/muscle-oxygenation-rather-than-vo-2-max-is-a-strong-predictor-of-performance-in-sprint-canoe-kayak
#15
Myriam Paquette, François Bieuzen, François Billaut
PURPOSE: This study aimed to characterize the relationships between muscle oxygenation and performance during on- and off-water tests in highly trained sprint canoe-kayak athletes. METHODS: Thirty athletes (19 kayakers and 11 canoeists) performed a maximal incremental test on a canoe or kayak ergometer for determination of VO2max and examination of the relation between peak power output (PPO) and physiological parameters. A subset of 21 athletes also performed a 200-m and a 500-m (for women) or 1000-m (for men) on-water time trials...
May 10, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29740557/hip-and-trunk-muscles-activity-during-nordic-hamstring-exercise
#16
Shideh Narouei, Atsushi Imai, Hiroshi Akuzawa, Kiyotaka Hasebe, Koji Kaneoka
The nordic hamstring exercise (NHE) is a dynamic lengthening hamstring exercise that requires trunk and hip muscles activation. Thigh muscles activation, specifically hamstring/quadriceps contractions has been previously examined during NHE. Trunk and hip muscles activity have not been enough studied. The aim of this study was to analyze of hip and trunk muscles activity during NHE. Surface electromyography (EMG) and kinematic data were collected during NHE. Ten healthy men with the age range of 21-36 years performed two sets of two repetitions with downward and upward motions each of NHE...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29740377/muscle-activation-during-grasping-with-and-without-motor-imagery-in-healthy-volunteers-and-patients-after-stroke-or-with-parkinson-s-disease
#17
Manuela Kobelt, Brigitte Wirth, Corina Schuster-Amft
Introduction: The present study assessed whether motor imagery (MI) produces electromyographic activation in specific muscles of the upper limb during a hand grasping and arm-lifting task in healthy volunteers, patients after stroke, or with Parkinson's disease. Electromyographic (EMG) activation was compared under three conditions: MI, physical execution (PE), and rest. The task is clinically relevant unilateral executed movement using open muscle chains. Methods: In a cross-sectional study EMG activation was measured in four muscles: M...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29737543/temozolomide-regresses-a-doxorubicin-resistant-undifferentiated-spindle-cell-sarcoma-patient-derived-orthotopic-xenograft-pdox-precision-oncology-nude-mouse-model-matching-the-patient-with-effective-therapy
#18
Kentaro Igarashi, Kei Kawaguchi, Tasuku Kiyuna, Kentaro Miyake, Masuyo Miyake, Yunfeng Li, Scott D Nelson, Sarah M Dry, Arun S Singh, Irmina A Elliott, Tara A Russell, Mark A Eckardt, Norio Yamamoto, Katsuhiro Hayashi, Hiroaki Kimura, Shinji Miwa, Hiroyuki Tsuchiya, Fritz C Eilber, Robert M Hoffman
Undifferentiated spindle-cell sarcoma (USCS) is a recalcitrant cancer, resistant to conventional chemotherapy. A patient with high-grade USCS from a striated muscle was implanted orthotopically in the right biceps femoris muscle of mice to establish a patient-derived orthotopic xenograft (PDOX) model. The PDOX models were randomized into the following groups when tumor volume reached 100 mm3 : G1, control without treatment; G2, doxorubicin (DOX) (3 mg/kg, intraperitoneal [i.p.] injection, weekly, for 2 weeks); G3, temozolomide (TEM) (25 mg/kg, p...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29736693/feasibility-testing-of-hydrophobic-carbon-electrodes-for-acquisition-of-underwater-surface-electromyography-data
#19
Hugo Posada-Quintero, Yeonsik Noh, Caitlin Eaton-Robb, John P Florian, Ki H Chon
Underwater surface electromyography (sEMG) signals are especially of interest for rehabilitation and sports medicine applications. Silver/silver chloride (Ag/AgCl) hydrogel electrodes, although the gold standard for sEMG data collection, require waterproofing for underwater applications. Having to apply waterproof tape over electrodes impedes the deployment of sEMG in immersed conditions. As a better alternative for underwater applications, we have developed carbon black/polydimethylsiloxane (CB/PDMS) electrodes for collecting sEMG signals under water...
May 7, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29736393/relationship-between-isometric-muscle-force-and-fractal-dimension-of-surface-electromyogram
#20
Matteo Beretta-Piccoli, Gennaro Boccia, Tessa Ponti, Ron Clijsen, Marco Barbero, Corrado Cescon
The relationship between fractal dimension of the surface electromyogram (sEMG) and the intensity of muscle contraction is still controversial in simulated and experimental conditions. To support the use of fractal analysis to investigate myoelectric fatigue, it is crucial to establish the interdependence between fractal dimension and muscle contraction intensity. We analyzed the behavior of fractal dimension, conduction velocity, mean frequency, and average rectified value in twenty-eight volunteers at nine levels of isometric force...
2018: BioMed Research International
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