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https://www.readbyqxmd.com/read/28933713/adaptations-associated-with-an-after-school-strength-and-conditioning-program-in-middle-school-aged-boys-a-quasi-experimental-design
#1
Brennan J Thompson, Matt S Stock, Jacob A Mota, Alexander S Drusch, Ryan N DeFranco, Tyler R Cook, Matthew A Hamm
Thompson, BJ, Stock, MS, Mota, JA, Drusch, AS, DeFranco, RN, Cook, TR, and Hamm, MA. Adaptations associated with an after-school strength and conditioning program in middle-school aged boys: a quasi-experimental design. J Strength Cond Res 31(10): 2840-2851, 2017-High-intensity strength and conditioning programs aimed at improving youth performance are becoming increasingly prevalent. The purpose of this study was to investigate the effects of a 16-week after-school strength and conditioning program on performance and body composition in middle-school-aged boys...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28931998/trunk-function-in-hemiplegic-wheelchair-users-when-using-wheelchair-cushions
#2
Kyohei Kawada
[Purpose] The purpose of this study was to investigate adapting wheelchair cushions to hemiplegic individuals based on trunk function and a single-leg driving motion. [Subjects and Methods] Subjects were 18 hemiplegic adults who were able to use and sit up in a wheelchair. Subjects were grouped into Able and Unable groups according to the Functional Assessment for Control of the Trunk (FACT). The posterior pelvic tilt angle and the driving speed and muscle activity at the long head of the biceps femoris at the start of wheelchair use were measured for three wheelchair cushion conditions, and FACT factors and cushion factors were then analyzed...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28931547/the-plateau-in-the-nirs-derived-hhb-signal-near-the-end-of-a-ramp-incremental-test-does-not-indicate-the-upper-limit-of-o2-extraction-in-the-vastus-lateralis
#3
Erin Calaine Inglis, Danilo Iannetta, Juan M Murias
This study aimed to examine, at the level of the active muscles, whether the plateau in oxygen (O2) extraction normally observed near the end of a ramp incremental (RI) exercise test to exhaustion, is caused by the achievement of an upper limit in O2 extraction. 11 healthy men (27.3 ± 3.0 years; 81.6 ± 8.1 kg; 183.9 ± 6.3 cm) performed a RI cycling test to exhaustion. O2 extraction of the vastus lateralis (VL) was measured continuously throughout the test using the near-infrared spectroscopy (NIRS)-derived deoxygenated hemoglobin [HHb] signal...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28931439/effects-of-whole-body-vibration-exercise-on-neuromuscular-function-for-individuals-with-knee-osteoarthritis-study-protocol-for-a-randomized-controlled-trial
#4
Zhangqi Lai, Xueqiang Wang, Seullee Lee, Xihe Hou, Lin Wang
BACKGROUND: Knee osteoarthritis (KOA) is a leading cause of public disability. Neuromuscular function contributes to the development and/or progression of KOA. Whole body vibration (WBV) exercise improve the neuromuscular function of patients with neurological disorders and even that of older patients with limited exercise options. Therefore, WBV exercise may offer an efficient and alternative treatment for individuals with KOA. However, the effects of WBV training on the neuromuscular function of individuals with KOA remain unclear...
September 20, 2017: Trials
https://www.readbyqxmd.com/read/28930916/peripheral-muscle-near-infrared-spectroscopy-nirs-variables-are-altered-early-in-septic-shock
#5
Diego Orbegozo, Fuhong Su, Keliang Xie, Lokmane Rahmania, Fabio Silvio Taccone, Daniel De Backer, Jean-Louis Vincent, Jacques Creteur
BACKGROUND: Non-invasive evaluation of muscle perfusion using near infrared spectroscopy (NIRS) coupled with a vascular occlusion test (VOT) may provide an early and simple marker of altered perfusion and microcirculatory function in sepsis. OBJECTIVE: To compare the time-course of NIRS-derived variables with systemic measures of perfusion in an experimental model of peritonitis. METHODS: Peritonitis was induced in eight anesthetized, mechanically ventilated, adult sheep (24-34 Kg), by injecting autologous feces into the peritoneal cavity...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28928367/characterization-of-a-new-member-of-iridoviridae-shrimp-hemocyte-iridescent-virus-shiv-found-in-white-leg-shrimp-litopenaeus-vannamei
#6
Liang Qiu, Meng-Meng Chen, Xiao-Yuan Wan, Chen Li, Qing-Li Zhang, Ruo-Yu Wang, Dong-Yuan Cheng, Xuan Dong, Bing Yang, Xiu-Hua Wang, Jian-Hai Xiang, Jie Huang
A newly discovered iridescent virus that causes severe disease and high mortality in farmed Litopenaeus vannamei in Zhejiang, China, has been verified and temporarily specified as shrimp hemocyte iridescent virus (SHIV). Histopathological examination revealed basophilic inclusions and pyknosis in hematopoietic tissue and hemocytes in gills, hepatopancreas, periopods and muscle. Using viral metagenomics sequencing, we obtained partial sequences annotated as potential iridoviridae. Phylogenetic analyses using amino acid sequences of major capsid protein (MCP) and ATPase revealed that it is a new iridescent virus but does not belong to the five known genera of Iridoviridae...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928032/reliability-of-surface-electromyography-activity-of-gluteal-and-hamstring-muscles-during-sub-maximal-and-maximal-voluntary-isometric-contractions
#7
Melanie D Bussey, Daniela Aldabe, Divya Adhia, Ramakrishnan Mani
BACKGROUND: Normalizing to a reference signal is essential when analysing and comparing electromyography signals across or within individuals. However, studies have shown that MVC testing may not be as reliable in persons with acute and chronic pain. OBJECTIVES: The purpose of this study was to compare the test-retest reliability of the muscle activity in the biceps femoris and gluteus maximus between a novel sub-MVC and standard MVC protocols. METHODS: This study utilized a single individual repeated measures design with 12 participants performing multiple trials of both the sub-MVC and MVC tasks on two separate days...
September 11, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28927669/are-the-hamstrings-from-the-drive-leg-or-landing-leg-more-active-in-baseball-pitchers-an-electromyographic-study
#8
Brandon J Erickson, Antonia Zaferiou, Peter N Chalmers, Deana Ruby, Phillip Malloy, Timothy J Luchetti, Nikhil N Verma, Anthony A Romeo
BACKGROUND: Ulnar collateral ligament reconstruction (UCLR) has become a common procedure among baseball players of all levels. There are several graft choices in performing UCLR, one of which is a hamstring (gracilis or semitendinosus) autograft. It is unclear whether the hamstring muscle from a pitcher's drive leg (ipsilateral side of the UCLR) or landing leg (contralateral side of the UCLR) is more active during the pitching motion. We hypothesized that the landing leg semitendinosus will be more electromyographically active than the drive leg...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28926470/acceptability-and-practicality-of-the-turkish-translation-of-pediatric-gait-arm-legs-and-spine-in-turkish-children
#9
Ezgi Deniz Batu, Özge Keniş Coşkun, Hafize Emine Sönmez, Duygu Karali, Elif Arslanoğlu Aydin, Yelda Bilginer, Evrim Karadağ Saygi, Seza Özen
BACKGROUND: The pediatric Gait, Arms, Leg, and Spine (pGALS) is a practical questionnaire for musculoskeletal (MSK) system evaluation in school-age children. OBJECTIVE: The aim of this study was to evaluate the acceptability/practicality of pGALS Turkish translation in Turkey (cross-sectional study). METHODS: The Turkish translation of pGALS was administered to children (4-18 years) who attended to the Pediatric Emergency Department of Hacettepe University, Ankara, Turkey, and the outpatient clinic of the Physical Therapy and Rehabilitation Department of Marmara University, Istanbul, Turkey, during 1 month in 2016...
September 19, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28926379/tendon-length-calf-muscle-atrophy-and-strength-deficit-after-acute-achilles-tendon-rupture-long-term-follow-up-of-patients-in-a-previous-study
#10
Juuso Heikkinen, Iikka Lantto, Juuso Piilonen, Tapio Flinkkilä, Pasi Ohtonen, Pertti Siira, Vesa Laine, Jaakko Niinimäki, Ari Pajala, Juhana Leppilahti
BACKGROUND: In this prospective study, we used magnetic resonance imaging (MRI) to assess long-term Achilles tendon length, calf muscle volume, and muscle fatty degeneration after surgery for acute Achilles tendon rupture. METHODS: From 1998 to 2001, 60 patients at our center underwent surgery for acute Achilles tendon rupture followed by early functional postoperative rehabilitation. Fifty-five patients were reexamined after a minimum duration of follow-up of 13 years (mean, 14 years), and 52 of them were included in the present study...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28924737/contribution-to-the-anatomical-nomenclature-concerning-lower-limb-anatomy
#11
David Kachlik, Vladimir Musil, Vaclav Baca
PURPOSE: The aim of this article is to extend and revise the sections of Terminologia Anatomica (TA) dealing with the lower limb structures and to justify the use of newly proposed anatomical terms in clinical medicine, education, and research. METHODS: Anatomical terms were gathered during our educational experience from anatomical textbooks and journals and compared with the four previous editions of the official Latin anatomical nomenclature. RESULTS: The authors summarise 270 terms with their definitions and explanations for both constant and variable morphological structures (bones, joints, muscles, vessels, nerves and superficial structures) of the hip, thigh, knee, leg, ankle, and foot completed with several grammatical remarks and some general anatomical terms...
September 18, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28919630/deep-vein-thrombosis-in-a-post-coronary-artery-bypass-grafting-patient-successful-conservative-management
#12
S H Sarker, A K Miraj, M A Hossain, M Aftabuddin
Deep vein thrombosis is an alarming medical emergency. Deep vein thrombosis or deep venous thrombosis (DVT) is the formation of a blood clot (thrombus) within a deep vein predominantly in the legs. Post-Coronary Artery Bypass Grafting deep vein thrombosis is a very rare medical condition relatively in Asian. Approximately 80% of deep vein thrombosis (DVTs) is clinically asymptomatic, 20% of those that actually demonstrate signs and symptoms can be easily confused with symptoms of other commonly presenting musculoskeletal disorders...
July 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28919457/patterns-of-botulinum-toxin-treatment-for-spasticity-and-bleeding-complications-in-patients-with-thrombotic-risk
#13
Chetan P Phadke, Vivekanand Thanikachalam, Farooq Ismail, Chris Boulias
The purpose of this study was to assess the prevalence of compartment syndrome or major bleeding episodes and compare compartment syndrome, patient and intervention characteristics in 110 patients with stroke (treated with Warfarin, new oral anticoagulants, antiplatelet, or no anticoagulants) treated for spasticity in deep leg compartment muscles with botulinum toxin injections [onabotulinumtoxinA (n = 77); incobotulinumtoxinA (n = 33)]. We reviewed 674 injection cycles (range 1-25 cycles per patient) and found no cases of compartment syndrome in any patient groups...
September 15, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28918423/non-discriminant-relationships-between-leg-muscle-strength-mass-and-gait-performance-in-healthy-young-and-old-adults
#14
Thomas Muehlbauer, Urs Granacher, Ron Borde, Tibor Hortobágyi
BACKGROUND: Gait speed declines with increasing age, but it is unclear if gait speed preferentially correlates with leg muscle strength or mass. OBJECTIVE: We determined the relationship between gait speed and (1) leg muscle strength measured at 3 lower extremity joints and (2) leg lean tissue mass (LTM) in healthy young (age: 25 years, n = 20) and old (age: 70 years, n = 20) adults. METHODS: Subjects were tested for maximal isokinetic hip, knee, and ankle extension torque, leg LTM by bioimpedance, and gait performance (i...
September 16, 2017: Gerontology
https://www.readbyqxmd.com/read/28918362/there-are-no-no-responders-to-low-or-high-resistance-training-volumes-among-older-women
#15
Matheus de Siqueira Mendes Barbalho, Paulo Gentil, Mikel Izquierdo, James Fisher, James Steele, Rodolfo de Azevedo Raiol
OBJECTIVES: To assess the prevalence of non-responders to different tests and to compare the effects of different resistance training (RT) volumes on muscle strength, anthropometric and functional performance of older women. METHODS: Three hundred seventy six women performed 12weeks of RT with either low or high volume (LV, 71.29±5.77years and HV 69.73±5.88years, respectively). Both groups performed the same exercises, and all parameters were held constant except for the number of sets performed per week...
September 13, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28916706/the-expression-of-ldh-c-in-the-skeletal-muscle-of-plateau-pika-ochotona-curzoniae-enhances-adaptation-to-a-hypoxic-environment
#16
Zhi F An, Deng B Wei, Lian Wei, Yang Wang, Lin N Wei
The plateau pika (Ochotona curzoniae) is a species of sprint-running alpine animals in the Qinghai-Tibet Plateau, which is a harsh highland hypoxic environment. Ldh-c is expressed in the testis, sperm and somatic tissues of plateau pika. To reveal the role and physiological mechanisms of sperm-specific lactate dehydrogenase (LDH-C4), in plateau pika to adapt to hypoxic environment, an adenoviral line of pMultiRNAi-Ldhc was constructed and injected into the bilateral biceps femoris of the hind legs. The swimming times of the pikas, and the Ldh-c expression levels, total LDH activities and ATP levels in skeletal muscle, were measured after the pikas were raised in the trapped site for 5 days...
September 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28916544/muscle-deficits-in-rheumatoid-arthritis-contribute-to-inferior-cortical-bone-structure-and-trabecular-bone-mineral-density
#17
Joshua F Baker, Jin Long, Sogol Mostoufi-Moab, Michele Denburg, Erik Jorgenson, Prerna Sharma, Babette S Zemel, Elena Taratuta, Said Ibrahim, Mary B Leonard
OBJECTIVE: Rheumatoid arthritis (RA) is associated with muscle loss, osteoporosis, and fracture. We examined associations between skeletal muscle mass, strength, and quality and trabecular and cortical bone deficits in patients with RA and healthy controls. METHODS: Participants, ages 18-75 years, completed whole-body dual-energy x-ray absorptiometry and peripheral quantitative computed tomography (pQCT) of the tibia to quantify appendicular lean mass and fat mass indices (ALMI, FMI), muscle density at the lower leg, trabecular bone density, and cortical bone thickness...
September 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28915821/assessment-of-the-underlying-systems-involved-in-standing-balance-the-additional-value-of-electromyography-in-system-identification-and-parameter-estimation
#18
J H Pasma, J van Kordelaar, D de Kam, V Weerdesteyn, A C Schouten, H van der Kooij
BACKGROUND: Closed loop system identification (CLSIT) is a method to disentangle the contribution of underlying systems in standing balance. We investigated whether taking into account lower leg muscle activation in CLSIT could improve the reliability and accuracy of estimated parameters identifying the underlying systems. METHODS: Standing balance behaviour of 20 healthy young participants was measured using continuous rotations of the support surface (SS). The dynamic balance behaviour obtained with CLSIT was expressed by sensitivity functions of the ankle torque, body sway and muscle activation of the lower legs to the SS rotation...
September 15, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28915224/systolic-and-diastolic-left-ventricular-mechanics-during-and-after-resistance-exercise
#19
Eric J Stöhr, Mike Stembridge, Rob Shave, T Jake Samuel, Keeron Stone, Joseph I Esformes
PURPOSE: To improve the current understanding of the impact of resistance exercise on the heart, by examining the acute responses of left ventricular (LV) strain, twist, and untwisting rate ("LV mechanics"). METHODS: LV echocardiographic images were recorded in systole and diastole before, during and immediately after (7-12 s) double-leg press exercise at two intensities (30% and 60% of maximum strength, one-repetition maximum). Speckle tracking analysis generated LV strain, twist, and untwisting rate data...
October 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28914503/testosterone-therapy-preserves-muscle-strength-and-power-in-aging-men-with-type-2-diabetes-a-randomized-controlled-trial
#20
L V Magnussen, L G Hvid, A P Hermann, D M Hougaard, B Gram, P Caserotti, M S Andersen
The purpose of the study was to evaluate whether testosterone replacement therapy improves muscle mechanical and physical function in addition to increasing lean leg mass and total lean body mass in aging men with type 2 diabetes and lowered bio-available testosterone (BioT) levels. Thirty-nine men aged 50-70 years with type 2 diabetes and BioT levels <7.3 nmol/L were included from an academic tertiary-care medical center. Patients were randomized to testosterone gel (testosterone replacement therapy, n = 20) or placebo (n = 19) for 24 weeks, applying a double-blinded design...
September 2017: Andrology
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