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https://www.readbyqxmd.com/read/28079706/ibuprofen-before-exercise-does-not-prevent-cortical-bone-adaptations-to-training
#1
Vanessa D Sherk, R Dana Carpenter, Erin D Giles, Janine A Higgins, Robera M Oljira, Ginger C Johnson, Samuel Mills, Paul S MacLean
: Using a nonsteroidal anti-inflammatory drug (NSAID) before a single bout of mechanical loading can reduce bone formation response. It is unknown whether this translates to an attenuation of bone strength and structural adaptations to exercise training. PURPOSE: To determine whether NSAID use before exercise prevents increases in bone structure and strength in response to weight-bearing exercise. METHODS: Adult female Wistar rats (n=43) were randomized to Ibuprofen (IBU) or Vehicle (VEH) and Exercise (EX) or Sedentary (SED) groups in a 2x2 (drug, activity) ANCOVA design with body weight as the covariate, and data are reported as mean±SE...
January 10, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28073606/load-dependent-hyperdeactivation-of-the-default-mode-network-in-people-with-schizophrenia
#2
Britta Hahn, Alexander N Harvey, James M Gold, Thomas J Ross, Elliot A Stein
Schizophrenia is associated with impairment in a range of cognitive functions. Neuroimaging studies have reported lower, but also higher, task-induced activation accompanying impaired performance. Differences in task-load and the ability of people with schizophrenia (PSZ) to stay engaged in the cognitive operations probed appear to underlie such discrepancies. Similarly, task-induced deactivation of the default mode network (DMN) was weaker in PSZ relative to healthy control subjects (HCS) in most studies, but some reported greater deactivation...
January 7, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28068520/impact-loading-following-quadriceps-strength-training-in-individuals-with-medial-knee-osteoarthritis-and-varus-alignment
#3
Crystal O Kean, Rana S Hinman, Tim V Wrigley, Boon-Whatt Lim, Kim L Bennell
BACKGROUND: Greater impact loading at initial contact is postulated to play a role in the progression of osteoarthritis. Quadriceps weakness is common in individuals with knee osteoarthritis and may contribute to high impact loading. The purpose of this study was to examine the effects of quadriceps strengthening on impact loading parameters. METHODS: Data from 97 individuals with knee osteoarthritis who participated in a randomized clinical trial examining effects of a 12-week quadriceps strengthening program was used to conduct this secondary exploratory analysis...
January 4, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28066520/gait-training-interventions-for-lower-extremity-amputees-a-systematic-literature-review
#4
M Jason Highsmith, Casey R Andrews, Claire Millman, Ashley Fuller, Jason T Kahle, Tyler D Klenow, Katherine L Lewis, Rachel C Bradley, John J Orriola
Lower extremity (LE) amputation patients who use prostheses have gait asymmetries and altered limb loading and movement strategies when ambulating. Subsequent secondary conditions are believed to be associated with gait deviations and lead to long-term complications that impact function and quality of life as a result. The purpose of this study was to systematically review the literature to determine the strength of evidence supporting gait training interventions and to formulate evidence statements to guide practice and research related to therapeutic gait training for lower extremity amputees...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28064225/influence-of-mechanical-force-on-bone-matrix-proteins-in-ovariectomised-mice-and-osteoblast-like-mc3t3-e1-cells
#5
Meng Zhang, Shintaro Ishikawa, Tomoko Inagawa, Hideshi Ikemoto, Shiyu Guo, Masataka Sunagawa, Tadashi Hisamitsu
AIM: To investigate the effect of mechanical stress on periostin and semaphorin-3A expression in a murine model of postmenopausal osteoporosis and in osteoblast-like MC3T3-E1 cells. MATERIALS AND METHODS: Female mice were divided into three groups and treated with a sham operation, ovariectomy (OVX) or OVX plus treadmill training (OVX+Run). After 10 weeks, tibias were used for histological analysis. MC3T3-E1 cells were burdened by mechanical stress using a centrifuge or were treated with periostin, and the production of biologically-active semaphorin-3A was examined in vitro...
2, 2017: In Vivo
https://www.readbyqxmd.com/read/28060976/-cardiovascular-recovery-during-intermittent-exercise-in-highly-adherent-partic-pants-with-hypertension-and-type-2-diabetes-mellitus
#6
Johnattan Cano-Montoya, Cristian Álvarez, Cristian Martínez, Andrés Salas, Farid Sade, Rodrigo Ramírez-Campillo
BACKGROUND: Despite the evidence supporting metabolic benefits of high intensity interval exercise (HIIT), there is little information about the cardiovascular response to this type of exercise in patients with type 2 diabetes (T2D) and hypertension (HTA). AIM: To analyze the changes in heart rate at rest, at the onset and at the end of each interval of training, after twelve weeks of a HIIT program in T2D and HTA patients. MATERIAL AND METHODS: Twenty-three participants with T2D and HTA (20 women) participated in a controlled HIIT program...
September 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28057696/using-a-smartphone-based-ecological-momentary-assessment-protocol-with-community-dwelling-older-african-americans
#7
Heather Fritz, Wassim Tarraf, Dan J Saleh, Malcolm P Cutchin
OBJECTIVES: Little is known about the feasibility of smartphone-based Ecological Momentary Assessment (EMA) approaches to collect psychosocial data from older populations, especially disadvantaged older populations. In response to this gap, this report provides evidence of the feasibility and utility of a smartphone-based EMA approach for real-time assessment with older African Americans. In addition, we share lessons learned about how to improve utility. METHODS: Ninety-seven older African Americans ages 55 and older (range: 55-95 years) used an Android smartphone loaded with an EMA application to provide data about their everyday activities and stress four times per day for seven consecutive days...
January 4, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28055033/an-electrical-load-measurements-dataset-of-united-kingdom-households-from-a-two-year-longitudinal-study
#8
David Murray, Lina Stankovic, Vladimir Stankovic
Smart meter roll-outs provide easy access to granular meter measurements, enabling advanced energy services, ranging from demand response measures, tailored energy feedback and smart home/building automation. To design such services, train and validate models, access to data that resembles what is expected of smart meters, collected in a real-world setting, is necessary. The REFIT electrical load measurements dataset described in this paper includes whole house aggregate loads and nine individual appliance measurements at 8-second intervals per house, collected continuously over a period of two years from 20 houses...
January 5, 2017: Scientific Data
https://www.readbyqxmd.com/read/28054322/creatine-loading-does-not-preserve-muscle-mass-or-strength-during-leg-immobilization-in-healthy-young-males-a-randomized-controlled-trial
#9
Evelien M P Backx, Roland Hangelbroek, Tim Snijders, Marie-Louise Verscheijden, Lex B Verdijk, Lisette C P G M de Groot, Luc J C van Loon
BACKGROUND: A short period of leg immobilization leads to rapid loss of muscle mass and strength. Creatine supplementation has been shown to increase lean body mass in active individuals and can be used to augment gains in muscle mass and strength during prolonged resistance-type exercise training. OBJECTIVE: Our objective was to investigate whether creatine loading can attenuate the loss of muscle mass and strength during short-term leg immobilization. METHODS: Healthy young men (n = 30; aged 23 ± 1 years; body mass index [BMI] 23...
January 5, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28052435/lumbar-spine-postures-in-marines-during-simulated-operational-positions
#10
David B Berry, Ana E Rodríguez-Soto, J Su, Sara P Gombatto, Bahar Shahidi, Laura Palombo, Christine Chung, Andrew Jensen, Karen R Kelly, Samuel R Ward
Low back pain has a 70% higher prevalence in members of the armed forces than in the general population, possibly due to the loads and positions soldiers experience during training and combat. Although the influence of heavy load carriage on standing lumbar spine posture in this population is known, postures in other operationally relevant positions are unknown. Therefore, the purpose of this study was to characterize the effect of simulated military operational positions under relevant loading conditions on global and local lumbar spine postures in active duty male US Marines...
January 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28051893/shame-in-medical-education-a-randomized-study-of-the-acquisition-of-intimate-examination-skills-and-its-effect-on-subsequent-performance
#11
Wolf E Hautz, Therese Schröder, Katja A Dannenberg, Maren März, Henrike Hölzer, Olaf Ahlers, Anke Thomas
THEORY: Although medical students are exposed to a variety of emotions, the impact of emotions on learning has received little attention so far. Shame-provoking intimate examinations are among the most memorable events for students. Their emotions, however, are rarely addressed during training, potentially leading to withdrawal and avoidance and, consequently, performance deficits. However, emotions of negative valance such as shame may be particularly valuable for learning, as they might prompt mental rehearsal...
January 4, 2017: Teaching and Learning in Medicine
https://www.readbyqxmd.com/read/28051335/managing-the-training-load-in-adolescent-athletes
#12
Andrew Murray
While historically adolescents were removed from their parents to prepare to become warriors, this process repeats itself in modern times but with the outcome being athletic performance. This review considers the process of developing athletes and managing load against the backdrop of differing approaches of conserving and maximizing the talent available. It acknowledges the typical training 'dose' that adolescent athletes receive across a number of sports and the typical 'response' when it is excessive or not managed appropriately...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28051333/optimal-loading-for-maximising-power-during-sled-resisted-sprinting
#13
Matt R Cross, Matt Brughelli, Pierre Samozino, Scott R Brown, Jean-Benoit Morin
Purpose We sought to ascertain whether force-velocity-power relationships could be compiled from a battery of sled-resisted over-ground sprints, and to clarify and compare the optimal loading conditions for maximising power production for different athlete cohorts. Methods Recreational mixed-sport athletes (n=12) and sprinters (n=15) performed multiple trials of maximal sprints unloaded and towing a selection of sled masses (20-120% body-mass). Velocity data were collected by sports radar, and kinetics at peak velocity were quantified using friction coefficients and aerodynamic drag...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28049565/adapting-the-concepts-of-brain-and-cognitive-reserve-to-post-stroke-cognitive-deficits-implications-for-understanding-neglect
#14
Roza M Umarova
Advanced lesion mapping and connectivity analyses are currently the main tools used to understand the mechanisms underlying post-stroke cognitive deficits. However, the factors contributing to pre-stroke architecture of cognitive networks are often ignored, even though they reportedly play a decisive role in the manifestation of cognitive impairment in neurodegeneration. The present review on post-stroke cognitive deficits therefore adopts the concept of brain and cognitive reserve, which was originally developed to account for the individual differences in the course of aging and neurodegenerative diseases...
December 16, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28048913/mo-de-bra-02-simac-a-simulation-tool-for-teaching-linear-accelerator-physics
#15
M Carlone, N Harnett, W Harris, B Norrlinger, M MacPherson, M Lamey, R Anderson, M Oldham
PURPOSE: The first goal of this work is to develop software that can simulate the physics of linear accelerators (linac). The second goal is to show that this simulation tool is effective in teaching linac physics to medical physicists and linac service engineers. METHODS: Linacs were modeled using analytical expressions that can correctly describe the physical response of a linac to parameter changes in real time. These expressions were programmed with a graphical user interface in order to produce an environment similar to that of linac service mode...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048442/su-d-206-02-evaluation-of-partial-storage-of-the-system-matrix-for-cone-beam-computed-tomography-using-a-gpu-platform
#16
D Matenine, G Cote, J Mascolo-Fortin, Y Goussard, P Despres
PURPOSE: Iterative reconstruction algorithms in computed tomography (CT) require a fast method for computing the intersections between the photons' trajectories and the object, also called ray-tracing or system matrix computation. This work evaluates different ways to store the system matrix, aiming to reconstruct dense image grids in reasonable time. METHODS: We propose an optimized implementation of the Siddon's algorithm using graphics processing units (GPUs) with a novel data storage scheme...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048398/su-cd-pins-room-hall-e-01
#17
R Parker
: Medical Physicists are frequently involved in shipping radioactive materials or supervising those who do. Current U.S. Department of Transportation Hazardous Material Regulations, 49 CFR Parts 171 - 185, require hazmat employees to have documented training specified in 49 CFR 172 Subpart H. A hazmat employee is defined as an individual who: (1) loads, unloads or handles hazardous material; (2) manufactures, tests, reconditions, repairs, modifies, marks or otherwise represents containers, drums or packagings as qualified for use in the transportation of hazardous materials; (3) prepares hazardous materials for transportation; (4) is responsible for safety of transporting hazardous materials; or (5) operates a vehicle used to transport hazardous materials...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048284/su-f-p-08-medical-physics-perspective-on-radiation-therapy-quality-and-safety-considerations-in-low-income-settings
#18
J Van Dyk, A Meghzifene
PURPOSE: The last few years have seen a significant growth of interest in the global radiation therapy crisis. Various organizations are quantifying the need and providing aid in support of addressing the shortfall existing in many low-to-middle income countries (LMICs). The Lancet Oncology Commission report (Lancet Oncol. Sep;16(10):1153-86, 2015) projects a need of 22,000 new medical physicists in LMICs by 2035 if there is to be equal access globally. With the tremendous demand for new facilities, equipment and personnel, it is very important to recognize quality and safety considerations and to address them directly...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047966/su-f-t-251-the-quality-assurance-for-the-heavy-patient-load-department-in-the-developing-country-the-primary-experience-of-an-entire-workflow-qa-process-management-in-radiotherapy
#19
J Xie, J Wang, J Peng, J Chen, W Hu
PURPOSE: To implement an entire workflow quality assurance (QA) process in the radiotherapy department and to reduce the error rates of radiotherapy based on the entire workflow management in the developing country. METHODS: The entire workflow QA process management starts from patient registration to the end of last treatment including all steps through the entire radiotherapy process. Error rate of chartcheck is used to evaluate the the entire workflow QA process...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047795/su-f-e-11-perception-and-implementation-of-collaborative-documentation-technologies-among-medical-physics-educators-and-industry-professionals-a-current-practice-survey
#20
Angela N Johnson
PURPOSE: Collaboration on documents and manuscripts plays a central role in conveying medical physics concepts between interdisciplinary teams, necessary for knowledge-building, acquiring funding, and translating scientific concepts to applied medical solutions. Conventional tools and emerging internet-based solutions are used in generating and disseminating physics documents among teams. This research aimed to gain insights on how medical physics professionals and educators are using collaborative documentation software and team practices...
June 2016: Medical Physics
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