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https://www.readbyqxmd.com/read/28638996/smooth-at-one-end-and-rough-at-the-other-influence-of-object-texture-on-grasping-behaviour
#1
Catharina Glowania, L C J van Dam, E Brenner, M A Plaisier
When picking up objects using a pinch grip, there are usually numerous places at which one could place the thumb and index finger. Yet, people seem to consistently place them at or close to the centre of mass (COM), presumably to minimize torque and therefore the required grip force. People also prefer to grasp objects by parallel surfaces and ones with higher friction coefficients (rough surfaces), to prevent the object from slipping when they lift it. Here, we examine the trade-off between friction and COM...
June 21, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28636477/three-axial-evaluation-of-whole-body-vibration-in-agricultural-telehandlers-the-effects-of-an-active-cab-suspension-system
#2
Federica Caffaro, Christian Preti, Margherita Micheletti Cremasco, Eugenio Cavallo
Agricultural and earth-moving machinery operators are particularly exposed to whole body vibration (WBV), which has severe effects on health and affects comfort and performance. Few studies have investigated vibrational safety and comfort issues in telescopic handlers. These vehicles are widespread in many off-road applications-such as construction, agriculture and mining-used to handle loads and to lift persons and equipment. This study investigated the effects of an active hydro-pneumatic cab-suspension system fitted to a telehandler on a driver's vibration exposure along the x-, y- and z-axes, through both objective and subjective assessments...
June 21, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28634814/assessment-of-waterborne-amine-coated-silver-nanoparticle-ag-np-induced-toxicity-in-labeo-rohita-by-histological-and-hematological-profiles
#3
Muhammad Saleem Khan, Naureen Aziz Qureshi, Farhat Jabeen, Muhammad Shakeel, Muhammad Saleem Asghar
Silver nanoparticles (Ag-NPs) have wide applications in the medical field; however, the toxicological effects are still poorly studied. The study was aimed to determine the effects of 15.78 nm spherical and amine-coated Ag-NPs on hematology and histology of gills and liver tissues in 28 days treated Labeo rohita (L. rohita). It was found that Ag-NPs induced alterations in the hematological parameters in a dose dependent manner. The Ag-NPs also induced histological alterations in a dose-dependent manner. In gill tissues, it induced fusion of secondary lamellae, separation of gill epithelium, fusion and necrosis of lamellar cells, hyperplasia, deformed cartilaginous skeleton, separation and lifting of epithelium, and curling of lamellae in a dose dependent manner...
June 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28634702/rectus-abdominis-fat-transfer-raft-in-lipoabdominoplasty-a-new-technique-to-achieve-fitness-body-contour-in-patients-that-require-tummy-tuck
#4
Stefan Danilla
OBJECTIVE: To describe a new technique to achieve a fit-look in lipoabdominoplasty patients through liposculpture and rectus abdominis fat transfer (RAFT). METHODS: Patients with a body mass index under 26 and of both genders scheduled for abdominoplasty or body lift were selected for this procedure. Fat was transferred directly to the rectus abdominis muscle after flap elevation during lipoabdominoplasty. RESULTS: A total of 26 patients were operated on with this technique...
June 20, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28616182/terrestrial-capture-of-prey-by-the-reedfish-a-model-species-for-stem-tetrapods
#5
Sam Van Wassenbergh, Christoffel Bonte, Krijn B Michel
Due to morphological resemblance, polypterid fishes are used as extant analogues of Late Devonian lobe-finned sarcopterygians to identify the features that allowed the evolution of a terrestrial lifestyle in early tetrapods. Previous studies using polypterids showed how terrestrial locomotion capacity can develop, and how air ventilation for breathing was possible in extinct tetrapodomorphs. Interestingly, one polypterid species, the reedfish Erpetoichthys calabaricus, has been noted being capable of capturing prey on land...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28611110/the-liftmor-m-lifting-intervention-for-training-muscle-and-osteoporosis-rehabilitation-for-men-trial-protocol-for-a-semirandomised-controlled-trial-of-supervised-targeted-exercise-to-reduce-risk-of-osteoporotic-fracture-in-older-men-with-low-bone-mass
#6
Amy T Harding, Benjamin K Weeks, Steven L Watson, Belinda R Beck
INTRODUCTION: The primary aim of the proposed study is to examine the efficacy of an 8-month supervised, high-intensity progressive resistance training and impact loading programme in comparison with a supervised machine-based isometric exercise training programme using the bioDensity system in older men with low bone mass. We will also determine the safety and acceptability of each exercise training mode. Intervention group responses will be compared with those of a self-selected, non-randomised control sample of sex-matched and age-matched men who will follow their usual lifestyle activities for 8 months...
June 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28606334/an-investigation-into-the-cause-of-the-inner-dark-areas-and-outer-lighter-areas-ghosting-seen-in-dynamically-created-two-dimensional-bare-footprints
#7
Wesley Vernon Obe, Neil Simmonite, Sarah Reel, Selina Reidy
Dynamic bare footprints differ from static bare footprints through the presence of additional, lighter markings around the rear of the heel print and apices of the toe print areas. These images can appropriately be described as inner dark and outer ghosting features. To date, the functional cause of both features has not been understood. To gain such an understanding could potentially allow the further development and use of these features in forensic identification. The aim of this project was to investigate the causes of the inner dark and outer ghosting features seen in dynamic bare footprints through an observational, practice-based action research approach within a gait laboratory...
July 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28605484/infants-born-preterm-demonstrate-impaired-exploration-of-their-bodies-and-surfaces-throughout-the-first-two-years-of-life
#8
Iryna Babik, James Cole Galloway, Michele A Lobo
Background.: Non-object-oriented exploratory behaviors infants perform with their bodies and surfaces have been proposed to be key precursors of infants' object exploration, early learning, and future cognitive development. Little is known about the developmental trajectories of these behaviors, especially for infants born preterm. Objective.: The purpose of the study was to longitudinally compare non-object-oriented exploratory behaviors performed by full-term and preterm infants...
June 12, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28605252/a-simple-method-for-assessing-upper-limb-force-velocity-profile-in-bench-press
#9
Abderrahmane Rahmani, Pierre Samozino, Jean-Benoit Morin, Baptiste Morel
PURPOSE: 1) to analyze the reliability and validity of a field computation method based on easy-to-measure data to assess the mean force (F̄) and velocity (v̄) produced during a ballistic bench press movement; and 2) to verify that the force-velocity profile (F-v) obtained with multiple loaded trials is accurately described. METHODS: Twelve participants performed ballistic bench press against various lifted mass from 30 to 70% of their body mass. For each trial, F̄ and v̄ were determined from an accelerometer (sampling rate: 500Hz; reference method) and a simple computation method based on upper limb mass, barbell flight height and push-off distance...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28583093/physical-working-conditions-as-covered-in-european-monitoring-questionnaires
#10
Tore Tynes, Cecilie Aagestad, Sannie Vester Thorsen, Lars Louis Andersen, Merja Perkio-Makela, Francisco Javier Pinilla García, Luz Galiana Blanco, Greet Vermeylen, Agnes Parent-Thirion, Wendela Hooftman, Irene Houtman, Falk Liebers, Hermann Burr, Maren Formazin
BACKGROUND: The prevalence of workers with demanding physical working conditions in the European work force remains high, and occupational physical exposures are considered important risk factors for musculoskeletal disorders (MSD), a major burden for both workers and society. Exposures to physical workloads are therefore part of the European nationwide surveys to monitor working conditions and health. An interesting question is to what extent the same domains, dimensions and items referring to the physical workloads are covered in the surveys...
June 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28582869/postnatal-development-of-spasticity-following-transgene-insertion-in-the-mouse-%C3%AE-iv-spectrin-gene-sptbn4
#11
Eva Kichkin, Archunan Visvanathan, Frank J Lovicu, Daisy Y Shu, Shannon J Das, Stephen W Reddel, Emily P McCann, Katharine Y Zhang, Kelly L Williams, Ian P Blair, William D Phillips
BACKGROUND: The L25 mouse line was generated by random genomic insertion of a lens-specific transgene. Inbreeding of L25 hemizygotes revealed an unanticipated spastic phenotype in the hind limbs. OBJECTIVE: The goals were to characterize the motor phenotype in the L25 mice and to map the transgene insert site within the mouse genome. METHODS: Six pairs of L25+/- mice were repeatedly mated. Beginning at weaning, all progeny were inspected for body weight and motor signs twice weekly until they displayed predefined ethical criteria for termination...
2017: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/28570490/a-review-of-the-biomechanical-differences-between-the-high-bar-and-low-bar-back-squat
#12
Daniel J Glassbrook, Eric R Helms, Scott R Brown, Adam G Storey
The back-squat is a common exercise in strength and conditioning, for a variety of sports. It is widely regarded as a fundamental movement to increase and measure lower-body and trunk function, as well as an effective injury rehabilitation exercise. There are typically two different bar positions used when performing the back-squat; the traditional 'high-bar' back-squat (HBBS) and the 'low-bar' back-squat (LBBS). Different movement strategies are employed to ensure that the center-of-mass remains in the base-of-support for balance during the execution of these lifts...
May 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28558914/numerical-investigation-of-the-early-flight-phase-in-ski-jumping
#13
N Gardan, A Schneider, G Polidori, H Trenchard, J M Seigneur, F Beaumont, F Fourchet, R Taiar
The purpose of this study is to develop a numerical methodology based on real data from wind tunnel experiments to investigate the effect of the ski jumper's posture and speed on aerodynamic forces in a wide range of angles of attack. To improve our knowledge of the aerodynamic behavior of the ski jumper and his equipment during the early flight phase of the ski jump, we applied CFD methodology to evaluate the influence of angle of attack (α=14°, 21.5°, 29°, 36.5° and 44°) and speed (u=23, 26 and 29m/s) on aerodynamic forces in the situation of stable attitude of the ski jumper's body and skis...
May 19, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28557849/monitoring-resistance-exercise-intensity-via-rpe-in-previously-untrained-patients-with-prostate-cancer-undergoing-androgen-deprivation-therapy
#14
C M Fairman, R L LaFountain, A R Lucas, B C Focht
Exercise has been shown to be safe and effective for prostate cancer (PrCa) patients. The monitoring of resistance exercise (RE) intensity is an emerging area of interest in RE prescription. Rating of perceived exertion (RPE) is one of the most commonly used methods, but has not yet been validated in this population. Thus, the purpose of this study was to examine the relationship between RPE and RE intensity in PrCa. Data for this study were abstracted from baseline upper and lower body strength assessments from two previous trials (IDEA-P; Livestrong) in our laboratory investigating functional outcomes in PrCa patients undergoing androgen deprivation therapy (ADT)...
May 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28541160/an-ergonomic-assessment-of-hospital-linen-bag-handling
#15
Erin Teeple, Jack T Dennerlein, Dean Hashimoto, Luis A Soto, Elena Losina, Jeffrey N Katz
The Joint Commission provides accreditation standards for staging hospital waste, but there are no federal lifting safety standards for linen bags. We evaluated hospital laundry bag lifting using the Revised National Institute for Occupational Safety and Health (NIOSH) Lifting Equation. We hypothesized that the permitted 32-gallon linen container capacity might allow filling to weights above our calculated Recommended Weight Limit (RWL) for some lifting positions and contents. We found that 30- and 40-gallon bags filled with loose dry linen had predicted weights within estimated RWLs only for lifts close to the body...
January 1, 2017: New Solutions: a Journal of Environmental and Occupational Health Policy: NS
https://www.readbyqxmd.com/read/28538761/effects-of-continuous-and-accumulated-exercise-on-endothelial-function-in-rat-aorta
#16
Juliana Edwiges Martinez, Elane de Fátima Taipeiro, Agnaldo Bruno Chies
Background: The practice of exercise in short bouts repeated throughout the day may be an alternative strategy to lift people out of physical inactivity. Objective: to evaluate if accumulated exercise, as occurs in continuous exercise training, improve endothelial function in rat aorta. Methods: Wistar male rats were divided into three groups: continuous exercise (CEx, 1 hour on the treadmill) or accumulated exercise (AEx, 4 bouts of 15 minutes / day) for 5 days/week for 8 weeks, or sedentary (SED)...
April 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28538558/discussion-safety-of-outpatient-circumferential-body-lift-evidence-from-42-consecutive-cases
#17
Sharona Czerniak, Jeffrey A Gusenoff, J Peter Rubin
No abstract text is available yet for this article.
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538557/safety-of-outpatient-circumferential-body-lift-evidence-from-42-consecutive-cases
#18
J John Makipour, Erik Nuveen, Diana Abbott
BACKGROUND: Circumferential lower body lifts have become more prevalent with the rise of massive weight loss surgery. This has historically required inpatient admission. Only three previous groups have published their experience with outpatient lower body lifts. METHODS: The authors reviewed their experience with 42 consecutive outpatient circumferential body lifts from 2010 to 2016, and report patient demographics, operative details, and postoperative outcomes...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28522246/patient-obesity-influences-pelvic-lift-during-cup-insertion-in-total-hip-arthroplasty-through-a-lateral-transgluteal-approach-in-supine-position
#19
Steffen Brodt, Dimitri Nowack, Benjamin Jacob, Linda Krakow, Christoph Windisch, Georg Matziolis
BACKGROUND: Movement of the pelvis during implantation of total hip arthroplasty (THA) has a major influence on the positioning of the acetabular cup. Strong traction caused by retractors leads to iatrogenic pelvic lift and can thus be partly responsible for cup malpositioning. The objective of this study was to investigate such factors that influence pelvic lift. METHODS: The dynamic movement of the pelvis was measured during implantation of THA in 67 patients...
April 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28515837/resistance-training-contribute-to-the-aerobic-components-of-an-exercise-session-in-adults-but-not-as-much-in-older-adults
#20
Neha Bharti, Travis Hrubeniuk, Andrea Mayo, Martin Sénéchal, Danielle R Bouchard
Previous research has indicated that active adults are able to achieve moderate intensity as measured via heart rate during a typical resistance training (RT) session. The main objective was to identify if overweight adults and older adults can reach aerobic moderate intensity at a rate comparable to adults displaying a recommended body mass index. Twenty participants in each group were asked to visit a fitness facility twice if they self-reported doing RT for a minimum two days per week. At the first session baseline characteristics and maximal lifting capacity for each RT exercise...
2017: International Journal of Exercise Science
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