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https://www.readbyqxmd.com/read/29344540/standing-height-as-a-prevention-measure-for-overuse-injuries-of-the-back-in-alpine-ski-racing-a-kinematic-and-kinetic-study-of-giant-slalom
#1
Jörg Spörri, Josef Kröll, Benedikt Fasel, Kamiar Aminian, Erich Müller
Background: In alpine ski racing, typical loading patterns of the back include a combined occurrence of spinal bending, torsion, and high peak loads. These factors are known to be associated with high spinal disc loading and have been suggested to be attributable to different types of spine deterioration. However, little is known about the effect of standing height (ie, the distance between the bottom of the running surface of the ski and the ski boot sole) on the aforementioned back loading patterns...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29335751/transcranial-direct-current-stimulation-enhances-foot-sole-somatosensation-when-standing-in-older-adults
#2
Junhong Zhou, On-Yee Lo, Lewis A Lipsitz, Jue Zhang, Jing Fang, Brad Manor
Foot-sole somatosensation is critical for safe mobility in older adults. Somatosensation arises when afferent input activates a neural network that includes the primary somatosensory cortex. Transcranial direct current stimulation (tDCS), as a strategy to increase somatosensory cortical excitability, may, therefore, enhance foot-sole somatosensation. We hypothesized that a single session of tDCS would improve foot-sole somatosensation, and thus mobility, in older adults. Twenty healthy older adults completed this randomized, double-blinded, cross-over study consisting of two visits separated by one week...
January 15, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29327547/-finite-element-analysis-on-the-effect-of-lateral-wedge-insole-intervention-on-the-contact-characteristics-of-the-subtalar-joint
#3
En-Chang Zhou, Ping Tang, Chuan-Ying Zhu, Shi-Ming Liu
OBJECTIVE: To establish a three-dimensional finite element model of the lower limb bones, and investigate the changes of the contact characteristics of the subtalar joint after using laterally wedge insole intervention. METHODS: Using the reverse modeling technology, the lower limb bones of normal adult volunteers was scanned by CT. Mimics 10.0 and Geomagic Studio 6.0 software were used to reconstruct the 3D morphology of bones and external soft tissue of the feet...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29327335/classification-and-characterization-of-postural-transitions-using-instrumented-shoes
#4
Christopher Moufawad El Achkar, Constanze Lenbole-Hoskovec, Anisoara Paraschiv-Ionescu, Kristof Major, Kamiar Aminian, Christophe Büla
The frequency and quality of sit-to-stand and stand-to-sit postural transitions decrease with age and are highly relevant for fall risk assessment. Accurate classification and characterization of these transitions in daily life of older adults are therefore needed. In this study, we propose to use instrumented shoes for postural transition classification as well as transition duration estimation from insole force signals. In the first part, data were collected with 10 older adults and 10 young participants performing transitions in the laboratory while wearing the instrumented shoes, without arm assistance...
January 12, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29299282/inducing-broadcast-coral-spawning-ex-situ-closed-system-mesocosm-design-and-husbandry-protocol
#5
Jamie Craggs, James R Guest, Michelle Davis, Jeremy Simmons, Ehsan Dashti, Michael Sweet
For many corals, the timing of broadcast spawning correlates strongly with a number of environmental signals (seasonal temperature, lunar, and diel cycles). Robust experimental studies examining the role of these putative cues in triggering spawning have been lacking until recently because it has not been possible to predictably induce spawning in fully closed artificial mesocosms. Here, we present a closed system mesocosm aquarium design that utilizes microprocessor technology to accurately replicate environmental conditions, including photoperiod, seasonal insolation, lunar cycles, and seasonal temperature from Singapore and the Great Barrier Reef (GBR), Australia...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29297103/long-term-pathological-gait-pattern-changes-after-talus-fractures-dynamic-measurements-with-a-new-insole
#6
Benedikt J Braun, Patrick Pelz, Nils T Veith, Mika Rollmann, Moritz Klein, Steven C Herath, Jörg H Holstein, Tim Pohlemann
PURPOSE: The aim of the current study was to describe long-term gait changes after talus fractures, identify patterns associated with poor outcome and discuss possible treatment options based on dynamic gait analysis. METHODS: Twenty-seven patients were followed-up clinically and via gait analysis after talus fracture osteosynthesis. Continuous dynamic pedobarography with a gait analysis insole was performed on a standardized parcours consisting of different gait tasks and matched to the outcome...
January 2, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29281893/adherence-over-time-the-course-of-adherence-to-customized-diabetic-insoles-as-objectively-assessed-by-a-temperature-sensor
#7
Dominic Ehrmann, Monika Spengler, Michael Jahn, Dea Niebuhr, Thomas Haak, Bernhard Kulzer, Norbert Hermanns
BACKGROUND: Temperature sensors are an objective way to assess adherence to diabetic footwear. Good adherence is essential for the prevention of diabetic foot problems. Little is known about the long-term course of adherence in patients at risk for diabetic foot problems. METHOD: A temperature sensor was incorporated into the specialized footwear of patients with type 2 diabetes after their first plantar ulceration. Kaplan-Meier curve was used to analyze when patients started to become nonadherent (not wearing the footwear for two straight weeks)...
December 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29258166/pofbg-embedded-cork-insole-for-plantar-pressure-monitoring
#8
Débora Vilarinho, Antreas Theodosiou, Cátia Leitão, Arnaldo G Leal-Junior, Maria de Fátima Domingues, Kyriacos Kalli, Paulo André, Paulo Antunes, Carlos Marques
We propose a novel polymer optical fiber (POF) sensing system based on fiber Bragg gratings (FBGs) to measure foot plantar pressure. The plantar pressure signals are detected by five FBGs, in the same piece of cyclic transparent optical polymer (CYTOP) fiber, which are embedded in a cork insole for the dynamic monitoring of gait. The calibration and measurements performed with the suggested system are presented, and the results obtained demonstrate the accuracy and reliability of the sensing platform to monitor the foot plantar pressure distribution during gait motion and the application of pressure...
December 16, 2017: Sensors
https://www.readbyqxmd.com/read/29249141/effect-of-textured-insoles-on-postural-control-during-static-upright-posture-following-lower-limb-muscle-fatigue
#9
Francesco Palazzo, Alessandra Nardi, Virginia Tancredi, Alfio Caronti, Gianpaolo Scalia Tomba, Pietro Lebone, Elvira Padua, Giuseppe Annino
BACKGROUND: The purpose of this study was to assess the effects of textured insoles on static upright posture before and after lower limb muscle fatigue. Textured insoles used contained small and non-deformable pebbles of various sizes that are able to stimulate a major number of mechanoreceptors. It was inserted inside footwear. METHODS: Ten healthy young adults participated in the study (mean age 26.1 ± 3.07 years). They were asked to stand on a force platform in four sensory states: vision, no vision, with and without natural plantar stimulation...
December 15, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29246472/muscle-tension-increases-impact-force-but-decreases-energy-absorption-and-pain-during-visco-elastic-impacts-to-human-thighs
#10
Felix Tsui, Matthew T G Pain
Despite uncertainty of its exact role, muscle tension has shown an ability to alter human biomechanical response and may have the ability to reduce impact injury severity. The aim of this study was to examine the effects of muscle tension on human impact response in terms of force and energy absorbed and the subjects' perceptions of pain. Seven male martial artists had a 3.9 kg medicine ball dropped vertically from seven different heights, 1.0-1.6 m in equal increments, onto their right thigh. Subjects were instructed to either relax or tense the quadriceps via knee extension (≥60% MVC) prior to each impact...
December 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29244535/whether-flexible-flatfoot-needs-the-treatment-an-observation-of-plantar-pressure-effects-on-adults-with-flexible-flatfoot-by-wearing-over-the-counter-insoles-when-walking-on-level-surface-upstairs-and-downstairs
#11
JunNa Zhai, Jue Wang, YuSheng Qiu
BACKGROUND: Orthotic insole is one popular physiotherapy for flatfoot. However, the effects and if flexible flatfoot needs the treatment are not clear and how the plantar pressure change while walking upstairs and downstairs had not been studied. This study observed the plantar pressure of different walking condition to find out the answers. METHODS: Fifteen adults with flexible flatfoot and fifteen adults with normal foot were examined while walking on a level surface, walking up and down 10 cm and 20 cm stairs before treatment...
December 15, 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29239782/the-morphology-of-foot-soft-tissues-is-associated-with-running-shoe-type-in-healthy-recreational-runners
#12
Xianyi Zhang, Tijs Delabastita, Joselien Lissens, Floor De Beenhouwer, Benedicte Vanwanseele
OBJECTIVES: To determine the differences in the morphology of foot soft tissues between runners using different types of running shoes. DESIGN: Cross-sectional study. METHODS: Thirty-eight recreational runners were divided into four groups based on running shoe type, namely, neutral shoes, motion control shoes, minimalistic shoes and neutral shoes with custom-made insoles. An arch height index and a relative arch deformation index were calculated for each participant...
November 22, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29234021/workflow-assessing-the-effect-of-gait-alterations-on-stresses-in-the-medial-tibial-cartilage-combined-musculoskeletal-modelling-and-finite-element-analysis
#13
K S Halonen, C M Dzialo, M Mannisi, M S Venäläinen, M de Zee, M S Andersen
Knee osteoarthritis (KOA) is most common in the medial tibial compartment. We present a novel method to study the effect of gait modifications and lateral wedge insoles (LWIs) on the stresses in the medial tibial cartilage by combining musculoskeletal (MS) modelling with finite element (FE) analysis. Subject's gait was recorded in a gait laboratory, walking normally, with 5° and 10° LWIs, toes inward ('Toe in'), and toes outward ('Toe out wide'). A full lower extremity MRI and a detailed knee MRI were taken...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29199178/carbonic-anhydrase-2-like-in-the-giant-clam-tridacna-squamosa-characterization-localization-response-to-light-and-possible-role-in-the-transport-of-inorganic-carbon-from-the-host-to-its-symbionts
#14
Yuen K Ip, Clarissa Z Y Koh, Kum C Hiong, Celine Y L Choo, Mel V Boo, Wai P Wong, Mei L Neo, Shit F Chew
The fluted giant clam, Tridacna squamosa, lives in symbiosis with zooxanthellae which reside extracellularly inside a tubular system. Zooxanthellae fix inorganic carbon (Ci) during insolation and donate photosynthate to the host. Carbonic anhydrases catalyze the interconversion of CO2 and HCO3-, of which carbonic anhydrase 2 (CA2) is the most ubiquitous and involved in many biological processes. This study aimed to clone a CA2 homolog (CA2-like) from the fleshy and colorful outer mantle as well as the thin and whitish inner mantle of T...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29185511/environmental-structuring-of-marine-plankton-phenology
#15
Daniel G Boyce, Brian Petrie, Kenneth T Frank, Boris Worm, William C Leggett
Seasonal cycles of primary production (phenology) critically influence biogeochemical cycles, ecosystem structure and climate. In the oceans, primary production is dominated by microbial phytoplankton that drift with currents, and show rapid turnover and chaotic dynamics, factors that have hindered understanding of their phenology. We used all available observations of upper-ocean phytoplankton concentration (1995-2015) to describe global patterns of phytoplankton phenology, the environmental factors that structure them, and their relationships to terrestrial patterns...
October 2017: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29183650/insights-to-bioprocess-and-treatment-competence-of-urban-wetlands
#16
Durga Madhab Mahapatra, N V Joshi, T V Ramachandra
Wetlands play a major role in the recharge of groundwater resources, maintenance of water quality (remediation), moderate microclimate while supporting local livelihood through provision of fish, fodder, etc. The present study aims to investigate algal-bacterial consortium as a function of residence time with the water quality dynamics in two major wetlands in Bangalore city, India. Over thirty-two genera of algae were recorded with more than 40 species in the lakes and two dominant bacterial assemblages. The higher Ammonium-N content favoured the growth of these members...
November 25, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29182569/knee-impedance-modulation-to-control-an-active-orthosis-using-insole-sensors
#17
Ana Cecilia Villa-Parra, Denis Delisle-Rodriguez, Jessica Souza Lima, Anselmo Frizera-Neto, Teodiano Bastos
Robotic devices for rehabilitation and gait assistance have greatly advanced with the objective of improving both the mobility and quality of life of people with motion impairments. To encourage active participation of the user, the use of admittance control strategy is one of the most appropriate approaches, which requires methods for online adjustment of impedance components. Such approach is cited by the literature as a challenge to guaranteeing a suitable dynamic performance. This work proposes a method for online knee impedance modulation, which generates variable gains through the gait cycle according to the users' anthropometric data and gait sub-phases recognized with footswitch signals...
November 28, 2017: Sensors
https://www.readbyqxmd.com/read/29182042/greater-trochanteric-pain-syndrome-and-gluteus-medius-and-minimus-tendinosis-nonsurgical-treatment
#18
Ana Torres, Mariano Fernández-Fairen, José Sueiro-Fernández
Greater trochanteric pain syndrome (GTPS) affects 10-25% of people in developed countries. The underlying etiology for GTPS is most commonly the tendinosis or a tendon tear of the gluteus medius, minimus or both at the greater trochanter; the inflammation of the tendon is not a major feature. We critically evaluated conservative treatment, for which we reviewed 76 publications, grading them according to four levels of evidence. We identified a wide variety of conservative treatment options: home therapy (insoles, walking sticks/crutches, orthotic devices, stretching exercises and preventive measures); physiotherapy (massage and stretching exercises); infiltrations (corticosteroids and local anesthetics); image-guided infiltrations (fluoroscopy and ultrasound); shockwave therapy; platelet-rich plasma injection; and drug therapy...
January 2018: Pain Management
https://www.readbyqxmd.com/read/29140980/prokaryotic-diversity-and-biogeochemical-characteristics-of-benthic-microbial-ecosystems-at-la-brava-a-hypersaline-lake-at-salar-de-atacama-chile
#19
Maria Eugenia Farias, Maria Cecilia Rasuk, Kimberley L Gallagher, Manuel Contreras, Daniel Kurth, Ana Beatriz Fernandez, Daniel Poiré, Fernando Novoa, Pieter T Visscher
Benthic microbial ecosystems of Laguna La Brava, Salar de Atacama, a high altitude hypersaline lake, were characterized in terms of bacterial and archaeal diversity, biogeochemistry, (including O2 and sulfide depth profiles and mineralogy), and physicochemical characteristics. La Brava is one of several lakes in the Salar de Atacama where microbial communities are growing in extreme conditions, including high salinity, high solar insolation, and high levels of metals such as lithium, arsenic, magnesium, and calcium...
2017: PloS One
https://www.readbyqxmd.com/read/29134317/the-impact-of-canal-flare-index-on-leg-length-discrepancy-after-total-hip-arthroplasty
#20
Peter Brumat, Borut Pompe, Vane Antolič, Blaž Mavčič
INTRODUCTION: The femoral stem should protrude from femur by an appropriate vertical distance to allow leg length equalization at hip arthroplasty; this distance depends on the size/shape of medullary canal and implant. The relationship between femoral morphology and achievability of leg length restoration is currently unclear. Our aim was to examine the impact of the femoral canal flare index (CFI) on the risk of leg length discrepancy (LLD) after total hip arthroplasty with different femoral stems...
November 13, 2017: Archives of Orthopaedic and Trauma Surgery
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