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https://www.readbyqxmd.com/read/28338396/should-ballet-dancers-vary-postures-and-under-foot-surfaces-when-practicing-postural-balance
#1
Nili Steinberg, Gordon Waddington, Roger Adams, Janet Karin, Oren Tirosh
BACKGROUND: Postural balance (PB) is an important component skill for professional dancers. However, the effects of different types of postures and different underfoot surfaces on PB have not been adequately addressed. PURPOSE: The main aim of the present study was to investigate the effect of different conditions of footwear, surfaces, and standing positions on static and dynamic PB ability of young ballet dancers. METHOD: Thirty-six male and female young professional ballet dancers (aged 14-19) completed static and dynamic balance testing, measured by head and lumbar accelerometers, while standing on one leg in the turn-out position, under six different conditions: 1...
March 24, 2017: Motor Control
https://www.readbyqxmd.com/read/28324752/vertical-ground-reaction-force-during-standing-and-walking-are-they-related-to-bone-mineral-density-left-right-asymmetries
#2
Marina Brozgol, Mira Arbiv, Anat Mirelman, Talia Herman, Jeffrey M Hausdorff, Nachum Vaisman
Osteoporosis is a systemic skeletal disease that is characterized by reduced bone mass, deterioration of bone tissue and skeletal fragility. The purpose of the current study was to determine whether asymmetrical femur bone mineral density (BMD) is associated with asymmetrical gait and standing. We compared measures of gait and standing asymmetry in subjects with (n=38) and without (n=11) significant left-right differences in BMD. Participants walked for 72m at their comfortable speed and stood quietly for 60s while outfitted with pressure-sensitive insoles...
March 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28320506/unexpected-walking-perturbations-reliability-and-validity-of-a-new-treadmill-protocol-to-provoke-muscular-reflex-activities-at-lower-extremities-and-the-trunk
#3
Tilman Engel, Juliane Mueller, Stephan Kopinski, Antje Reschke, Steffen Mueller, Frank Mayer
Instrumented treadmills offer the potential to generate standardized walking perturbations, which are particularly rapid and powerful. However, technical requirements to release adequate perturbations regarding timing, duration and amplitude are demanding. This study investigated the test-retest reliability and validity of a new treadmill perturbation protocol releasing rapid and unexpected belt perturbations to provoke muscular reflex responses at lower extremities and the trunk. Fourteen healthy participants underwent two identical treadmill walking protocols, consisting of 10 superimposed one-sided belt perturbations (100ms duration; 2m/s amplitude), triggered by a plantar pressure insole 200ms after heel contact...
March 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28303943/increased-chemical-weathering-during-the-deglacial-to-mid-holocene-summer-monsoon-intensification
#4
Pavan Miriyala, N P Sukumaran, B Nagender Nath, P B Ramamurty, A V Sijinkumar, B Vijayagopal, V Ramaswamy, Tyson Sebastian
Chemical weathering and the ensuing atmospheric carbon dioxide consumption has long been considered to work on geological time periods until recently when some modelling and natural records have shown that the weathering-related CO2 consumption can change at century to glacial-interglacial time scale. Last glacial to interglacial transition period is a best test case to understand the interplay between Pco2-temperature-chemical weathering when a pulse of rapid chemical weathering was initiated. Here we show, from a high resolution 54 ka record from the Andaman Sea in the northern Indian Ocean, that the chemical weathering responds to deglacial to mid-Holocene summer monsoon intensification in the Myanmar watersheds...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302594/a-human-centered-design-methodology-to-enhance-the-usability-human-factors-and-user-experience-of-connected-health-systems-a-three-phase-methodology
#5
Richard Harte, Liam Glynn, Alejandro Rodríguez-Molinero, Paul Ma Baker, Thomas Scharf, Leo R Quinlan, Gearóid ÓLaighin
BACKGROUND: Design processes such as human-centered design, which involve the end user throughout the product development and testing process, can be crucial in ensuring that the product meets the needs and capabilities of the user, particularly in terms of safety and user experience. The structured and iterative nature of human-centered design can often present a challenge when design teams are faced with the necessary, rapid, product development life cycles associated with the competitive connected health industry...
March 16, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/28299934/antibacterial-composite-film-based-triboelectric-nanogenerator-for-harvesting-walking-energy
#6
Guangqin Gu, Changbao Han, Jingjing Tian, Cunxin Lu, Chuan He, Tao Jiang, Zhou Li, Zhong Lin Wang
As a green and eco-friendly technology, triboelectric nanogenerator (TENG) can harvest energy from human motion to generate electricity, so TENGs have been widely applied in wearable electronic devices to replace the traditional batteries. However, the surface of these TENGs is easy to be contaminated and breed bacteria, which is a threat to human health. Here, we report an antibacterial composite film-based triboelectric nanogenerator (ACF-TENG) that uses Ag exchanged zeolite (Ag-zeolite) and polypropylene (PP) composite film as the triboelectric layer...
March 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28271930/plantar-static-pressure-distribution-in-normal-feet-using-cotton-socks-with-different-structures
#7
Zeynab Soltanzadeh, Saeed Shaikhzadeh Najar, Mohammad Haghpanahi, Mohammd Reza Mohajeri-Tehrani
BACKGROUND: The major goal of investigating plantar pressure in patients with pain or those at risk for skin injury is to reduce pressure under prominent metatarsal heads, especially the first and second metatarsals. In research, the insole is used to reduce plantar pressure by increasing the contact area in the midfoot region, which, in turn, induces an uncomfortable feeling near the arch during walking. It is deduced that sock structure can redistribute plantar pressure distribution...
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28268695/development-of-a-real-time-activity-monitoring-android-application-utilizing-smartstep
#8
Nagaraj Hegde, Edward Melanson, Edward Sazonov
Footwear based activity monitoring systems are becoming popular in academic research as well as consumer industry segments. In our previous work, we had presented developmental aspects of an insole based activity and gait monitoring system-SmartStep, which is a socially acceptable, fully wireless and versatile insole. The present work describes the development of an Android application that captures the SmartStep data wirelessly over Bluetooth Low energy (BLE), computes features on the received data, runs activity classification algorithms and provides real time feedback...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267751/cost-effectiveness-of-adjunct-non-pharmacological-interventions-for-osteoarthritis-of-the-knee
#9
Beth Woods, Andrea Manca, Helen Weatherly, Pedro Saramago, Eleftherios Sideris, Christina Giannopoulou, Stephen Rice, Mark Corbett, Andrew Vickers, Matthew Bowes, Hugh MacPherson, Mark Sculpher
BACKGROUND: There is limited information on the costs and benefits of alternative adjunct non-pharmacological treatments for knee osteoarthritis and little guidance on which should be prioritised for commissioning within the NHS. This study estimates the costs and benefits of acupuncture, braces, heat treatment, insoles, interferential therapy, laser/light therapy, manual therapy, neuromuscular electrical stimulation, pulsed electrical stimulation, pulsed electromagnetic fields, static magnets and transcutaneous electrical nerve Stimulation (TENS), based on all relevant data, to facilitate a more complete assessment of value...
2017: PloS One
https://www.readbyqxmd.com/read/28256245/effects-of-medially-posted-insoles-on-foot-and-lower-limb-mechanics-across-walking-and-running-in-overpronating-men
#10
Jukka Kosonen, Juha-Pekka Kulmala, Erich Müller, Janne Avela
Anti-pronation orthoses, like medially posted insoles (MPI), have traditionally been used to treat various of lower limb problems. Yet, we know surprisingly little about their effects on overall foot motion and lower limb mechanics across walking and running, which represent highly different loading conditions. To address this issue, multi-segment foot and lower limb mechanics was examined among 11 overpronating men with normal (NORM) and MPI insoles during walking (self-selected speed 1.70±0.19m/s vs 1.72±0...
February 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28245273/influence-of-custom-made-and-prefabricated-insoles-before-and-after-an-intense-run
#11
Angel Gabriel Lucas-Cuevas, Andrés Camacho-García, Raúl Llinares, Jose Ignacio Priego Quesada, Salvador Llana-Belloch, Pedro Pérez-Soriano
Each time the foot contacts the ground during running there is a rapid deceleration that results in a shock wave that is transmitted from the foot to the head. The fatigue of the musculoskeletal system during running may decrease the ability of the body to absorb those shock waves and increase the risk of injury. Insoles are commonly prescribed to prevent injuries, and both custom-made and prefabricated insoles have been observed to reduce shock accelerations during running. However, no study to date has included a direct comparison of their behaviour measured over the same group of athletes, and therefore great controversy still exists regarding their effectiveness in reducing impact loading during running...
2017: PloS One
https://www.readbyqxmd.com/read/28243676/insole-optical-fiber-bragg-grating-sensors-network-for-dynamic-vertical-force-monitoring
#12
Maria Fátima Domingues, Cátia Tavares, Cátia Leitão, Anselmo Frizera-Neto, Nélia Alberto, Carlos Marques, Ayman Radwan, Jonathan Rodriguez, Octavian Postolache, Eduardo Rocon, Paulo André, Paulo Antunes
No abstract text is available yet for this article.
September 1, 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28235983/-a%C3%A2-new-continuous-gait-analysis-system-for-ankle-fracture-aftercare
#13
B J Braun, N T Veith, S C Herath, R Hell, M Rollmann, M Orth, J H Holstein, T Pohlemann
BACKGROUND: Correct aftercare following lower extremity fractures remains a controversial issue. Reliable, clinically applicable weight-bearing recommendations have not yet been defined. The aim of the current study was to establish a new gait analysis insole during physical therapy aftercare of ankle fractures to test patients' continuous, long-term compliance to partial weight-bearing restrictions and investigate whether patients can estimate their weight-bearing compliance. MATERIALS AND METHODS: The postoperative gait of 14 patients after operative treatment of Weber B-type ankle fractures was monitored continuously for six weeks (OpenGO, Moticon GmbH, Munich)...
February 24, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28230127/theory-of-chaotic-orbital-variations-confirmed-by-cretaceous-geological-evidence
#14
Chao Ma, Stephen R Meyers, Bradley B Sageman
Variations in the Earth's orbit and spin vector are a primary control on insolation and climate; their recognition in the geological record has revolutionized our understanding of palaeoclimate dynamics, and has catalysed improvements in the accuracy and precision of the geological timescale. Yet the secular evolution of the planetary orbits beyond 50 million years ago remains highly uncertain, and the chaotic dynamical nature of the Solar System predicted by theoretical models has yet to be rigorously confirmed by well constrained (radioisotopically calibrated and anchored) geological data...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/28230118/a-simple-rule-to-determine-which-insolation-cycles-lead-to-interglacials
#15
P C Tzedakis, M Crucifix, T Mitsui, E W Wolff
The pacing of glacial-interglacial cycles during the Quaternary period (the past 2.6 million years) is attributed to astronomically driven changes in high-latitude insolation. However, it has not been clear how astronomical forcing translates into the observed sequence of interglacials. Here we show that before one million years ago interglacials occurred when the energy related to summer insolation exceeded a simple threshold, about every 41,000 years. Over the past one million years, fewer of these insolation peaks resulted in deglaciation (that is, more insolation peaks were 'skipped'), implying that the energy threshold for deglaciation had risen, which led to longer glacials...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/28229034/comprehensive-review-of-non-operative-management-of-hallux-rigidus
#16
REVIEW
Charles Kon Kam King, James Loh Sy, Qishi Zheng, Kinjal V Mehta
This article aims to provide an evidence-based literature review for the non-operative management of hallux rigidus. Currently, there is very little article on the evidence for the non-operative management of hallux rigidus. A comprehensive evidence-based literature review of the PubMed database conducted in November 2016, identified 11 relevant articles out of 560 articles assessing the efficacy of non-operative modalities for hallux rigidus. The 11 studies were then assigned to a level of evidence (I-IV)...
January 20, 2017: Curēus
https://www.readbyqxmd.com/read/28226882/development-of-a-real-time-activity-monitoring-android-application-utilizing-smartstep
#17
Nagaraj Hegde, Edward Melanson, Edward Sazonov, Nagaraj Hegde, Edward Melanson, Edward Sazonov, Nagaraj Hegde, Edward Melanson, Edward Sazonov
Footwear based activity monitoring systems are becoming popular in academic research as well as consumer industry segments. In our previous work, we had presented developmental aspects of an insole based activity and gait monitoring system-SmartStep, which is a socially acceptable, fully wireless and versatile insole. The present work describes the development of an Android application that captures the SmartStep data wirelessly over Bluetooth Low energy (BLE), computes features on the received data, runs activity classification algorithms and provides real time feedback...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223505/light-driven-growth-in-amazon-evergreen-forests-explained-by-seasonal-variations-of-vertical-canopy-structure
#18
Hao Tang, Ralph Dubayah
Light-regime variability is an important limiting factor constraining tree growth in tropical forests. However, there is considerable debate about whether radiation-induced green-up during the dry season is real, or an apparent artifact of the remote-sensing techniques used to infer seasonal changes in canopy leaf area. Direct and widespread observations of vertical canopy structures that drive radiation regimes have been largely absent. Here we analyze seasonal dynamic patterns between the canopy and understory layers in Amazon evergreen forests using observations of vertical canopy structure from a spaceborne lidar...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28209276/the-aahks-clinical-research-award-what-are-the-costs-of-knee-osteoarthritis-in-the-year-prior-to-total-knee-arthroplasty
#19
Nicholas A Bedard, Spencer B Dowdle, Christopher A Anthony, David E DeMik, Michael A McHugh, Kevin J Bozic, John J Callaghan
BACKGROUND: Despite American Academy of Orthopaedic Surgeons Clinical Practice Guidelines (CPGs) related to the non-arthroplasty management of osteoarthritis (OA) of the knee, non-recommended treatments remain in common use. We sought to determine the costs associated with non-arthroplasty management of knee OA in the year prior to total knee arthroplasty (TKA) and stratify them by CPG recommendation status. METHODS: The Humana database was reviewed from 2007 to 2015 for primary TKA patients...
January 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28192522/body-size-and-lower-limb-posture-during-walking-in-humans
#20
Martin Hora, Libor Soumar, Herman Pontzer, Vladimír Sládek
We test whether locomotor posture is associated with body mass and lower limb length in humans and explore how body size and posture affect net joint moments during walking. We acquired gait data for 24 females and 25 males using a three-dimensional motion capture system and pressure-measuring insoles. We employed the general linear model and commonality analysis to assess the independent effect of body mass and lower limb length on flexion angles at the hip, knee, and ankle while controlling for sex and velocity...
2017: PloS One
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