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https://www.readbyqxmd.com/read/28432935/accelerometry-based-assessment-and-detection-of-early-signs-of-balance-deficits
#1
Heidi Similä, Milla Immonen, Miikka Ermes
Falls are the cause for more than half of the injury-related hospitalizations among older people. Accurate assessment of individuals' fall risk could enable targeted interventions to reduce the risk. This paper presents a novel method for using wearable accelerometers to detect early signs of deficits in balance from gait. Gait acceleration data were analyzed from 35 healthy female participants (73.86±5.40 years). The data were collected with waist-mounted accelerometer and the participants performed three supervised balance tests: Berg Balance Scale (BBS), Timed-Up-and-Go (TUG) and 4m walk...
April 13, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28431622/quantitative-biomechanical-assessment-of-trunk-control-in-huntington-s-disease-reveals-more-impairment-in-static-than-dynamic-tasks
#2
Deb A Kegelmeyer, Sandra K Kostyk, Nora E Fritz, Marianne M Fiumedora, Ajit Chaudhari, Marilly Palettas, Gregory Young, Anne D Kloos
Postural instability is common in individuals with Huntington's disease (HD), yet little is known about control of the trunk during static and dynamic activities. We compared the trunk motion of 41 individuals with HD and 36 controls at thoracic and pelvic levels during sitting, standing, and walking using wearable iPod sensors. We also examined the ability of individuals with HD to respond to an auditory cue to modify trunk position when the pelvis moved >8° in sagittal or frontal planes during sitting using custom software...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28430147/suitability-of-strain-gage-sensors-for-integration-into-smart-sport-equipment-a-golf-club-example
#3
Anton Umek, Yuan Zhang, Sašo Tomažič, Anton Kos
Wearable devices and smart sport equipment are being increasingly used in amateur and professional sports. Smart sport equipment employs various sensors for detecting its state and actions. The correct choice of the most appropriate sensor(s) is of paramount importance for efficient and successful operation of sport equipment. When integrated into the sport equipment, ideal sensors are unobstructive, and do not change the functionality of the equipment. The article focuses on experiments for identification and selection of sensors that are suitable for the integration into a golf club with the final goal of their use in real time biofeedback applications...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28429757/soft-electronics-enabled-ergonomic-human-computer-interaction-for-swallowing-training
#4
Yongkuk Lee, Benjamin Nicholls, Dong Sup Lee, Yanfei Chen, Youngjae Chun, Chee Siang Ang, Woon-Hong Yeo
We introduce a skin-friendly electronic system that enables human-computer interaction (HCI) for swallowing training in dysphagia rehabilitation. For an ergonomic HCI, we utilize a soft, highly compliant ("skin-like") electrode, which addresses critical issues of an existing rigid and planar electrode combined with a problematic conductive electrolyte and adhesive pad. The skin-like electrode offers a highly conformal, user-comfortable interaction with the skin for long-term wearable, high-fidelity recording of swallowing electromyograms on the chin...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429542/study-of-the-wearable-cardioverter-defibrillator-in-advanced-heart-failure-patients-swift
#5
Alon Barsheshet, Valentina Kutyifa, Theodora Vamvouris, Arthur J Moss, Yitschak Biton, Leway Chen, Eugene Storozynsky, Chingping Wan, Steven J Szymkiewicz, Ilan Goldenberg
INTRODUCTION: The wearable cardioverter defibrillator (WCD) may allow stabilization until reassessment for an implantable cardioverter defibrillator (ICD) among high-risk HF patients. However, there are limited data on the WCD benefit in the acute decompensated HF setting. METHODS AND RESULTS: The Study of the Wearable Cardioverter Defibrillator in Advanced Heart-Failure Patients (SWIFT) was a prospective clinical trial carried out at two medical centers. Patients hospitalized with advanced HF symptoms and reduced left ventricular ejection function (LVEF) were enrolled and prescribed a WCD prior to discharge for a total of 3 months...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28429276/enhancing-thermal-stability-of-a-highly-concentrated-insulin-formulation-with-pluronic-f-127-for-long-term-use-in-microfabricated-implantable-devices
#6
Jason Li, Michael K Chu, Brian Lu, Sako Mirzaie, Kuan Chen, Claudia R Gordijo, Oliver Plettenburg, Adria Giacca, Xiao Yu Wu
Development of highly concentrated formulations of protein and peptide drugs is a major challenge due to increased susceptibility to aggregation and precipitation. Numerous drug delivery systems including implantable and wearable controlled-release devices require thermally stable formulations with high concentrations due to limited device sizes and long-term use. Herein we report a highly concentrated insulin gel formulation (up to 80 mg/mL, corresponding to 2200 IU/mL), stabilized with a non-ionic amphiphilic triblock copolymer (i...
April 20, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28428979/use-of-consumer-wearable-devices-to-promote-physical-activity-a-review-of-health-intervention-studies
#7
Steven S Coughlin, Jessica Stewart
BACKGROUND: Although many wearable devices for monitoring and tracking physical activity are available to consumers, relatively few research studies have been conducted to determine their efficacy in promoting health. METHODS: In this article, data on the use of consumer wearable devices in promoting healthy behaviors are summarized based upon bibliographic searches in PubMed and Psychology and Behavioral Sciences Collection with relevant search terms through September 2016...
November 2016: Journal of Environment and Health Sciences
https://www.readbyqxmd.com/read/28428770/prolonged-walking-with-a-wearable-system-providing-intelligent-auditory-input-in-people-with-parkinson-s-disease
#8
Pieter Ginis, Elke Heremans, Alberto Ferrari, Kim Dockx, Colleen G Canning, Alice Nieuwboer
Rhythmic auditory cueing is a well-accepted tool for gait rehabilitation in Parkinson's disease (PD), which can now be applied in a performance-adapted fashion due to technological advance. This study investigated the immediate differences on gait during a prolonged, 30 min, walk with performance-adapted (intelligent) auditory cueing and verbal feedback provided by a wearable sensor-based system as alternatives for traditional cueing. Additionally, potential effects on self-perceived fatigue were assessed...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28426512/technology-in-s-c-assessing-bodyweight-squat-technique-with-wearable-sensors
#9
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualised feedback regarding exercise performance...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28425667/soft-multifunctional-composites-and-emulsions-with-liquid-metals
#10
REVIEW
Navid Kazem, Tess Hellebrekers, Carmel Majidi
Binary mixtures of liquid metal (LM) or low-melting-point alloy (LMPA) in an elastomeric or fluidic carrier medium can exhibit unique combinations of electrical, thermal, and mechanical properties. This emerging class of soft multifunctional composites have potential applications in wearable computing, bio-inspired robotics, and shape-programmable architectures. The dispersion phase can range from dilute droplets to connected networks that support electrical conductivity. In contrast to deterministically patterned LM microfluidics, LMPA- and LM-embedded elastomer (LMEE) composites are statistically homogenous and exhibit effective bulk properties...
April 20, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28424755/rapid-low-cost-prototyping-of-transdermal-devices-for-personal-healthcare-monitoring
#11
Sanjiv Sharma, Anwer Saeed, Christopher Johnson, Nikolaj Gadegaard, Anthony Eg Cass
The next generation of devices for personal healthcare monitoring will comprise molecular sensors to monitor analytes of interest in the skin compartment. Transdermal devices based on microneedles offer an excellent opportunity to explore the dynamics of molecular markers in the interstitial fluid, however good acceptability of these next generation devices will require several technical problems associated with current commercially available wearable sensors to be overcome. These particularly include reliability, comfort and cost...
April 2017: Sensing and Bio-Sensing Research
https://www.readbyqxmd.com/read/28424026/walking-ability-following-hybrid-assistive-limb-treatment-for-a-patient-with-chronic-myelopathy-after-surgery-for-cervical-ossification-of-the-posterior-longitudinal-ligament
#12
Shigeki Kubota, Tetsuya Abe, Hideki Kadone, Kengo Fujii, Yukiyo Shimizu, Aiki Marushima, Tomoyuki Ueno, Hiroaki Kawamoto, Yasushi Hada, Akira Matsumura, Yoshiyuki Sankai, Masashi Yamazaki
CONTEXT: The hybrid assistive limb (HAL) (the wearable robot) can assist kinesis during voluntary control of hip and knee joint motion by detecting the wearer's bioelectric signals on the surface of their skin. The purpose of this study was to report on walking ability following the wearable robot treatment in a patient with chronic myelopathy after surgery for cervical ossification of the posterior longitudinal ligament (OPLL). FINDINGS: The patient was a 66-year-old woman with cervical OPLL who was able to ambulate independently with the aid of bilateral crutches...
April 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28423421/efficacy-of-some-wearable-devices-compared-with-spray-on-insect-repellents-for-the-yellow-fever-mosquito-aedes-aegypti-l-diptera-culicidae
#13
Stacy D Rodriguez, Hae-Na Chung, Kristina K Gonzales, Julia Vulcan, Yiyi Li, Jorge A Ahumada, Hector M Romero, Mario De La Torre, Fangjun Shu, Immo A Hansen
The current Zika health crisis in the Americas has created an intense interest in mosquito control methods and products. Mosquito vectors of Zika are of the genus Aedes, mainly the yellow fever mosquito, Aedes aegypti. L. The use of repellents to alter mosquito host seeking behavior is an effective method for the prevention of mosquito-borne diseases. A large number of different spray-on repellents and wearable repellent devices are commercially available. The efficacies of many repellents are unknown. This study focuses on the efficacy of eleven different repellents in reducing the number of Ae...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28422253/3d-printed-poly-vinylidene-fluoride-carbon-nanotube-composites-as-a-tunable-low-cost-chemical-vapour-sensing-platform
#14
Z C Kennedy, J F Christ, K A Evans, B W Arey, L E Sweet, M G Warner, R L Erikson, C A Barrett
We report the production of flexible, highly-conductive poly(vinylidene fluoride) (PVDF) and multi-walled carbon nanotube (MWCNT) composites as filament feedstock for 3D printing. This account further describes, for the first time, fused deposition modelling (FDM) derived 3D-printed objects with chemiresistive properties in response to volatile organic compounds. The typically prohibitive thermal expansion and die swell characteristics of PVDF were minimized by the presence of MWCNTs in the composites enabling straightforward processing and printing...
April 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28422044/design-of-flexible-pani-coated-cuo-tio2-sio2-heterostructure-nanofibers-with-high-ammonia-sensing-response-values
#15
Zengyuan Pang, Qingxin Nie, Pengfei Lv, Jian Yu, Fenglin Huang, Qufu Wei
We report a room temperature ammonia sensor with extra high response values and ideal flexibility, including polyaniline (PANI) coated titanium dioxide- silicon dioxide (TiO2-SiO2) or copper oxide- titanium dioxide- silicon dioxide (CuO-TiO2-SiO2) composite nanofibers. Such flexible inorganic TiO2-SiO2 and CuO-TiO2-SiO2 composite nanofibers were prepared by electrospinning, followed by calcination. Then in situ polymerization of aniline monomers was operated with inorganic TiO2-SiO2 and CuO-TiO2-SiO2 composite nanofibers as templates...
April 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28421735/a-self-healable-and-cold-resistant-supercapacitor-based-on-a-multifunctional-hydrogel-electrolyte
#16
Feng Tao, Liming Qin, Zhikui Wang, Qinmin Pan
Excellent self-healability and cold-resistance are attractive properties for a portable/wearable energy-storage device. However, achieving the features is fundamentally dependent on an intrinsically self-healable electrolyte with high ionic conduction at low temperature. Here we report such a hydrogel electrolyte comprising sodium alginate cross-linked by dynamic catechol-borate ester bonding. Since its dynamically cross-linked alginate network can tolerate high content inorganic salts, the electrolyte possesses excellent healing efficiency/cyclability but also high ionic conduction at both room temperature and low temperature...
April 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28421180/usability-evaluations-of-a-wearable-inertial-sensing-system-and-quality-of-movement-metrics-for-stroke-survivors-by-care-professionals
#17
Bart Klaassen, Bert-Jan F van Beijnum, Jeremia P Held, Jasper Reenalda, Fokke B van Meulen, Peter H Veltink, Hermie J Hermens
BACKGROUND: Inertial motion capture systems are used in many applications such as measuring the movement quality in stroke survivors. The absence of clinical effectiveness and usability evidence in these assistive technologies into rehabilitation has delayed the transition of research into clinical practice. Recently, a new inertial motion capture system was developed in a project, called INTERACTION, to objectively measure the quality of movement (QoM) in stroke survivors during daily-life activity...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28420998/instant-biofeedback-provided-by-wearable-sensor-technology-can-help-to-optimize-exercise-and-prevent-injury-and-overuse
#18
Peter Düking, Hans-Christer Holmberg, Billy Sperlich
No abstract text is available yet for this article.
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28420599/use-of-machine-learning-classifiers-and-sensor-data-to-detect-neurological-deficit-in-stroke-patients
#19
Eunjeong Park, Hyuk-Jae Chang, Hyo Suk Nam
BACKGROUND: The pronator drift test (PDT), a neurological examination, is widely used in clinics to measure motor weakness of stroke patients. OBJECTIVE: The aim of this study was to develop a PDT tool with machine learning classifiers to detect stroke symptoms based on quantification of proximal arm weakness using inertial sensors and signal processing. METHODS: We extracted features of drift and pronation from accelerometer signals of wearable devices on the inner wrists of 16 stroke patients and 10 healthy controls...
April 18, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28420483/an-evaluation-of-wearable-sensors-and-their-placements-for-analyzing-construction-worker-s-trunk-posture-in-laboratory-conditions
#20
Wonil Lee, Edmund Seto, Ken-Yu Lin, Giovanni C Migliaccio
This study investigates the effect of sensor placement on the analysis of trunk posture for construction activities using two off-the-shelf systems. Experiments were performed using a single-parameter monitoring wearable sensor (SPMWS), the ActiGraph GT9X Link, which was worn at six locations on the body, and a multi-parameter monitoring wearable sensor (MPMWS), the Zephyr BioHarness™3, which was worn at two body positions. One healthy male was recruited and conducted 10 experiment sessions to repeat measurements of trunk posture within our study...
April 15, 2017: Applied Ergonomics
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