keyword
MENU ▼
Read by QxMD icon Read
search

passive self-motion

keyword
https://www.readbyqxmd.com/read/28453288/photothermal-transport-of-dna-in-entropy-landscape-plasmonic-waveguides
#1
Cameron L C Smith, Anil H Thilsted, Jonas N Pedersen, Tomas H Youngman, Julia C Dyrnum, Nicolai A Michaelsen, Rodolphe Marie, Anders Kristensen
The ability to handle single, free molecules in lab-on-a-chip systems is key to the development of advanced biotechnologies. Entropic confinement offers passive control of polymers in nanofluidic systems by locally asserting a molecule's number of available conformation states through structured landscapes. Separately, a range of plasmonic configurations have demonstrated active manipulation of nano-objects by harnessing concentrated electric fields. The integration of these two independent techniques promises a range of sophisticated and complementary functions to handle, for example, DNA, but numerous difficulties, in particular, conflicting requirements of channel size, have prevented progress...
April 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28439720/the-impact-of-oral-promethazine-on-human-whole-body-motion-perceptual-thresholds
#2
Ana Diaz-Artiles, Adrian J Priesol, Torin K Clark, David P Sherwood, Charles M Oman, Laurence R Young, Faisal Karmali
Despite the widespread treatment of motion sickness symptoms using drugs and the involvement of the vestibular system in motion sickness, little is known about the effects of anti-motion sickness drugs on vestibular perception. In particular, the impact of oral promethazine, widely used for treating motion sickness, on vestibular perceptual thresholds has not previously been quantified. We examined whether promethazine (25 mg) alters vestibular perceptual thresholds in a counterbalanced, double-blind, within-subject study...
April 24, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28434022/effects-of-vestibular-disorders-on-vestibular-reflex-and-imagery
#3
B S Cohen, J Provasi, P Leboucher, I Israël
The aim of this study was to establish the effect of vestibular lesion on vestibular imagery. Subjects were required to estimate verbally their passively travelled rotation angles in complete darkness, i.e., to activate vestibular imagery. During motion, the vestibulo-ocular reflex (VOR) was measured. Thus, we examined the coherence between the vestibulo-ocular reflex and self-rotation imagery, with vestibular-lesioned patients and healthy participants. Unilateral acute and chronic patients, bilateral patients, and healthy subjects were compared...
April 22, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28422641/supporting-stroke-motor-recovery-through-a-mobile-application-a-pilot-study
#4
Sonia Lawson, Ziying Tang, Jinjuan Feng
Neuroplasticity and motor learning are promoted with repetitive movement, appropriate challenge, and performance feedback. ARMStrokes, a smartphone application, incorporates these qualities to support motor recovery. Engaging exercises are easily accessible for improved compliance. In a multiple-case, mixed-methods pilot study, the potential of this technology for stroke motor recovery was examined. Exercises calibrated to the participant's skill level targeted forearm, elbow, and shoulder motions for a 6-wk protocol...
May 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28420605/scalable-passive-sleep-monitoring-using-mobile-phones-opportunities-and-obstacles
#5
Sohrab Saeb, Thaddeus R Cybulski, Stephen M Schueller, Konrad P Kording, David C Mohr
BACKGROUND: Sleep is a critical aspect of people's well-being and as such assessing sleep is an important indicator of a person's health. Traditional methods of sleep assessment are either time- and resource-intensive or suffer from self-reporting biases. Recently, researchers have started to use mobile phones to passively assess sleep in individuals' daily lives. However, this work remains in its early stages, having only examined relatively small and homogeneous populations in carefully controlled contexts...
April 18, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28318394/effect-of-foot-and-ankle-immobilization-on-able-bodied-gait-as-a-model-to-increase-understanding-about-bilateral-transtibial-amputee-gait
#6
Antonia Nepomuceno, Matthew J Major, Rebecca Stine, Steven Gard
BACKGROUND: The anatomical foot-ankle complex facilitates advancement of the stance limb through foot rockers and late-stance power generation during walking, but this mechanism is altered for persons with bilateral transtibial amputation when using passive prostheses. OBJECTIVES: To study the effects of bilateral foot and ankle immobilization on able-bodied gait to serve as a model for understanding gait of persons with bilateral transtibial amputation and associated compensatory mechanisms...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28279850/accuracy-and-repeatability-of-single-pose-calibration-of-inertial-measurement-units-for-whole-body-motion-analysis
#7
Xavier Robert-Lachaine, Hakim Mecheri, Christian Larue, André Plamondon
Portable inertial measurement units (IMUs) are suitable for motion analysis outside the laboratory. However, IMUs depend on the calibration of each body segment to measure human movement. Different calibration approaches have been developed for simplicity of use or similarity to laboratory motion analysis, but they have not been extensively examined. The main objective of the study was to determine the accuracy and repeatability of two common single-pose calibrations (N-pose and T-pose) under different conditions of placement (self-placement and passive placement), as well as their similarity to laboratory analysis based on anatomical landmarks...
March 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28271408/moving-or-being-moved-that-makes-a-difference
#8
Hans Straka, Boris P Chagnaud
During head/body movements, gaze stability is ensured by transformation of motion-related sensory signals into respective motor commands. Passively induced motion in all vertebrates including amphibians evokes a robust vestibulo-ocular reflex, suggesting an equally important role of this motor reaction during actively induced motion. However, during self-induced movements including locomotion, motor efference copies offer a convenient additional substrate for counteracting retinal image displacements. During such locomotor activity in Xenopus laevis tadpoles, spinal central pattern generator-derived efference copies elicit spatio-temporally specific eye movements, which are functionally appropriate to offset swimming-related retinal image displacements...
March 7, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28249347/patient-self-assessed-passive-range-of-motion-of-the-knee-cannot-replace-health-professional-measurements
#9
Jens Borgbjerg, Frank Madsen, Anders Odgaard
The purpose of this study was to investigate whether patients can accurately self-assess their knee passive range of motion (PROM). A picture-based questionnaire for patient self-assessment of knee PROM was developed and posted to patients. The self-assessed PROM from 58 patients was compared with surgeon-assessed PROM using a short-arm goniometer. Agreement between the measurement methods was calculated with the Bland-Altman method. We calculated the sensitivity and specificity of patient-assessed PROM in dichotomously detecting knee motion impairment in both flexion (≤ 100 degrees) and extension (≥ 10-degree flexion contracture)...
March 1, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28210065/the-effects-of-therapeutic-exercise-using-pnf-on-the-size-of-calcium-deposits-pain-self-awareness-and-shoulder-joint-function-in-a-calcific-tendinitis-patient-a-case-study
#10
Dong-Gun Oh, Kyung-Tae Yoo
[Purpose] The purpose of this case study was to identify the effects of independent and intensive therapeutic exercise using Proprioceptive neuromuscular facilitation on the size of calcium deposits, pain self-awareness, and shoulder joint function in a patient with calcific tendonitis. [Subject and Methods] The subject was a 42-year-old female patient with calcific tendonitis and acute pain who had difficulty with active movement and problems with general function. The independent and intensive Proprioceptive neuromuscular facilitation exercise was applied for 40 min twice a day five times a week for two weeks for a total of 20 times...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28205508/global-dynamics-of-non-equilibrium-gliding-in-animals
#11
Isaac Yeaton, Jake Socha, Shane Ross
Gliding flight - moving horizontally downward through the air without power - has evolved in a broad diversity of taxa and serves numerous ecologically relevant functions such as predator escape, expanding foraging locations, and finding mates, and has been suggested as an evolutionary pathway to powered flight. Historically, gliding has been conceptualized using the idealized conditions of equilibrium, in which the net aerodynamic force on the glider balances its weight. While this assumption is appealing for its simplicity, recent studies of glide trajectories have shown that equilibrium gliding is not the norm for most species...
February 16, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28167184/is-self-massage-an-effective-joint-range-of-motion-strategy-a-pilot-study
#12
Estêvão Rios Monteiro, Mark Tyler Cavanaugh, David Michael Frost, Jefferson da Silva Novaes
Increases in joint range of motion may be beneficial in both improving performance and reducing the risk of injury. The purpose of this study was to investigate short-term changes in passive hip flexion (HF) and extension (HE) after foam rolling (FR) and roller massage (RM) durations of 60 and 120s. Ten recreationally active men (27.6 ± 2.4 years old; 164.8 ± 6.6 cm; 62.2 ± 8.0 kg; 24.2 ± 2.1 m(2)/kg) were recruited for this study. Subjects performed foam rolling (FR) and roller massage (RM) on the hamstrings for 60 (FR60 and RM60) and 120 (FR120 and RM120) seconds...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28152452/upper-extremity-motion-during-gait-in-adolescents-with-structural-leg-length-discrepancy-an-exploratory-study
#13
Fabiola Angelico, Marie Freslier, Jacqueline Romkes, Reinald Brunner, Stefan Schmid
BACKGROUND AND PURPOSE: Depending on the extent of a structural leg length discrepancy (LLD), several compensatory mechanisms take place in order to maintain function and to optimize energy consumption during gait. However, studies describing the influence of a structural LLD on upper limb motion are lacking. The current study therefore aimed at the evaluation of upper limb motion during gait in LLD patients compared to healthy controls. METHODS: Motion capture data from 14 patients with structural LLD and 15 healthy controls that were collected during barefoot walking at a self-selected speed were retrospectively analyzed...
January 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28147512/pattern-growth-and-aging-in-aggregation-kinetics-of-a-vicsek-like-active-matter-model
#14
Subir K Das
Via molecular dynamics simulations, we study kinetics in a Vicsek-like phase-separating active matter model. Quantitative results, for isotropic bicontinuous pattern, are presented on the structure, growth, and aging. These are obtained via the two-point equal-time density-density correlation function, the average domain length, and the two-time density autocorrelation function. Both the correlation functions exhibit basic scaling properties, implying self-similarity in the pattern dynamics, for which the average domain size exhibits a power-law growth in time...
January 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28144623/eye-movements-in-darkness-modulate-self-motion-perception
#15
Ivar Adrianus H Clemens, Luc P J Selen, Antonella Pomante, Paul R MacNeilage, W Pieter Medendorp
During self-motion, humans typically move the eyes to maintain fixation on the stationary environment around them. These eye movements could in principle be used to estimate self-motion, but their impact on perception is unknown. We had participants judge self-motion during different eye-movement conditions in the absence of full-field optic flow. In a two-alternative forced choice task, participants indicated whether the second of two successive passive lateral whole-body translations was longer or shorter than the first...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28095134/physical-and-occupational-therapy-for-a-teenager-with-acute-flaccid-myelitis-a-case-report
#16
Tracy Kornafel, Elaine Y Tsao, Emily Sabelhaus, Lori Surges, Susan D Apkon
AIMS: The purpose of this case report is to describe the inpatient rehabilitation program of a 13-year-old boy with acute flaccid myelitis (AFM), specific to physical and occupational therapy examination, treatment, and outcomes. CASE DESCRIPTION: AFM is a rare, acute neurologic illness in children and young adults who present with weakness and/or paralysis of unknown etiology. The teenager was admitted to the program, dependent for all mobility and self-care. Interventions focused on range of motion, transfer training, self-care, power wheelchair mobility, and environmental adaptations...
January 17, 2017: Physical & Occupational Therapy in Pediatrics
https://www.readbyqxmd.com/read/27983853/quantifying-the-heat-dissipation-from-a-molecular-motor-s-transport-properties-in-nonequilibrium-steady-states
#17
Wonseok Hwang, Changbong Hyeon
Theoretical analysis, which maps single-molecule time trajectories of a molecular motor onto unicyclic Markov processes, allows us to evaluate the heat dissipated from the motor and to elucidate its dependence on the mean velocity and diffusivity. Unlike passive Brownian particles in equilibrium, the velocity and diffusion constant of molecular motors are closely inter-related. In particular, our study makes it clear that the increase of diffusivity with the heat production is a natural outcome of active particles, which is reminiscent of the recent experimental premise that the diffusion of an exothermic enzyme is enhanced by the heat released from its own catalytic turnover...
December 20, 2016: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/27836071/the-treatment-of-neck-pain-associated-disorders-and-whiplash-associated-disorders-a-clinical-practice-guideline
#18
André E Bussières, Gregory Stewart, Fadi Al-Zoubi, Philip Decina, Martin Descarreaux, Jill Hayden, Brenda Hendrickson, Cesar Hincapié, Isabelle Pagé, Steven Passmore, John Srbely, Maja Stupar, Joel Weisberg, Joseph Ornelas
OBJECTIVE: The objective was to develop a clinical practice guideline on the management of neck pain-associated disorders (NADs) and whiplash-associated disorders (WADs). This guideline replaces 2 prior chiropractic guidelines on NADs and WADs. METHODS: Pertinent systematic reviews on 6 topic areas (education, multimodal care, exercise, work disability, manual therapy, passive modalities) were assessed using A Measurement Tool to Assess Systematic Reviews (AMSTAR) and data extracted from admissible randomized controlled trials...
October 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/27706163/a-motor-gradient-and-clustering-model-of-the-centripetal-motility-of-mtocs-in-meiosis-i-of-mouse-oocytes
#19
Neha Khetan, Chaitanya A Athale
Asters nucleated by Microtubule (MT) organizing centers (MTOCs) converge on chromosomes during spindle assembly in mouse oocytes undergoing meiosis I. Time-lapse imaging suggests that this centripetal motion is driven by a biased 'search-and-capture' mechanism. Here, we develop a model of a random walk in a drift field to test the nature of the bias and the spatio-temporal dynamics of the search process. The model is used to optimize the spatial field of drift in simulations, by comparison to experimental motility statistics...
October 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27664972/relationships-between-varus-valgus-laxity-of-the-severely-osteoarthritic-knee-and-gait-instability-clinical-performance-and-function
#20
Gregory M Freisinger, Erin E Hutter, Jacqueline Lewis, Jeffrey F Granger, Andrew H Glassman, Matthew D Beal, Xueliang Pan, Laura C Schmitt, Robert A Siston, Ajit M W Chaudhari
Increased varus-valgus laxity has been reported in individuals with knee osteoarthritis (OA) compared to controls. However, the majority of previous investigations may not report truly passive joint laxity, as their tests have been performed on conscious participants who could be guarding against motion with muscle contraction during laxity evaluation. The purpose of this study was to investigate how a measure of passive knee laxity, recorded when the participant is under anesthesia, is related to varus-valgus excursion during gait, clinical measures of performance, perceived instability, and self-reported function in participants with severe knee OA...
September 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
keyword
keyword
103169
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"