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https://www.readbyqxmd.com/read/28433867/validity-and-repeatability-of-inertial-measurement-units-for-measuring-gait-parameters
#1
Edward P Washabaugh, Tarun Kalyanaraman, Peter G Adamczyk, Edward S Claflin, Chandramouli Krishnan
Inertial measurement units (IMUs) are small wearable sensors that have tremendous potential to be applied to clinical gait analysis. They allow objective evaluation of gait and movement disorders outside the clinic and research laboratory, and permit evaluation on large numbers of steps. However, repeatability and validity data of these systems are sparse for gait metrics. The purpose of this study was to determine the validity and between-day repeatability of spatiotemporal metrics (gait speed, stance percent, swing percent, gait cycle time, stride length, cadence, and step duration) as measured with the APDM Opal IMUs and Mobility Lab system...
April 12, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28428770/prolonged-walking-with-a-wearable-system-providing-intelligent-auditory-input-in-people-with-parkinson-s-disease
#2
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/28424026/walking-ability-following-hybrid-assistive-limb-treatment-for-a-patient-with-chronic-myelopathy-after-surgery-for-cervical-ossification-of-the-posterior-longitudinal-ligament
#3
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/28410250/effects-of-antigravity-treadmill-training-on-gait-balance-and-fall-risk-in-children-with-diplegic-cerebral-palsy
#4
Shamekh Mohamed El-Shamy
OBJECTIVE: The aim of this study was to investigate the effects of antigravity treadmill training on gait, balance, and fall risk in children with diplegic cerebral palsy. DESIGN: Thirty children with diplegic cerebral palsy were selected for this randomized controlled study. They were randomly assigned to (1) an experimental group that received antigravity treadmill training (20 mins/d, 3 d/wk) together with traditional physical therapy for 3 successive mos and (2) a control group that received only traditional physical therapy program for the same period...
April 13, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28408158/validity-of-the-activpal3-activity-monitor-in-people-moderately-affected-by-multiple-sclerosis
#5
E H Coulter, L Miller, S McCorkell, C McGuire, K Algie, J Freeman, B Weller, P G Mattison, A McConnachie, O Wu, L Paul
Walking is the primary form of physical activity performed by people with Multiple Sclerosis (MS), therefore it is important to ensure the validity of tools employed to measure walking activity. The aim of this study was to assess the criterion validity of the activPAL3 activity monitor during overground walking in people with MS. Validity of the activPAL3 accelerometer was compared to video observation in 20 people moderately affected by MS. Participants walked 20-30m twice along a straight quiet corridor at a comfortable speed...
April 10, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28407505/a-randomized-controlled-trial-on-providing-ankle-foot-orthoses-in-patients-with-sub-acute-stroke-short-term-kinematic-and-spatiotemporal-effects-and-effects-of-timing
#6
Corien D M Nikamp, Marte S H Hobbelink, Job van der Palen, Hermie J Hermens, Johan S Rietman, Jaap H Buurke
Initial walking function is often limited after stroke, and regaining walking ability is an important goal in rehabilitation. Various compensatory movement strategies to ensure sufficient foot-clearance are reported. Ankle-foot orthoses (AFOs) are often prescribed to improve foot-clearance and may influence these strategies. However, research studying effects of actual AFO-provision early after stroke is limited. We conducted an explorative randomized controlled trial and aimed to study the short-term effects of AFO-provision on kinematic and spatiotemporal parameters in patients early after stroke...
March 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28404581/maternal-and-postnatal-high-fat-diet-consumption-programs-energy-balance-and-hypothalamic-melanocortin-signaling-in-nonhuman-primate-offspring
#7
Elinor L Sullivan, Heidi M Rivera, Cadence A True, Juliana G Franco, Karalee Baquero, Tyler A Dean, Jeanette C Valleau, Diana L Takahashi, Tim Frazee, Genevieve Hanna, Melissa A Kirigiti, Leigh Ann A Bauman, Kevin L Grove, Paul Kievit
Maternal high-fat diet (HFD) consumption during pregnancy decreased fetal body weight and impacted development of hypothalamic melanocortin neural circuitry in nonhuman primate offspring. We investigated whether these impairments during gestation persisted in juvenile offspring and examined the interaction between maternal and early postnatal HFD consumption. Adult dams consumed either a control diet (CTR, 15% calories from fat) or a high saturated-fat diet (HFD, 37% calories from fat) during pregnancy. Offspring were weaned onto a CTR or HFD at approximately 8 months of age...
April 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28398224/inertial-sensor-based-robust-gait-analysis-in-non-hospital-settings-for-neurological-disorders
#8
Can Tunca, Nezihe Pehlivan, Nağme Ak, Bert Arnrich, Gülüstü Salur, Cem Ersoy
The gold standards for gait analysis are instrumented walkways and marker-based motion capture systems, which require costly infrastructure and are only available in hospitals and specialized gait clinics. Even though the completeness and the accuracy of these systems are unquestionable, a mobile and pervasive gait analysis alternative suitable for non-hospital settings is a clinical necessity. Using inertial sensors for gait analysis has been well explored in the literature with promising results. However, the majority of the existing work does not consider realistic conditions where data collection and sensor placement imperfections are imminent...
April 11, 2017: Sensors
https://www.readbyqxmd.com/read/28388932/the-efficacy-of-sodium-benzoate-as-an-adjunctive-treatment-in-early-psychosis-cadence-bz-study-protocol-for-a-randomized-controlled-trial
#9
Alex Ryan, Andrea Baker, Frances Dark, Sharon Foley, Anne Gordon, Sean Hatherill, Stephen Stathis, Sukanta Saha, George Bruxner, Martin Beckman, Drew Richardson, Michael Berk, Olivia Dean, John McGrath, Cadence Working Group, James Scott
BACKGROUND: Psychotic disorders affect up to 3% of the population and are often chronic and disabling. Innovation in the pharmacological treatment of psychosis has remained stagnant in recent decades. In order to improve outcomes for those with psychotic disorders, we present a protocol for the trial of a common food preservative, sodium benzoate, as an adjunctive treatment in early psychosis. METHODS: Persons experiencing early psychosis (n = 160) will be recruited through hospitals and community mental health services in Queensland, Australia...
April 7, 2017: Trials
https://www.readbyqxmd.com/read/28388783/the-reliability-and-validity-of-the-3-min-all-out-cycling-critical-power-test
#10
James Wright, Stewart Bruce-Low, Simon A Jobson
Research suggests that critical power (CP) can be estimated from a single 3-min bout of all-out cycling. The purpose of this study was to investigate the reliability and validity of the 3-min all-out cycling test when carried out at a constant cadence (isokinetic) and against a fixed resistance (linear). 12 participants completed 8 tests: 1) a ramp test; 2-4) 3 fixed power tests to calculate CP and W' using the 1/time mathematical model; 5-8) four 3-min all-out tests to calculate EP and WEP; 2 isokinetic and 2 linear tests...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28384609/dual-task-gait-differences-in-female-and-male-adolescents-following-sport-related-concussion
#11
David R Howell, Andrea Stracciolini, Ellen Geminiani, William P Meehan
Concussion may affect females and males differentially. Identification of gender-related differences after concussion, therefore, may help clinicians with individualized evaluations. We examined potential differences in dual-task gait between females and males after concussion. Thirty-five participants diagnosed with a concussion (49% female, mean age=15.0±2.1 years, 7.5±3.0 days post-injury) and 51 controls (51% female, mean age=14.4±2.1 years) completed a symptom inventory and single/dual-task gait assessment...
April 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28380321/gait-analysis-and-clinical-correlations-in-early-parkinson-s-disease
#12
M Pistacchi, M Gioulis, F Sanson, E De Giovannini, G Filippi, F Rossetto, S Zambito Marsala
The aim of our study was to identify and quantify spatiotemporal and kinematic gait parameters obtained by 3D gait analysis (GA) in a group of Parkinson's disease (PD) patients compared with healthy subjects in order to investigate whether early PD patients could present an abnormal gait pattern. Forty-four patients affected by early-stage PD compared with a control group were analyzed. All participants were evaluated with 3D GA in the gait laboratory. The greatest significance in temporal parameters was found in cadence (102...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28378230/can-older-adults-improve-the-identification-of-moderate-intensity-using-walking-cadence
#13
A G McLellan, Jana Slaght, C M Craig, A Mayo, M Sénéchal, Danielle R Bouchard
BACKGROUND: The majority of older adults do not reach the physical activity guidelines. One possible explanation for this may be that older adults overestimate their physical activity levels, because they are unable to identify exercise intensity. METHODS: Forty-four older adults were recruited and randomly assigned into two walking groups lasting 6 weeks. The intervention group was asked to walk a minimum of 150 min per week at moderate intensity using walking cadence indicated with a pedometer...
April 4, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28378071/can-intervals-enhance-the-inflammatory-response-and-enjoyment-in-upper-body-exercise
#14
Sven P Hoekstra, Nicolette C Bishop, Christof A Leicht
PURPOSE: To investigate the inflammatory and perceptual responses to three different forms of upper-body exercise. METHODS: Twelve recreationally active, able-bodied males performed three work-matched arm-crank sessions in a randomised order: 30 min moderate-intensity continuous (CON), 30 min moderate-intensity with changes in cadence (CAD) and 20 min high-intensity interval training (HIIT). Blood samples were taken pre, post and 2-h post-exercise to determine plasma concentrations of interleukin (IL)-6 and IL-1ra...
April 4, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28368823/monitoring-of-gait-quality-in-patients-with-chronic-pain-of-lower-limbs
#15
Philippe Terrier, Joane Le Carre, Marie-Laure Connaissa, Bertrand Leger, Francois Luthi
Severe injuries of lower extremities often lead to chronic pain and reduced walking abilities. We postulated that measuring free-living gait can provide further information about walking ability in complement to clinical evaluations. We sought to validate a method that characterizes free gaits with a wearable sensor. Over one week, 81 healthy controls (HC) and 66 chronic lower limb pain patients (CLLPP) hospitalized for multidisciplinary rehabilitation wore a simple accelerometer (Actigraph). In the acceleration signals, steady one-minute walks detected numbered 7,835 (5,085 in CLLPP and 2,750 in HC)...
March 28, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28344592/dysbindin-deficiency-modifies-the-expression-of-gaba-neuron-and-ion-permeation-transcripts-in-the-developing-hippocampus
#16
Jennifer Larimore, Stephanie A Zlatic, Miranda Arnold, Kaela S Singleton, Rebecca Cross, Hannah Rudolph, Martha V Bruegge, Andrea Sweetman, Cecilia Garza, Eli Whisnant, Victor Faundez
The neurodevelopmental factor dysbindin is required for synapse function and GABA interneuron development. Dysbindin protein levels are reduced in the hippocampus of schizophrenia patients. Mouse dysbindin genetic defects and other mouse models of neurodevelopmental disorders share defective GABAergic neurotransmission and, in several instances, a loss of parvalbumin-positive interneuron phenotypes. This suggests that mechanisms downstream of dysbindin deficiency, such as those affecting GABA interneurons, could inform pathways contributing to or ameliorating diverse neurodevelopmental disorders...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28341259/effect-of-vitamin-d-supplementation-and-isokinetic-training-on-muscle-strength-explosive-strength-lean-body-mass-and-gait-in-severely-burned-children-a-randomized-controlled-trial
#17
Anwar Abdelgayed Ebid, Shamekh Mohamed El-Shamy, Maysa Abbas Amer
OBJECTIVE: To determine the effects of vitamin D (VD) supplementation and isokinetic training on muscle strength, explosive strength (counter movement jump) (ES), lean body mass (LBM) and gait parameters in severe pediatric burn. METHODS: Forty-eight burned children with circumferential lower extremity burns covering 40-55% of the total body surface area (TBSA), aged 10-16 years (Mean±SD 13.01±1.75), were randomized into the standard of care (n=16), isokinetic (n=17) and VD (n=15) groups...
March 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28329377/time-to-refocus-assessment-of-vision-in-older-adults-contrast-sensitivity-but-not-visual-acuity-is-associated-with-gait-in-older-adults
#18
Eoin Duggan, Orna Donoghue, Rose Anne Kenny, Hilary Cronin, James Loughman, Ciarán Finucane
Background: The relationship between measures of visual function and gait related risk factors for falls is unclear. In this study, we examine the relationship between visual function (visual acuity [VA] and contrast sensitivity [CS] at multiple spatial frequencies) and quantitative spatiotemporal gait, using a large, nationally representative sample of community dwelling older adults. Methods: Participants aged 50 and over were recruited as part of The Irish Longitudinal Study on Ageing (TILDA)...
February 28, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28328565/control-of-walking-speed-in-children-with-cerebral-palsy
#19
Jon R Davids, Nina Q Cung, Suzy Chen, Mitell Sison-Williamson, Anita M Bagley
BACKGROUND: Children's ability to control the speed of gait is important for a wide range of activities. It is thought that the ability to increase the speed of gait for children with cerebral palsy (CP) is common. This study considered 3 hypotheses: (1) most ambulatory children with CP can increase gait speed, (2) the characteristics of free (self-selected) and fast walking are related to motor impairment level, and (3) the strategies used to increase gait speed are distinct among these levels...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28324993/dynamic-knee-muscle-co-contraction-quantified-during-walking
#20
Annachiara Strazza, Alessandro Mengarelli, Valentina Agostini, Marco Knaflitz, Laura Burattini, Sandro Fioretti, Francesco Di Nardo
The purpose of the present study was the quantification of the co-activation patterns of the knee extensor and flexor muscles during walking at self-selected speed and cadence. To this aim, the Statistical Gait Analysis, a recent methodology providing a statistical characterization of gait, was performed on surface EMG signals from Vastus Lateralis (VL) and Medial Hamstrings (MH) in 14 healthy young adult subjects. Muscular co-contraction was assessed as the overlapping period between activation intervals of agonist and antagonist muscles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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