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https://www.readbyqxmd.com/read/28918370/a-metric-study-of-insole-foot-impressions-in-footwear-of-identical-twins
#1
Michael S Nirenberg, Kewal Krishan, Tanuj Kanchan
Foot impressions are of utmost importance in crime scene investigations. Foot impressions are available in the form of barefoot prints, sock-clad footprints, and as impressions within footwear. Sometimes suspects leave their footwear at the crime scene, and the insole of this footwear may contain the foot impression of the suspect which may be important evidence linking him or her to the crime. The task of identification based on the analysis of footprints can be challenging when the footprints belonging to one of the identical twin is available for examination...
September 11, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28918356/what-is-the-price-for-the-duchenne-gait-pattern-in-patients-with-cerebral-palsy
#2
Firooz Salami, Mirjam Niklasch, Britta K Krautwurst, Thomas Dreher, Sebastian I Wolf
Duchenne gait is characterized by trunk lean towards the affected stance limb with the pelvis stable or elevated on the swinging limb side during single limb stance phase. We assessed the relationship between hip abduction moments and trunk kinetics in patients with cerebral palsy showing excessive lateral trunk motion. Data of 18 subjects with bilateral spastic cerebral palsy (CP) and 20 aged matched typically developing subjects (TD) were collected retrospectively. Criteria for patient selection were barefoot walking without aid presenting with excessive lateral trunk motion...
September 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28918002/effect-of-natural-sagittal-trunk-lean-on-standing-balance-in-untreated-scoliotic-girls
#3
Sébastien Leteneur, Émilie Simoneau-Buessinger, Franck Barbier, Charles-Hilaire Rivard, Paul Allard
BACKGROUND: Generally, scoliotic girls have a tendency to lean further back than a comparable group of non-scoliotic girls. To date, no study has addressed how standing balance in untreated scoliotic girls is affected by a natural backwardly or forwardly inclined trunk. METHODS: 27 able-bodied young girls and 27 young girls with a right thoracic curve were classified as leaning forward or backward according to the median of their trunk sagittal inclination. Participants stood upright barefoot...
September 6, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28916956/transitioning-to-minimal-footwear-a-systematic-review-of-methods-and-future-clinical-recommendations
#4
REVIEW
Joe P Warne, Allison H Gruber
BACKGROUND: Recent interest in barefoot running has led to the development of minimalist running shoes that are popular in distance runners. A careful transition to these shoes has been suggested and examined in the literature. However, no guidelines based on systematic evidence have been presented. The purpose of this review is to systematically examine the methods employed in the literature to transition to minimal footwear (MFW), as well as the outcomes to these studies in distance runners...
September 15, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28902682/the-influence-of-foot-strike-technique-on-the-neuromechanical-function-of-the-foot
#5
Luke A Kelly, Dominic J Farris, Glen A Lichtwark, Andrew G Cresswell
PURPOSE: The aim of this study was to investigate the influence of foot-strike technique on longitudinal arch mechanics and intrinsic foot muscle function during running. METHODS: 13 healthy participants ran barefoot on a force-instrumented treadmill at 2.8ms with a forefoot (FFS) and rear-foot (RFS, habitual) running technique, while kinetic, kinematic and electromyographic (EMG) data from the intrinsic foot muscles were collected simultaneously. The longitudinal arch was modeled as a single "mid-foot" joint representing motion of the rear-foot (calcaneus) relative to the forefoot (metatarsals)...
September 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28890649/recent-alcohol-tobacco-and-substance-use-variations-between-rural-and-urban-middle-and-high-school-students
#6
Jacob C Warren, K Bryant Smalley, K Nikki Barefoot
The use of addictive substances by adolescents is a major public health concern; however, rural vs. urban variations are poorly understood. The purpose of the current study was to examine rural-urban differences in the prevalence of recent use of 11 substances in grades 6-12 in a statewide sample of students from the Georgia Student Health Survey II (n = 513,909). We found that rural-urban differences in substance use depend largely upon grade level, with rural middle school students demonstrating higher rates of alcohol, smoking tobacco, and chewing tobacco use, and urban high school students demonstrating higher rates of illicit drugs...
2017: Journal of Child & Adolescent Substance Abuse
https://www.readbyqxmd.com/read/28886059/optimisation-of-a-machine-learning-algorithm-in-human-locomotion-using-principal-component-and-discriminant-function-analyses
#7
Maria Bisele, Martin Bencsik, Martin G C Lewis, Cleveland T Barnett
Assessment methods in human locomotion often involve the description of normalised graphical profiles and/or the extraction of discrete variables. Whilst useful, these approaches may not represent the full complexity of gait data. Multivariate statistical methods, such as Principal Component Analysis (PCA) and Discriminant Function Analysis (DFA), have been adopted since they have the potential to overcome these data handling issues. The aim of the current study was to develop and optimise a specific machine learning algorithm for processing human locomotion data...
2017: PloS One
https://www.readbyqxmd.com/read/28884616/effect-of-walking-in-footwear-with-varying-heel-sole-differentials-on-shank-and-foot-segment-kinematics
#8
Elaine Owen, Stefania Fatone, Andrew Hansen
BACKGROUND: When walking in footwear with a positive "heel sole differential", the sagittal kinematics of the base of the footwear appear to mimic normal barefoot foot kinematics, creating an "effective foot," yet sagittal shank, thigh, and trunk kinematics appear to remain unchanged. These observations have not been quantified. OBJECTIVES: To quantify these observations by assessing the effect of different heel sole differentials on sagittal shank and foot segment kinematics of able-bodied walking...
September 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28869903/biomechanical-differences-between-cases-with-suspected-chronic-exertional-compartment-syndrome-and-asymptomatic-controls-during-running
#9
Andrew Roberts, David Roscoe, David Hulse, Alexander N Bennett, Sharon Dixon
Chronic exertional compartment syndrome (CECS) has been hypothesised, following clinical observations, to be the result of abnormal biomechanics predominantly at the ankle. Treatment of CECS through running re-education to correct these abnormalities has been reported to improve symptoms. However no primary research has been carried out to investigate the movement patterns of those with CECS. This study aimed to compare the running kinematics and muscle activity of cases with CECS and asymptomatic controls...
August 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28867667/long-term-effects-of-orthoses-use-on-the-changes-of-foot-and-ankle-joint-motions-of-spastic-cp-children
#10
Xue-Cheng Liu, David Embrey, Channing Tassone, Kim Zvara, Brenna Brandsma, Roger Lyon, Karin Goodfriend, Sergey Tarima, John Thometz
BACKGROUND: Orthoses are commonly prescribed to children with cerebral palsy (CP) in order to provide foot correction and to improve ambulatory function. Immediate effects of ankle foot orthosis (AFOs) have been investigated, but long term kinematic effects are lacking clinical evidence. OBJECTIVE: To determine changes in pediatric patients with Cerebral Palsy's 3D ankle and foot segment motion between initial, and follow up visits (18 month average time differences) in both barefoot gait and gait with their ankle foot orthotic (AFO)...
August 31, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28865395/factors-influencing-knee-adduction-moment-measurement-a-systematic-review-and-meta-regression-analysis
#11
REVIEW
Scott Telfer, Moritz J Lange, Amanda S M Sudduth
The external knee adduction moment has been identified as a key biomarker in biomechanics research, with associations with this variable and degenerative diseases such as knee osteoarthritis. Heterogeneity in participant characteristics and the protocols used to measure this variable may however complicate its interpretation. Previous reviews have focused on interventions or did not control for potential moderator variables in their analysis. In this meta-regression analysis, we aimed to determine the influence of factors including the cohort type, footwear, and walking speed on the measurement of knee adduction moment...
August 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28861034/playing-music-may-improve-the-gait-pattern-in-patients-with-bilateral-caloric-areflexia-wearing-a-cochlear-implant-results-from-a-pilot-study
#12
Ann Hallemans, Griet Mertens, Paul Van de Heyning, Vincent Van Rompaey
HYPOTHESIS: Auditory information through an active cochlear implant (CI) influences gait parameters in adults with bilateral caloric areflexia and profound sensorineural hearing loss. BACKGROUND: Patients with bilateral caloric areflexia suffer from imbalance, resulting in an increased risk of falling. In case of simultaneous deafness, the lack of auditory feedback results in less awareness of the auditory scene. This combination might produce significant challenges while walking and navigating...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28859075/plantar-pressures-are-elevated-in-people-with-longstanding-diabetes-related-foot-ulcers-during-follow-up
#13
Malindu E Fernando, Robert G Crowther, Peter A Lazzarini, Saiumaeswar Yogakanthi, Kunwarjit S Sangla, Petra Buttner, Rhondda Jones, Jonathan Golledge
OBJECTIVE: High plantar pressures are implicated in the development of diabetes-related foot ulcers. Whether plantar pressures remain high in patients with chronic diabetes-related foot ulcers over time is uncertain. The primary aim of this study was to compare plantar pressures at baseline and three and six months later in participants with chronic diabetes-related foot ulcers (cases) to participants without foot ulcers (controls). METHODS: Standardised protocols were used to measure mean peak plantar pressure and pressure-time integral at 10 plantar foot sites (the hallux, toes, metatarsals 1 to 5, mid-foot, medial heel and lateral heel) during barefoot walking...
2017: PloS One
https://www.readbyqxmd.com/read/28837918/biomechanical-analysis-of-gait-waveform-data-exploring-differences-between-shod-and-barefoot-running-in-habitually-shod-runners
#14
Nicholas Tam, Danielle Prins, Nikhil V Divekar, Robert P Lamberts
The aim of this study was to utilise one-dimensional statistical parametric mapping to compare differences between biomechanical and electromyographical waveforms in runners when running in barefoot or shod conditions. Fifty habitually shod runners were assessed during overground running at their current 10-km race running speed. Electromyography, kinematics and ground reaction forces were collected during these running trials. Joint kinetics were calculated using inverse dynamics. One-dimensional statistical parametric mapping one sample t-test was conducted to assess differences over an entire gait cycle on the variables of interest when barefoot or shod (p<0...
August 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28820647/acute-fatigue-negatively-affects-risk-factors-for-injury-in-trained-but-not-well-trained-habitually-shod-runners-when-running-barefoot
#15
Nicholas Tam, Devon R Coetzee, Safwaan Ahmed, Robert P Lamberts, Yumna Albertus-Kajee, Ross Tucker
INTRODUCTION: Many factors may contribute to running-related injury. These include fatigue and footwear, the combination of which has rarely been studied, in particular with reference to barefoot running, recently advocated as a method to reduce injury risk. METHODS: Twenty-two runners (12 well-trained and 10 trained) participated in a 10 km fatiguing trial. Knee and ankle joint kinematics and kinetics and electromyography were assessed during overground running in the barefoot and shod condition...
August 18, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28808276/growing-up-habitually-barefoot-influences-the-development-of-foot-and-arch-morphology-in-children-and-adolescents
#16
Karsten Hollander, Johanna Elsabe de Villiers, Susanne Sehner, Karl Wegscheider, Klaus-Michael Braumann, Ranel Venter, Astrid Zech
The development of the human foot is crucial for motor learning in children and adolescents as it ensures the basic requirements for bipedal locomotion and stable standing. Although there is an ongoing debate of the advantages and disadvantages of early and permanent footwear use, the influence of regular barefootness on foot characteristics in different stages of child development has not been extensively evaluated. A multicenter epidemiological study was conducted to compare the foot morphology between habitually barefoot children and adolescents (N = 810) to age-, sex- and ethnicity-matched counterparts that are used to wearing shoes...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28806710/foot-strike-pattern-in-children-during-shod-unshod-running
#17
Pedro Ángel Latorre Román, Fernando Redondo Balboa, Felipe García Pinillos
The purpose of this study was to determine the foot strike patterns (FSPs) and neutral support (no INV/EVE and no foot rotation) in children, as well as to determine the influence of shod/unshod conditions and sex. A total of 713 children, aged 6 to 16 years, participated in this study (Age=10.28±2.71years, body mass index [BMI]=19.70±3.91kg/m(2), 302 girls and 411 boys). A sagittal and frontal-plane video (240Hz) was recorded using a high-speed camcorder, to record the following variables: rearfoot strike (RFS), midfoot strike (MFS), forefoot strike (FFS), inversion/eversion (INV/EVE) and foot rotation on initial contact...
August 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28800714/sagittal-subtalar-and-talocrural-joint-assessment-during-ambulation-with-controlled-ankle-movement-cam-boots
#18
Benjamin D McHenry, Emily L Exten, Janelle A Cross, Karen M Kruger, Brian Law, Jessica M Fritz, Gerald Harris
BACKGROUND: The purpose of the current study was to determine sagittal plane talocrural and subtalar kinematic differences between barefoot and controlled ankle movement (CAM) boot walking. This study used fluoroscopic images to determine talar motion relative to tibia and calcaneal motion relative to talus. METHODS: Fourteen male subjects (mean age 24.1 ± 3.5 years) screened for normal gait were tested. A fluoroscopy unit was used to collect images at 200 Hz during stance...
August 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28768339/habitual-minimalist-shod-running-biomechanics-and-the-acute-response-to-running-barefoot
#19
Nicholas Tam, Ian A J Darragh, Nikhil V Divekar, Robert P Lamberts
The aim of the study was to determine whether habitual minimalist shoe runners present with purported favorable running biomechanithat reduce running injury risk such as initial loading rate. Eighteen minimalist and 16 traditionally cushioned shod runners were assessed when running both in their preferred training shoe and barefoot. Ankle and knee joint kinetics and kinematics, initial rate of loading, and footstrike angle were measured. Sagittal ankle and knee joint stiffness were also calculated. Results of a two-factor ANOVA presented no group difference in initial rate of loading when participants were running either shod or barefoot; however, initial loading rate increased for both groups when running barefoot (p=0...
September 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28763713/spatiotemporal-and-plantar-pressure-patterns-of-1000-healthy-individuals-aged-3-101-years
#20
Marnee J McKay, Jennifer N Baldwin, Paulo Ferreira, Milena Simic, Natalie Vanicek, Elizabeth Wojciechowski, Anita Mudge, Joshua Burns
OBJECTIVE: The purpose of this study was to establish normative reference values for spatiotemporal and plantar pressure parameters, and to investigate the influence of demographic, anthropometric and physical characteristics. METHODS: In 1000 healthy males and females aged 3-101 years, spatiotemporal and plantar pressure data were collected barefoot with the Zeno™ walkway and Emed(®) platform. Correlograms were developed to visualise the relationships between widely reported spatiotemporal and pressure variables with demographic (age, gender), anthropometric (height, mass, waist circumference) and physical characteristics (ankle strength, ankle range of motion, vibration perception) in children aged 3-9 years, adolescents aged 10-19 years, adults aged 20-59 years and older adults aged over 60 years...
July 18, 2017: Gait & Posture
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