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de Castro Marcelo P MP Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Rua Dr. Plácido Costa 91, 4200 450 Porto, Portugal ; Department of Physiotherapy, Activity and Human Movement Study Centre, School of Allied Health Science, Polytechnic Institute of Porto, Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal ; Porto Biomechanics Laboratory, University of Porto, Rua Dr. Plácido Costa 91, 4200 450 Porto, - - 2014
WalkinSense is a new device designed to monitor walking. The aim of this study was to measure the accuracy and repeatability of the gait analysis performed by the WalkinSense system. Descriptions of values recorded by WalkinSense depicting typical gait in adults are also presented. A bench experiment using the Trublu ...
Chang Hsun-Wen HW Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Physical Therapy, Fooyin University, Kaohsiung, - - 2014
The purpose of this study was to examine the correlation between the foot arch volume measured from static positions and the plantar pressure distribution during walking. A total of 27 children, two to six years of age, were included in this study. Measurements of static foot posture were obtained, including ...
van der Zwaard Babette C BC EMGO + Institute for health and care research, department of general practice and elderly care medicine, VU University Medical Centre, Postbus 7057, 1007 MB Amsterdam, The Netherlands. - - 2014
Several footwear design characteristics are known to have detrimental effects on the foot. However, one characteristic that has received relatively little attention is the point where the sole flexes in the sagittal plane. Several footwear assessment forms assume that this should ideally be located directly under the metarsophalangeal joints (MTPJs), ...
Lee Pei Y - - 2014
Plantar forefoot pain is commonly experienced by older people and it is often treated with forefoot pads to offload the painful area. However, studies have found inconsistent effects for different forefoot pads on plantar pressure reduction, and optimum forefoot pad placement is still not clear. The aim of this study ...
Spooner Jacob - - 2013
Both experiment and first principles calculations unequivocally indicate that properties of elements and their compounds undergo a tremendous transformation at ultra-high pressures exceeding 1 Mbar due to the fact that the difference between intra- and intermolecular interactions disappears under such conditions. Yet, even at much milder pressures of 50-300 kbar, ...
Zhang Xianyi X Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Chengdu, PR - - 2013
The aim of this study was to investigate how the height and material of in-shoe heel lifts affect plantar pressure and center of pressure (COP) trajectory in the medial-lateral direction during walking. Seventeen healthy young male adults were asked to walk along an 8m walkway while wearing a high-cut flat ...
Han Jin-Tae JT Department of Physical Therapy, College of Science, Kyungsung University, Busan, - - 2013
The purpose of this study is to compare the plantar foot pressure and the center of pressure (COP) pathway of normal and flat feet while crossing an obstacle at different heights. Nineteen subjects (10 normal feet, 9 flat feet) participated in this study. The plantar foot surface was divided into ...
Sobhani Sobhan S University of Groningen, University Medical Center Groningen, Department of Rehabilitation Medicine, Groningen, The Netherlands. Electronic address: - - 2013
Rocker profile shoes (rocker shoes) are one of the treatment options of metatarsalgia and forefoot stress fractures. The efficacy of rocker shoes in unloading the forefoot pressure has been shown in walking. In running, however, the effect of rocker shoes on forefoot pressure is unknown. Eighteen healthy female runners participated ...
Angın Salih - - 2013
This study aims to assess whether the plantar pressure, the foot posture index (FPI) and foot size can predict the postural sway velocity in terms of postural stability in unilateral stance. A total of 236 feet of 118 participants (62 males, 56 females; mean age 22.1±3.1 years; range 18 to ...
Fang F F Department of Endocrine and Metabolism, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China. pyongde@yeah.net - - 2013
To investigate the diagnostic significance of foot plantar pressure distribution abnormalities in patients with diabetic peripheral neuropathy (DPN). A total of 107 patients were divided into normal control (28 participants, 56 feet), non-DPN (56 patients, 112 feet), and DPN groups (23 patients, 46 feet). Foot plantar pressure was measured while ...
Chen Yanxi Y Department of Orthopedic Trauma, East Hospital, Tongji University School of Medicine, 150 Jimo Rd, 200120 Shanghai, China. Electronic address: - - 2013
Currently, the optimal treatment of flatfoot remains inconclusive. Our objectives were to understand the effect of different arthrodeses on maintenance of foot arch and provide experimental basis for rational selection in treatment of flatfoot. Sixteen fresh-frozen cadaver feet amputated above the ankle along with a section of leg were studied ...
Podichetty Jagdeep T - - 2013
In this study, we tested the possibility of calculating permeability of porous scaffolds utilized in soft tissue engineering using pore size and shape. We validated the results using experimental measured pressure drop and simulations with the inclusion of structural deformation. We prepared Polycaprolactone (PCL) and Chitosan-Gelatin (CG) scaffolds by salt ...
Trask Darrin J - - 2013
Symptom relief of recalcitrant metatarsalgia can be achieved through surgical shortening of the affected metatarsal, thus decreasing plantar pressure. Theoretically an oblique metatarsal osteotomy can be oriented distal to proximal (DP) or proximal to distal (PD). We characterized the relationship between the amount of second metatarsal shortening, osteotomy plane, and ...
Carl Hans-Dieter - - 2013
The present study measured the difference in peak plantar pressure between running shoes and soccer shoes in male soccer professionals [mean (SD): age, 23 (4) years; height, 184 (7) cm; weight, 81 (6) kg]. Case series. Institutional study. A total of 19 elite male soccer professionals [mean (SD): age, 23 ...
Oosterlinck M M Department of Surgery and Anaesthesiology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, - - 2013
Thus far, pressure-plate analysis has been limited to measurements on a hard surface, whereas equine athletes routinely perform on a deformable substrate. To explore pressure-plate analysis on arena footing. Nonrandomised crossover study using noninvasive techniques. Five sound, unshod ponies were walked and trotted over a pressure plate in 2 different ...
Yoneda J - - 2013
In this study, a newly developed innovative triaxial testing system to investigate strength, deformation behavior, and∕or permeability of gas hydrate bearing-sediments in deep sea is described. Transport of the pressure core from the storage chamber to the interior of the sealing sleeve of a triaxial cell without depressurization was achieved. ...
Potzel Oliver - - 2013
In this work we theoretically investigated the characteristics of the structure of biphenyl at zero temperature. The calculations were carried out with density functional theory using periodic boundary conditions. Semiempirical van der Waals (vdW) corrections were applied. We focused on the phenyl-phenyl dihedral angle and its shift with increasing pressure. ...
Fernández-Seguín Lourdes M - - 2013
In pes cavus, the medial longitudinal arch elevation reduces the contact surface area and consequently increases the corresponding plantar pressure measurements. This poor distribution of loads may produce associated pathology and pain in this or other areas of the body. Normal reference values need to be established in order to ...
Park Sun-Young - - 2013
In this paper we investigate computationally the transient dynamics of an elastic capsule flowing in a square microchannel with a rectangular constriction, and compare it with that of a droplet. The confinement and expansion dynamics of the fluid flow results in a rich deformation behavior for the capsule, from an ...
Otsuki Takeshi T Faculty of Sport and Health Sciences, Ryutsu Keizai University, 120 Ryugasaki, Ibaraki 301-8555, - - 2013
Chlorella, a unicellular green alga, contains various antioxidants and other nutrients such as amino acids and fiber. Previous studies have reported that supplementation with multiple antioxidants reduces arterial stiffness, a well-established cardiovascular risk factor. We investigated the effects of Chlorella intake on arterial stiffness using a single-blinded, placebo-controlled crossover study ...
Correia Fernando Faria - - 2013
To study the deformation response of three distinct contact lenses with known structures, which served as corneal models, under different chamber pressures using ultra-high-speed (UHS) Scheimpflug imaging. Three hydrophilic contact lenses were mounted on a sealed water chamber with precisely adjustable pressure: TAN-G5X (41% hydroxyethylmethacrylate/glycolmethacrylate, 550 µm thick), TAN-40 (62% ...
Ko Dong Yeol DY Department of Physical Therapy, Seoul hye Rehabilitation Clinic, Republic of - - 2013
[Purpose] This study aimed to determine the most appropriate height for shoe heels by measuring the displacement of the COP (center of pressure) and changes in the distribution of foot pressure after walking in flat (0.5 cm), middle-heeled (4 cm), and high-heeled (9 cm) shoes for 1 hour. [Methods] A ...
Madadi Hojjat - - 2013
Polydimethylsiloxane (PDMS) is one of the most common materials used for the flow delivery in the microfluidics chips, since it is clear, inert, non-toxic and non-flammable. Its inexpensiveness, straightforward fabrication and biological compatibility have made it a favorite material in the exploratory stages of the bio-microfluidic devices. If small footprint ...
Vaudreuil Nicholas J - - 2013
Posterior tibialis tendon (PTT) dysfunction (PTTD) is associated with adult acquired flatfoot deformity. PTTD is commonly treated with a flexor digitorum longus (FDL) tendon transfer (FDLTT) to the navicular (NAV), medial cuneiform (CUN), or distal residuum of the degraded PTT (rPTT). We assessed the kinetic and kinematic outcomes of these ...
Hudson David - - 2013
Elevated pressures on the plantar surface of the foot increases potential of developing foot ulcers in patients who are at risk. Walking with poles has been shown to reduce ground reaction and joint forces; however the effect on plantar pressures is unknown. The purpose of this study was to determine ...
Warne J P - - 2013
The purpose of this study is to compare changes in plantar pressure and force using conventional running shoes (CRS) and minimalist footwear (MFW) pre and post a 4-week MFW familiarization period. Ten female runners (age: 21 ± 2 years; stature: 165.8 ± 4.5 cm; mass: 55.9 ± 3.2 kg) completed two 11 km/h treadmill runs, 24 hours apart, in ...
Manner Virginia W - - 2013
Simple molecules such as HCOOH, or formic acid, are suggested to have played important roles in planetary physics due to their possibility for high pressure and temperature chemistry under impact conditions. In this study, we have investigated the effect of pressure (up to 50 GPa) on H-bonding and reactivity of ...
Mann Robert - - 2013
Running biomechanics has received increasing interest in recent literature on running-related injuries, calling for new, portable methods for large-scale measurements. Our aims were to define running strike pattern based on output of a new pressure-sensitive measurement device, the Runalyser, and to test its validity regarding temporal parameters describing running gait. ...
Scalpello Andrea - - 2013
In rheumatoid arthritis (RA) forefoot pathology is often related to increased peak plantar pressures under the metatarsal heads. This study sought to assess peak plantar pressures in newly diagnosed RA patients compared to non-rheumatic subjects. Plantar pressure in a group of 10 pain free RA patients diagnosed within two years ...
Chang Bao-Chi - - 2013
Foot pain frequently reduces physical activity and increases the risk of falls in older people. In current orthotic management of forefoot pain, metatarsal padding is the main strategy to reduce metatarsal pressure. However, pressure reductions are usually diverse and limited. The multi-step accommodative insole is fabricated by sequential foam padding ...
Qiu Xuan - - 2013
Abstract Background: Plantar pressure is a key factor for predicting ulceration in the foot of a diabetes patient. Subjects and Methods: We recruited a group of 100 Chinese patients with type 2 diabetes and an age-, sex-, weight-, and height-matched group of 100 Chinese subjects without diabetes. We obtained plantar ...
Lakio Satu - - 2013
In this research, the tableting properties of α-melibiose monohydrate were studied. Melibiose is a disaccharide which bears structural resemblance to lactose, because they both consist of galactose and glucose monosaccharide subunits. Compactibility and deformation behavior of two melibiose batches from different suppliers were studied and compared with α-lactose monohydrate and ...
Nunns Michael - - 2013
Barefoot running has increased in popularity over recent years, with suggested injury risk and performance benefits. However, despite many anecdotal descriptions of barefoot running styles, there is insufficient evidence regarding the specific characteristics of barefoot running. The present study provided reference data for four footstrike modalities adopted across a large ...
Choukou Mohamed-Amine - - 2013
Prescriptions for functional ankle instability are generally oriented to taping, which need to be validated as an efficient treatment. Therefore, the aim of this study was to investigate the effectiveness of ankle taping on the subject's foot pressure and gait pattern, including mediolateral analysis, according to tape application side. A ...
Igari K - - 2013
We performed indocyanine green angiography (ICGA) in patients with peripheral arterial disease (PAD), and established a method for the quantitative measurement of appropriate parameters to assess peripheral perfusion and the applicability of ICGA tests. Twenty-one patients with PAD underwent revascularization procedures with pre- and postinterventional ICGA tests. The ICGA parameters, ...
Lane Tamara J - - 2013
Plantar forefoot pain is common in older people and is related to increased peak pressures under the foot during gait. Variations in the hardness of the shoe sole may therefore influence both the magnitude of loading under the foot and the perceived comfort of the shoe in this population. The ...
Maurer Jessica D - - 2013
Midfoot break (MFB) is a foot deformity that can occur when ankle dorsiflexion is restricted due to muscle spasticity or contractures, causing abnormal increased motion through the midfoot. MFB has been previously described in terms of forefoot (FF) and hindfoot (HF) motion in the sagittal plane. The purpose of this ...
Melai Tom - - 2013
The aim of this study was to identify the cascade of effects leading from alterations in force generation around the ankle joint to increased plantar pressures under the forefoot. Gait analysis including plantar pressure measurement was performed at an individually preferred and a standardized, imposed gait velocity in diabetic subjects ...
Duerinck S - - 2013
This study presents a specific description of forefoot deformation during the stance phase of normal human walking based on the combined analysis of pressure and three-dimensional optoelectronic measurements. Forefoot deformation is measured in forty healthy subjects using (1) a six-camera motion capture system (sampled at 250Hz) tracking five reflective skin ...
Telfer Scott - - 2013
The ability to measure the functional behaviour of the plantar heel pad is clinically relevant in dystrophic or pathological heel conditions and may help to inform the design and development of interventions that attempt to restore normal function. In this study we present a novel technique which utilises orthotic heel ...
Høyer Christian - - 2013
To assess the diagnostic accuracy of laser Doppler flowmetry (LDF) with mercury-in-silastic strain gauge plethysmography (SGP) as a reference test for measuring the toe and ankle pressures in patients with known or suspected peripheral arterial disease (PAD). This was a prospective, randomized, blinded diagnostic accuracy study. Toe and ankle pressures ...
Schmid Timo - - 2013
A fixed cavovarus foot deformity can be associated with anteromedial ankle arthrosis due to elevated medial joint contact stresses. Supramalleolar valgus osteotomies (SMOT) and lateralizing calcaneal osteotomies (LCOT) are commonly used to treat symptoms by redistributing joint contact forces. In a cavovarus model, the effects of SMOT and LCOT on ...
Phethean Jill - - 2013
Quantifying morphological and functional development in children's feet, and thereby establishing development norms is difficult. In addition to practical challenges of experimentation on children, measurement equipment like plantar pressure (PP) platforms are almost exclusively geared towards adult-sized feet. These PP quantification problems may be exacerbated by typical regional data analysis ...
Verdon James P - - 2013
Geological storage of CO2 that has been captured at large, point source emitters represents a key potential method for reduction of anthropogenic greenhouse gas emissions. However, this technology will only be viable if it can be guaranteed that injected CO2 will remain trapped in the subsurface for thousands of years ...
Periyasamy R - - 2013
Abstract The aim of this study was to explore how foot type affects plantar pressure distribution during standing. In this study, 32 healthy subjects voluntarily participated and the subject feet were classified as: normal feet (n = 23), flat feet (n = 14) and high arch feet (n = 27) according to arch index (AI) values ...
Patry Jérôme - - 2013
Background: Clinical recommendations for the prevention and healing of diabetic foot ulcers (DFUs) are somewhat clear. However, assessment and quantification of the mechanical stress responsible for DFU remain complex. Different pressure variables have been described in the literature to better understand plantar tissue stress exposure. This article reviews the role ...
Hillstrom Howard J - - 2013
Background: In a previous pilot study of "cruisers" (nonindependent ambulation), "early walkers" (independent ambulation for 0-5 months), and "experienced walkers" (independent ambulation for 6-12 months), developmental age significantly affected the children's stability when walking and performing functional activities. We sought to examine how shoe structural characteristics affect plantar pressure distribution ...
Gomes Leonardo G - - 2013
The lack of perception in the hindfoot increases the plantar flexion, causing irregular posture due to the foot position, a disability known as equinus foot deformity. A portable device, named baropodometer, that measures the pressure at the forefoot and hindfoot regions was built to help this population in terms of ...
Amemiya Ayumi - - 2013
This cross-sectional observational study is to reveal what kind of gait feature is relevant to elevated segment and its plantar pressure for prevention of diabetic foot ulcers. In 57 diabetic patients, the relationship between elevated plantar pressure and gait features was analyzed. To conduct this investigation, a simultaneous measurement system ...
Oh Irvin I Department of Orthopaedic Surgery and Rehabilitation, University of Rochester School of Medicine and Dentistry, Rochester, NY 14620, - - 2013
Lateral column lengthening (LCL) of the calcaneus is commonly performed as part of correction of the adult acquired flatfoot deformity. Increases in postoperative lateral plantar pressure associated with pain in the lateral aspect of the foot have been reported. The aim of this study was to investigate changes in pressures ...
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