Time-frequency correlation analysis of surface EMG signals: Cross-energy localization during gait
Introduction: The purpose of this work is to assess the correlation in time-frequency domain, i.e. cross-energy density, of the surface EMG signal of ankle muscles usually involved in able-bodied walking. The cross-energy density has been identified by means of Continuous Wavelet Transform (CWT), a time-scale analysis method for multiresolution decomposition of continuous-time signals, providing a good localization in time-frequency domain [1]. (Source: Gait and Posture)
Source: Gait and Posture - October 1, 2018 Category: Orthopaedics Authors: A. Strazza, F. Verdini, A. Mengarelli, S. Cardarelli, S. Fioretti, F. Di Nardo Source Type: research
Editorial Board
(Source: Gait and Posture)
Source: Gait and Posture - October 1, 2018 Category: Orthopaedics Source Type: research
Bayesian classification of falls risk
Falls prevention efforts for older adults have become increasingly important and are now a significant health research effort. Unintentional falls are a leading cause of injury to those over 65 years of age and have significant societal and economic impacts Fabre et al. (2010). One of the current trends in health informatics is the use of machine learning to predict adverse outcomes Ravi et al. (2017), Andreu-Perez et al. (2015). Prior research has shown that machine learning can be used to analyze gait and classify older adults as a faller or non-faller, where a faller has a past history of falling Howcroft et al. (Source: Gait and Posture)
Source: Gait and Posture - October 1, 2018 Category: Orthopaedics Authors: Matthew Martinez, Phillip L. De Leon, David Keeley Source Type: research
Functional, Impulse-Based Quantification of Plantar Pressure Patterns in Typical Adult Gait
Foot deformities are a frequent cause of pain, fatigue, and dysfunction [1,2]. Diagnosis and management of such deformities can be complex, and over-treatment can lead to unnecessary costs for patients and the health care system [3,4]. In this light, plantar foot pressure measurements provide useful information about foot posture and deformities, facilitating better diagnosis of functional problems [1]. For example, elevated plantar foot pressure has been associated with foot deformities and, in turn, calluses, decreased plantar tissue thickness, and limited joint mobility [1]. (Source: Gait and Posture)
Source: Gait and Posture - October 1, 2018 Category: Orthopaedics Authors: A.H. Vette, M. Funabashi, J. Lewicke, B. Watkins, M. Prowse, G. Harding, A. Silveira, M. Saraswat, S. Dulai Tags: Full length article Source Type: research
The effect of cervical spine subtypes on center of pressure parameters in a large asymptomatic young adult population
Functional postural control is required to maintain and regulate a state of balanced equilibrium. Numerous complex coordinated neurological integrations are necessary to preserve the body ’s center of mass over either a static or dynamic base of support [1–3]. The excursion of the body’s center of mass relative to the base of support is the measurable criteria referred to as postural sway, representing the body’s small adjustments responsible for maintaining upright equilibri um. Force platform generated Center of Pressure (CoP) parameters are the gold standard when assessing postural control, with minimal excursio...
Source: Gait and Posture - October 1, 2018 Category: Orthopaedics Authors: Lee Daffin, Max C Stuelcken, Mark G L Sayers Tags: Full length article Source Type: research
Prediction of mild anatomical leg length discrepancy based on gait kinematics and linear regression model
Leg length discrepancy (LLD) is present in 4% to 90% of the population in the world depending on the criterion of clinical significance adopted by researchers [1,2]. It can be classified as anatomical (ALLD), when the difference between limbs can be directly measured on tibias, femurs or both, or functional discrepancies (FLLD), identified on postural analysis such as an excessive pelvic obliquity, excessive knee flexion or excessive ankle eversion on a standing position [3]. Both ALLD and FLLD have been related to different pathologies, such as knee and hip osteoarthritis, due to an inadequate distribution of mechanical l...
Source: Gait and Posture - September 28, 2018 Category: Orthopaedics Authors: Gabriel Zeitoune, Jurandir Nadal, Luiz Alberto Batista, Leonardo Metsavaht, Anna Paula Moraes, Gustavo Leporace Tags: Full length article Source Type: research
Introduction to special editorial on statistical guidance for a successful research paper
Guidelines to prepare the perfect scientific article are difficult, if not impossible, to write, especially for a multidisciplinary journal like Gait and Posture where you can find many different types of studies ranging from basic research to specialized clinical applications. One common challenge of good scientific work is choosing appropriate statistical methods and describing these methods in sufficient detail. (Source: Gait and Posture)
Source: Gait and Posture - September 27, 2018 Category: Orthopaedics Authors: Thomas Dreher, Tishya Wren Source Type: research
Introduction to the statistical guidance for a successful research paper
Guidelines to prepare the perfect scientific article are difficult, if not impossible, to write, especially for a multidisciplinary journal like Gait and Posture where you can find many different types of studies ranging from basic research to specialized clinical applications. One common challenge of good scientific work is choosing appropriate statistical methods and describing these methods in sufficient detail. (Source: Gait and Posture)
Source: Gait and Posture - September 27, 2018 Category: Orthopaedics Authors: Thomas Dreher, Tishya Wren Source Type: research
impact of orthognathic surgery on the body posture
Postural control is usually described as being based on information from the vestibular, visual, and proprioceptive systems [1 –3]. In the past few decades, the specific role of the cranio-mandibular system has been highlighted by numerous studies, most of them involving dental proprioception. Nevertheless, mandibular position is controlled by three types of proprioception: masticatory muscle proprioception, mainly by the masseter muscle; joint proprioception, from the temporomandibular joint; and dental proprioception, by the periodontal ligament [4]. (Source: Gait and Posture)
Source: Gait and Posture - September 21, 2018 Category: Orthopaedics Authors: M. Paya-Argoud, C. Tardieu, F. Cheynet, A. Raskin, L. Borel Tags: Full length article Source Type: research
The measurement of tibial acceleration in runners. A review of the factors that can affect tibial acceleration during running and evidence based guidelines for its use
Running is a popular activity, but the high participation rate is accompanied by a high incidence of injuries [1]. The majority of running-related injuries occur in the lower limbs, are chronic in nature, and are related to cumulative loading [2]. The repetitive impacts associated with running is thought to play an important role in the pathophysiology of many common running injuries, especially bony fatigue fractures (commonly termed stress fractures) [3 –5]. In runners, between 35% and 49% of all fatigue fractures occur in the tibia [6–9]. (Source: Gait and Posture)
Source: Gait and Posture - September 14, 2018 Category: Orthopaedics Authors: Kelly R. Sheerin, Duncan Reid, Thor F. Besier Source Type: research
Children with Autism Spectrum Disorder, Developmental Coordination Disorder, and typical development differ in characteristics of dynamic postural control: a preliminary study
Autism Spectrum Disorder (ASD) and Developmental Coordination Disorder (DCD) share similar behavioral and motor symptoms, but are not commonly studied together [1]. Children with ASD and DCD have poor postural control compared to TD children [2,3], and are at higher fall and injury risk [4,5]. Postural control depends on visuomotor integration –the use of visual information to guide motor action [6,7]. Here, we examined differences in dynamic postural control in children with ASD and DCD. We used a novel task [8] that requires online use of visual feedback to support dynamic postural control. (Source: Gait and Posture)
Source: Gait and Posture - September 14, 2018 Category: Orthopaedics Authors: Haylie L. Miller, Priscila Ca çola, Gabriela Sherrod, Rita M. Patterson, Nicoleta L. Bugnariu Tags: Short communication Source Type: research
The Effects of Habitual Foot Strike Patterns on Achilles Tendon Loading in Female Runners
Running continues to be a popular mode of physical activity and appears to have physical and psychological benefits [1,2]. Unfortunately, the incidence of running-related injury is high. Achilles tendinopathy is one of the most common conditions reported by runners, accounting for approximately 10% of all running injuries [3]. (Source: Gait and Posture)
Source: Gait and Posture - September 12, 2018 Category: Orthopaedics Authors: Thomas W. Kernozek, Allie Knaus, Tess Rademaker, Thomas G. Almonroeder Tags: Full length article Source Type: research
Cognitive function impacts gait, functional mobility and falls in Fragile X-Associated Tremor/Ataxia Syndrome
Fragile X-associated tremor/ataxia syndrome (FXTAS) is a progressive neurodegenerative disease that affects a significant number of carriers of a ‘premutation’ size (55-200) CGG repeat expansion in the 5’ untranslated region of the fragile X mental retardation 1 (FMR1) gene on the X chromosome [1]. FXTAS patients may present with a combination of clinical symptoms including cerebellar gait ataxia, balance problems, tremor, parkinsonism, peripheral neuropathy and cognitive deficits. FMR1 premutation carrier (PMC) men are more frequently and severely affected with FXTAS than PMC women due to the protective presence of ...
Source: Gait and Posture - September 12, 2018 Category: Orthopaedics Authors: Joan A. O ’Keefe, Erin E. Robertson, Bichun Ouyang, Danielle Carnes, Andrew McAsey, Yuanqing Liu, Maija Swanson, Bryan Bernard, Elizabeth Berry-Kravis, Deborah A. Hall Tags: Full length article Source Type: research
Transitioning from the level surface to stairs in children with and without Down syndrome: Motor strategy and anticipatory locomotor adjustments
Down syndrome (DS) is the most common genetic condition which affects about 1 out of 700 newborn infants [1]. Individuals with DS are characterized by muscle hypotonia, ligament laxity, hip and knee joint instability, poor postural control, and altered movement patterns [2,3]. Children with DS show delayed development of motor skills; for example, they usually start walking at two years of age, which is one year later than children with typical development (TD) [2,4]. Individuals with DS often walk slower with shorter but wider steps and greater foot progression angles [2,5] and show a reduced range-of-motion of the hip, k...
Source: Gait and Posture - September 12, 2018 Category: Orthopaedics Authors: Huaqing Liang, Xiang Ke, Jianhua Wu Tags: Full length article Source Type: research
P 068 – Plantar pressure distribution during running in early childhood
Plantar loads represent a reliable estimation of the mechanical efficiency of movement. Important studies on plantar loads were conducted in children in different age groups in the quiet standing position and walking [1]. The longitudinal arch seems develop continuously until 6 years of age. Phethean et al. [2], suggest that between the ages of 4 and 7 years old there may have a period of potential differences between bearing of the plantar loads. Running is an important motor ability for children and an understanding of plantar pressure loads during running in early childhood may be important to assess typical motor devel...
Source: Gait and Posture - September 11, 2018 Category: Orthopaedics Authors: A. De David, T. Vieira, P. Mesquita, S. Neri, R. Moreno Source Type: research
