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Jules Gellaerts, Evgeny Bogdanov, Farzin Dadashi, Benoit Mariani
Ski Mountaineering (SkiMo) is a fast growing sport requiring both endurance and technical skills. It involves different types of locomotion with and without the skis. The aim of this study is to develop and validate in the snowfield a novel inertial-based system for analysing cycle parameters and classifying movement in SkiMo in real-time. The study was divided into two parts, one focused on real-time parameters estimation (cadence, distance from strides, stride duration, stride length, number of strides, slope gradient, and power) and, second, on transition detection (kickturns, skin on, skin off, ski on and off backpack) in order to classify between the different types of locomotion...
March 16, 2018: Sensors
Mayumi Matsuda, Yuki Mataki, Hirotaka Mutsuzaki, Kenichi Yoshikawa, Kazushi Takahashi, Keiko Enomoto, Kumiko Sano, Masafumi Mizukami, Kazuhide Tomita, Haruka Ohguro, Nobuaki Iwasaki
[Purpose] Robot-assisted gait training (RAGT) using Hybrid Assistive Limb (HAL, CYBERDYNE) was previously reported beneficial for stroke and spinal cord injury patients. Here, we investigate the immediate effect of a single session of RAGT using HAL on gait function for cerebral palsy (CP) patients. [Subjects and Methods] Twelve patients (average age: 16.2 ± 7.3 years) with CP received a single session of RAGT using HAL. Gait speed, step length, cadence, single-leg support per gait cycle, hip and knee joint angle in stance, and swing phase per gait cycle were assessed before, during, and immediately after HAL intervention...
February 2018: Journal of Physical Therapy Science
Harsh H Buddhadev, Daniel L Crisafulli, David N Suprak, Jun G San Juan
Cycling is commonly prescribed for physical rehabilitation of individuals with knee osteoarthritis (OA). Despite the known therapeutic benefits, no research has examined interlimb symmetry of power output during cycling in these individuals. We investigated the effects of external workload and cadence on interlimb symmetry of crank power output in individuals with knee OA versus healthy controls. Twelve older participants with knee OA and 12 healthy sex- and age-matched controls were recruited. Participants performed 2-minute bouts of stationary cycling at four workload-cadence conditions (75 W-60 rpm, 75 W-90 rpm, 100 W-60 rpm, and 100 W-90 rpm)...
March 15, 2018: Journal of Applied Biomechanics
Saskia Koene, Niki M Stolwijk, Rob Ramakers, Maaike de Vries, Lonneke de Boer, Mirian C H Janssen, Imelda de Groot, Jan Smeitink
Mitochondrial disorders are multisystem conditions that can potentially affect gait in many ways. The aim of this study was to select the optimal protocol to quantify the spatiotemporal parameters of gait in ambulatory children with mitochondrial disorders based on feasibility, test-retest reliability, and the difference between patients and controls. Gait at self-selected pace was quantified in ambulatory children with a genetically confirmed primary mitochondrial disease using the GAITRite electronic walkway...
March 12, 2018: Journal of Inherited Metabolic Disease
Maryam Maleki, Samaneh Badri, Hamed Shayestehepour, Mokhtar Arazpour, Farzam Farahmand, Mohamad Ebrahim Mousavi, Ehsan Abdolahi, Hasan Farkhondeh, John S Head, Navid Golchin, Mohammad Ali Mardani
BACKGROUND: The aim of this study was to assess the performance of an original powered foot clearance creator (PFCC) mechanism worn in conjunction with an isocentric reciprocal gait orthosis (IRGO) and evaluate its effect on trunk compensatory movements and spatiotemporal parameters in nine healthy subjects. METHOD: A PFCC motorized mechanism was designed that incorporated twin sole plates, the movements of which enabled increased toe to floor clearance during swing phase...
March 12, 2018: Disability and Rehabilitation. Assistive Technology
Heiliane de Brito Fontana, Caroline Ruschel, Elisa Dell'Antonio, Alessandro Haupenthal, Gustavo Soares Pereira, Helio Roesler
PURPOSE: The aim of this study was to analyze the effect of cadence, immersion level as well as body density on the vertical component (Fymax ) of ground reaction force (GRF) during stationary running (SR). METHODS: In a controlled, laboratory study, thirty-two subjects ran at a wide range of cadences (85-210 steps/min) in water, immersed to the hip and to the chest, and on dry land. Fymax. was verified by a waterproof force measurement system and predicted based on a statistical model including cadence, immersion ratio and body density...
March 9, 2018: Human Movement Science
Lars Bischoff, Christian Babisch, Jürgen Babisch, Frank Layher, Klaus Sander, Georg Matziolis, Stefan Pietsch, Eric Röhner
INTRODUCTION: The use of Kinesio tape (KT) to improve proprioception is a matter of considerable debate. In comparison, the rupture of the anterior cruciate ligament is a sufficiently well-investigated injury with a proven compromise of proprioception. The objective of the present study was to assess a supportive effect on proprioception after KT application, taking the anterior cruciate ligament (ACL) rupture as an example. MATERIALS AND METHODS: Forty-eight patients who had suffered an ACL rupture, confirmed clinically and by magnetic resonance imaging, and who were treated conservatively or were awaiting surgery were included in this study...
March 10, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Toshiki Tajima, Hiroshige Tateuchi, Yumiko Koyama, Tome Ikezoe, Noriaki Ichihashi
Reducing external joint moments during gait can lead to a reduction in dynamic joint load. There has yet to be a detailed investigation of gait strategies that can reduce external joint moments by decreasing the magnitude of ground reaction force (GRF) without reducing the walking speed. The objectives of this study were to verify whether it is possible to reduce external joint moments by decreasing the GRF magnitude without reducing the walking speed and to identify the alternative walking strategy involved in young healthy adults...
March 7, 2018: Human Movement Science
Irene Pulido-Valdeolivas, David Gómez-Andrés, Juan Andrés Martín-Gonzalo, Irene Rodríguez-Andonaegui, Javier López-López, Samuel Ignacio Pascual-Pascual, Estrella Rausell
The Hereditary Spastic Paraplegias (HSP) are a group of heterogeneous disorders with a wide spectrum of underlying neural pathology, and hence HSP patients express a variety of gait abnormalities. Classification of these phenotypes may help in monitoring disease progression and personalizing therapies. This is currently managed by measuring values of some kinematic and spatio-temporal parameters at certain moments during the gait cycle, either in the doctor´s surgery room or after very precise measurements produced by instrumental gait analysis (IGA)...
2018: PloS One
Mathew Hill, Christopher Talbot, Michael Puddiford, Michael Price
PURPOSE: This study compared cardiorespiratory and perceptual responses to exercise using self-regulated and imposed power outputs distributed between the arms and legs. METHODS: Ten males (age 21.7 ± 3.4 years) initially undertook incremental arm-crank ergometry (ACE) and cycle ergometry (CYC) tests to volitional exhaustion to determine peak power output (Wpeak ). Two subsequent tests involved 20-min combined arm-leg ergometry (ALE) trials, using imposed and self-regulated protocols, both of which aimed to elicit an exercising heart rate of 160 beats min-1 ...
March 6, 2018: European Journal of Applied Physiology
James Steele, Andrew Butler, Zoe Comerford, Jason Dyer, Nathan Lloyd, Joshua Ward, James Fisher, Paulo Gentil, Christopher Scott, Hayao Ozaki
The present study examined the effects of exercise utilising traditional resistance training (leg press) or 'cardio' exercise (recumbent cycle ergometry) modalities upon acute physiological responses. Nine healthy males underwent a within session randomised crossover design where they completed both the leg press and recumbent cycle ergometer conditions. Conditions were approximately matched for effort and duration (leg press: 4 × 12RM using a 2 s concentric and 3 s eccentric repetition duration controlled with a metronome, thus each set lasted  60 s; recumbent cycle ergometer: 4 × 60 s bouts using a resistance level permitting 80-100 rpm but culminating with being unable to sustain the minimum cadence for the final 5-10 s)...
2018: PeerJ
Giancarlo Coghe, Giuseppina Pilloni, Erica Zucca, Micaela Porta, Federica Corona, Jessica Frau, Giuseppe Fenu, Lorena Lorefice, Maria Giovanna Marrosu, Massimiliano Pau, Eleonora Cocco
BACKGROUND: The dual task paradigm (the simultaneous performance of motor and cognitive task) is used in a laboratory setting to evaluate walking impairments that affect patients' daily lives. Although promising, it is poorly standardized and neither the cognitive task nor the motor task have been validated in a matched healthy control group (HC) for multiple sclerosis (MS). OBJECTIVE: Our aim was to set up a standardized instrument to evaluate cognitive motor interference in MS using the interference test par excellence: the stroop colour word test (SCWT)...
February 24, 2018: Multiple Sclerosis and related Disorders
Arif Reza Anwary, Hongnian Yu, Michael Vassallo
This paper aims to assess the use of Inertial Measurement Unit (IMU) sensors to identify gait asymmetry by extracting automatic gait features. We design and develop an android app to collect real time synchronous IMU data from legs. The results from our method are validated using a Qualisys Motion Capture System. The data are collected from 10 young and 10 older subjects. Each performed a trial in a straight corridor comprising 15 strides of normal walking, a turn around and another 15 strides. We analyse the data for total distance, total time, total velocity, stride, step, cadence, step ratio, stance, and swing...
February 24, 2018: Sensors
Bård Bogen, Rolf Moe-Nilssen, Anette Hylen Ranhoff, Mona Kristin Aaslund
BACKGROUND: The step length-cadence ratio, also called the walk ratio (WR; cm/steps/min) is a measure of cautious gait, poor balance control or impaired gait, but has not been investigated for both genders in a general population of older adults across different speeds and conditions. METHOD: The participants were community-dwelling volunteers between 70 and 81 years. They walked 6.5 m under four different conditions: At preferred speed, fast speed, during a dual task condition and on an uneven surface...
February 21, 2018: Gait & Posture
Catrine Tudor-Locke, John M Schuna, Ho Han, Elroy J Aguiar, Sandra Larrivee, Daniel S Hsia, Scott W Ducharme, Tiago V Barreira, William D Johnson
BACKGROUND: Steps/day is widely utilized to estimate the total volume of ambulatory activity, but it does not directly reflect intensity, a central tenet of public health guidelines. Cadence (steps/min) represents an overlooked opportunity to describe the intensity of ambulatory activity. We sought to establish thresholds linking directly observed cadence with objectively measured intensity in 6-20 year olds. METHODS: One hundred twenty participants completed multiple 5-min bouts on a treadmill, from 13...
February 26, 2018: International Journal of Behavioral Nutrition and Physical Activity
Soran AminiAghdam, Reinhard Blickhan
BACKGROUND: Although alteration in trunk orientation and ground level potentially affects gait pattern individually, it is plausible to examine the interaction effects of such factors. OBJECTIVE: The interaction effects between trunk-flexed gait and uneven ground on able-bodied gait pattern. METHODS: For twelve able-bodied participants, we compared the adaptive mechanisms in kinematics, kinetics and spatial-temporal parameters of gait (STPG) with bent postures (30° and 50° of sagittal trunk flexion) across uneven surface (10-cm visible drop at the sight of the second ground contact) with that of upright posture on even ground surface...
February 17, 2018: Gait & Posture
Ashli A Owen-Smith, Joseph Gerth, R Craig Sineath, Joshua Barzilay, Tracy A Becerra-Culqui, Darios Getahun, Shawn Giammattei, Enid Hunkeler, Timothy L Lash, Andrea Millman, Rebecca Nash, Virginia P Quinn, Brandi Robinson, Douglas Roblin, Travis Sanchez, Michael J Silverberg, Vin Tangpricha, Cadence Valentine, Savannah Winter, Cory Woodyatt, Yongjia Song, Michael Goodman
BACKGROUND: Transgender individuals sometimes seek gender confirmation treatments (GCT), including hormone therapy (HT) and/or surgical change of the chest and genitalia ("top" and "bottom" gender confirmation surgeries). These treatments may ameliorate distress resulting from the incongruence between one's physical appearance and gender identity. AIM: The aim was to examine the degree to which individuals' body-gender congruence, body image satisfaction, depression, and anxiety differed by GCT groups in cohorts of transmasculine (TM) and transfeminine (TF) individuals...
February 17, 2018: Journal of Sexual Medicine
Matteo Zago, Chiarella Sforza, Daniela Rita Bonardi, Enrico Eugenio Guffanti, Manuela Galli
BACKGROUND: Gait instability is a major fall-risk factor in patients with chronic obstructive pulmonary disease (COPD). Clinical gait analysis is a reliable tool to predict fall onsets. However, controversy still exists on gait impairments associated with COPD. RESEARCH QUESTION: Thus, the aims of this review were to evaluate the current understanding of spatiotemporal, kinematic and kinetic gait features in patients with COPD. METHODS: In line with PRISMA guidelines, a systematic literature search was performed throughout Web of Science, PubMed Medline, Scopus, PEDro and Scielo databases...
February 13, 2018: Gait & Posture
Susan W Hunter, Courtney Frengopoulos, Jeffrey Holmes, Ricardo Viana, Michael W C Payne
BACKGROUND: The improvement of gait and mobility are major rehabilitation goals following lower extremity amputations. However, when living in the community many daily activities require the multitasking of motor and cognitive tasks. The dual-task paradigm can be used to evaluate the concurrent performance of mobility and cognitive tasks. RESEARCH QUESTION: The purpose of this study was to evaluate the effects of dual-task gait testing in older adults with trans-tibial amputations...
February 13, 2018: Gait & Posture
Olajide Ayinla Olawale, Jibrin Sammani Usman, Kayode Israel Oke, Oladunni Caroline Osundiya
Objectives: Patients with stroke are faced with gait, balance, and fall difficulties which could impact on their community reintegration. In Nigeria, community reintegration after stroke has been understudied. The objective of this study was to evaluate the predictors of community reintegration in adult patients with stroke. Materials and Methods: Participants were 91 adult patients with stroke. Gait variables, balance self-efficacy, community balance/mobility, and fall self-efficacy were assessed using Rivermead Mobility Index, Activities-specific Balance Confidence Scale, Community Balance and Mobility Scale, and Falls Efficacy Scale-International respectively...
January 2018: Journal of Neurosciences in Rural Practice
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