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Li Zhijun - - 2014
This paper investigates optimal feet forces' distribution and control of quadruped robots under external disturbance forces. First, we formulate a constrained dynamics of quadruped robots and derive a reduced-order dynamical model of motion/force. Consider an external wrench on quadruped robots; the distribution of required forces and moments on the supporting ...
Masumoto Junya J The Joint Graduate School in Science of School Education, Hyogo University of Teacher Education, Kato, - - 2014
The present study examined the development of a leader-follower relationship in joint action performed by participants with different skill levels. Two participants were instructed to produce discrete isometric forces such that the sum of the forces was the target force. The task did not prescribe the onset time or share ...
Ross James R JR Sports Medicine and Shoulder Service, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan, USA Broward Orthopedic Specialists, Fort Lauderdale, Florida, USA - - 2014
The current understanding of the effect of dynamic changes in pelvic tilt on the functional acetabular orientation and occurrence of femoroacetabular impingement (FAI) is limited. To determine the effect of changes in pelvic tilt on (1) terminal hip range of motion and (2) measurements of acetabular version as assessed on ...
Muyor José M JM Faculty of Education Sciences, Nursing and Physiotherapy. Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab), University of Almería, - - 2014
Systematic repetition or prolonged posture in specific postures adopted during training could generate modifications on the sagittal spinal curvatures. Spinal alteration in its physiologic curvatures in the sagittal plane has been associated with predisposition to spinal disorders. The objective was to evaluate and compare the changes produced on the sagittal ...
Robinson Mark A - - 2014
Upper limb motor control in fast, goal-directed aiming is altered in tetraplegics following posterior-deltoid musculotendinous transfer. Specifically, movements have similar end-point accuracy but longer duration and lower peak velocity than those of age-matched, neurotypical controls. Here, we examine in detail the interplay between primary movement and submovement phases in five ...
Jiménez-Reyes Pedro P Faculty of Physical Sciences and Sport, Catholic University of San Antonio, Murcia, Spain, - - 2014
To study the effect of a countermovement on the lower limb force-velocity (F-v) mechanical profile and to experimentally test the influence of F-v mechanical profile on countermovement jump (CMJ) performance, independently from the effect of maximal power output (P max). Fifty-four high-level sprinters and jumpers performed vertical maximal CMJ and ...
Barbosa Tiago M TM Polytechnic Institute of Braganca, Braganca, - - 2014
The assessment of energetic and mechanical parameters in swimming often requires the use of an intermittent incremental protocol, whose step lengths are corner stones for the efficiency of the evaluation procedures. The aim of this research was to analyse the existence of changes in swimming kinematics and inter-limb coordination behavior ...
Kurokawa Yoshitaka Y *Department of Orthopedic Surgery, Osaka Medical College, Japan †Olympus Terumo Biomaterials Corp., Japan ‡Department of Orthopedics, Warren Alpert Medical School of Brown University and Rhode Island Hospital, Providence, Rhode Island, - - 2014
Study Design. A cadaveric study.Objective. To determine whether the use of suture anchors is warranted in cervical laminoplasty.Summary of Background Data. The use of suture anchors to stabilize elevated laminae has been popularized in laminoplasty. However, the validity of using suture anchors in laminoplasty has not been determined.Methods. Six intact ...
Conte Daniele D 1Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Rome, Italy. 2Department of Biology, University of Portland, Portland, OR. 3Research center of motor sciences (SUISM), department of medical sciences, University of Turin, Turin, - - 2014
The aim of this study was to assess elite women's basketball game performance. Five elite women's games (3 Italian 1st division and 2 Euroleague) were analyzed for individual and team time-motion analyses. The individual analysis evaluated the players' movement patterns with particular focus on high intensity activity (HIA), sprint activity, ...
Simkins Matt M California State University, Chico, Chico, CA, USA, - - 2014
Among other diminished motor capabilities, survivors of a stroke often exhibit pathological joint synergies. With respect to the upper limbs, these deficits diminish coordination in reaching, pointing, and daily task performance. Past research on pathological synergies suggests that the synergistic relationship between joints is different for flexion than in extension. ...
Pletikapić G G Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb, - - 2014
Marine-gel biopolymers were recently visualized at the molecular level using atomic force microscopy (AFM) to reveal fine fibril-forming networks with low to high degrees of cross-linking. In this work, we use force spectroscopy to quantify the intra- and intermolecular forces within the marine-gel network. Combining force measurements, AFM imaging, and ...
Ganesan Mohan M Department of Physical Therapy, University of Illinois at Chicago, Chicago, - - 2014
The use of a footrest while performing activity in standing is frequently associated with improvement of a user's well-being however no information exists on the role of a footrest in improving postural stability. The aim of the study was to evaluate the effects of using a footrest in postural control. ...
Qu Xingda X College of Mechatronics and Control Engineering, Shenzhen University, 3668 Nanshan Avenue, Shenzhen, Guangdong Province 518060, China. Electronic address: - - 2014
The objective of this study was to examine the effects of different types of insoles on postural stability in older adults. Four types of commercially available insoles were selected including the cupped insoles, textured insoles, rigid insoles, and soft insoles. The experiment included a static stance session and a walking ...
Seo Yu-Jin YJ *Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University,**Department of Orthodontics, College of Dentistry, Kyung Hee University School of Dentistry - - 2014
Summary OBJECTIVE: To evaluate the effects of tooth displacement and vibration on frictional force and stick-slip phenomenon (SSP) when conventional brackets were used with a levelling/alignment wire. The samples consisted of six groups (n = 10 per group) with combinations of tooth displacement (2mm lingual displacement [LD], 2mm gingival displacement ...
Nairn Brian C BC School of Kinesiology & Health Science, Faculty of Health, York University, 4700 Keele Street, Toronto, ON M3J 1P3, - - 2014
Complex motion during standing is typical in daily living and requires movement of both the thoracic and lumbar spine; however, the effects of lumbar spine posture on thoracic spine motion patterns remain unclear. Thirteen males moved to six positions involving different lumbar (neutral and flexed) and thoracic (flexed and twisted) ...
Noh Byungjoo B a Department of Sports Medicine, Graduate School of Comprehensive Human Sciences , University of Tsukuba , Ibaraki , - - 2014
Abstract The purpose of this study was to compare angular change and translational motion from the medial longitudinal arch (MLA) and lateral longitudinal arch (LLA) during running between medial tibial stress syndrome (MTSS) and non-MTSS subjects. A total of 10 subjects volunteered, comprising 5 subjects with MTSS and 5 subjects ...
Iwasaki Junichi J Department of Applied Physics, The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, - - 2014
We study by the micromagnetic simulations the skyrmion motion along the edge driven by the current transverse to it. We found that (i) the velocity is enhanced by the factor of ∼1/α (α: the Gilbert damping) with the maximum value determined only by the confining force from the edge, (ii) ...
Saito Marie M Graduate student, Complete Denture Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, - - 2014
Attachment wear can decrease the retentive force of 2-implant overdentures (2-IODs). The purpose of this in vitro study was to investigate the trend of change in retentive force for 6 different bar attachments during dislodgement. Round and Dolder bars were made of platinum-added gold alloy (PGA), cobalt chromium alloy (Co-Cr), and ...
Shu Min-Tsan MT The Department of Otolaryngology, Hearing and Speech Center, Mackay Memorial Hospital, 92 Chung-Shan North Road, Sec. 2, Taipei City 10499, - - 2014
The aim of this study was to investigate the acoustic characteristics of target vowels phonated in normal voice persons while performing laryngeal telescopy. The acoustic characteristics are compared to show the extent of possible difference to speculate their impact on phonation function. Thirty-four male subjects aged 20-39 years with normal ...
Zech Astrid A a Institute of Human Movement Science , University of Hamburg , Hamburg , - - 2014
Abstract In recreational sports, uncushioned, light-weight and minimalist shoes are increasingly used to imitate barefoot situations. Uncertainty exists whether these shoes provide sufficient stability during challenging movements. In this randomised crossover study, 35 healthy distance runners performed jump landing stabilisation and single-leg stance tests on a force plate, using four ...
van der Graaff Marieke C W MC MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands, - - 2014
Trajectories of goal-directed movements are less curved for movements over a surface (constrained) than for movements in empty space (unconstrained). To study whether this difference arises from feeling the surface slip across the skin or having to control the movements in a third dimension, we manipulated the available tactile information ...
Anders Katrin K Philipps-University Marburg, - - 2014
Phytochromes are photoreceptors using a bilin tetrapyrrole as chromophore, which switch in canonical phytochromes between red (Pr) and far red light (Pfr) absorbing states. Cph2 from Synechocystis sp., a non-canonical phytochrome, harbors besides a cyanobacteriochrome domain a second photosensory module, a Pr/Pfr-interconverting GAF-GAF bidomain (SynCph2(1-2)). Like in canonical phytochromes, a ...
Schinkel-Ivy Alison A School of Kinesiology and Health Science, York University, Toronto, ON, - - 2014
Relationships have been shown between spinal motion and head and/or arm postures, yet there has been little standardization of the head and arm positions that elicit maximal voluntary spine angles during maximal trunk flexion, lateral bend, and axial twist. This study aimed to determine the head and arm positions that ...
Vallabhajosula Srikant S Department of Physical Therapy Education, Elon University, Elon, - - 2014
Tai Chi intervention has been shown to be beneficial for balance improvement. The current study examined the effectiveness of Tai Chi to improve the dynamic postural control among older adults with mobility disability. Six sedentary older adults with mobility disability participated in a 16-week Tai Chi intervention consisting of one ...
Izawa Jun J aNTT Communication Science Laboratories, Atsugi bNational Institute of Information and Communications Technology cATR Computational Neuroscience Laboratories, Kyoto, - - 2014
Motor memory is updated to generate ideal movements in a novel environment. When the environment changes every trial randomly, how does the brain incorporate this uncertainty into motor memory? To investigate how the brain adapts to an uncertain environment, we considered a reach adaptation protocol where individuals practiced moving in ...
Lugade Vipul V Motion Analysis Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: - - 2014
Knowledge of the center of pressure (COP) trajectory during stance can elucidate possible foot pathology, provide comparative effectiveness of foot orthotics, and allow for appropriate calculation of balance control and joint kinetics during gait. Therefore, the goal of this study was to investigate the COP movement when walking at self-selected ...
Seo Han Gil HG Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Republic of - - 2014
Although coordination and timing of swallowing have often been investigated by using discrete timing events such as the onset, peak, and duration of specific motions, the sequence and duration of swallowing events cannot represent the coordination of the swallowing mechanism quantitatively. This study aimed to apply a cross-correlation analysis of ...
Stewart Jill Campbell JC Program in Physical Therapy, Department of Exercise Science, University of South Carolina, Columbia, SC, USA, - - 2014
Nondisabled adults utilize both planning and feedback-based compensatory adjustments to control actual distance moved for skilled reach actions. The purpose of this study was to determine whether individuals post-stroke utilize planning and compensatory adjustments to control movement distance for reaches to targets that vary in distance. Individuals with mild to ...
Lambercy Olivier - - 2014
Instrumented objects and multi-purpose haptic displays have commonly been used to investigate sensorimotor control of grasping and manipulation. A major limitation of these devices, however, is the extent to which the experimenter can vary the interaction dynamics to fully probe sensorimotor control mechanisms. We propose a novel method to study ...
Palatinus Zsolt - - 2014
Research on dynamic touch has shown that when a rod strapped to the shoulders is wielded via axial rotations, flexions-extensions, and lateral bending of the trunk, participants can selectively perceive whole rod length and partial rod length (e.g., a leftward segment) with precision comparable to wielding by hand (Palatinus, Carello ...
van de Velde Daan J - - 2014
Objectives Performance of cochlear implant (CI) users on linguistic intonation recognition is poorer than that of normal-hearing listeners, due to the limited spectral detail provided by the implant. A higher spectral resolution is provided by narrow rather than by broad filter slopes. The corresponding effect of the filter slope on ...
González Esther G EG Vision Science Research Program, Toronto Western Hospital, Toronto, Canada, M5T 2S8; Ophthalmology and Vision Sciences, University of Toronto, Canada, M5T 2S8; Centre for Vision Research, York University, Toronto, Canada, M3J 1P3. Electronic address: - - 2014
The objective of this paper was to study the characteristics of closed-loop smooth pursuit eye movements of 15 unilaterally eye enucleated individuals and 18 age-matched controls and to compare them to their performance in two tests of motion perception: relative motion and motion coherence. The relative motion test used a ...
Akbarshahi Massoud M Department of Mechanical Engineering, University of Melbourne, Victoria 3010, - - 2014
Patellofemoral joint pain is a common problem experienced by active adults. However, relatively little is known about patellofemoral joint load and its distribution across the medial and lateral facets of the patella. In this study, biomechanical experiments and computational modeling were used to study patellofemoral contact mechanics in four healthy ...
Shepherd Jennifer H JH Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, E1 4NS, - - 2014
Many tendon injuries are believed to result from repetitive motion or overuse, leading to the accumulation of micro-damage over time. In vitro fatigue loading can be used to characterise damage during repeated use and investigate how this may relate to the aetiology of tendinopathy. This study considered the effect of ...
Roren Alexandra A Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Paris Descartes University, Paris, - - 2014
The participation of scapula motion in arm movement is clinically well known and recent three dimensional (3D) analyses using kinematic techniques have confirmed its importance. Scapular motion relative to the thorax has a theoretical maximum of 6 degrees of freedom (DoF), resulting from rotations at both clavicular joints (3 rotational ...
Tomassini Alice A Department of Robotics, Brain and Cognitive Sciences, Istituto Italiano di Tecnologia, 16163 Genova, Italy, - - 2014
Saccades cause compression of visual space around the saccadic target, and also a compression of time, both phenomena thought to be related to the problem of maintaining saccadic stability (Morrone et al., 2005; Burr and Morrone, 2011). Interestingly, similar phenomena occur at the time of hand movements, when tactile stimuli ...
Yamaguchi Kenji K The Department of Psychology, the Graduate School of Letters, Kyoto University, Yoshida-honmachi, Sakyou-ku, Kyoto, 606-8501, Japan, - - 2014
Time is a fundamental and critical factor in daily life. Millisecond timing, which is the underlying temporal processing for speaking, dancing, and other activities, is reported to rely on the cerebellum. In this review, we discuss the cerebellar spike-coding mechanisms for temporal processing. Although the contribution of the cerebellum to ...
Dakin Christopher J CJ University of British - - 2014
Rectification of surface electromyographic (EMG) recordings prior to their correlation with other signals is a widely used form of preprocessing. Recently this practice has come into question, elevating the subject of EMG rectification to a topic of much debate. Proponents for rectifying suggest it accentuates the EMG spike timing information; ...
Iyengar R R Department of Physiotherapy, Kasturba Medical College, Mangalore, Manipal University, Karnataka, - - 2014
This study was executed to find out correlation between postural alignment in sitting measured through photogrammetry and postural control in sitting following stroke. A cross-sectional study with convenient sampling consisting of 45 subjects with acute and sub-acute stroke. Postural alignment in sitting was measured through photogrammetry and relevant angles were ...
Murphy Christopher A CA Private practice, Madison, - - 2014
The aims of this study were to evaluate the effect of 2 distinct magnitudes of applied force with and without corticision (flapless corticotomy) on the rate of tooth movement and to examine the alveolar response in a rat model. A total of 44 male rats (6 weeks old) were equally divided ...
Clark Kyle K Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3 (Clark, Béraud); School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy SA 5371, Australia (Caraguel); Division of Orthopaedics, Department of Surgery, Dalhousie University, Halifax, Nova Scotia B3H 3J5 - - 2014
The objective of this study was to evaluate a novel accelerometer-based sensor system, the Walkabout Portable Gait Monitor (WPGM), for use in kinetic gait analysis of dogs. The accelerometer was compared to the common reference standard of force platform analysis. Fifteen client-owned, orthopedically sound dogs of various breeds underwent simultaneous ...
Kim Namkeun N Department of Mechanical Engineering, Stanford University, Stanford, - - 2014
For the most part, the coiled shape of the cochlea has been shown to have only minor importance for air-conducted hearing. It is hypothesized, however, that this coiled shape may play a more significant role for the bone-conducted (BC) route of hearing, through inertial forces exerted by the middle ear and ...
O'Connor Shawn M SM Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, - - 2014
When moving slowly, kangaroos plant their tail on the ground in sequence with their front and hind legs. To determine the tail's role in this 'pentapedal' gait, we measured the forces the tail exerts on the ground and calculated the mechanical power it generates. We found that the tail is ...
Bieńkiewicz Marta M N MM Lehrstuhl für Bewegungswissenschaft, Technische Universität München, Georg-Brauchle-Ring 60-62, München, Deutschland. Electronic address: - - 2014
Previous research has shown that Parkinson's disease (PD) patients can increase the speed of their movement when catching a moving ball compared to when reaching for a static ball (Majsak et al., 1998). A recent model proposed by Redgrave et al. (2010) explains this phenomenon with regards to the dichotomic ...
Liu Jian - - 2014
Prior to developing any specific fall detection algorithm, it is critical to distinguish the unique motion feature associated with fall accidents. The current study aimed to investigate the upper trunk angular kinematics during slip-induced backward falls and ADLs. Ten healthy elderly were involved in a laboratory study. Sagittal trunk angular ...
Chen I-Hsuan IH Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei 112, Taiwan, Republic of - - 2014
Given that the inter-limb asymmetry and additional balance control are required for turning, stroke subjects spend more time to turn than healthy subjects. Few studies have investigated specific turning-related neuromuscular and biomechanical strategies post-stroke to clarify factors favoring or hindering turning speed toward different directions. The purpose of this study ...
Rosales-Guzmán Carmelo - - 2014
We measure the rotational and translational velocity components of particles moving in helical motion under a Laguerre-Gaussian mode illumination. The moving particle reflects light that acquires an additional frequency shift proportional to the velocity of rotation in the transverse plane, on top of the usual frequency shift due to the ...
He Jiayuan - - 2014
Variations in muscle contraction effort have a substantial impact on performance of pattern recognition based myoelectric control. Though incorporating changes into training phase could decrease the effect, the training time would be increased and the clinical viability would be limited. The modulation of force relies on the coordination of multiple ...
Cohen R C Z CZ Computational Informatics, CSIRO, Clayton, VIC, - - 2014
The purpose of this study was to determine the pitching effects of buoyancy during all competitive swimming strokes - freestyle, backstroke, butterfly and breaststroke. Laser body scans of national-level athletes and synchronised multi-angle swimming footage were used in a novel markerless motion capture process to produce three-dimensional biomechanical models of ...
Mehrkanoon Saeid S School of Psychiatry, University of New South Wales, Sydney, Australia; Black Dog Institute, Sydney, Australia. Electronic address: - - 2014
Recent research suggests that neural oscillations in different frequency bands support distinct and sometimes parallel processing streams in neural circuits. Studies of the neural dynamics of human motor control have primarily focused on oscillations in the beta band (15-30Hz). During sustained muscle contractions, corticomuscular coherence is mainly present in the ...
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