Abstract：
:This research addresses the question: what is the risk of fall initiation at a certain human posture? There are postures from which no one is able to keep their balance and a fall will surely initiate (risk=1), and others from which everyone may regain their stability (risk=0). In other postures, only a portion of people can control their stability. One may interpret risk to chance of a fall to be initiated, and based on the portion of fallers assign a risk value to a given human posture (postural risk). Human posture can be mapped to a point in a 2-dimensional space: the x-v plane, the axes of which are horizontal components of the position and velocity of the center of mass of the body. For every pair of (x, v), the outcome of the balance recovery problem defines whether a person with a given strength level is able to regain their stability when released from a posture corresponding to that point. Using strength distribution data, we estimated the portion of the population who will initiate a fall if starting at a certain posture. A fast calculation approach is also introduced to replace the time-consuming method of solving the recovery problem many times. Postural risk of fall initiation for situations expressed by (x, v) pairs for the entire x-v plane is calculated and shown in a color-map.
journal_name
Hum Mov Scijournal_title
Human movement scienceauthors
Honarvar MH,Nakashima Mdoi
10.1016/j.humov.2012.11.009subject
Has Abstractpub_date
2013-10-01 00:00:00pages
1186-99issue
5eissn
0167-9457issn
1872-7646pii
S0167-9457(13)00005-5journal_volume
32pub_type
杂志文章abstract：:Falls are common in older adults. The most common cause of falls is tripping while walking. Simulation studies demonstrated that older adults may be restricted by lower limb strength and movement speed to regain balance after a trip. This review examines how modeling approaches can be used to determine how different m...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2013.07.001
更新日期：2013-10-01 00:00:00
abstract：:It has been suggested that the observation of another person's action affects the behavior of the observer because the observation of action leads to the excitation of similar response codes in the observer. It is unknown, however, if one must witness the action or if it is sufficient for one to believe that the other...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2007.06.003
更新日期：2007-12-01 00:00:00
abstract：:Tactics in squash have typically been assessed using the frequency of different shot types played at different locations on the court either without reference to other relevant information or on the basis of the preceding shot. This paper presents a new squash specific method for categorizing court locations in which ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.01.002
更新日期：2014-04-01 00:00:00
abstract：:Load carriage can be harmful for workers, and alternative interventions to reduce back pain while walking and carrying loads are necessary. Unstable shoes have been used to improve balance and reduce back pain, but it is unknown whether walking wearing unstable shoes while carrying loads anteriorly causes excessive tr...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.10.010
更新日期：2017-12-01 00:00:00
abstract：:Prior work demonstrates that humans spontaneously synchronize their head and trunk kinematics to a broad range of driving frequencies of perceived mediolateral motion prescribed using optical flow. Using a closed-loop visuomotor error augmentation task in an immersive virtual environment, we sought to understand wheth...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.102525
更新日期：2019-12-01 00:00:00
abstract：:Deficits in handwriting performance limit the school participation of children with developmental coordination disorder (DCD). The aim of this study was to compare the handwriting process and product characteristics of children with DCD to those of typically developing (TD) children in order to determine the best mean...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2008.02.011
更新日期：2008-04-01 00:00:00
abstract：:Obese children move less and with greater difficulty than their normal-weight counterparts. Whilst the effect of high BMI on cardiovascular fitness is well known, the effect on movement quality characteristics during a standardised fitness test has not been investigated. The aims of this study were, to characterise th...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.08.003
更新日期：2016-10-01 00:00:00
abstract：:In virtual reality it is easy to control the visual cues that tell us about an object's shape. However, it is much harder to provide realistic virtual haptic feedback when grasping virtual objects. In this study we examined the role of haptic feedback when grasping (virtual) cylinders with an elliptical circumference....
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2008.07.003
更新日期：2008-12-01 00:00:00
abstract：:Two recent studies in this journal (Wulf, Chiviacowsky, & Cardozo, 2014; Wulf, Chiviacowsky, & Drews, 2015) assessed the additive effects of autonomy support and enhanced expectancies (Wulf et al., 2014) and autonomy support and external focus (Wulf et al., 2015) on learning a novel throwing skill. Participants learne...
journal_title：Human movement science
pub_type： 评论,杂志文章
doi：10.1016/j.humov.2015.05.011
更新日期：2015-08-01 00:00:00
abstract：:Principles of motor control and learning such as bilateral coordination and task-specificity, are increasingly incorporated in the design of upper extremity rehabilitation protocols for stroke survivors. Yet most studies investigating the efficacy of new protocols report composite scores of standardized tests, such as...
journal_title：Human movement science
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.humov.2008.03.006
更新日期：2008-10-01 00:00:00
abstract：:Allowing learners to control the video presentation of knowledge of performance (KP) or an expert model during practice has been shown to facilitate motor learning (Aiken, Fairbrother, & Post, 2012; Wulf, Raupach, & Pfeiffer, 2005). Split-screen replay features now allow for the simultaneous presentation of these mode...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.01.014
更新日期：2016-06-01 00:00:00
abstract：:Developmental coordination disorder (DCD) is a neurodevelopmental condition affecting motor coordination in children and adults. Here, EEG signals elicited by visual and tactile stimuli were recorded while adult participants with and without probable DCD (pDCD) performed a motor task. The task cued reaching movements ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.02.018
更新日期：2019-04-10 00:00:00
abstract：:Suddenly changing direction requires a whole body reorientation strategy. In sporting duels such as an attacker vs. a defender in rugby, successful body orientation/reorientation strategies are essential for successful performance. The aim of this study is to examine which biomechanical factors, while taking into acco...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2009.12.004
更新日期：2010-06-01 00:00:00
abstract：:The purpose of the present study was to investigate the coordination pattern and coordination variability (intra-subject and inter-subject) in children and adults during vertical countermovement jumps. Ten children (mean age: 11.5±1.8years) and ten adults (mean age: 26.1±4.9years) participated in the experiment. Lower...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2015.12.004
更新日期：2016-04-01 00:00:00
abstract：:Regarding our voluntary control of movement, if identification of joint position, that is independent of the starting condition, is stronger than kinaesthetic movement reproduction, that implies knowledge of the starting position and movement's length for accuracy, is still a matter of debate in motor control theories...
journal_title：Human movement science
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.humov.2018.08.006
更新日期：2018-12-01 00:00:00
abstract：:The aim of the present study was to investigate the effect of expertise on coordination patterns. We thus tested the coordination dynamics of two groups: experts in the handstand also having high expertise in gymnastics and experts in the handstand but only intermediate expertise in gymnastics. All participants were i...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2008.05.003
更新日期：2009-02-01 00:00:00
abstract：:Sudden addition or removal of visual information can be particularly critical to balance control. The promptness of adaptation of stance control mechanisms is quantified by the latency at which body oscillation and postural muscle activity vary after a shift in visual condition. In the present study, volunteers stood ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.06.002
更新日期：2011-04-01 00:00:00
abstract：:The Animal Fun program was designed to enhance the motor ability of young children by imitating the movements of animals in a fun, inclusive setting. The efficacy of this program was investigated through a randomized controlled trial using a multivariate nested cohort design. Pre-intervention scores were recorded for ...
journal_title：Human movement science
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.humov.2012.08.004
更新日期：2013-10-01 00:00:00
abstract：:The aim of this study was to evaluate whether a mental training protocol could improve gymnastic jumping performance. Seventy-two rhythmic gymnasts were randomly divided into an experimental and control group. At baseline, experimental group completed the Movement Imagery Questionnaire Revised (MIQ-R) to assess the gy...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.10.001
更新日期：2014-12-01 00:00:00
abstract：:When people walk side-by-side, they often synchronize their steps. To achieve this, individuals might cross-modally match audiovisual signals from the movements of the partner and kinesthetic, cutaneous, visual and auditory signals from their own movements. Because signals from different sensory systems are processed ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.10.007
更新日期：2017-12-01 00:00:00
abstract：:Recent data support the idea that movements play a crucial role in letter representation and suggest that handwriting knowledge contributes to visual recognition of letters. If so, using different motor activities while subjects are learning to write should affect their subsequent recognition performances. In order to...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2006.07.007
更新日期：2006-10-01 00:00:00
abstract：OBJECTIVE:To compare the parameters of gait kinematics of older adults with cognitive impairment who live in community dwellings or those living or spending most of the time in non-family environment settings. METHODS:The sample was composed of 33 older adults of both sexes with cognitive impairment. Participants were...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2020.102747
更新日期：2021-02-01 00:00:00
abstract：:Stability is defined by the ability to return to the initial (or unperturbed) state following a perturbation and hence can be assessed by quantifying the post-perturbation response. This response may be divided into two phases: an initial passive response phase, dependent upon both the steady state of the system and t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.11.014
更新日期：2015-04-01 00:00:00
abstract：:Humans will naturally synchronize their posture to the motion of a visual surround, but it is unclear if this visuomotor entrainment can be attenuated with an increased sensitivity to somatosensory information. Sub-threshold vibratory noise applied to the Achilles tendons has proven to enhance ankle proprioception thr...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.06.009
更新日期：2019-06-28 00:00:00
abstract：:The aim of this work was to analyze the postural sway of volleyball players in bipedal quiet stance. The center of pressure (CoP) was measured in 46 athletes and 42 non-athlete controls. Each subject was tested in 10 different conditions, 5 with their eyes open and 5 with their eyes closed. Volleyball players showed g...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2013.01.002
更新日期：2013-06-01 00:00:00
abstract：:While humans rely on vision during navigation, they are also competent at navigating non-visually. However, non-visual navigation over large distances is not very accurate and can accumulate error. Currently, it is unclear whether this accumulation of error is due to the visual estimate of the distance or to the locom...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2013.04.003
更新日期：2013-08-01 00:00:00
abstract：:This review describes a novel view on stages in motor learning based on recent developments of the notion of synergies, the uncontrolled manifold hypothesis, and the equilibrium-point hypothesis (referent configuration) that allow to merge these notions into a single scheme of motor control. The principle of abundance...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2009.11.002
更新日期：2010-10-01 00:00:00
abstract：:Studies on myocontrolled assistive technology (AT), such as myoelectric prostheses, as well as rehabilitation practice using myoelectric controlled interfaces, commonly assume the existence of a general myocontrol skill. This is the skill to control myosignals in such a way that they are employable in multiple tasks. ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2020.102592
更新日期：2020-04-01 00:00:00
abstract：BACKGROUND:Tibialis posterior (TP) dysfunction is a common painful complication in patients with rheumatoid arthritis (RA), which can lead to the collapse of the medial longitudinal arch. Different theories have been developed to explain the causality of tibialis posterior dysfunction. In all these theories, pain is a ...
journal_title：Human movement science
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.humov.2019.04.002
更新日期：2019-08-01 00:00:00
abstract：PURPOSE:Gait disorders in multiple sclerosis (MS) are well studied; however, no previous study has described upper limb movements during gait. However, upper limb movements have an important role during locomotion and can be altered in MS patients due to direct MS lesions or mechanisms of compensation. The aim of this ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.05.014
更新日期：2017-08-01 00:00:00
