Abstract：
:The present study explored whether rapid stepping is influenced by the coordination of an arm pointing task. Nine participants were instructed to (a) point the index finger of the dominant arm towards a target from the standing posture, (b) initiate a rapid forward step with the contralateral leg, and (c) synchronize stepping and pointing (combined task). Force plate and ankle muscle electromyography (EMG) recordings were contrasted between (b) and (c). In the combined task, the arm acceleration trace most often peaked around foot-off, coinciding with a 15% increase in the forward acceleration of the center of gravity (CoG). Backward displacement of the center of foot pressure at foot-off, duration of anticipatory postural adjustments (APAs) and ankle muscle EMG activity remained unchanged. In contrast, durations of swing phase and whole step were reduced and step length was smaller in the combined task. A reduction in the swing phase was correlated with an increased CoG forward acceleration at foot-off. Changes in the biomechanics of step initiation during the combined task might be ascribed to the postural dynamics elicited by arm pointing, and not to a modulation of the step APAs programming.
journal_name
Hum Mov Scijournal_title
Human movement scienceauthors
Yiou E,Schneider C,Roussel Ddoi
10.1016/j.humov.2007.03.003subject
Has Abstractpub_date
2007-06-01 00:00:00pages
357-75issue
3eissn
0167-9457issn
1872-7646pii
S0167-9457(07)00027-9journal_volume
26pub_type
杂志文章abstract：:Gurfinkel and colleagues (2006) recently found that healthy adults dynamically modulate postural muscle tone in the body axis during anti-gravity postural maintenance and that this modulation is inversely correlated with axial stiffness. Our objective in the present study was to investigate whether dynamic modulation ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.10.002
更新日期：2011-02-01 00:00:00
abstract：:Persons with multiple sclerosis (PwMS) often report problems due to sensory loss and have an inability to appropriately reweight sensory information. Both of these issues can affect individual's ability to maintain stability when walking under challenging conditions. The purpose of the current study was to determine h...
journal_title：Human movement science
pub_type： 杂志文章
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更新日期：2019-05-28 00:00:00
abstract：:Human gait has been widely investigated under dual-task conditions because it has been demonstrated to be an important way to uncover differences in gait biomechanics between older fallers and non-fallers. However, exactly how simultaneous tasks affect the kinematics of walking remains unclear. In the present study, g...
journal_title：Human movement science
pub_type： 杂志文章
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更新日期：2017-01-01 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
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.11.010
更新日期：2015-04-01 00:00:00
abstract：:The purpose of this experimental study was to evaluate the effects of vision and stretching of the calf muscles on postural sway during quiet standing. Under pre-stretch conditions, participants stood on a force plate for 30s and the sway of the ground reaction force center of pressure was recorded. The following post...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2005.12.005
更新日期：2006-06-01 00:00:00
abstract：:High-speed resistance training is used to increase power; however, momentum can reduce the effectiveness of high-speed (HS) training when using weight-stack (WS) machines. This study used a non-linear scaled wavelet analysis to assess differences between pneumatic (P) and WS during seven HS or controlled speed (CS) re...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.12.009
更新日期：2015-04-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.03.008
更新日期：2018-06-01 00:00:00
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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
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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：:In discrete aiming movements the task criteria of time-minimization to a spatial target (e.g., Fitts, 1954) and time-matching to a spatial-temporal goal (e.g., Schmidt et al., 1979) tend to produce different functions of the speed-accuracy trade-off. Here we examined whether the task-related movement speed-accuracy ch...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.02.009
更新日期：2019-04-01 00:00:00
abstract：:It was proposed that grasping is a relatively stereotyped movement pattern which can be subdivided into the components of manipulation, transport, and orientation of the hand. However, it is still a matter of debate whether these components are independent of each other. In three experiments we altered the start postu...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2009.03.001
更新日期：2009-08-01 00:00:00
abstract：:The present study examined the relationship between executive function (EF) and fine motor control in young and older healthy adults. Participants completed 3 measures of executive function; a spatial working memory (SWM) task, the Stockings of Cambridge task (planning), and the Intra-Dimensional Extra-Dimensional Set...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.11.001
更新日期：2017-01-01 00:00:00
abstract：INTRODUCTION:The present study investigated the effect of stretchable characteristics of elastic therapeutic tape and its elongation on surface electromyography (EMG) of knee extensor muscles during knee extension movements. METHODS:Nine healthy men performed knee extension movement with the application of normal elas...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.12.003
更新日期：2019-02-01 00:00:00
abstract：:It has been suggested that the temporal control of rhythmic unimanual movements is different between tasks requiring continuous (e.g., circle drawing) and discontinuous movements (e.g., finger tapping). Specifically, for continuous movements temporal regularities are an emergent property, whereas for tasks that involv...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2007.11.003
更新日期：2008-10-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2006.05.005
更新日期：2006-10-01 00:00:00
abstract：:This paper presents empirical evidence suggesting that healthy humans can perform a two degree of freedom visuo-motor pursuit tracking task with the same response time delay as a one degree of freedom task. In contrast, the time delay of the response is influenced markedly by the nature of the motor synergy required t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2005.10.003
更新日期：2005-10-01 00:00:00
abstract：:With the mounting realization that variability is an inevitable part of human behavior comes the need to integrate this phenomenon in concomitant models and theories of motor control. Among other things, this has resulted in a debate throughout the last decades about the origin of variability in behavior, the outcome ...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2013.01.008
更新日期：2013-08-01 00:00:00
abstract：:The present study examined the extent to which game format (possession play, SSG-P and game with regular goals and goalkeepers, SSG-G) and the number of players (5, 7 and 10 a-side) influence the physical demands of small-sided soccer games (SSGs) in elite soccer players. Training data were collected during the in-sea...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.05.006
更新日期：2014-08-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(01)00070-7
更新日期：2001-11-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(02)00117-3
更新日期：2002-10-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2007.04.002
更新日期：2007-08-01 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：:Synchronized group dancing is one of the hallmarks of both coordination and cooperation in the humans species. While a large amount of research has focused on joint action in dyads, the mechanisms of coordination in larger groups are not well understood. In the present study, we explored the coordination dynamics of a...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.12.005
更新日期：2019-02-01 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
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(03)00045-9
更新日期：2003-08-01 00:00:00
abstract：:The purpose of this study was to elucidate whether the anticipatory postural adjustment (APA) and focal step movement of gait initiation are produced as a single process or different processes and whether the APA receives an inhibitory drive from the ongoing stop process of gait initiation. Healthy humans initiated ga...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.01.003
更新日期：2017-04-01 00:00:00
abstract：:Clinicians use forward bending and backward return in routine clinical examinations for evaluating spine mobility. The magnitude and timing of lumbar spine and pelvic contributions have been described in the literature as lumbopelvic rhythm. There is still limited knowledge about the factors which can determinate lumb...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2018.02.008
更新日期：2018-04-01 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：:The aim of this study was to investigate the relationship between in quadriceps and hamstrings inter-limb strength asymmetry and change of direction, sprinting and jumping abilities in U21 elite soccer players. Twenty-seven soccer players volunteered for this study. Isokinetic quadriceps and hamstrings peak torque was...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.03.016
更新日期：2018-06-01 00:00:00
