Abstract：
:The purpose of this study was to gain insight into the kinematics and kinetics of the vertical jump when jumping for different heights and to investigate movement effectiveness as a criterion for movement control in submaximal jumping. In order to jump high a countermovement is used and large body segments are rotated, both of which consume energy which is not directly used to gain extra jump height. It was hypothesized that the energy used to reach a specified jump height is minimized by limiting the non-effective energy consumed. Standing vertical jumps attempting 100%, 75%, 50%, and 25% of maximal height were performed by a group of 10 subjects. Force and motion data were recorded simultaneously during each performance. We found that jump height increased due to increasing vertical velocity at take off. This was primarily related to an increase in countermovement amplitude. As such, flexion amplitude of the hip joint increased with jump height whereas the ankle and knee joint flexion did not. These findings revealed that for submaximal jumping a consistent strategy was used of maximizing the contribution of distal joints and minimizing the contribution of proximal joints. Taking into account the high inertia of proximal segments, the potential energy deficit due to countermovement prior to joint extension, the advantageous horizontal orientation of the foot segment during stance and the tendon lengths in distal muscles, it was concluded that movement effectiveness is a likely candidate for the driving criterion of this strategy.
journal_name
Hum Mov Scijournal_title
Human movement scienceauthors
Vanrenterghem J,Lees A,Lenoir M,Aerts P,De Clercq Ddoi
10.1016/j.humov.2003.11.001subject
Has Abstractpub_date
2004-04-01 00:00:00pages
713-27issue
6eissn
0167-9457issn
1872-7646pii
S0167945703000848journal_volume
22pub_type
杂志文章abstract：:Two questions emerge from the literature concerning the perceptual-motor processes underlying the visual regulation of step length. The first concerns the effects of velocity on the onset of visual control (VCO), when visual regulation of step length begins during goal-directed locomotion. The second concerns the effe...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(01)00060-4
更新日期：2001-11-01 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：: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：:Using dynamical modeling tools, the aim of the study was to establish a minimal model reproducing leg movements in cross-country skiing, and to evaluate the eventual adjustments of this model with fatigue. The participants (N=8) skied on a treadmill at 90% of their maximal oxygen consumption, up to exhaustion, using t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.03.001
更新日期：2010-08-01 00:00:00
abstract：:In this article, we elaborate from a multiple time scales model of motor learning to examine the independent and integrated effects of massed and distributed practice schedules within- and between-sessions on the persistent (learning) and transient (warm-up, fatigue) processes of performance change. The timescales fra...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2018.04.004
更新日期：2018-06-01 00:00:00
abstract：:During anti-phased locomotor tasks such as cycling or walking, hemiparetic phasing of muscle activity is characterized by inappropriate early onset of activity for some paretic muscles and prolonged activity in others. Pedaling with the paretic limb alone reduces inappropriate prolonged activity, suggesting a combined...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2011.03.001
更新日期：2011-12-01 00:00:00
abstract：:The purpose of this study was to determine the neuromuscular mechanisms of the involved muscles that contribute to the greater positional variability at the ankle joint in older adults compared with young adults. Eleven young adults (25.6±4.9 years) and nine older adults (76.9±5.9 years) were asked to accurately match...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2012.05.002
更新日期：2012-12-01 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 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：:Thirty-two children with Developmental Coordination Disorder (DCD) and learning disabilities (LD) and their age-matched controls attending normal primary schools were investigated using kinematic movement analysis of fine-motor performance. Three hypotheses about the nature of the motor deficits observed in children w...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2003.09.006
更新日期：2003-11-01 00:00:00
abstract：:Anticipatory postural adjustments (APAs) are an integral part of standing balance. Previous research with balance control has shown that adopting an external focus of attention, compared to an internal focus of attention, yields better performance during motor skills. Despite the importance of APAs, especially among o...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.02.019
更新日期：2019-04-01 00:00:00
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：:The modelling of the parallel bars-gymnast system is considered. A 2D frontal plane model for the parallel bars apparatus is developed, enabling technique and injury analysis to be undertaken when combined with an interacting gymnast body model. We also demonstrate how such a gymnast body model may be combined with th...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2005.11.008
更新日期：2006-04-01 00:00:00
abstract：:The present study investigated Bernstein's [The co-ordination and regulation of movements, 1967] proposal regarding the three stages of learning in the changing coordination and control of redundant joint-space degrees of freedom. Six participants practiced maintaining balance on a moving platform that was sinusoidall...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(02)00177-x
更新日期：2003-02-01 00:00:00
abstract：:The purpose of this study was to test whether a constant bearing angle strategy could account for the displacement regulations produced by a moving observer when attempting to intercept a ball following a curvilinear path. The participants were asked to walk through a virtual environment and to change, if (deemed) nec...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2006.04.001
更新日期：2006-12-01 00:00:00
abstract：:Two reliable findings in discrete, rapid aimed movements are that reaction time increases with decrease in target diameter (for the short-length movements), and reaction time is not affected by movement length [Journal of Experimental Psychology, Human Perception and Performance 104 (2) (1975) 147]. Participants norma...
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
abstract：:People produce multi-joint movements by organizing many degrees of freedom into a few major covarying relationships, indicating a high level of inter-joint coordination. These relationships can be identified using data decomposition analyses (e.g. principal components analysis, non-negative matrix factorization). The ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.10.015
更新日期：2017-12-01 00:00:00
abstract：:This study examined at what age children can engage in the hand rotation task (as a measure of motor imagery); whether engagement changes across development and; the influence of age and motor skill on performance. Children were aged 5-12 years (N=101; 52 girls), with no IQ or motor skill impairment. Less than 40% of ...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.03.013
更新日期：2014-06-01 00:00:00
abstract：:The experiment was conducted to determine the influence of mirror movements in bimanual coordination during life span. Children, young adults, and older adults were instructed to perform a continuous 1:2 bimanual coordination task by performing flexion-extension wrist movements over 30s where symmetrical and non-symme...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.01.004
更新日期：2016-04-01 00:00:00
abstract：:In this experimental study, we tested whether athletes' judgments of affordances and of environmental features vary with psychological momentum (PM). We recruited golf, hockey, and tennis players, who were assigned to a positive or negative momentum condition. We designed a golf course on which participants made pract...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.10.009
更新日期：2018-12-01 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
abstract：:Human voluntary movement involves the integration of kinaesthetic information with efferent motor activity during the planning and execution stages of movement. While much is known of the inhibitory and excitatory effects resulting from activation of specific kinaesthetic sensory receptors, in the present study we emp...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(02)00169-0
更新日期：2002-12-01 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：:Three-dimensional gait analysis is the gold standard for gait-assessment in patients with stroke. This technique is commonly used to assess the effect of treatment on gait parameters. In clinical practice, three gait analyses are usually carried out (baseline, after treatment and follow-up), the objectives were to def...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.01.011
更新日期：2019-04-01 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：: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：:In vaulting a gymnast must generate sufficient linear and angular momentum during the approach and table contact to complete the rotational requirements in the post-flight phase. This study investigated the optimization of table touchdown conditions and table contact technique for the maximization of rotation potentia...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2015.05.006
更新日期：2015-08-01 00:00:00
abstract：:Jump height is increased when performers are given external focus instructions, relative to an internal focus or no focus instructions (Wulf & Dufek, 2009; Wulf, Zachry, Granados, & Dufek, 2007). The purpose of present study was to examine possible underlying neurophysiological mechanisms of this effect by using elect...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2009.11.008
更新日期：2010-06-01 00:00:00
abstract：:If the magnitude of timing and angle variability in whole body coordinated movements were known, this would allow more realistic levels of variability to be included within optimizations of technique. The aim of this study was to determine the technique for improved consistency of performance of the Tkatchev release a...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2011.08.009
更新日期：2012-08-01 00:00:00
abstract：:This study was performed to investigate whether components from trunk progression (TP) and step length were related to step length asymmetry in walking in patients with hemiparesis. Gait analysis was performed for participants with hemiparesis and healthy controls. The distance between the pelvis and foot in the anter...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.06.004
更新日期：2016-10-01 00:00:00
