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 electromyography (EMG). Participants performed a vertical jump-and-reach task under two conditions in a counterbalanced order: external focus (i.e., focus on the rungs of the measurement device) and internal focus (i.e., focus on the fingers with which the rungs were to be touched). EMG activity of various muscles (anterior tibialis, biceps femoris, vastus lateralis, rectus femoris, gastrocnemius) was measured during jumps. Jump height was greater with an external compared to an internal focus. While there were no differences in muscle onset times between attentional focus conditions, EMG activity was generally lower with an external focus. These results suggest that neuromuscular coordination is enhanced by an external focus of attention. The present findings add to the evidence that an external focus facilitates the production of effective and efficient movement patterns.
journal_name
Hum Mov Scijournal_title
Human movement scienceauthors
Wulf G,Dufek JS,Lozano L,Pettigrew Cdoi
10.1016/j.humov.2009.11.008subject
Has Abstractpub_date
2010-06-01 00:00:00pages
440-8issue
3eissn
0167-9457issn
1872-7646pii
S0167-9457(09)00120-1journal_volume
29pub_type
杂志文章abstract：:The yips is a multi-aetiological phenomenon that is characterized by an involuntary movement that can affect a golfer's putting performance. Diagnostics are crucial for a better understanding of what causes the yips but are still lacking. The purpose of the present study was therefore to identify sensitive methods for...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2013.04.004
更新日期：2013-12-01 00:00:00
abstract：:Tripping and falling is a serious health problem for older citizens due to the high medical costs incurred and the high mortality rates precipitated mostly by hip fractures that do not heal well. Current falls prevention technology encompasses a broad range of interventions; both passive (e.g., safer environments, hip...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.07.009
更新日期：2012-04-01 00:00:00
abstract：:External load training (ELT) is a supplemental training method used to potentially improve high intensity task performance. However, biomechanical parameters such as ground reaction forces (GRF), ground contact time, and time to peak GRF during a drop vertical jump (DVJ) following an ELT intervention have yet to be ex...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.03.011
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.2020.102742
更新日期：2021-02-01 00:00:00
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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：:In the context of perceptual-cognitive expertise it is important to know whether physiological loads influence perceptual-cognitive performance. This study examined whether a handball specific physical exercise load influenced participants' speed and accuracy in a flicker task. At rest and during a specific interval e...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.05.001
更新日期：2016-08-01 00:00:00
abstract：:Rhythmic limb movements have been shown to spontaneously coordinate with rhythmic environmental stimuli. Previous research has demonstrated how such entrainment depends on the difference between the movement periods of the limb and the stimulus, and on the degree to which the actor visually tracks the stimulus. Here w...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2011.08.002
更新日期：2012-06-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.11.010
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.2017.10.012
更新日期：2018-02-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.05.018
更新日期：2019-05-28 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.03.016
更新日期：2018-06-01 00:00:00
abstract：:Position sense has been found to decay as a function of the time delay the limb remains in a static position prior to movement onset. Position sense has also been found to deteriorate as a function of aging, with increased reliance on vision by the elderly. This study investigated whether the pointing kinematics of el...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(02)00160-4
更新日期：2003-04-01 00:00:00
abstract：:Over the last decades or so, empirical studies of perception, action, learning, and development have revealed that participants vary in what variable they detect and often rely on nonspecifying variables. This casts doubt on the Gibsonian conception of information as specification. It is argued that a recent ecologica...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2009.09.003
更新日期：2010-02-01 00:00:00
abstract：BACKGROUND:Backward walking training (BWT) is thought to affect gait biomechanics, but relevant evidence has been sparse and inconclusive. OBJECTIVE:This study systematically reviewed and quantified the effectiveness of BWT on spatial-temporal gait characteristics (STGC). METHODS:A keyword and reference search of int...
journal_title：Human movement science
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.humov.2018.05.007
更新日期：2018-08-01 00:00:00
abstract：:We evaluate an improved method for individually determining neuromuscular properties in vivo. The method is based on Hill's equation used as a force law combined with Newton's equation of motion. To ensure the range of validity of Hill's equation, we first perform detailed investigations on in vitro single muscles. Th...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2007.01.006
更新日期：2007-04-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.08.004
更新日期：2017-10-01 00:00:00
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2016.08.003
更新日期：2016-10-01 00:00:00
abstract：:Previous studies have found that rates of attention deficit hyperactivity disorder (ADHD) and developmental coordination disorder (DCD) are very similar, both being approximately 7% in sample populations [Kadesjö, B., & Gillberg, C. (1999). Developmental coordination disorder in Swedish 7-year-old children. Journal of...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2005.10.006
更新日期：2006-02-01 00:00:00
abstract：:Healthy children (n=12, age 7years) and young adults (n=11, age 21years) were asked to perform a bimanual balance and reaching protocol in a seated posture. Subjects balanced a ball on a Frisbee on the non-dominant palm of the hand while reaching with the dominant hand to pick up a toy off the ground. During half of t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2015.03.001
更新日期：2015-06-01 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：: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
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journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.05.005
更新日期：2011-08-01 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：:An experiment was designed to determine if the addition of a load altered the effector transfer profile observed in earlier experiments using multi-element movement sequences. The acquisition task required participants to move a horizontal lever (with 0.567kg load) to 16 sequentially projected targets. One group pract...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2009.08.001
更新日期：2010-02-01 00:00:00
abstract：:The aim of the study was to determine the effects of variations in eccentric loading and knee joint range of motion on performance enhancement associated with the stretch-shortening cycle in vertical jumping. Seventeen male elite volleyball players performed three variations of the vertical jump which served as the re...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2007.05.001
更新日期：2007-12-01 00:00:00
abstract：:Motion sickness is preceded by differences in the quantitative kinematics of body sway between individuals who (later) become sick and those who do not. In existing research, this effect has been demonstrated only in measures of body sway, relative to the earth. However, body sway can become coupled with imposed oscil...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2019.03.006
更新日期：2019-04-01 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
abstract：BACKGROUND:This study investigated if intensive piano training may be associated with improved motor and somatosensory function. We systematically examined upper limb proprioception, which is known to play an essential role in skill movements, and motor function in young pianists. METHOD:Forty-four typically developin...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2020.102748
更新日期：2021-02-01 00:00:00
abstract：:Gait analysis is used for the assessment of walking ability of children with cerebral palsy (CP), to inform clinical decision making and to quantify changes after treatment. To simplify gait analysis interpretation and to quantify deviations from normality, some quantitative synthetic descriptors were developed over t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.08.005
更新日期：2017-10-01 00:00:00
abstract：:Recent studies have demonstrated that the direction of attentional focus exerts a substantial influence on motor performance. We argue that in well-learned skills, this variable might be confounded with athletes' familiarity with focus conditions. We studied the effect of familiarity and the direction of attentional f...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2013.02.001
更新日期：2013-08-01 00:00:00
