Abstract：
:Experimental muscle pain typically reorganizes the motor control. The pain effects may decrease when the three-dimensional force components are voluntarily adjusted, but it is not known if this could have negative consequences on other structures of the motor system. The present study assessed the effects of acute pain on the force variability during sustained elbow flexion when controlling task-related (one-dimensional) and all (three-dimensional) contraction force components via visual feedback. Experimental muscle pain was induced by bolus injection of hypertonic saline into m. biceps brachii, and isotonic saline was used as control. Twelve subjects performed sustained elbow flexion at different levels of the maximal voluntary contraction (5-30% MVC) before, during, and after the injections. Three-dimensional force components were measured simultaneously with surface electromyography (EMG) from elbow flexors and auxiliary muscles. Results showed that force variability was increased during pain compared to baseline for contractions using one-dimensional feedback (P<.05), but no significant differences were found for three-dimensional feedback. During painful contractions (1) EMG activity from m. trapezius was increased during contractions using both one-dimensional and three-dimensional feedback (P<.05), and (2) the complexity of EMG from m. triceps brachii and m. deltoid was higher for the three-dimensional feedback (P<.05). In conclusion, the three-dimensional feedback reduced the pain-related functional distortion at the cost of a more complex control of synergistic muscles.
journal_name
Hum Mov Scijournal_title
Human movement scienceauthors
Mista CA,Christensen SW,Graven-Nielsen Tdoi
10.1016/j.humov.2014.09.006subject
Has Abstractpub_date
2015-02-01 00:00:00pages
222-35eissn
0167-9457issn
1872-7646pii
S0167-9457(14)00165-1journal_volume
39pub_type
杂志文章abstract：:Co-ordinated bi-manual actions form the basis for many everyday motor skills. In this review, the internal model approach to the problem of bi-manual co-ordination is presented. Bi-manual coordinative tasks are often regarded as a hallmark of complex action. They are often associated with object manipulation, whether ...
journal_title：Human movement science
pub_type： 杂志文章,评审
doi：10.1016/j.humov.2004.10.009
更新日期：2004-11-01 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：: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：: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：:Prior research has found that the level of regularity in the output of numerous physiological systems is lowest in healthy young adults and higher in groups such as the elderly and those with various diseases. Vascular restriction has been found to stimulate exercise induced responses, including greater muscle activat...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2013.01.007
更新日期：2013-06-01 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 examine whether explicit instruction would facilitate arm reactions in individuals with Parkinson's disease (PD). Individuals with (n = 10) and without (n = 15) PD responded to unexpected support-surface translations. To recover their balance, participants were required to either respo...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2014.07.003
更新日期：2014-10-01 00:00:00
abstract：:When one finger changes its force, other fingers of the hand can show unintended force changes in the same direction (enslaving) and in the opposite direction (error compensation). We tested a hypothesis that externally imposed changes in finger force predominantly lead to error compensation effects in other fingers t...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.08.021
更新日期：2011-06-01 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：:Previous studies found little or no transfer of adaptation from reactive saccades to arm pointing movements, which suggests that the two motor systems rely on distinct adaptive mechanisms. However, this conclusion is based on experiments about the adaptation of response amplitudes, which is known to follow somewhat di...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2008.01.001
更新日期：2008-06-01 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：:Children who have been diagnosed with any one developmental disorder are very likely to meet diagnostic criteria for some other developmental disorder. Although comorbidity has long been acknowledged in childhood disorders, little is understood about the mechanisms that are responsible for the high level of comorbidit...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2004.08.019
更新日期：2004-10-01 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：: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：:Voluntary adduction-abduction movements of one arm in the horizontal plane discharge a reaction torque which would rotate the trunk in the direction opposite to arm acceleration. Rotation is impeded by muscular fixation chains that exert forces counterbalancing the reaction torque. We examined how two different fixati...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2010.02.005
更新日期：2011-04-01 00:00:00
abstract：:Falls are a serious health and medical concern facing older adults worldwide. Both muscle strength and power have been related to falls among older adults. The primary purpose of this study was to identify which one of these two muscular performances is more important in preventing a slip-related fall. Twenty-six heal...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2015.09.001
更新日期：2015-12-01 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
abstract：:Two experiments were conducted to investigate the reaction times (RTs) and anticipation of karate athletes. In Experiment 1, choice RTs and simple RTs were measured with two types of stimuli. One was videotaped scenes of opponent's offensive actions, which simulated the athletes' view in real situations, and the other...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/s0167-9457(02)00103-3
更新日期：2002-07-01 00:00:00
abstract：:Current research has yet to determine how passive dynamics and active neural control contribute to upper limb swing during human locomotion. The present study aimed to investigate these contributions by restricting pelvis motion during walking, thereby altering the upward energy transfer from the swinging lower limbs....
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2017.09.009
更新日期：2018-02-01 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：: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：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
abstract：:This paper involved a biomechanical analysis of lower limb joint coordination during hula hooping. A lower extremity inverse dynamics model that incorporated kinematic input and force platform data was developed to compute the angular velocities, moments about and powers produced at the lower extremity joints. The abd...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2008.02.018
更新日期：2008-08-01 00:00:00
abstract：:Motion analyses of lower body mechanics offer new schemas to address injury prevention strategies among baseball pitchers, where the influence of stride length remains unknown. This study examined the temporal effect of stride length at constituent pitching events and phases. Nineteen competitive pitchers (15 collegia...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2015.03.005
更新日期：2015-06-01 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：: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：: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
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：:Different modes of perturbations have been used to understand how individuals negotiate irregular surfaces, with a general notion that increased locomotion variability induces a positive training stimulus. Individuals tend to walk slower when initially exposed to such locomotion tasks, potentially influencing the magn...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2018.04.003
更新日期：2018-06-01 00:00:00
abstract：:The purpose of this study was to investigate changes in postural sway and strategy elicited by lumbar extensor muscle fatigue. Specifically, changes in center of mass (COM), center of pressure (COP), and joint kinematics during quiet standing were determined, as well as selected cross correlations between these variab...
journal_title：Human movement science
pub_type： 杂志文章
doi：10.1016/j.humov.2006.04.004
更新日期：2006-12-01 00:00:00
