Motor Control最新文献

Toward an Operational Dynamical Model of Lateral Manual Interception Behavior. 建立侧向手动拦截行为的运行动力学模型。

IF 0.9 4区医学

Motor Control Pub Date : 2024-11-20 DOI: 10.1123/mc.2024-0036

Danial Borooghani, Remy Casanova, Frank T J M Zaal, Reinoud J Bootsma

{"title":"Toward an Operational Dynamical Model of Lateral Manual Interception Behavior.","authors":"Danial Borooghani, Remy Casanova, Frank T J M Zaal, Reinoud J Bootsma","doi":"10.1123/mc.2024-0036","DOIUrl":"https://doi.org/10.1123/mc.2024-0036","url":null,"abstract":"We develop a dynamics-based model of discrete movement for lateral manual interception capable of generating movements with realistic kinematics. For the present purposes, we focus on the situation of to-be-intercepted targets moving at constant speed along rectilinear trajectories oriented orthogonally with respect to the interception axis. The proposed phenomenological model is designed to capture the time evolution of empirically observed hand movements along the interception axis under different conditions of target arrival location and target speed-induced time pressure. Pattern formation dynamics combine a Duffing stiffness function, allowing for creating a fixed-point attractor at the perceived location of the target arrival on the interception axis, with a hybrid Rayleigh plus Van der Pol damping function. After parametrizing the model for required movement direction (left/right), amplitude, and duration, it adequately reproduces the (variations in) empirically observed kinematics with a single set of four coefficients for all conditions considered. The model is also demonstrated to inherently incorporate speed-accuracy trade-off characteristics.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-16"},"PeriodicalIF":0.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142683506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Cognitive and Motor Dual Tasks on the Synergy of Lower Limb Muscles During Walking. 认知和运动双重任务对步行时下肢肌肉协同作用的影响

IF 0.9 4区医学

Motor Control Pub Date : 2024-11-15 DOI: 10.1123/mc.2024-0080

Sara Sadeghi, Behrouz Hajilou, Hassan Rohbanfard

{"title":"The Effect of Cognitive and Motor Dual Tasks on the Synergy of Lower Limb Muscles During Walking.","authors":"Sara Sadeghi, Behrouz Hajilou, Hassan Rohbanfard","doi":"10.1123/mc.2024-0080","DOIUrl":"https://doi.org/10.1123/mc.2024-0080","url":null,"abstract":"Objective: Walking is one of the most complex human movements that can be affected by various sources of attention. Dual tasks reduce attention, increase information processing, and may alter control mechanisms such as synergy. However, the effect of dual tasks on muscle synergy remains unknown. Therefore, this study aimed to investigate the effect of cognitive and motor dual tasks on the synergy of lower limb muscles during walking.Methods: Twenty-four participants were selected voluntarily. The activity of the eight lower limb muscles was recorded under three different conditions: normal walking without a dual task, walking with a cognitive dual task, and walking with a motor dual task. A nonnegative matrix factorization algorithm and the variance accounted for were used to extract muscle synergy. The repeated-measures analysis of variance test and Pearson's correlation coefficient were performed to analyze the data.Results: In this study, five muscle synergies were extracted from electromyography data using the variance accounted for method under three different conditions. The pattern of muscle synergies showed moderate to strong correlations. Peaks of synergies changed, and a time shift in synergy peaks during walking was observed. However, the number of extracted synergies did not change.Conclusion: The number of recruited muscle synergies remained consistent across different conditions. Dual tasks affect the higher levels of the motor control system, causing interference in information processing that leads to a shift in the tendency of synergy and weight coefficients of the muscles, ultimately resulting in a change in walking mechanics.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-12"},"PeriodicalIF":0.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Attentional Focus Strategies Can Improve Performance of Postural Control in Runners. 注意力集中策略可提高跑步者的姿势控制能力

IF 0.9 4区医学

Motor Control Pub Date : 2024-08-26 DOI: 10.1123/mc.2024-0013

Anderson R Delunardo, Gabriela V Magalhães, Natalia M Rinaldi

{"title":"Attentional Focus Strategies Can Improve Performance of Postural Control in Runners.","authors":"Anderson R Delunardo, Gabriela V Magalhães, Natalia M Rinaldi","doi":"10.1123/mc.2024-0013","DOIUrl":"https://doi.org/10.1123/mc.2024-0013","url":null,"abstract":"Attentional focus strategies, especially external focus, are associated with improvements in mechanisms of postural control. This can be important in reducing sports injuries in practices such as running, which has seen an increase in adherence. However, the impacts of these strategies on postural control in runners are unclear. This study aimed to investigate the effects of internal and external focus strategies on postural control performance with different bases of support tasks in runners. A total of 19 young adults (18-38 years old) were divided into a running group (n = 9) and a control group (n = 10). Posturography tests were performed on stable and unstable surfaces, under control, and internal and external focus conditions. The distance, mean velocity, and total velocity of the center of pressure were analyzed (p ≤ .05). There was a reduction in oscillation under external focus compared to internal and control conditions, as well as under internal focus compared to the control condition. A Group × Surface × Focus interaction for the variables distance and mean velocity in the mediolateral direction was found only for the control group. However, no significant effects were found between groups for postural control performance. Attentional focus strategies were able to reduce postural sway, with external focus condition being the most effective. Practitioners can benefit from these strategies to increase postural control performance to help reduce the number of injuries and improve sports performance. It is speculated that the effects of attentional control strategies on postural control may differ depending on the specific adaptations of each sport.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-20"},"PeriodicalIF":0.9,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142074384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Postmovement Beta Rebound in Real and Imagined Movement. 真实和想象运动中的运动后贝塔反弹。

IF 0.9 4区医学

Motor Control Pub Date : 2024-08-22 DOI: 10.1123/mc.2023-0033

Helene M Sisti, Annika Beebe, Elias Gabrielsson, Mercedes Bishop

{"title":"Postmovement Beta Rebound in Real and Imagined Movement.","authors":"Helene M Sisti, Annika Beebe, Elias Gabrielsson, Mercedes Bishop","doi":"10.1123/mc.2023-0033","DOIUrl":"https://doi.org/10.1123/mc.2023-0033","url":null,"abstract":"Movement disorders, such as stroke and amyotrophic lateral sclerosis, result in loss of upper limb function and, hence, severe impairments of bimanual coordination. Although motor imagery is increasingly used to enhance neurorehabilitation, cognitive and neurophysiological parameters that inform effective strategies remain elusive. The aim of the present study is to elucidate the neural dynamics that underlie learning during real and imagined movement using both unimanual and bimanual coordination patterns. The post movement beta rebound (PMBR) has been implicated as a biomarker of motor control and therefore was the focus of this study. Healthy adults (n = 21) learned a visuomotor tracking task in a single session using either one or both hands while brainwaves were captured using electroencephalography. Postmovement beta rebound was evident in the sensorimotor cortex for both unimanual and bimanual conditions. Task-related power of the beta band demonstrated that actual unimanual movement requires greater contralateral activity compared with both actual bimanual movement and imagined movement of either condition. Notably, the PMBR was evident even in imagined movement, although to a lesser extent than real movement. Neurophysiological results support a functional role for beta band in movement. Results of these data may inform neurorehabilitation strategies for patients recovering from movement disorders of the upper limbs.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-16"},"PeriodicalIF":0.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of a Perturbation-Based Balance Training Session on Adaptive Locomotor Response in Older Adults With a History of Falls. 基于扰动的平衡训练对有跌倒史的老年人适应性运动反应的影响

IF 0.9 4区医学

Motor Control Pub Date : 2024-08-22 DOI: 10.1123/mc.2023-0147

Júlia O Faria, Maria E C Favretto, Isadora S Bezerra, Thiago F Santos, Tenysson W Lemos, Eduardo B Junqueira, Paulo R P Santiago, Renato Moraes

{"title":"Effect of a Perturbation-Based Balance Training Session on Adaptive Locomotor Response in Older Adults With a History of Falls.","authors":"Júlia O Faria, Maria E C Favretto, Isadora S Bezerra, Thiago F Santos, Tenysson W Lemos, Eduardo B Junqueira, Paulo R P Santiago, Renato Moraes","doi":"10.1123/mc.2023-0147","DOIUrl":"https://doi.org/10.1123/mc.2023-0147","url":null,"abstract":"Aim: To assess the adaptive response of older adults with a history of falls in a single Perturbation-Based Balance Training (PBT) session by examining the margin of stability (MoS) and the number of falls.Methods: Thirty-two older adults with a history of falls underwent a treadmill walking session lasting 20-25 min. During the PBT protocol, participants experienced 24 unexpected perturbations delivered in two ways: acceleration or deceleration of the treadmill belt, with 12 perturbations in each direction. The MoS in the anteroposterior direction was assessed for the first and last perturbations of the session, during the perturbation step (N) and the recovery step (REC), along with the number of falls during the training session.Results: There was no statistically significant difference in MoS between the first and last perturbations (acceleration and deceleration) for steps N and REC. Regarding the number of falls, a significant reduction was found when comparing the first half with the second half of the training session (p = .033). There were 13 falls in the first half and only three in the second half of the PBT session.Conclusion: Older adults with a history of falls exhibited an adaptive response with a reduction in the number of falls during a single session of PBT despite not showing changes in the MoS.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-16"},"PeriodicalIF":0.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vision Is Not Required to Elicit Balance Improvements From Beam Walking Practice. 横梁行走练习不需要视觉就能提高平衡能力

IF 0.9 4区医学

Motor Control Pub Date : 2024-08-19 Print Date: 2024-10-01 DOI: 10.1123/mc.2023-0145

Natalie Richer, Steven M Peterson, Daniel P Ferris

{"title":"Vision Is Not Required to Elicit Balance Improvements From Beam Walking Practice.","authors":"Natalie Richer, Steven M Peterson, Daniel P Ferris","doi":"10.1123/mc.2023-0145","DOIUrl":"10.1123/mc.2023-0145","url":null,"abstract":"Background: Beam walking is a highly studied assessment of walking balance. Recent research has demonstrated that brief intermittent visual rotations and occlusions can increase the efficacy of beam walking practice on subsequent beam walking without visual perturbations. We sought to examine the influence of full vision removal during practice walking on a treadmill-mounted balance beam. Although visual disruptions improved performance of this task, we hypothesized that removing visual feedback completely would lead to less balance improvements than with normal vision due to the specificity of practice.Methods: Twenty healthy young adults trained to walk at a fixed speed on a treadmill-mounted balance beam for 30 min, either with, or without, normal vision. We compared their balance pre-, during, and posttraining by calculating their step-offs per minute and the percentage change in step-offs per minute.Results: Balance improved in both groups after training, with no significant difference in percentage change in step-offs between the normal vision and the no vision participants. On average, the no vision participants had twice as many step-offs per minute as the normal vision group during training.Conclusion: Although previous experiments show that intermittent visual perturbations led to large enhancements of the effectiveness of beam walking training, completely removing visual feedback did not alter training effectiveness compared with normal vision training. It is likely a result of sensory reweighting in the absence of vision, where a greater weight was placed on proprioceptive, cutaneous, and vestibular inputs.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"480-492"},"PeriodicalIF":0.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Task Cost Effects on Static Posture Control Parameters and Choice Reaction Time in Individuals With and Without Intellectual Disabilities. 双重任务成本对有智力障碍和无智力障碍人士的静态姿势控制参数和选择反应时间的影响。

IF 0.9 4区医学

Motor Control Pub Date : 2024-07-27 DOI: 10.1123/mc.2023-0074

Danica Janicijevic, Saray Muñoz-López, Andrés Román Espinaco, Carmen Gutiérrez-Cruz

{"title":"Dual-Task Cost Effects on Static Posture Control Parameters and Choice Reaction Time in Individuals With and Without Intellectual Disabilities.","authors":"Danica Janicijevic, Saray Muñoz-López, Andrés Román Espinaco, Carmen Gutiérrez-Cruz","doi":"10.1123/mc.2023-0074","DOIUrl":"https://doi.org/10.1123/mc.2023-0074","url":null,"abstract":"This study aimed to evaluate the effect of age and intellectual disability (ID) on postural balance parameters, dual-task cost (DTC), and choice reaction time (CRT). Fifty-eight individuals with ID and 55 peers without ID performed a postural stance balance task under two conditions: a single task with eyes open and dual task involving an additional cognitive task (light sequence). Four postural balance parameters (total displacement, total sway area, mediolateral, and anteroposterior dispersion), cost of the dual task ([DTC%] = [(single-task performance - dual-task performance)/single-task performance] × 100), and CRT were recorded, calculated, and analyzed. All postural control parameters reflected poorerperformance during the dual-task condition, nevertheless, DTC was significantly higher only in individuals with ID and only for the total sway area, F(1, 111) = 5.039, p = .027, and mediolateral dispersion, F(1, 111) = 6.576, p = .012. CRT was longer in individuals with ID compared with the individuals without ID, F(1, 111) = 94.979, p ≤ .001, while age did not have a significant effect on the DTC nor on the CRT, F(1, 111) = 0.074, p = .786. In conclusion, an additional cognitive task during the postural balance task had a detrimental effect on various postural balance parameters, leading to increased DTC in terms of total sway area, mediolateral dispersion, and prolonged CRT in individuals with ID.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"1-16"},"PeriodicalIF":0.9,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141789653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study of the Effects of Motor Experience on Neuromuscular Control Strategies During Sprint Starts. 短跑起跑时运动经验对神经肌肉控制策略影响的研究

IF 0.9 4区医学

Motor Control Pub Date : 2024-05-06 Print Date: 2024-07-01 DOI: 10.1123/mc.2023-0149

Zhengye Pan, Lushuai Liu, Yuan Sun, Yunchao Ma

引用次数: 0

Response of Knee Joint Biomechanics to Landing Under Internal and External Focus of Attention in Female Volleyball Players. 女排运动员在内外注意力集中情况下膝关节生物力学对着地的反应

IF 0.9 4区医学

Motor Control Pub Date : 2024-05-02 Print Date: 2024-07-01 DOI: 10.1123/mc.2023-0151

Lukáš Slovák, David Zahradník, William M Land, Javad Sarvestan, Joseph Hamill, Reza Abdollahipour

{"title":"Response of Knee Joint Biomechanics to Landing Under Internal and External Focus of Attention in Female Volleyball Players.","authors":"Lukáš Slovák, David Zahradník, William M Land, Javad Sarvestan, Joseph Hamill, Reza Abdollahipour","doi":"10.1123/mc.2023-0151","DOIUrl":"10.1123/mc.2023-0151","url":null,"abstract":"The aim of this study was to examine the effect of attentional focus instructions on the biomechanical variables associated with the risk of anterior cruciate ligament injury of the knee joint during a drop landing task using a time series analysis. Ten female volleyball players (age: 20.4 ± 0.8 years, height: 169.7 ± 7.1 cm, mass: 57.6 ± 3.1 kg, experience: 6.3 ± 0.8 years) performed landings from a 50 cm height under three different attentional focus conditions: (1) external focus (focus on landing as soft as possible), (2) internal focus (focus on bending your knees when you land), and (3) control (no-focus instruction). Statistical parameter mapping in the sagittal plane during the crucial first 30% of landing time showed a significant effect of attentional focus instructions. Despite the similarity in landing performance across foci instructions, adopting an external focus instruction promoted reduced vertical ground reaction force and lower sagittal flexion moment during the first 30% of execution time compared to internal focus, suggesting reduced knee loading. Therefore, adopting an external focus of attention was suggested to reduce most biomechanical risk variables in the sagittal plane associated with anterior cruciate ligament injuries, compared to internal focus and control condition. No significant differences were found in the frontal and horizontal planes between the conditions during this crucial interval.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"341-361"},"PeriodicalIF":0.9,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140873230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acute Effect of Video Feedback on Self-Regulation and Proprioceptive Control of Standing Back Tuck Somersault in the Absence of Vision. 视频反馈对无视觉情况下立定后翻的自我调节和运动感觉控制的急性影响。

IF 0.9 4区医学

Motor Control Pub Date : 2024-03-12 Print Date: 2024-07-01 DOI: 10.1123/mc.2023-0046

Nour Mohamed Abahnini, Khemais Abahnini, Bessem Mkaouer

{"title":"Acute Effect of Video Feedback on Self-Regulation and Proprioceptive Control of Standing Back Tuck Somersault in the Absence of Vision.","authors":"Nour Mohamed Abahnini, Khemais Abahnini, Bessem Mkaouer","doi":"10.1123/mc.2023-0046","DOIUrl":"10.1123/mc.2023-0046","url":null,"abstract":"The purpose of this study was to assess the immediate effect of video feedback on the regulation and control of the standing back tuck somersault in the absence of vision. Two groups of male parkour athletes performed the standing back tuck somersault under both open and closed eyes conditions. The first group received video feedback, while the second group received verbal feedback. Concurrent analysis, including kinetic data from a force plate (Kistler Quattro-Jump) and kinematic data in two-dimensional by Kinovea freeware, was employed for motion and technical performance analysis. The results indicate that the loss of vision during the standing back tuck somersault affected only the take-off and ungrouping angle, as well as the vertical velocity and displacement. These effects were consistent regardless of the type of feedback provided (i.e., video feedback or verbal feedback). Furthermore, a significant Vision × Feedback interaction was observed at the level of technical performance. This suggests that the use of video feedback enabled the parkour athletes to maintain a high level of technical performance both with and without vision (i.e., 13.56 vs. 13.00 points, respectively, p > .05 and d = 2.233). However, the verbal feedback group technical performance declined significantly under the no-vision condition compared with the vision condition (13.14 vs. 10.25 points, respectively, with and without vision, p < .001 and d = 2.382). We concluded that when the movement is proprioceptively controlled (i.e., without vision), the video feedback enables the athletes to globally assess the technical deficiencies arising from the lack of vision and to correct them. These findings are discussed based on parkour athletes' ability to evaluate the kinematic parameters of the movement.","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"241-261"},"PeriodicalIF":0.9,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140068800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0