Motor Control最新文献

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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
{"title":"A Study of the Effects of Motor Experience on Neuromuscular Control Strategies During Sprint Starts.","authors":"Zhengye Pan, Lushuai Liu, Yuan Sun, Yunchao Ma","doi":"10.1123/mc.2023-0149","DOIUrl":"10.1123/mc.2023-0149","url":null,"abstract":"<p><p>Much of the current research on sprint start has attempted to analyze the biomechanical characteristics of elite athletes to provide guidance on the training of sprint technique, with less attention paid to the effects of motor experience gained from long-term training on neuromuscular control characteristics. The present study attempted to investigate the effect of motor experience on the modular organization of the neuromuscular system during starting, based on he clarification of the characteristics of muscle synergies during starting. It was found that exercise experience did not promote an increase in the number of synergies but rather a more focused timing of the activation of each synergy, allowing athletes to quickly complete the postural transition from crouching to running during the starting.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"362-376"},"PeriodicalIF":0.9,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140869200","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
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":"<p><p>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.</p>","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":"<p><p>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.</p>","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
Differences in Lower-Extremity Joint Coordination During Two Landing Phases of a Drop Jump Task. 落体跳跃任务中两个着地阶段下肢关节协调性的差异。
IF 0.9 4区 医学
Motor Control Pub Date : 2024-03-08 Print Date: 2024-07-01 DOI: 10.1123/mc.2023-0121
JiaWei Wang, Ye Liu
{"title":"Differences in Lower-Extremity Joint Coordination During Two Landing Phases of a Drop Jump Task.","authors":"JiaWei Wang, Ye Liu","doi":"10.1123/mc.2023-0121","DOIUrl":"10.1123/mc.2023-0121","url":null,"abstract":"<p><p>The aim of the present study was to compare the differences in joint coordination patterns and variability in the lower extremity between the first and second landing phases of the drop jump. Eighteen resistance-trained men (age: 22.8 ± 1.8 years) performed drop jumps from a height of 0.40 m. An eight-camera motion capture system was utilized to record kinematic trajectories. Modified vector coding technique and circular statistics were used to determine the coordination pattern and variability of the following joint couples during the first and second landings: hip frontal-knee frontal (HfKf), hip sagittal-knee frontal (HsKf), hip sagittal-knee sagittal (HsKs), knee frontal-ankle frontal (KfAf), knee sagittal-ankle frontal (KsAf), and knee sagittal-ankle sagittal (KsAs). Statistical differences in the distribution frequencies of coupling angles and variability between the dominant and nondominant limbs across the two landing phases were compared using two-way repeated analysis of variance and Wilcoxon rank-sum tests. During the second landing phase, the proportion of HsKs, KfAf, and KsAs showing in-phase coordination was reduced but the proportion of KfAf and KsAs showing proximal joint (knee) coordination was increased (p < .05). Significant differences in bilateral asymmetry were observed only for the HfKf and KfAf patients (p < .05). HsKs, KfAf, and KsAf varied considerably during the second landing phase (p < .05). Joint coordination patterns during the second landing phase of the drop jump differed considerably from those during the first landing phase, thereby increasing the risk of knee and ankle injuries.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"262-275"},"PeriodicalIF":0.9,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140068801","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
Quantifying Human Gait Symmetry During Blindfolded Treadmill Walking. 量化蒙眼跑步机行走时的人体步态对称性
IF 0.9 4区 医学
Motor Control Pub Date : 2024-02-24 Print Date: 2024-07-01 DOI: 10.1123/mc.2023-0028
Otella Shoja, Masoumeh Shojaei, Hamidollah Hassanlouei, Farzad Towhidkhah, Lei Zhang
{"title":"Quantifying Human Gait Symmetry During Blindfolded Treadmill Walking.","authors":"Otella Shoja, Masoumeh Shojaei, Hamidollah Hassanlouei, Farzad Towhidkhah, Lei Zhang","doi":"10.1123/mc.2023-0028","DOIUrl":"10.1123/mc.2023-0028","url":null,"abstract":"<p><p>Bilateral gait symmetry is an essential requirement for normal walking since asymmetric gait patterns increase the risk of falls and injuries. While human gait control heavily relies on the contribution of sensory inputs, the role of sensory systems in producing symmetric gait has remained unclear. This study evaluated the influence of vision as a dominant sensory system on symmetric gait production. Ten healthy adults performed treadmill walking with and without vision. Twenty-two gait parameters including ground reaction forces, joint range of motion, and other spatial-temporal gait variables were evaluated to quantify gait symmetry and compared between both visual conditions. Visual block caused increased asymmetry in most parameters of ground reaction force, however mainly in the vertical direction. When vision was blocked, symmetry of the ankle and knee joint range of motion decreased, but this change did not occur in the hip joint. Stance and swing time symmetry decreased during no-vision walking while no significant difference was found for step length symmetry between the two conditions. This study provides a comprehensive analysis to reveal how the visual system influences bilateral gait symmetry and highlights the important role of vision in gait control. This approach could be applied to investigate how vision alters gait symmetry in patients with disorders to help better understand the role of vision in pathological gaits.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"225-240"},"PeriodicalIF":0.9,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139974232","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
High-Intensity Forward-Backward Plyometrics After the Warm-Up Entail Better Sprint and Change-of-Direction Performance Than Low-Intensity Side-to-Side Plyometrics. 热身后的高强度前后分层训练比低强度左右分层训练有更好的冲刺和转向表现。
IF 1.1 4区 医学
Motor Control Pub Date : 2023-11-06 Print Date: 2024-01-01 DOI: 10.1123/mc.2023-0050
Karim Ben Ayed, Raouf Hammami, Javier Gene-Morales, Amira Ajailia, Hanen Werfelli, Haithem Rebai, Pablo Jiménez-Martínez, Jorge Flandez, Juan C Colado
{"title":"High-Intensity Forward-Backward Plyometrics After the Warm-Up Entail Better Sprint and Change-of-Direction Performance Than Low-Intensity Side-to-Side Plyometrics.","authors":"Karim Ben Ayed, Raouf Hammami, Javier Gene-Morales, Amira Ajailia, Hanen Werfelli, Haithem Rebai, Pablo Jiménez-Martínez, Jorge Flandez, Juan C Colado","doi":"10.1123/mc.2023-0050","DOIUrl":"10.1123/mc.2023-0050","url":null,"abstract":"<p><p>This study aimed to determine the acute effects of high-intensity forward-backward and low-intensity side-to-side plyometric jumps performed following the warm-up on sprint (5, 10, and 15 m) and change-of-direction (COD) (T-half test and repeated T-half tests) performance in youth volleyball players. After a familiarization week, 30 male volleyball players (age = 12.04 ± 1.03 years) performed three randomized conditions (no-plyometrics, high-intensity plyometrics, and low-intensity plyometrics) in three sessions. In a within-subject design, three sets of six repetitions of forward-backward 30-cm hurdle jumps (high-intensity) and side-to-side 20-cm hurdle jumps (low-intensity) were completed. Sprint and COD were tested after each of the conditions with a 2-min rest. A significant effect of the plyometric condition was observed on sprint (p < .001, ηp2 range: .56-.70) and COD (p < .01, ηp2=.24), but not on repeated COD. More specifically, the high-intensity plyometric condition exhibited significantly better results compared with the low-intensity plyometric (Cohen's d range: 0.73-1.21) and control conditions (Cohen's d range: 0.91-2.21). Due to the importance of speed and COD in volleyball, these results suggest that young volleyball players may benefit from high-intensity forward-backward plyometric protocols following the warm-up to improve subsequent performance.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"63-77"},"PeriodicalIF":1.1,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71488119","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 Influence of a Warm-Up on Vigilance in University Students. 热身对大学生警惕性的影响。
IF 1.1 4区 医学
Motor Control Pub Date : 2023-11-06 Print Date: 2024-01-01 DOI: 10.1123/mc.2023-0027
Francisco Tomás González-Fernández, Alfonso Castillo-Rodriguez, Sixto González-Víllora, David Hortigüela-Alcalá
{"title":"The Influence of a Warm-Up on Vigilance in University Students.","authors":"Francisco Tomás González-Fernández, Alfonso Castillo-Rodriguez, Sixto González-Víllora, David Hortigüela-Alcalá","doi":"10.1123/mc.2023-0027","DOIUrl":"10.1123/mc.2023-0027","url":null,"abstract":"<p><p>The present study aimed to analyze the effects of conducting a warm-up (WC) or not (WWC) on students of the Science Degree in Physical Activity and Sport before starting a practical class. Thirty-two students of the Science Degree in Physical Activity and Sport (age: 22.38 ± 1.81 years; height: 176.09 ± 8.52 cm; weight: 22.38 ± 1.81 kg; body fat: 25.17 ± 3.20%) participated in a counterbalanced cross-sectional study in which three conditions were tested: (a) basal lineal, (b) WC, and (c) WWC. Participants recorded longer times (worse performance) in the Illinois dribbling test (basal lineal condition [20.17 ± 1.35], WWC [20.13 ± 1.37], and WC [19.32 ± 1.35]) and the Psychomotor Vigilance Task test (basal lineal condition [397.88 ± 75.98 ms]; WWC [412.19 ± 91.39 ms], and WC [368.53 ± 68.65 ms]). The warm-up prior to physical activity classes had positive effects on vigilance linked to executive functioning, and physical performance. In this sense, more research on different types of warm-up may be in order to contrast them with each other, as well as to carry out attention measurements according to the content to be imparted after the warm-ups. The present study represents a big opportunity for all physical education teachers due to warm-up is a crucial aspect that occurs in all practical sessions, also linked to the attention processes and motivational factors of the students.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"78-90"},"PeriodicalIF":1.1,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71488121","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 Brace Use on Upper-Extremity Functionality in Adolescent Individuals With Idiopathic Scoliosis: A Cross-Sectional Study. 青少年特发性脊柱侧凸患者使用支具对上肢功能的急性影响:一项横断面研究
IF 1.1 4区 医学
Motor Control Pub Date : 2023-10-24 Print Date: 2024-01-01 DOI: 10.1123/mc.2023-0040
Kamil Yilmaz, Fatih Celik, Bayram Sonmez Unuvar
{"title":"Acute Effect of Brace Use on Upper-Extremity Functionality in Adolescent Individuals With Idiopathic Scoliosis: A Cross-Sectional Study.","authors":"Kamil Yilmaz, Fatih Celik, Bayram Sonmez Unuvar","doi":"10.1123/mc.2023-0040","DOIUrl":"10.1123/mc.2023-0040","url":null,"abstract":"<p><p>It is well known that scoliosis adversely affects the functions of the upper extremities. However, the acute effect of rigid braces, which are widely used in the conservative treatment of scoliosis, on upper-extremity functionality remains unknown. The aim of this study was to investigate the acute effect of a rigid thoracolumbosacral brace use on upper-extremity functionality in individuals with adolescent idiopathic scoliosis (AIS). Thirty-eight individuals diagnosed with AIS participated in this cross-sectional study, with a mean age of 14.55 ± 1.90 years and a range of 10-18 years. The upper-extremity functionality was assessed using the Nine-Hole Peg Test and handgrip strength, with assessments conducted under both in-brace (with their own braces) and out-of-brace conditions. Nine-Hole Peg Test durations of the AIS patients for the nondominant side were significantly lower for in-brace conditions compared with out-of-brace conditions (p = .049, effect size = 0.136). The grip strength of the nondominant side was significantly higher for in-brace conditions compared with out-of-brace conditions (p = .025, effect size = 0.365). A weak negative correlation was found between the degree of curvature and the grip strength of the dominant side for in-brace conditions (r = -.323, p = .048). It was concluded that the brace had a positive effect on upper-extremity functionality on the nondominant side by both shortening the Nine-Hole Peg Test duration and increasing grip strength. In AIS patients, the brace may positively affect daily living by improving the functionality of the nondominant extremity.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"50-62"},"PeriodicalIF":1.1,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50159160","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 an Overhead External Load Lifting and Lowering on Dynamic Postural Control in Subgroups of Low Back Pain. 顶置外负荷提升和降低对腰痛亚组动态姿势控制的影响。
IF 1.1 4区 医学
Motor Control Pub Date : 2023-10-24 Print Date: 2024-01-01 DOI: 10.1123/mc.2023-0035
Majid Shahbazi, Javad Sarrafzadeh, Ismail Ebrahimi Takamjani, Hossein Negahban
{"title":"The Effect of an Overhead External Load Lifting and Lowering on Dynamic Postural Control in Subgroups of Low Back Pain.","authors":"Majid Shahbazi, Javad Sarrafzadeh, Ismail Ebrahimi Takamjani, Hossein Negahban","doi":"10.1123/mc.2023-0035","DOIUrl":"10.1123/mc.2023-0035","url":null,"abstract":"<p><strong>Background: </strong>Understanding postural control in low back pain (LBP) subgroups can help develop targeted interventions to improve postural control. The studies on this topic are limited. Therefore, the primary purpose of this study was to compare the postural control of LBP subgroups with healthy individuals during overhead load lifting and lowering.</p><p><strong>Methods: </strong>In this cross-sectional study, the participants were 52 with LBP and 20 healthy. The LBP patients were classified based on the O'Sullivan classification system into 21 flexion patterns and 31 active extension patterns. The participants lifted the box from their waists to their overheads and lowered it to their waists. Changes in postural control parameters were measured with a force plate system.</p><p><strong>Results: </strong>The results of the analysis of variance showed that during load lifting, the mediolateral phase plane (p = .044) and the mean total velocity (p = .029) had significant differences between flexion patterns and healthy. Also, the load-lowering results showed that active extension patterns, compared with healthy, had significant differences in the anteroposterior-mediolateral phase plane (p = .042). The patients showed less postural sway than the healthy.</p><p><strong>Conclusions: </strong>The results in this work highlight the importance of identifying the homogenous subgroups in LBP and support the classification of heterogeneous LBP. Different subgroups exhibit different postural control behaviors. These behaviors can be due to the loading of various tissues during different tasks.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"15-28"},"PeriodicalIF":1.1,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50159162","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
Motor Transfer and Proactive Interference in Cycling With a Noncircular Chainring. 非圆链环自行车运动中的电机传递与主动干扰。
IF 1.1 4区 医学
Motor Control Pub Date : 2023-10-24 Print Date: 2024-01-01 DOI: 10.1123/mc.2023-0011
Thomas Haab, Peter Leinen, Stefan Panzer
{"title":"Motor Transfer and Proactive Interference in Cycling With a Noncircular Chainring.","authors":"Thomas Haab, Peter Leinen, Stefan Panzer","doi":"10.1123/mc.2023-0011","DOIUrl":"10.1123/mc.2023-0011","url":null,"abstract":"<p><p>Athletes must transfer their performance when changing equipment due to innovative developments in sports technology. This kind of transfer has received only moderate attention. The aim of this study was to examine whether a mechanical change in sports equipment disturbs an athlete's performance and affects biomechanical and neurophysiological parameters. Therefore, an experiment was conducted in which 36 participants in three groups pedaled at 70 rounds per minute on a cycling ergometer with a circular and a noncircular (NC) chainring. The dependent variables were the total variability of the cadence, torque effectiveness, and muscle cocontraction (electromyographic cocontraction) of four antagonistic acting muscle pairs. Data were recorded during an acquisition phase, a transfer phase, and a retention phase. The results revealed that practice on a circular chainring induces a positive transfer on the NC chainring for total variability without a proactive interference effect. Torque effectiveness did not change within or between groups during the acquisition, transfer, and retention phases. Torque effectiveness and electromyographic cocontraction were not affected when the chainrings were altered from Day 1 to Day 2. During the retention phase, electromyographic cocontraction was higher when using the NC chainring, but the difference was small in absolute terms. The results regarding transfer and proactive interference seem to be strongly dependent on the movement task and the change in sports equipment. Transfer from the circular to NC chainring indicates refined neuromuscular control and improved movement coordination.</p>","PeriodicalId":49795,"journal":{"name":"Motor Control","volume":" ","pages":"29-49"},"PeriodicalIF":1.1,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50159161","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
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