Journal of Electromyography and Kinesiology最新文献_第2页

Validation of proprioception measures of the lumbar spine 腰椎本体感觉测量的验证

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-21 DOI: 10.1016/j.jelekin.2024.102924

{"title":"Validation of proprioception measures of the lumbar spine","authors":"","doi":"10.1016/j.jelekin.2024.102924","DOIUrl":"10.1016/j.jelekin.2024.102924","url":null,"abstract":"<div><h3>Background</h3><p>To better personalize treatment and monitor recovery of individuals with low back pain, objective tests of sensorimotor functions, such as lumbar proprioception, must be selected based on their reliability and validity. The primary objective of this study was to test the concurrent validity of three measures of lumbar proprioception.</p></div><div><h3>Methods</h3><p>Thirty-one participants performed three lumbar proprioception tests (motion perception threshold, active and passive joint positioning sense), a whole-body mobility and balance (time up-and-go) and two trunk-specific postural control (threshold of stability and sensor-based sway measures) tests.</p></div><div><h3>Results</h3><p>Only the motion perception threshold proprioception test showed some validity, correlating with the trunk-specific postural control tests [r range (positive values): 0.37 to 0.60]. The three lumbar proprioception measures were not correlated to each other. The threshold of stability measure was correlated with the time up-and-go (r = 0.37) and trunk-specific (sensor-based sway measures) postural control [r range (positive values): 0.48 to 0.77] tests.</p></div><div><h3>Conclusion</h3><p>The present study generated three original findings. Only the motion perception threshold proprioception test demonstrated its concurrent validity. In fact, the three lumbar proprioception tests performed in the present study were not correlated to each other, thus assessing different constructs. Finally, the threshold of stability protocol was validated against other tests. These findings will help in selecting the most appropriate lumbar proprioception measures to study the effects of exercise treatments in patients with back pain.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049957","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

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-21 DOI: 10.1016/j.jelekin.2024.102923

{"title":"Pain-related threat and coordination in adults with chronic low back pain during a lifting task: A cross-sectional study","authors":"","doi":"10.1016/j.jelekin.2024.102923","DOIUrl":"10.1016/j.jelekin.2024.102923","url":null,"abstract":"<div><h3>Objectives</h3><p>People with low back pain (LBP) exhibit altered coordination, possibly indicating guarded movement. The connection between these changes and pain-related threat remains unclear. We aimed to determine if pain-related threat was related to spinal coordination and variability, during a lifting task, in people with chronic LBP.</p></div><div><h3>Methods</h3><p>Participants were adults with chronic LBP (n = 47). Upper lumbar, lower lumbar, and hipkinematics were measured during 10crate lifting/lowering repetitions. Coordination and variability of the Hip-Lower Lumbar, and Lower Lumbar-Upper Lumbar joint pairs were calculated. Pain-related threat was measured using the Tampa Scale for Kinesiophobia, the Pain Catastrophizing Scale, and task-specific fear. Linear regression analyses tested the relationship between pain-related threat and coordination.</p></div><div><h3>Results</h3><p>Adding catastrophizing to our base model (sex) explained variance in Hip-Lower lumbar coordination (r<sup>2</sup> change = 0.125, p = 0.013). General and task specific measures of fear were unrelated to coordination and variability at both joint pairs (r<sup>2</sup> change < 0.064, p > 0.05). Exploratory t-tests revealed subgroups aligned with phenotypes of “tight” and “loose” control, where “tight” control was characterized by greater catastrophizing and disability.</p></div><div><h3>Conclusion</h3><p>Pain catastrophizing, but not measures of fear, was related to more in-phase (“tight”) Hip-Lower Lumbar coordination during lifting/lowering. Considering this relationship based on subgroups may add clarity.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000671/pdfft?md5=1f79ec1395371c1c7e21efc6330c7417&pid=1-s2.0-S1050641124000671-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142087608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the contribution of different upper limb degrees of freedom to an unconstrained shoulder proprioception task 评估不同上肢自由度对无约束肩部本体感觉任务的贡献

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-20 DOI: 10.1016/j.jelekin.2024.102920

{"title":"Assessing the contribution of different upper limb degrees of freedom to an unconstrained shoulder proprioception task","authors":"","doi":"10.1016/j.jelekin.2024.102920","DOIUrl":"10.1016/j.jelekin.2024.102920","url":null,"abstract":"<div><p>For the purpose of testing shoulder joint proprioception while controlling for axioscapular muscle recruitment, a novel shoulder thoracohumeral (TH) rotation joint position sense (JPS) measurement device was designed. This device was intended to measure shoulder TH rotation, while also implicitly constraining other upper limb degrees of freedom (DOF) and minimizing cutaneous sensation. The purpose of this study was to determine whether joint motion aside from shoulder TH rotation is being captured by the shoulder JPS measurement device. Upper limb kinematics were collected from 32 participants during joint angle matching trials using the shoulder JPS measurement device. Step wise multiple regression revealed that shoulder TH rotation (β-Humeral Rotation = 0.409, p < 0.001), and wrist deviation (β-Wrist Deviation = 0.104, p = 0.008) both contributed a significant unique variance in the prediction of shoulder JPS measurement device rotation. Findings suggest that seated, unconstrained shoulder TH rotation JPS testing protocols in literature may be confounded by contributions from joints both proximal and distal to the shoulder. Researchers should be aware of the limitations of both constrained and unconstrained shoulder TH rotation JPS testing protocols.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000646/pdfft?md5=3ad9ba1b0b1c1b8c06029543e15e30d5&pid=1-s2.0-S1050641124000646-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduced variability of erector spinae activity in people with chronic low back pain when performing a functional 3D lifting task 慢性腰痛患者在执行功能性 3D 移位任务时竖脊肌活动的可变性降低

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-07-26 DOI: 10.1016/j.jelekin.2024.102917

{"title":"Reduced variability of erector spinae activity in people with chronic low back pain when performing a functional 3D lifting task","authors":"","doi":"10.1016/j.jelekin.2024.102917","DOIUrl":"10.1016/j.jelekin.2024.102917","url":null,"abstract":"<div><h3>Background</h3><p>Chronic low back pain (LBP) is a leading cause of disability, which is exacerbated in some by repeated lifting. Electromyography (EMG) assessments of isolated erector spinae (ES) regions during lifting identified conflicting results. Here, high-density EMG comprehensively assesses the lumbar and thoracolumbar ES activity in people with and without LBP performing a multiplanar lifting task.</p></div><div><h3>Methods</h3><p>Four high-density EMG grids (two bilaterally) and reflective markers were affixed over the ES and trunk to record muscle activity and trunk kinematics respectively. The task involved cyclical lifting of a 5 kg box for ∼7 min from a central shelf to five peripheral shelves, returning to the first between movements, while monitoring perceived exertion.</p></div><div><h3>Results</h3><p>Fourteen LBP (26.9 ± 11.1 years) and 15 control participants (32.1 ± 14.6 years) completed the study. LBP participants used a strategy characterised by less diffuse and more cranially-focussed ES activity (P < 0.05). LBP participants also exhibited less variation in ES activity distribution between sides during movements distal to the central shelf (P < 0.05). There were few consistent differences in kinematics, but LBP participants reported greater exertion (P < 0.05).</p></div><div><h3>Conclusion</h3><p>In the presence of mild LBP, participants used a less variable motor strategy, with less diffuse and more cranially-focussed ES activity; this motor strategy occurred concomitantly with increased exertion while completing this dynamic task.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000610/pdfft?md5=d1c84c5843388f36b5d9e927577f57e7&pid=1-s2.0-S1050641124000610-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of stabilizing feedback control of walking: A tutorial 评估行走的稳定反馈控制：教程。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-22 DOI: 10.1016/j.jelekin.2024.102915

Jaap H. van Dieën , Sjoerd M. Bruijn , Maarten Afschrift

{"title":"Assessment of stabilizing feedback control of walking: A tutorial","authors":"Jaap H. van Dieën , Sjoerd M. Bruijn , Maarten Afschrift","doi":"10.1016/j.jelekin.2024.102915","DOIUrl":"10.1016/j.jelekin.2024.102915","url":null,"abstract":"<div><p>Walking without falling requires stabilization of the trajectory of the body center of mass relative to the base of support. Model studies suggest that this requires active, feedback control, i.e., the nervous system must process sensory information on the state of the body to generate descending motor commands to the muscles to stabilize walking, especially in the mediolateral direction. Stabilization of bipedal gait is challenging and can be impaired in older and diseased individuals. In this tutorial, we illustrate how gait analysis can be used to assess the stabilizing feedback control of gait. We present methods ranging from those that require limited input data (e.g. position data of markers placed on the feet and pelvis only) to those that require full-body kinematics and electromyography. Analyses range from simple kinematics analyses to inverse dynamics. These methods assess stabilizing feedback control of human walking at three levels: 1) the level of center of mass movement and horizontal ground reaction forces, 2) the level of center of mass movement and foot placement and 3) the level of center of mass movement and the joint moments or muscle activity. We show how these can be calculated and provide a GitHub repository (<span>https://github.com/VU-HMS/Tutorial-stabilizing-walking</span><svg><path></path></svg>) which contains open access Matlab and Python code to calculate these. Finally, we discuss what information on feedback control can be learned from each of these.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000592/pdfft?md5=016bf7ad4ac804075bdcfc089e452804&pid=1-s2.0-S1050641124000592-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141473049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a novel technique to insert intramuscular electromyography electrodes into the deep intrinsic foot muscles via the dorsum of the foot 开发一种新型技术，通过足背将肌电图电极插入足部深层内在肌肉。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-22 DOI: 10.1016/j.jelekin.2024.102914

Natalie J. Collins , Sauro E. Salomoni , Edith L. Elgueta Cancino , Kylie Tucker , Paul W. Hodges

{"title":"Development of a novel technique to insert intramuscular electromyography electrodes into the deep intrinsic foot muscles via the dorsum of the foot","authors":"Natalie J. Collins , Sauro E. Salomoni , Edith L. Elgueta Cancino , Kylie Tucker , Paul W. Hodges","doi":"10.1016/j.jelekin.2024.102914","DOIUrl":"10.1016/j.jelekin.2024.102914","url":null,"abstract":"<div><p>This study aimed to develop an insertion technique for intramuscular EMG recording of the oblique head of adductor hallucis (AddH) and first dorsal interosseous (FDI) muscles in humans via the dorsum of the foot, and report feasibility of intramuscular EMG data acquisition during walking in shoes. In eight individuals without musculoskeletal pain or injury (5 males; 32 ± 8 years), intramuscular electrodes were inserted into AddH (oblique head) and FDI through the right foot’s dorsum (between metatarsals I-II) with ultrasound guidance. The ultrasound transducer was positioned on the plantar surface. Intramuscular EMG was also recorded from abductor hallucis, tibialis posterior, flexor digitorum longus and peroneus longus. Participants performed six overground walking trials wearing modified shoes, and rated pain associated with the intramuscular electrodes during walking (numerical rating scale, 0–10). High-quality EMG recordings were obtained from intrinsic and extrinsic foot muscles. Analyses of power spectral densities indicated that movement artefacts commonly observed during gait were removed by filtering. Pain associated with AddH/FDI electrodes during walking was low (median[IQR] 1[2]; range 0–4) and similar to other sites. Findings demonstrate that intramuscular EMG recording from AddH (oblique head) and FDI using this insertion technique is feasible and associated with minimal pain when walking in shoes.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000580/pdfft?md5=8b79922c25f379efb31ba38e194ad54a&pid=1-s2.0-S1050641124000580-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141473050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling cEMG-wet sEMG Correlation Dynamics: Investigating Influential Factors 揭示 cEMG 与湿式 sEMG 的相关动态：调查影响因素。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-19 DOI: 10.1016/j.jelekin.2024.102912

Md. Sazzad Hossain , Md. Johirul Islam , Md. Rezaul Islam

{"title":"Unraveling cEMG-wet sEMG Correlation Dynamics: Investigating Influential Factors","authors":"Md. Sazzad Hossain , Md. Johirul Islam , Md. Rezaul Islam","doi":"10.1016/j.jelekin.2024.102912","DOIUrl":"10.1016/j.jelekin.2024.102912","url":null,"abstract":"<div><p>The electromyography (EMG) signal provides insight into neuromuscular activity which is used in medical and technological fields. Traditional needle electrodes and surface electrodes have several drawbacks making them less suitable for portable and long-term use. In contrast, emerging capacitive electrodes offer promising features over the existing electrodes. Yet, the full potential of capacitive electrodes remains untapped due to the lack of comprehensive design optimization for consistently reliable signal quality. This study highlights the complex interplay of factors influencing correlation in capacitive EMG (cEMG) and wet surface EMG (wet sEMG) signals. The study emphasizes the importance of the surface area of capacitive electrodes, muscle force, preprocessing, and sampling frequency in understanding and improving the correlation between cEMG and wet sEMG signals, providing valuable insights for future research and applications in the field. The study reveals that the electrode area has no significant effect on the correlation. However, the correlation significantly depends on the muscle force. In addition, removing artifacts from the cEMG signal increases the correlation, especially for lower force where artifacts are significant. Again, oversampling the EMG signal above 800 Hz does not have any impact on increasing the correlation but the correlation decreases with higher inter-electrode distance (IED). In this research, the highest correlation of 82.89% (normalized-91.62%) between cEMG and sEMG has been achieved for high muscle force with a plate area of 4 cm<sup>2</sup>. Therefore, the capacitive electrode can be an alternative for EMG signal acquisition.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141460914","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

sEMG as complementary tool for VFSS: A synchronized study in patients with neurogenic oropharyngeal dysphagia 作为 VFSS 辅助工具的 sEMG：对神经源性口咽吞咽困难患者的同步研究

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-18 DOI: 10.1016/j.jelekin.2024.102913

Laura V. Suarez-Patiño , Sebastian Roldan-Vasco , Juan Camilo Suarez-Escudero , Andres Orozco-Duque , Estefania Perez-Giraldo

{"title":"sEMG as complementary tool for VFSS: A synchronized study in patients with neurogenic oropharyngeal dysphagia","authors":"Laura V. Suarez-Patiño , Sebastian Roldan-Vasco , Juan Camilo Suarez-Escudero , Andres Orozco-Duque , Estefania Perez-Giraldo","doi":"10.1016/j.jelekin.2024.102913","DOIUrl":"https://doi.org/10.1016/j.jelekin.2024.102913","url":null,"abstract":"<div><p>The neurogenic oropharyngeal dysphagia is a prevalent functional swallowing disorder resulting from neurological causes. The conventional diagnosis involves ionizing radiation in Videofluoroscopy Swallowing Studies (VFSS). Surface electromyography (sEMG) offers a non-invasive alternative by recording muscle activity. This research compares bolus passage timing through anatomical structures using VFSS and sEMG-related activation times. Fifty confirmed oropharyngeal dysphagia patients underwent synchronized VFSS and sEMG, evaluating muscle groups during cracker and fluid ingestion. sEMG revealed activation patterns in masseters, suprahyoid, and infrahyoid muscles, occurring before bolus passage through the mandibular line and concluding near the upper esophageal sphincter complex. sEMG identified differences in dysphagia severity (EAT-10 score), age, and diagnosis, contrasting VFSS results. Results indicate potential complementarity between sEMG and VFSS for dysphagia screening, diagnosis, and monitoring.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141606448","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

Cumulative creep response of viscoelastic lumbar tissue as a function of work-rest schedule 粘弹性腰椎组织的累积蠕变响应与作息时间的关系

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-18 DOI: 10.1016/j.jelekin.2024.102916

Sang Hyeon Kang , Gary A. Mirka

{"title":"Cumulative creep response of viscoelastic lumbar tissue as a function of work-rest schedule","authors":"Sang Hyeon Kang , Gary A. Mirka","doi":"10.1016/j.jelekin.2024.102916","DOIUrl":"https://doi.org/10.1016/j.jelekin.2024.102916","url":null,"abstract":"<div><p>We explore the effect of stress-recovery schedule on the cumulative creep response of lumbar tissues. Twelve participants performed a 48-minute protocol that consisted of 12 min of full trunk flexion and 36 min of upright standing. Two stress-recovery (work-rest) schedules were considered: a) three minutes of full trunk flexion followed by twelve minutes of upright standing (3:12), and b) one minute of full trunk flexion followed by four minutes of upright standing (1:4). Lumbar kinematics and EMG activity of erector spinae muscles were collected. Cumulative creep deformation was explored by considering the changes in peak lumbar flexion angles during full flexion and changes in the angles of flexion-relaxation (EMG-off) of the lumbar extensor musculature after the 48-minute protocol. The results of time-dependent lumbar flexion angle during full flexion revealed a noticeable creep response in both work-rest schedules, but the cumulative creep response was significantly greater in the 3:12 schedule (Δ3.5°) than in the 1:4 schedule (Δ1.6°). Similarly, the change in the EMG-off lumbar flexion angle in the 3:12 schedule was significantly greater than in the 1:4 schedule (Δ2.5° vs −Δ0.2°, respectively). These results indicate that the passive lumbar tissues recover their force producing capability more rapidly with shorter cycle times.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141438940","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

Persistent inward currents in tibialis anterior motoneurons can be reliably estimated within the same session 胫骨前运动神经元的持续性内向电流可在同一疗程内可靠估计

IF 2.5 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-06-09 DOI: 10.1016/j.jelekin.2024.102911

Thomas Lapole , Ricardo N.O. Mesquita , Stéphane Baudry , Robin Souron , Eleanor K. O’Brien , Callum G. Brownstein , Vianney Rozand

{"title":"Persistent inward currents in tibialis anterior motoneurons can be reliably estimated within the same session","authors":"Thomas Lapole , Ricardo N.O. Mesquita , Stéphane Baudry , Robin Souron , Eleanor K. O’Brien , Callum G. Brownstein , Vianney Rozand","doi":"10.1016/j.jelekin.2024.102911","DOIUrl":"https://doi.org/10.1016/j.jelekin.2024.102911","url":null,"abstract":"<div><p>The response of spinal motoneurons to synaptic input greatly depends on the activation of persistent inward currents (PICs), the contribution of which can be estimated through the paired motor unit technique. Yet, the intra-session test–retest reliability of this measurement remains to be fully established. Twenty males performed isometric triangular dorsiflexion contractions to 20 and 50 % of maximal torque at baseline and after a 15-min resting period. High-density electromyographic signals (HD-EMG) of the tibialis anterior were recorded with a 64-electrode matrix. HD-EMG signals were decomposed, and motor units tracked across time points to estimate the contribution of PICs to motoneuron firing through quantification of motor unit recruitment-derecruitment hysteresis (ΔF). A good intraclass correlation coefficient (ICC = 0.75 [0.63, 0.83]) and a large repeated measures correlation coefficient (r<sub>rm</sub> = 0.65 [0.49, 0.77]; p < 0.001) were found between ΔF values obtained at both time points for 20 % MVC ramps. For 50 % MVC ramps, a good ICC (0.77 [0.65, 0.85]) and a very large repeated measures correlation coefficient (r<sub>rm</sub> = 0.73 [0.63, 0.80]; p < 0.001) were observed. Our data suggest that ΔF scores can be reliably investigated in tibialis anterior motor units during both low- and moderate-intensity contractions within a single experimental session.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000555/pdfft?md5=2f55835d681f866bbeab8e22254d00f1&pid=1-s2.0-S1050641124000555-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141328582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0