Journal of Electromyography and Kinesiology最新文献_第10页

High-density EMG reveals atypical spatial activation of the gastrocnemius during walking in adolescents with Cerebral Palsy 高密度肌电图显示脑瘫青少年行走时腓肠肌的非典型空间激活。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-09-20 DOI: 10.1016/j.jelekin.2024.102934

Maxwell Thurston , Mika Peltoniemi , Alessandra Giangrande , Ivan Vujaklija , Alberto Botter , Juha-Pekka Kulmala , Harri Piitulainen

{"title":"High-density EMG reveals atypical spatial activation of the gastrocnemius during walking in adolescents with Cerebral Palsy","authors":"Maxwell Thurston , Mika Peltoniemi , Alessandra Giangrande , Ivan Vujaklija , Alberto Botter , Juha-Pekka Kulmala , Harri Piitulainen","doi":"10.1016/j.jelekin.2024.102934","DOIUrl":"10.1016/j.jelekin.2024.102934","url":null,"abstract":"<div><div>Children with Cerebral Palsy (CP) exhibit less-selective, simplified muscle activation during gait due to injury of the developing brain. Abnormal motor unit recruitment, altered excitation-inhibition balance, and muscle morphological changes all affect the CP electromyogram. High-density surface electromyography (HDsEMG) has potential to reveal novel manifestations of CP neuromuscular pathology and functional deficits by assessing spatiotemporal details of myoelectric activity. We used HDsEMG to investigate spatial-EMG distribution and temporal-EMG complexity of gastrocnemius medialis (GM) muscle during treadmill walking in 11 adolescents with CP and 11 typically developed (TD) adolescents.</div><div>Our results reveal more-uniform spatial-EMG amplitude distribution across the GM in adolescents with CP, compared to distal emphasis in TD adolescents. More-uniform spatial-EMG was associated with stronger ankle co-contraction and spasticity. CP adolescents exhibited a non-significant trend towards elevated EMG-temporal complexity. Homogenous spatial distribution and disordered temporal evolution of myoelectric activity in CP suggests less-structured and desynchronized recruitment of GM motor units, in combination with muscle morphological changes. Using HDsEMG, we uncovered novel evidence of atypical spatiotemporal activation during gait in CP, opening paths towards deeper understanding of motor control deficits and better characterization of changes in muscular activation from interventions.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102934"},"PeriodicalIF":2.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142395570","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

Effects of biofeedback and strength training interventions on neck-shoulder sensory-motor responses among visual display unit users. A narrative review 生物反馈和力量训练干预对视觉显示器使用者颈肩感觉运动反应的影响。叙述性综述

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-09-20 DOI: 10.1016/j.jelekin.2024.102936

Pascal Madeleine , Grace P.Y. Szeto , Alberto Marcos Heredia-Rizo

{"title":"Effects of biofeedback and strength training interventions on neck-shoulder sensory-motor responses among visual display unit users. A narrative review","authors":"Pascal Madeleine , Grace P.Y. Szeto , Alberto Marcos Heredia-Rizo","doi":"10.1016/j.jelekin.2024.102936","DOIUrl":"10.1016/j.jelekin.2024.102936","url":null,"abstract":"<div><div>Workplace biofeedback and strength training interventions have been conducted to treat neck-shoulder pain among visual display unit users. Biofeedback has been given using surface electromyography, mechanomyography, oculometrics, and spinal posture to promote either muscle relaxation, muscle activation or change in posture. Strength training has been performed mostly using basic exercise equipment according to various progression principles. These two types of interventions would thus result in increased ability to cope with physical workload or improved individual resources. In this narrative review, we analyzed the design, methods, and results of the retrieved studies on neck-shoulder sensory-motor responses among visual display unit users. A few studies have reported both an immediate decrease in neck-shoulder pain and an improvement after the end of the intervention following biofeedback, often based on surface electromyography, and strength training interventions targeting the shoulder girdle. Biofeedback and strength training interventions can respectively modify ability to cope with physical workload and individual resources resulting in increased physical capacity among visual display unit users. The long-term effects and the applicability of these approaches remain to be demonstrated at workplace settings. Future studies could combine both modalities to increase versatility of the interventions.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102936"},"PeriodicalIF":2.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000804/pdfft?md5=c196347042d617b471f7f355c688e591&pid=1-s2.0-S1050641124000804-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315935","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

Less Pain, but no changes in maximal inclination angles during an overhead reach task following local anesthetic in patients with ongoing shoulder pain 局部麻醉后，持续肩痛患者在高空伸手任务中的疼痛减轻，但最大倾斜角度没有变化

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-09-08 DOI: 10.1016/j.jelekin.2024.102932

N.E. D’hondt , A.J.R. Leenen , H. Kiers , M.J.M. Hoozemans , T.D. Alta , M.P.J. van den Bekerom , M.P.J. van de Borne , M.P.J. van der List , H.E.J. Veeger

{"title":"Less Pain, but no changes in maximal inclination angles during an overhead reach task following local anesthetic in patients with ongoing shoulder pain","authors":"N.E. D’hondt , A.J.R. Leenen , H. Kiers , M.J.M. Hoozemans , T.D. Alta , M.P.J. van den Bekerom , M.P.J. van de Borne , M.P.J. van der List , H.E.J. Veeger","doi":"10.1016/j.jelekin.2024.102932","DOIUrl":"10.1016/j.jelekin.2024.102932","url":null,"abstract":"<div><p>This multicenter observational study aimed to assess how pain reduction, induced by local anesthesia, affects the relative angular contributions of the shoulder girdle and trunk to the maximal angular performance during a semi-constrained overhead reach task in patients with ongoing shoulder pain. Twenty-nine individuals (age 59.0 SD 12.8 years;16-male) with symptomatic shoulders were administered corticosteroid and lidocaine injections by their attending orthopedic surgeon. Immediately before and after the injections, participants reached for a target on the ceiling ten times as high as possible while their pain levels, shoulder, and trunk movements were recorded. The analysis revealed that there was a significant reduction in pain following the injections. However, there were no significant differences in maximum shoulder and trunk inclination angles between the pre- and post-injection conditions. Notably, there were slight but statistically significant alterations in humeroscapular kinematics during the initial phase of arm elevation following the injections. In conclusion, acute pain relief following local anesthetics is not associated with immediate alterations in maximum shoulder girdle and trunk inclination angles during a semi-constrained overhead reach task in patients with ongoing shoulder pain. However, there are signs of small alterations in humeroscapular kinematics during the initial phase of arm elevation.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102932"},"PeriodicalIF":2.0,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229568","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

Upper arm muscle activity is influenced by both forearm posture and wrist exertion direction during isometric wrist flexion and extension 在手腕等长屈伸过程中，上臂肌肉活动受前臂姿势和手腕用力方向的影响。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-30 DOI: 10.1016/j.jelekin.2024.102919

Lea Gerditschke, Jeff S. Schrattner, Davis A. Forman

{"title":"Upper arm muscle activity is influenced by both forearm posture and wrist exertion direction during isometric wrist flexion and extension","authors":"Lea Gerditschke, Jeff S. Schrattner, Davis A. Forman","doi":"10.1016/j.jelekin.2024.102919","DOIUrl":"10.1016/j.jelekin.2024.102919","url":null,"abstract":"<div><p>The purpose of this study was to determine how wrist exertion direction and forearm posture independently influence upper arm muscle activity during isometric wrist contractions. Surface electromyography was recorded from three muscles of the upper-limb: biceps brachii, triceps brachii, and brachioradialis. Participants were seated with their forearm supported in one of three postures (supinated/neutral/pronated) with an adjustable force transducer that could be placed either above, below, or to the right/left of the participant’s hand. Participants performed randomized trials of isometric wrist flexion or extension at five relative intensities: 20, 40, 60, 80, or 100% of maximal force. Trials lasted 4.5 s and both wrist force and electromyography data were assessed. In general, the elbow flexors were more active during wrist flexion, while the triceps were more active in wrist extension, but this pattern reversed in certain forearm postures and wrist exertion directions. Both forearm posture and wrist exertion direction resulted in unique effects on upper arm muscle activity. These findings suggest that muscle activity of the upper arm muscles is influenced independently by both posture and force direction, which should be carefully considered by both motor control specialists and ergonomists.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102919"},"PeriodicalIF":2.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000634/pdfft?md5=281e257b6711e720a86d2a28782992bf&pid=1-s2.0-S1050641124000634-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142147011","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

Altered muscle fibre activation in an antagonistic muscle pair due to perturbed afferent feedback caused by blood flow restriction 血流受限引起的传入反馈紊乱导致一对拮抗肌的肌纤维激活发生变化。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-27 DOI: 10.1016/j.jelekin.2024.102922

Franziska Bubeck , André Tomalka , Tobias Siebert , Oliver Röhrle , Leonardo Gizzi

{"title":"Altered muscle fibre activation in an antagonistic muscle pair due to perturbed afferent feedback caused by blood flow restriction","authors":"Franziska Bubeck , André Tomalka , Tobias Siebert , Oliver Röhrle , Leonardo Gizzi","doi":"10.1016/j.jelekin.2024.102922","DOIUrl":"10.1016/j.jelekin.2024.102922","url":null,"abstract":"<div><h3>Purpose</h3><p>This study aimed to better understand the coping strategy of the neuromuscular system under perturbed afferent feedback. To this end, the neuromechanical effects of transient blood flow restriction (BFR) compared to atmospheric pressure were investigated in an antagonistic muscle pair.</p></div><div><h3>Methods</h3><p>Perceived discomfort and neuromechanical parameters (torque and high-density electromyography) were recorded during submaximal isometric ankle dorsiflexion before, during and after BFR. The tibialis anterior and gastrocnemius lateralis muscles were studied in 14 healthy young adults.</p></div><div><h3>Results</h3><p>Discomfort increased during BFR and decreased to baseline level afterwards. The exerted torque and the co-activation index remained constant, whereas the EMG signal energy increased significantly during BFR. Coherence analysis of the delta band remained constant, whereas the alpha band shows an increase during BFR. Median frequency and muscle fibre conduction velocity showed a positive trend during the first minutes of BFR before significantly decreasing. Both parameters exceeded baseline values after cuff deflation.</p></div><div><h3>Conclusion</h3><p>Perturbed afferent feedback leads to altered neuromechanical parameters. We assume that increased central drive is required to maintain force output, resulting in changed muscle fibre activity. Glycolytic fast-switch fibres are only active for a short time due to oxygen deprivation and hyperacidity, but fatigue effects predominate in the long term.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102922"},"PeriodicalIF":2.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S105064112400066X/pdfft?md5=e50dd5595527ab6c2865fb3878dd4efa&pid=1-s2.0-S105064112400066X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156776","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

Relation between stretch and activation of the medial gastrocnemius muscle during gait in children with cerebral palsy compared to typically developing children 与发育正常的儿童相比，脑瘫儿童在步态过程中内侧腓肠肌的伸展和激活之间的关系

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-26 DOI: 10.1016/j.jelekin.2024.102921

Eline Flux , Babette Mooijekind , Lynn Bar-On , Edwin H.F. van Asseldonk , Annemieke I. Buizer , Marjolein M. van der Krogt

{"title":"Relation between stretch and activation of the medial gastrocnemius muscle during gait in children with cerebral palsy compared to typically developing children","authors":"Eline Flux , Babette Mooijekind , Lynn Bar-On , Edwin H.F. van Asseldonk , Annemieke I. Buizer , Marjolein M. van der Krogt","doi":"10.1016/j.jelekin.2024.102921","DOIUrl":"10.1016/j.jelekin.2024.102921","url":null,"abstract":"<div><p>Stretch hyperreflexia is often a target for treatment to improve gait in children with spastic cerebral palsy (CP). However, the presence of stretch hyperreflexia during gait remains debated. Therefore, we assessed the relation between gastrocnemius medialis muscle-tendon stretch and muscle activation during gait in children with CP compared to typically developing (TD) children. 3D gait analysis including electromyography (EMG) and dynamic ultrasound was carried out to assess, respectively gastrocnemius medialis activation and fascicle, belly, and tendon stretch during treadmill walking. Musculotendon-unit stretch was also estimated using OpenSim. Ratios of EMG/peak lengthening velocities and accelerations were compared between CP and TD. Velocity and acceleration peaks prior to EMG peaks were qualitatively assessed. EMG/velocity and EMG/acceleration ratios were up to 500% higher for CP (n = 14) than TD (n = 15) for most structures. Increased late swing muscle activation in CP was often preceded by fascicle and musculotendon-unit peak lengthening velocity, and early stance muscle activation by peaks in multiple structures. Increased muscle activation in CP is associated with muscle-tendon stretch during gait. Concluding, late swing muscle activation in CP appears velocity-dependent, whereas early stance activation can be velocity- and acceleration-dependent. These insights into stretch reflex mechanisms during gait can assist development of targeted interventions.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102921"},"PeriodicalIF":2.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000658/pdfft?md5=0e745d82ae07b2978ab58f295932f24c&pid=1-s2.0-S1050641124000658-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274715","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

Effects of unilateral and bilateral lower extremity fatigue on static stance and postural adjustments response to the externally initiated perturbation 单侧和双侧下肢疲劳对静态姿态和姿势调整对外部启动扰动的反应的影响

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-08-26 DOI: 10.1016/j.jelekin.2024.102918

Yong Fan , Hui Lyu , Lanlan Chen , Jian Wang , Ying Gao

{"title":"Effects of unilateral and bilateral lower extremity fatigue on static stance and postural adjustments response to the externally initiated perturbation","authors":"Yong Fan , Hui Lyu , Lanlan Chen , Jian Wang , Ying Gao","doi":"10.1016/j.jelekin.2024.102918","DOIUrl":"10.1016/j.jelekin.2024.102918","url":null,"abstract":"<div><p>The study investigated the effects of unilateral and bilateral lower extremity fatigue on both postural stability and postural adjustments. Fourteen young male subjects performed unilateral and bilateral dynamic lower extremity pedaling exercises with 5 sets of 20 times at 50 % maximum voluntary contraction. Center of pressure (COP) signals were recorded before and after the fatigue exercise. Electromyography activities of six trunk and leg muscles were recorded and analyzed during the anticipatory (APAs) and compensatory (CPAs) postural adjustments. The results showed that both fatiguing exercises caused an increase in COP and larger APAs and CPAs in the rectus femoris and tibialis anterior during externally initiated perturbation. However, the observed indicators showed no clear difference between unilateral and bilateral fatigue. These results validated that when enlarged APAs were not sufficient to resist the external perturbation, the central nervous system increased the strength of CPAs to maintain the stability of the body. These findings provided a perspective on the association between APAs and CPAs, which may apply to the athletic training or rehabilitation on postural control.</p></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"78 ","pages":"Article 102918"},"PeriodicalIF":2.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1050641124000622/pdfft?md5=a5db515609f85a04676616bc67d95cb7&pid=1-s2.0-S1050641124000622-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142075804","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

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

C. Larivière , A.H. Eskandari , H. Mecheri , C. Duclos

{"title":"Validation of proprioception measures of the lumbar spine","authors":"C. Larivière , A.H. Eskandari , H. Mecheri , C. Duclos","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":"78 ","pages":"Article 102924"},"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

P. Ippersiel, R. Preuss, T.H. Wideman, S.M. Robbins

{"title":"Pain-related threat and coordination in adults with chronic low back pain during a lifting task: A cross-sectional study","authors":"P. Ippersiel, R. Preuss, T.H. Wideman, S.M. Robbins","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":"78 ","pages":"Article 102923"},"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

Matthew S. Russell , Nicholas J. La Delfa , Bernadette Murphy

{"title":"Assessing the contribution of different upper limb degrees of freedom to an unconstrained shoulder proprioception task","authors":"Matthew S. Russell , Nicholas J. La Delfa , Bernadette Murphy","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":"78 ","pages":"Article 102920"},"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