Journal of Electromyography and Kinesiology最新文献_第8页

Assessing stroke-induced abnormal muscle coactivation in the upper limb using the surface EMG co-contraction Index: A systematic review 用表肌电共收缩指数评估中风引起的上肢异常肌肉共激活：一项系统综述。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2025-01-18 DOI: 10.1016/j.jelekin.2025.102985

Yong Wang , Lingling Zhong , Minxia Jin , Dantong Liao , Adam J. Privitera , Arnold Y.L. Wong , Gabriel C.H. Fong , Shi-Chun Bao , Rui Sun

{"title":"Assessing stroke-induced abnormal muscle coactivation in the upper limb using the surface EMG co-contraction Index: A systematic review","authors":"Yong Wang , Lingling Zhong , Minxia Jin , Dantong Liao , Adam J. Privitera , Arnold Y.L. Wong , Gabriel C.H. Fong , Shi-Chun Bao , Rui Sun","doi":"10.1016/j.jelekin.2025.102985","DOIUrl":"10.1016/j.jelekin.2025.102985","url":null,"abstract":"<div><div>Electromyography (EMG) is increasingly used in stroke assessment research, with studies showing that EMG co-contraction (EMG-CC) of upper limb muscles can differentiate stroke patients from healthy individuals and correlates with clinical scales assessing motor function. This suggests that EMG-CC has potential for both assessing motor impairments and monitoring recovery in stroke patients. However, systematic reviews on EMG-CC’s effectiveness in stroke assessment are lacking. To address this, the present study aims to synthesize recent evidence on EMG-CC’s use in evaluating stroke-induced muscle abnormality. Eighteen studies including a total of 308 stroke patients and 155 healthy controls were included. Fifteen out of Eighteen included studies used the EMG-CC to successfully differentiate abnormal muscle co-contraction performance of the affected upper limb, even in comparison to the unaffected side in static tasks (isometric maximal voluntary contractions) and dynamic tasks (movement-oriented or goal-oriented). The EMG-CC shows promise as a convenient and effective tool for evaluating the extent of abnormal muscle coactivation in the upper limbs of post-stroke patients with spasticity as well as assessing the effectiveness of rehabilitation interventions. Further research is needed to validate these findings and establish standardized protocols for EMG-CC’s use in stroke assessment.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"81 ","pages":"Article 102985"},"PeriodicalIF":2.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143030396","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

Muscle activity mapping by single peak localization from HDsEMG 利用HDsEMG单峰定位绘制肌肉活动图。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2025-01-09 DOI: 10.1016/j.jelekin.2025.102976

Jonathan Lundsberg , Anders Björkman , Nebojsa Malesevic , Christian Antfolk

{"title":"Muscle activity mapping by single peak localization from HDsEMG","authors":"Jonathan Lundsberg , Anders Björkman , Nebojsa Malesevic , Christian Antfolk","doi":"10.1016/j.jelekin.2025.102976","DOIUrl":"10.1016/j.jelekin.2025.102976","url":null,"abstract":"<div><div>Human-machine interfaces using electromyography (EMG) offer promising applications in control of prosthetic limbs, rehabilitation assessment, and assistive technologies. These applications rely on advanced algorithms that decode the activation patterns of muscles contractions. This paper presents a new approach to assess and decode muscle activity by localizing the origin of <em>individual</em> temporal peaks in high-density surface EMG recordings from the dorsal forearm during low force finger extensions. Localization was performed using a surface Gaussian fit applied in the spatial domain to the varying amplitudes across the channels of the electrode grids. Localized EMG peaks were used to estimate different muscle volumes for each finger, showing high consistency across 10 subjects. The results suggest that muscle regions generating each action are highly distinct and indicate potential structural differences of muscle fibres between digits. The estimated volumes were further used to classify <em>individual</em> EMG peaks into each corresponding action. The percentage of correctly classified peaks for each action across 10 participants were 79 ± 18, 84 ± 9, 76 ± 13, and 79 ± 9 percent for index, middle, ring, and little finger extension, respectively. The presented volume analysis provides a new approach to assessing the spatial activation patterns in compact muscle anatomies; and the single peak classification approach opens up possibilities for near-instantaneous identification of muscle activations.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"81 ","pages":"Article 102976"},"PeriodicalIF":2.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143017134","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

Thoracic paraspinal muscle concentric needle electrode jitter analysis in electrophysiological diagnosis of ALS 胸椎棘旁肌同心针电极抖动分析在肌萎缩侧索硬化症电生理诊断中的应用。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2025-01-09 DOI: 10.1016/j.jelekin.2025.102975

Handan Uzunçakmak-Uyanık , Fatma Gökçem Yıldız , Ersin Tan , Çağrı Mesut Temuçin

{"title":"Thoracic paraspinal muscle concentric needle electrode jitter analysis in electrophysiological diagnosis of ALS","authors":"Handan Uzunçakmak-Uyanık , Fatma Gökçem Yıldız , Ersin Tan , Çağrı Mesut Temuçin","doi":"10.1016/j.jelekin.2025.102975","DOIUrl":"10.1016/j.jelekin.2025.102975","url":null,"abstract":"<div><h3>Objectives</h3><div>Jitter analysis with concentric needle electrode of the thoracic 9 (T9) paraspinal muscle (PM), where the needle EMG examination at rest is difficult, was performed in both amyotrophic lateral sclerosis (ALS) patients and the controls.</div></div><div><h3>Methods</h3><div>For the T9 PM, both upper limit for mean and individual mean consecutive difference (MCD) values and spike numbers were calculated according to jitter values of pairs from controls. In addition to the descriptive statistics, differences between two groups and T9 PM needle EMG and jitter analysis findings of patients were compared (p = 0.05).</div></div><div><h3>Results</h3><div>Mean MCD median values of T9 PM were 62.8 and 26.2 µs in patient and controls respectively. Upper limit of mean and individual MCDs for the T9 PM were determined as 36.95 μs, 57.95 μs respectively. The differences between controls and patients in terms of all jitter analysis parametres (p < 0.001) and the comparison of patients’ T9 PM needle EMG and jitter analysis findings grading were statistically significant (p = 0.029).</div></div><div><h3>Conclusion</h3><div>The T9 PM jitter analysis performed during routine EMG can be used to support the electrophysiological diagnosis of ALS in challenging cases and may contribute to minimizing the number of muscles examined. Furthermore, our study contributed to the T9 PM reference values for jitter analysis.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"81 ","pages":"Article 102975"},"PeriodicalIF":2.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142980691","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

Lower limb biomechanics and control of center of mass during turning phases in daily gait 日常步态转弯阶段的下肢生物力学与质心控制

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-24 DOI: 10.1016/j.jelekin.2024.102959

Riku Kawabata , Moeka Yokoyama , Yuka Matsumoto , Keisuke Kubota , Sachiko Kosuge , Yasuyo Sunaga , Naohiko Kanemura

{"title":"Lower limb biomechanics and control of center of mass during turning phases in daily gait","authors":"Riku Kawabata , Moeka Yokoyama , Yuka Matsumoto , Keisuke Kubota , Sachiko Kosuge , Yasuyo Sunaga , Naohiko Kanemura","doi":"10.1016/j.jelekin.2024.102959","DOIUrl":"10.1016/j.jelekin.2024.102959","url":null,"abstract":"<div><div>This study aims to elucidate the biomechanical characteristics of turning in daily life by analyzing the three-step process of approach, turn, and departure phases. The research involved ten healthy young individuals performing straight walking and 90° turns, categorized into Side-Step (SS) and Cross-Step (CS) turns. Using a 17-camera motion capture system and force plates, the study measured joint angles, moments, and center of mass (COM) variations. The results indicated that turning involves rotational movements of the lower limbs across three phases, with distinct biomechanical roles for each step. From the perspective of COM control, instability increased at the departure foot in SS, while in CS, stability was maintained at both the approach and departure foot.</div><div>This study emphasized the importance of rotational movements and rotational forces in the lower limb joints during turning. It also revealed that the center of mass is controlled across three steps. These findings highlight the need for a comprehensive analysis of turning and add a new perspective to gait analysis during turning.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"80 ","pages":"Article 102959"},"PeriodicalIF":2.0,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748273","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

Neuromechanical adaptations in the gastrocnemius muscle after Achilles tendon rupture during walking 行走时跟腱断裂后腓肠肌的神经机械适应性变化

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-23 DOI: 10.1016/j.jelekin.2024.102962

Raad M. Khair , Jadyn Watt , Maria Sukanen , Neil J. Cronin , Taija Finni

{"title":"Neuromechanical adaptations in the gastrocnemius muscle after Achilles tendon rupture during walking","authors":"Raad M. Khair , Jadyn Watt , Maria Sukanen , Neil J. Cronin , Taija Finni","doi":"10.1016/j.jelekin.2024.102962","DOIUrl":"10.1016/j.jelekin.2024.102962","url":null,"abstract":"<div><div>Although some Achilles tendon rupture (ATR) patients regain function in low-force levels activities, it is not yet well known how neuromuscular and structural alterations after ATR manifest during everyday-locomotion. This study assessed medial gastrocnemius (MG) fascicle shortening during walking 1-year after ATR. Additionally, we explored neuromuscular alterations in lateral gastrocnemius (LG), soleus and flexor hallucis longus (FHL) muscles.</div><div>We observed 3.1 pp (95 %CI 0.8–5.4 pp) higher average and 14.5 pp (95 %CI 0.5–28.5 pp) higher peak LG surface electromyography amplitude in the injured compared to the un-injured during walking, but no differences were observed in soleus or FHL. The injured limb fascicles were 12.9 mm shorter while standing compared to the un-injured limb. In absolute terms, MG shortening in the injured limb was 2.8 mm (95 %CI 0.96–4.6 mm) smaller compared to the un-injured limb. However, when normalized to standing fascicle length, the amount of shortening was not different between the limbs.</div><div>Our results showed that 1-year after ATR, MG muscle had remodelled, which manifested as shorter fascicle length during standing. During walking, injured and un-injured MG fascicles showed similar shortening relative to the standing fascicle length, suggesting that MG could function effectively at the new mechanical settings during everyday locomotion.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"80 ","pages":"Article 102962"},"PeriodicalIF":2.0,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704541","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

Identification of muscle-activation-dependent human-exoskeleton coupling parameters 识别依赖肌肉激活的人体-骨骼耦合参数。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-12 DOI: 10.1016/j.jelekin.2024.102946

Cheng Huang , Shuang Ji , Tianyi Sun, Zhenlei Chen, Qing Guo, Yao Yan

{"title":"Identification of muscle-activation-dependent human-exoskeleton coupling parameters","authors":"Cheng Huang , Shuang Ji , Tianyi Sun, Zhenlei Chen, Qing Guo, Yao Yan","doi":"10.1016/j.jelekin.2024.102946","DOIUrl":"10.1016/j.jelekin.2024.102946","url":null,"abstract":"<div><div>This paper proposed a muscle-activation-dependent human-exoskeleton model for predicting human-exoskeleton coupling parameters to improve the studies of coupling dynamics. With a newly designed platform and the help of 20 volunteers (10 males and 10 females, age: 24.45 ± 2.31 years old, height: 167.70 ± 8.35 cm, weight: 66.50 ± 18.74 kg), coupling parameters were identified with surface electromyographic (EMG) signals monitored to represent muscle activation. Then convolutional neural network (CNN) was used to predict coupling parameters with six EMG features as inputs:mean absolute value (MAV), mean absolute value slope (MAVSLP), waveform length (WL), Willison Amplitude (WAMP), variance (VAR), and auto regressive (AR) coefficients. Finally, sensitivity analysis of the CNN’s performance identified AR, MAV, and VAR as the key determinants of the coupling parameters. Further analysis unveiled strong correlation between coupling stiffness and both MAV and VAR. The novelty and contribution are the design of coupling experimental platform and the establishment of muscle-activation-dependent human-exoskeleton coupling model which provides a possibility to obtain coupling parameter identification form complex human-exoskeleton interaction scenarios.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"80 ","pages":"Article 102946"},"PeriodicalIF":2.0,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645188","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

Myoelectric performance of the reconstructed elbow flexor in patients with brachial plexus injuries 臂丛神经损伤患者重建屈肘肌的肌电表现

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-09 DOI: 10.1016/j.jelekin.2024.102944

Emily J. Miller , Sandesh G. Bhat , Paul H. Kane , Alexander Y. Shin , Kenton R. Kaufman

{"title":"Myoelectric performance of the reconstructed elbow flexor in patients with brachial plexus injuries","authors":"Emily J. Miller , Sandesh G. Bhat , Paul H. Kane , Alexander Y. Shin , Kenton R. Kaufman","doi":"10.1016/j.jelekin.2024.102944","DOIUrl":"10.1016/j.jelekin.2024.102944","url":null,"abstract":"<div><div>Traumatic adult brachial plexus injury is a debilitating injury. Myoelectric exoskeletons are functional tools for restoring elbow flexion. Electromyography signals are used for exoskeleton control, but a characterization specific to the traumatic adult brachial plexus injury population has yet to be performed. This study evaluated if adult patients with traumatic brachial plexus injury and a reconstructed elbow flexor can control a myoelectric exoskeleton. Adult patients who underwent surgical intervention to restore elbow flexion with traumatic brachial plexus injury were recruited for this cross-sectional study. The processed elbow flexor muscle signal and activation thresholds were used to evaluate criteria for exoskeleton control algorithm development. A single activation threshold can be utilized for exoskeleton control, but the calibration routine should consider the resting signal for both extended and flexed elbow positions. The data indicated a ‘settle-time’ following contraction is needed to prevent unintentional movement of the exoskeleton. All patients activated their elbow flexor above the activation threshold in the supported, flexed position. However, there were different abilities to generate multiple, discrete signals. These results were not specific to surgery, nerve implemented for reconstruction, or post-operative recovery time. Patients with a brachial plexus injury and a reconstructed elbow flexor demonstrated subject-specific capabilities for exoskeleton control.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102944"},"PeriodicalIF":2.0,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645186","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 landing biomechanics in the presence of delayed onset muscle soreness following or not active recovery 是否积极恢复后出现迟发性肌肉酸痛时着地生物力学的差异。

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-06 DOI: 10.1016/j.jelekin.2024.102948

Andressa L. Lemos , Karine J.V. Stoelben , Evangelos Pappas , Felipe P Carpes

{"title":"Differences in landing biomechanics in the presence of delayed onset muscle soreness following or not active recovery","authors":"Andressa L. Lemos , Karine J.V. Stoelben , Evangelos Pappas , Felipe P Carpes","doi":"10.1016/j.jelekin.2024.102948","DOIUrl":"10.1016/j.jelekin.2024.102948","url":null,"abstract":"<div><h3>Objective</h3><div>Delayed onset muscle soreness (DOMS) can reduce joint range of motion and strength, cause edema, and increase joint stiffness. Here we set out to determine whether quadriceps DOMS followed by an active recovery low-intensity exercise alters jump landing biomechanics.</div></div><div><h3>Methods</h3><div>3D landing kinematics, kinetics, and DOMS were evaluated in 26 healthy adults (15 women) performing drop and vertical jump landings before and after a squat protocol to induce quadriceps DOMS. In the presence of DOMS, half of the participants (n = 13) performed a low-intensity exercise for active recovery (10-minute treadmill walking), while the other half (n = 13) did not. Descriptive statistics and generalized estimative equations were applied to determine the effects of DOMS and active recovery on landing kinematics and kinetics.</div></div><div><h3>Results</h3><div>DOMS decreased knee and ankle flexion angles and increased knee and ankle frontal plane angles during vertical jumps. DOMS elicited a longer time to reach peak ground reaction force during drop jumps. Low-intensity exercise for active recovery reduced DOMS perception but did not alter the biomechanics of landing.</div></div><div><h3>Conclusion</h3><div>DOMS changes landing strategy. However, including a low-intensity exercise for active recovery before landing practice did not change the kinematics and kinetics of landing.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102948"},"PeriodicalIF":2.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633549","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

Influence of countermovement depth on net force, push-off time, vertical impulse and performance during jumping 反向运动深度对净力、腾空时间、垂直冲量和跳跃成绩的影响

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-06 DOI: 10.1016/j.jelekin.2024.102945

Félicie Pommerell , Sébastien Boyas , Pierre Samozino , Baptiste Morel , Jérémie Begue , Abderrahmane Rahmani , Nicolas Peyrot

{"title":"Influence of countermovement depth on net force, push-off time, vertical impulse and performance during jumping","authors":"Félicie Pommerell , Sébastien Boyas , Pierre Samozino , Baptiste Morel , Jérémie Begue , Abderrahmane Rahmani , Nicolas Peyrot","doi":"10.1016/j.jelekin.2024.102945","DOIUrl":"10.1016/j.jelekin.2024.102945","url":null,"abstract":"<div><div>The purpose of this study was to investigate the influence of push-off distance on maximal jump height and to characterize the relationships between vertical jump mechanical parameters. Seventeen CrossFit athletes performed maximal countermovement jumps on two force-plates, with four different push-off distances induced by different countermovement depths. Results confirmed that push-off distance and maximal jump height were related by a quadratic relationship, and that exists an individual push-off distance maximizing maximal jump height. Furthermore, the increase in push-off distance was associated with an increase in the time of push-off and a concomitant decrease in the mean vertical external force, changing the relative net vertical impulse and so maximal jump height. An almost perfect negative linear relationship was observed between mean vertical external force and time of push-off (<em>r</em> = −0.99, <em>p</em> = 0.006), mathematically resulting in a quadratic relationship between relative net vertical impulse and time of push-off (<em>r</em> = 1.00, <em>p</em> < 0.001). This negative linear relationship could be explained by changes in joint angles and velocities associated with an increase in push-off distance, modifying joint torque production capacities during vertical jumping. This provides new insights to characterize vertical jump mechanical parameters and ways to optimize training and jump performance.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102945"},"PeriodicalIF":2.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142633572","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

Effect of prior neuromuscular electrical stimulation of vastus lateralis on the fatigue induced by a sustained voluntary knee extension in men 事先对阔筋膜进行神经肌肉电刺激对男性持续自主伸膝引起疲劳的影响

IF 2 4区医学

Journal of Electromyography and Kinesiology Pub Date : 2024-11-06 DOI: 10.1016/j.jelekin.2024.102942

Clément Lanfranchi , Boris Matkowski , Sylvain Rayroud , Alain Martin , Nicola A Maffiuletti , Romuald Lepers , Nicolas Place

{"title":"Effect of prior neuromuscular electrical stimulation of vastus lateralis on the fatigue induced by a sustained voluntary knee extension in men","authors":"Clément Lanfranchi , Boris Matkowski , Sylvain Rayroud , Alain Martin , Nicola A Maffiuletti , Romuald Lepers , Nicolas Place","doi":"10.1016/j.jelekin.2024.102942","DOIUrl":"10.1016/j.jelekin.2024.102942","url":null,"abstract":"<div><h3>Purpose</h3><div>The purpose of this study was to investigate the effect of vastus lateralis (VL) selective fatigue induced by neuromuscular electrical stimulation (NMES) on knee extensor electromyographic (EMG) activity during a sustained submaximal isometric contraction.</div></div><div><h3>Methods</h3><div>Thirteen healthy men (28 ± 5 years) completed two experimental sessions in which either the VL was pre-fatigued for 17 min (NMES session) or no intervention was performed (control session, CTRL). Subsequently, participants were asked to sustain an isometric knee extension at 20 % of maximal voluntary contraction (MVC) torque until task failure.</div></div><div><h3>Results</h3><div>VL M-wave amplitude was reduced (−34 ± 26 %, P = 0.008) following the NMES intervention, while MVC torque was reduced by 26 ± 10 %. The time to task failure was 23 ± 10 % shorter (P = 0.002) in NMES (186 ± 75 s) than in CTRL (251 ± 128 s). EMG activity measured during the sustained contraction was higher for vastus medialis and rectus femoris muscles in NMES compared to CTRL (P < 0.001), but was comparable for VL (P > 0.05). The extent and origin of neuromuscular fatigue at task failure measured through MVCs combined with electrically-evoked contractions did not differ between NMES and CTRL.</div></div><div><h3>Conclusion</h3><div>Compensatory activity from synergist muscles occurred in response to a pre-fatigue intervention, which reduced the time to task failure of a sustained submaximal contraction but did not affect the extent and origin of neuromuscular fatigue.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"79 ","pages":"Article 102942"},"PeriodicalIF":2.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142640416","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