Journal of Electromyography and Kinesiology最新文献

英文中文

Transcranial magnetic stimulation and electrical stimulation techniques used to measure the excitability of distinct neuronal populations that influence motor output in people with persistent musculoskeletal conditions: A scoping review and narrative synthesis of evidence

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-04-22 DOI: 10.1016/j.jelekin.2025.103011

Patrick Vallance , Ummatul Siddique , Ash Frazer , Peter Malliaras , Bill Vicenzino , Dawson J. Kidgell

Functional impairments are evident in persistent musculoskeletal (MSK) conditions, and linked to altered excitability of neuronal elements contributing to motor output. In MSK conditions, transcranial magnetic stimulation (TMS) or electrical stimulation (ES) techniques have been used to investigate intracortical, corticospinal, spinal and neuromuscular excitability, which influence the efficacy of descending volley transmission to produce movement. This review compiled studies using TMS or ES to investigate neuronal excitability in persistent MSK conditions, to identify techniques used, and to synthesis evidence for neural deficits. We used narrative synthesis to summarise individual study findings. We included 60 studies; 52/60 used at least one TMS technique, and more frequently measured corticospinal tract excitability (48/52). 15/60 studies used at least one ES technique, and more frequently measured neuromuscular excitability (15/15). In tendinopathy, excitability was assessed for a range of distinct neurones; no study measured neuromuscular excitability in low back pain, osteoarthritis or shoulder pain, nor spinal or intracortical excitability in shoulder pain. This review identified a range of TMS and ES techniques used to assess excitability of neural elements. It provides insight for specific deficits contributing to functional impairments in certain persistent MSK conditions, while highlighting evidence gaps hindering the ability to draw meaningful inferences.

{"title":"Transcranial magnetic stimulation and electrical stimulation techniques used to measure the excitability of distinct neuronal populations that influence motor output in people with persistent musculoskeletal conditions: A scoping review and narrative synthesis of evidence","authors":"Patrick Vallance , Ummatul Siddique , Ash Frazer , Peter Malliaras , Bill Vicenzino , Dawson J. Kidgell","doi":"10.1016/j.jelekin.2025.103011","DOIUrl":"10.1016/j.jelekin.2025.103011","url":null,"abstract":"<div><div>Functional impairments are evident in persistent musculoskeletal (MSK) conditions, and linked to altered excitability of neuronal elements contributing to motor output. In MSK conditions, transcranial magnetic stimulation (TMS) or electrical stimulation (ES) techniques have been used to investigate intracortical, corticospinal, spinal and neuromuscular excitability, which influence the efficacy of descending volley transmission to produce movement. This review compiled studies using TMS or ES to investigate neuronal excitability in persistent MSK conditions, to identify techniques used, and to synthesis evidence for neural deficits. We used narrative synthesis to summarise individual study findings. We included 60 studies; 52/60 used at least one TMS technique, and more frequently measured corticospinal tract excitability (48/52). 15/60 studies used at least one ES technique, and more frequently measured neuromuscular excitability (15/15). In tendinopathy, excitability was assessed for a range of distinct neurones; no study measured neuromuscular excitability in low back pain, osteoarthritis or shoulder pain, nor spinal or intracortical excitability in shoulder pain. This review identified a range of TMS and ES techniques used to assess excitability of neural elements. It provides insight for specific deficits contributing to functional impairments in certain persistent MSK conditions, while highlighting evidence gaps hindering the ability to draw meaningful inferences.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103011"},"PeriodicalIF":2.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873349","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 effects of plantar surface stimulation on neuromuscular responses during standing balance and gait in healthy and clinical populations: A systematic review 足底表面刺激对健康和临床人群站立平衡和步态时神经肌肉反应的影响：系统综述

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-04-02 DOI: 10.1016/j.jelekin.2025.103007

Megan Trotman , Phuong L. Ha , Kylie Tucker , Thomas Cattagni , Anna L. Hatton

Enhanced sensory input applied to the plantar surface of the feet, through innovative sensory-stimulating footwear devices, has the potential to improve standing balance and gait. However, the underlying mechanisms by which sensory-stimulating footwear devices bring about their effects on balance and gait remain unclear: changes in neuromuscular control are one possible option. This systematic review aimed to synthesize the effects of enhanced plantar surface stimulation, via footwear, shoe inserts, or floor surfaces, on neuromuscular responses during standing balance and walking gait in healthy and clinical populations. Four databases were selected to identify studies of plantar stimulation devices designed to alter neuromuscular responses during balance or gait. 2773 articles were screened for eligibility based on title and abstract. Thereafter, 37 articles underwent full text review, of which 17 articles were included in the review. The evidence that enhanced plantar sensory stimulation alters muscle activity during standing balance is limited, and during gait is moderate. The effects of sensory-stimulating footwear devices also appear to be dependent on factors such as the target population, the location of the sensory stimuli under the foot, or the complexity of the postural or walking task.

{"title":"The effects of plantar surface stimulation on neuromuscular responses during standing balance and gait in healthy and clinical populations: A systematic review","authors":"Megan Trotman , Phuong L. Ha , Kylie Tucker , Thomas Cattagni , Anna L. Hatton","doi":"10.1016/j.jelekin.2025.103007","DOIUrl":"10.1016/j.jelekin.2025.103007","url":null,"abstract":"<div><div>Enhanced sensory input applied to the plantar surface of the feet, through innovative sensory-stimulating footwear devices, has the potential to improve standing balance and gait. However, the underlying mechanisms by which sensory-stimulating footwear devices bring about their effects on balance and gait remain unclear: changes in neuromuscular control are one possible option. This systematic review aimed to synthesize the effects of enhanced plantar surface stimulation, via footwear, shoe inserts, or floor surfaces, on neuromuscular responses during standing balance and walking gait in healthy and clinical populations. Four databases were selected to identify studies of plantar stimulation devices designed to alter neuromuscular responses during balance or gait. 2773 articles were screened for eligibility based on title and abstract. Thereafter, 37 articles underwent full text review, of which 17 articles were included in the review. The evidence that enhanced plantar sensory stimulation alters muscle activity during standing balance is limited, and during gait is moderate. The effects of sensory-stimulating footwear devices also appear to be dependent on factors such as the target population, the location of the sensory stimuli under the foot, or the complexity of the postural or walking task.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103007"},"PeriodicalIF":2.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792035","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

An objective method to quantify elbow flexor spasticity using surface EMG and 3D motion analysis 利用表面肌电图和三维运动分析量化屈肘肌痉挛的客观方法

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-04-02 DOI: 10.1016/j.jelekin.2025.103004

Mirjam Thielen , Anna Pennekamp , Julia Janine Glaser , Leila Harhaus-Wähner , Ulrich Kneser , Paul Alfred Grützner , Ursula Trinler

Spasticity in the upper extremities, particularly elbow flexor spasticity, significantly impairs motor control. Evaluating the extent of spasticity is crucial for effective therapy planning and assessing treatment outcomes. However, there are currently no accurate and reliable measures to quantify upper extremity spasticity. This study aims to introduce an instrumented assessment method for evaluating elbow flexor spasticity using an integrated approach tailored for spasticity assessment. This clinical study included 17 patients with elbow flexor spasticity (mean age 40 ± 20 years) and 20 arms of 10 healthy adults (mean age 33 ± 8 years). The elbow flexors were passively stretched at low and high velocities, and kinematic data were recorded using 3D motion analysis (U.L.E.M.A. model). Muscle excitations of the biceps brachii were assessed via surface EMG. Outcome parameters included the maximum elbow extension deficit during slow and fast passive stretch, EMG data normalized to maximum voluntary isometric contraction (MVIC) at low and high velocities, and the difference between the two (EMGchange). All outcome parameters showed significant differences (p < 0.05) between patients with elbow flexor spasticity and healthy adults. The proposed instrumented assessment tool is a suitable measurement method for evaluating elbow flexor spasticity.

{"title":"An objective method to quantify elbow flexor spasticity using surface EMG and 3D motion analysis","authors":"Mirjam Thielen , Anna Pennekamp , Julia Janine Glaser , Leila Harhaus-Wähner , Ulrich Kneser , Paul Alfred Grützner , Ursula Trinler","doi":"10.1016/j.jelekin.2025.103004","DOIUrl":"10.1016/j.jelekin.2025.103004","url":null,"abstract":"<div><div>Spasticity in the upper extremities, particularly elbow flexor spasticity, significantly impairs motor control. Evaluating the extent of spasticity is crucial for effective therapy planning and assessing treatment outcomes. However, there are currently no accurate and reliable measures to quantify upper extremity spasticity. This study aims to introduce an instrumented assessment method for evaluating elbow flexor spasticity using an integrated approach tailored for spasticity assessment. This clinical study included 17 patients with elbow flexor spasticity (mean age 40 ± 20 years) and 20 arms of 10 healthy adults (mean age 33 ± 8 years). The elbow flexors were passively stretched at low and high velocities, and kinematic data were recorded using 3D motion analysis (U.L.E.M.A. model). Muscle excitations of the biceps brachii were assessed via surface EMG. Outcome parameters included the maximum elbow extension deficit during slow and fast passive stretch, EMG data normalized to maximum voluntary isometric contraction (MVIC) at low and high velocities, and the difference between the two (EMGchange). All outcome parameters showed significant differences (p < 0.05) between patients with elbow flexor spasticity and healthy adults. The proposed instrumented assessment tool is a suitable measurement method for evaluating elbow flexor spasticity.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103004"},"PeriodicalIF":2.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816617","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

Corrigendum to “Limb and sex-related differences in knee muscle co-contraction exist 3 months after anterior cruciate ligament reconstruction” [J. Electromyogr. and Kines. 66 (2022) 102693]

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-29 DOI: 10.1016/j.jelekin.2025.103002

Abdulmajeed Alfayyadh , Kelsey Neal , Jack R. Williams , Ashutosh Khandha , Kurt Manal , Lynn Snyder-Mackler , Thomas S. Buchanan

引用次数: 0

MVMD-TCCA: A method for gesture classification based on surface electromyographic signals

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-27 DOI: 10.1016/j.jelekin.2025.103006

Wenjie Chen, Shenke Zhang, Xiantao Sun, Cheng Zhang, Yuanyuan Liu

Gesture recognition plays a fundamental role in enabling nonverbal communication and interaction, as well as assisting individuals with motor impairments in performing daily tasks. Surface electromyographic (sEMG) signals, which can effectively detect and predict motor intentions, are integral to achieving accurate gesture classification. This paper proposes a method, the multivariate variational mode decomposition and the two-channel convolutional neural network with added attention mechanism (MVMD-TCCA), to enhance the accuracy of gesture classification for motor intention recognition. The MVMD technique is utilized to decompose and fuse sEMG signals, enriching signal content and improving feature representation. To further optimize gesture classification performance, the convolutional block attention module (CBAM) and CrissCross attention mechanism are integrated into the neural network, enabling superior learning of local and spatial features. The experimental results show that the MVMD-TCCA method achieves an average classification accuracy of 85.09 % on the NinaPro DB2 dataset, representing a 13.46 % improvement compared to the use of the original signal, and an average classification accuracy of 97.90 % on the dataset collected from 15 subjects, reflecting a 1.70 % improvement over the original signal. These findings underscore the critical role of accurate gesture classification in facilitating daily task assistance for cerebral infarction patients, demonstrating the potential of the proposed approach.

{"title":"MVMD-TCCA: A method for gesture classification based on surface electromyographic signals","authors":"Wenjie Chen, Shenke Zhang, Xiantao Sun, Cheng Zhang, Yuanyuan Liu","doi":"10.1016/j.jelekin.2025.103006","DOIUrl":"10.1016/j.jelekin.2025.103006","url":null,"abstract":"<div><div>Gesture recognition plays a fundamental role in enabling nonverbal communication and interaction, as well as assisting individuals with motor impairments in performing daily tasks. Surface electromyographic (sEMG) signals, which can effectively detect and predict motor intentions, are integral to achieving accurate gesture classification. This paper proposes a method, the multivariate variational mode decomposition and the two-channel convolutional neural network with added attention mechanism (MVMD-TCCA), to enhance the accuracy of gesture classification for motor intention recognition. The MVMD technique is utilized to decompose and fuse sEMG signals, enriching signal content and improving feature representation. To further optimize gesture classification performance, the convolutional block attention module (CBAM) and CrissCross attention mechanism are integrated into the neural network, enabling superior learning of local and spatial features. The experimental results show that the MVMD-TCCA method achieves an average classification accuracy of 85.09 % on the NinaPro DB2 dataset, representing a 13.46 % improvement compared to the use of the original signal, and an average classification accuracy of 97.90 % on the dataset collected from 15 subjects, reflecting a 1.70 % improvement over the original signal. These findings underscore the critical role of accurate gesture classification in facilitating daily task assistance for cerebral infarction patients, demonstrating the potential of the proposed approach.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103006"},"PeriodicalIF":2.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738397","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

Does the rate of hip abductor and adductor muscle activation during weight transfer influence voluntary lateral stepping in chronic stroke?

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-26 DOI: 10.1016/j.jelekin.2025.103003

Shabnam Lateef, Marcel Bahia Lanza, Vicki L. Gray

People with chronic stroke (PwCS) suffer from impaired lateral weight transfer, resulting in a loss of balance. The primary purpose of this study was to examine how stroke impairs the rate of hip abductor-adductor muscle activation during weight transfer compared to controls, and whether this influences subsequent stepping performance. The secondary purpose was to determine how stroke affects bilateral coordinated hip abductor-adductor muscle activity between the step and stance legs. 20 PwCS (61.6 ± 7.4 years, 4F/16 M) and 10 healthy controls (64.8 ± 8.9 years, 5F/5M) were included. Participants took a voluntary lateral step, as quickly as possible, in response to a light cue. Bilateral Adductor Longus (ADD) and Gluteus Medius (GM) rate of muscle activation (RoA) were measured using electromyography, and spatiotemporal step characteristics were measured using motion capture. Paretic (p < 0.01) and non-paretic (p < 0.01) stance and step legs had a reduced GM and ADD RoA during weight transfer compared to controls. Reduced stance and step GM and ADD RoA were associated with longer weight transfer and step initiation times (r_s = − 0.47 to – 0.63, p < 0.001). PwCS had a lack of bilateral coordinated GM and ADD activity (p > 0.05). Post-stroke reductions in GM and ADD RoA contribute to altered step characteristics.

{"title":"Does the rate of hip abductor and adductor muscle activation during weight transfer influence voluntary lateral stepping in chronic stroke?","authors":"Shabnam Lateef, Marcel Bahia Lanza, Vicki L. Gray","doi":"10.1016/j.jelekin.2025.103003","DOIUrl":"10.1016/j.jelekin.2025.103003","url":null,"abstract":"<div><div>People with chronic stroke (PwCS) suffer from impaired lateral weight transfer, resulting in a loss of balance. The primary purpose of this study was to examine how stroke impairs the rate of hip abductor-adductor muscle activation during weight transfer compared to controls, and whether this influences subsequent stepping performance. The secondary purpose was to determine how stroke affects bilateral coordinated hip abductor-adductor muscle activity between the step and stance legs. 20 PwCS (61.6 ± 7.4 years, 4F/16 M) and 10 healthy controls (64.8 ± 8.9 years, 5F/5M) were included. Participants took a voluntary lateral step, as quickly as possible, in response to a light cue. Bilateral Adductor Longus (ADD) and Gluteus Medius (GM) rate of muscle activation (RoA) were measured using electromyography, and spatiotemporal step characteristics were measured using motion capture. Paretic (<em>p</em> < 0.01) and non-paretic (<em>p</em> < 0.01) stance and step legs had a reduced GM and ADD RoA during weight transfer compared to controls. Reduced stance and step GM and ADD RoA were associated with longer weight transfer and step initiation times (r<sub>s</sub> = − 0.47 to – 0.63, <em>p</em> < 0.001). PwCS had a lack of bilateral coordinated GM and ADD activity (<em>p</em> > 0.05). Post-stroke reductions in GM and ADD RoA contribute to altered step characteristics.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103003"},"PeriodicalIF":2.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759585","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

Depth sensor technology in facial movement analysis: A comparative evaluation with marker-based motion analysis

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-26 DOI: 10.1016/j.jelekin.2025.103005

Beste Yilmaz, Umut Ozsoy, Yilmaz Yildirim, Ege Alkan

Objective

This study evaluates the reliability and agreement of depth sensor technology compared to marker-based motion analysis for facial movement assessment. Depth sensors, such as the Kinect-V2, offer a non-invasive alternative, but their accuracy in facial kinematics remains uncertain.

Method

100 healthy participants (50 male, 50 female) performed six facial movements— opening −mouth, smiling, eyebrow-lifting, forced-eye-closure, whistling, and frowning. These were recorded simultaneously using a marker-based motion system and a Kinect-V2 depth sensor. Data were analyzed for asymmetry, intra-method reliability using intraclass correlation coefficients (ICC), and agreement via Bland-Altman analysis.

Results

Bland-Altman analysis showed mean biases for facial movements: opening-mouth (−0.99), smiling (2.7), eyebrow-lifting (−1.85), forced-eye-closure (−1.77), whistling (11.59), and frowning (20.82). Mean asymmetry values using the marker-based system vs. depth sensor: smiling (8.16%vs.4.22%), eyebrow-lifting (7.32%vs.6.88%), eye-closure (8.42%vs.5.39%), and frowning (11.50vs.13.86%). ICC values ranged from 0.41 (forced-eye-closure) to 0.80 (eyebrow lifting) for the marker-based system and 0.61 (forced-eye-closure) to 0.85 (mouth opening) for the depth sensor.

Conclusions

While depth sensors show strong intra-method reliability, they demonstrate biases and broader limits of agreement for subtle expressions. Further algorithmic improvements are needed for clinical applications.

{"title":"Depth sensor technology in facial movement analysis: A comparative evaluation with marker-based motion analysis","authors":"Beste Yilmaz, Umut Ozsoy, Yilmaz Yildirim, Ege Alkan","doi":"10.1016/j.jelekin.2025.103005","DOIUrl":"10.1016/j.jelekin.2025.103005","url":null,"abstract":"<div><h3>Objective</h3><div>This study evaluates the reliability and agreement of depth sensor technology compared to marker-based motion analysis for facial movement assessment. Depth sensors, such as the Kinect-V2, offer a non-invasive alternative, but their accuracy in facial kinematics remains uncertain.</div></div><div><h3>Method</h3><div>100 healthy participants (50 male, 50 female) performed six facial movements— opening −mouth, smiling, eyebrow-lifting, forced-eye-closure, whistling, and frowning. These were recorded simultaneously using a marker-based motion system and a Kinect-V2 depth sensor. Data were analyzed for asymmetry, intra-method reliability using intraclass correlation coefficients (ICC), and agreement via Bland-Altman analysis.</div></div><div><h3>Results</h3><div>Bland-Altman analysis showed mean biases for facial movements: opening-mouth (−0.99), smiling (2.7), eyebrow-lifting (−1.85), forced-eye-closure (−1.77), whistling (11.59), and frowning (20.82). Mean asymmetry values using the marker-based system vs. depth sensor: smiling (8.16%vs.4.22%), eyebrow-lifting (7.32%vs.6.88%), eye-closure (8.42%vs.5.39%), and frowning (11.50vs.13.86%). ICC values ranged from 0.41 (forced-eye-closure) to 0.80 (eyebrow lifting) for the marker-based system and 0.61 (forced-eye-closure) to 0.85 (mouth opening) for the depth sensor.</div></div><div><h3>Conclusions</h3><div>While depth sensors show strong intra-method reliability, they demonstrate biases and broader limits of agreement for subtle expressions. Further algorithmic improvements are needed for clinical applications.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103005"},"PeriodicalIF":2.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759586","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

Analysis of agricultural applicability of arm-support exoskeletons with simulated orchard pruning and harvesting tasks

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-26 DOI: 10.1016/j.jelekin.2025.103008

Byungkyu Choi, Jaehyun Park

Repetitive upper limb movements involved in pruning and harvesting tasks can cause musculoskeletal disorders, threatening the sustainability of the agricultural workforce. The present study determines whether arm-support exoskeletons (ASEs) would be an effective intervention to reduce the physical strain associated with manual pruning and harvesting tasks in orchard agriculture. Participants (n = 24; sex-balanced) performed simulated pruning and harvesting tasks at four different heights using two commercially available ASEs. Muscle activity, perceived exertion, task completion time, and usability were measured. The results indicated that ASEs significantly reduced muscle activity in the upper limbs. However, this resulted in additional strain on other body parts, such as the lower back and lower limbs, and increased task completion time. These findings highlight the need for continuous research and systematic designs to pursue feasible interventions for implementing ASEs in orchard agriculture. The findings of this study are expected to contribute to understanding the potential benefits and limitations of using ASEs in pruning and harvesting tasks, specifically in the context of orchard agriculture.

{"title":"Analysis of agricultural applicability of arm-support exoskeletons with simulated orchard pruning and harvesting tasks","authors":"Byungkyu Choi, Jaehyun Park","doi":"10.1016/j.jelekin.2025.103008","DOIUrl":"10.1016/j.jelekin.2025.103008","url":null,"abstract":"<div><div>Repetitive upper limb movements involved in pruning and harvesting tasks can cause musculoskeletal disorders, threatening the sustainability of the agricultural workforce. The present study determines whether arm-support exoskeletons (ASEs) would be an effective intervention to reduce the physical strain associated with manual pruning and harvesting tasks in orchard agriculture. Participants (<em>n</em> = 24; sex-balanced) performed simulated pruning and harvesting tasks at four different heights using two commercially available ASEs. Muscle activity, perceived exertion, task completion time, and usability were measured. The results indicated that ASEs significantly reduced muscle activity in the upper limbs. However, this resulted in additional strain on other body parts, such as the lower back and lower limbs, and increased task completion time. These findings highlight the need for continuous research and systematic designs to pursue feasible interventions for implementing ASEs in orchard agriculture. The findings of this study are expected to contribute to understanding the potential benefits and limitations of using ASEs in pruning and harvesting tasks, specifically in the context of orchard agriculture.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 103008"},"PeriodicalIF":2.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747956","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

Impact of age on muscle and kinematic responses to an obstacle trip while walking

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-19 DOI: 10.1016/j.jelekin.2025.102993

Steven Phu , Daina L Sturnieks , Stephen R Lord , Yoshiro Okubo

Introduction

This study examined the impact of age on muscle and kinematic responses to an obstacle trip while walking.

Materials and Methods

102 older (65–90 years) and 26 young (21–35 years) people were unexpectedly tripped using a pop-up obstacle that contacted their left foot while walking on an 8-m walkway. Kinematics and lower limb muscle responses during the first and second recovery steps were measured.

Results

Following a trip, older people more often lowered their tripped foot before the obstacle and fell into the harness, compared to young (P < 0.05). When the tripped foot was immediately lifted over the obstacle, older people showed greater co-contraction of ankle muscles and faster peak activation of plantar-flexors but slower, shorter and lower recovery steps than young (P < 0.01). When the tripped foot was immediately lowered, despite similar muscle responses, older people took shorter and lower steps to clear the obstacle and were less stable than young (P < 0.01).

Conclusions

Lower-limb muscle responses to an obstacle trip in older people may be quick but inefficient (co-contraction), resulting in poorer recovery steps and more falls compared to young people. Exercise interventions should aim to improve muscle capacity and motor skills required to prevent falls following unexpected trips.

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引用次数: 0

Effects of neuromuscular training on proprioception and muscular reaction time in older woman: Randomized controlled trial

IF 2 4区医学 Q3 NEUROSCIENCES

Journal of Electromyography and Kinesiology

Pub Date : 2025-03-17 DOI: 10.1016/j.jelekin.2025.102994

Yeny Concha-Cisternas , José Castro Piñero , Carlos Celis-Morales , Pablo Valdés-Badilla , Cristian Núñez-Espinosa , Igor Cigarroa , Joaquín Salazar-Méndez , Miguel Alarcón-Rivera , Eduardo Guzmán -Muñoz

Background

this study aimed analyze the effects of a neuromuscular training program compared to a multicomponent training program on proprioception and muscle reaction time in older woman.

Material and methods

Randomized controlled trial, included 54 older women randomized into 3 groups: multicomponent group (MCG), neuromuscular group (NMG), and control group (CG). Proprioception was assessed using the active repositioning test in the shoulder, elbow, hip, and knee joints. The muscular reaction time of the peroneus longus, tibialis anterior, and gastrocnemius medialis were evaluated. MCG carried out a multicomponent training program and, NMG realized neuromuscular training program plus the multicomponent training.

Results

A significant time × group interaction was observed in proprioception the shoulder joints (F = 7.57; p = 0.003; ηp² = 0.255), hip joints (F = 10.2; p = < 0.001; ηp² = 0.258) and knee (F = 7.12; p = 0.004; ηp² = 0.244) and reaction time of the peroneus longus (F = 13.7; p = < 0.001; ηp² = 0.378), tibialis anterior (F = 8.14; p = 0.002; ηp² = 0.246) and gastrocnemius medial (F = 7.86; p = 0.003; ηp² = 0.263). Multiple comparisons showed that there are significant improvements between the pre-and post-assessment of the NMG in proprioception and muscle reaction time.

Conclusions

Neuromuscular training program enhances the effects of multicomponent training and should be included in the physical activity programs of older people.

{"title":"Effects of neuromuscular training on proprioception and muscular reaction time in older woman: Randomized controlled trial","authors":"Yeny Concha-Cisternas , José Castro Piñero , Carlos Celis-Morales , Pablo Valdés-Badilla , Cristian Núñez-Espinosa , Igor Cigarroa , Joaquín Salazar-Méndez , Miguel Alarcón-Rivera , Eduardo Guzmán -Muñoz","doi":"10.1016/j.jelekin.2025.102994","DOIUrl":"10.1016/j.jelekin.2025.102994","url":null,"abstract":"<div><h3>Background</h3><div>this study aimed analyze the effects of a neuromuscular training program compared to a multicomponent training program on proprioception and muscle reaction time in older woman.</div></div><div><h3>Material and methods</h3><div>Randomized controlled trial, included 54 older women randomized into 3 groups: multicomponent group (MCG), neuromuscular group (NMG), and control group (CG). Proprioception was assessed using the active repositioning test in the shoulder, elbow, hip, and knee joints. The muscular reaction time of the peroneus longus, tibialis anterior, and gastrocnemius medialis were evaluated. MCG carried out a multicomponent training program and, NMG realized neuromuscular training program plus the multicomponent training.</div></div><div><h3>Results</h3><div>A significant time × group interaction was observed in proprioception the shoulder joints (F = 7.57; p = 0.003; ηp<sup>2</sup> = 0.255), hip joints (F = 10.2; p = < 0.001; ηp<sup>2</sup> = 0.258) and knee (F = 7.12; p = 0.004; ηp<sup>2</sup> = 0.244) and reaction time of the peroneus longus (F = 13.7; p = < 0.001; ηp<sup>2</sup> = 0.378), tibialis anterior (F = 8.14; p = 0.002; ηp<sup>2</sup> = 0.246) and gastrocnemius medial (F = 7.86; p = 0.003; ηp<sup>2</sup> = 0.263). Multiple comparisons showed that there are significant improvements between the pre-and post-assessment of the NMG in proprioception and muscle reaction time.</div></div><div><h3>Conclusions</h3><div>Neuromuscular training program enhances the effects of multicomponent training and should be included in the physical activity programs of older people.</div></div>","PeriodicalId":56123,"journal":{"name":"Journal of Electromyography and Kinesiology","volume":"82 ","pages":"Article 102994"},"PeriodicalIF":2.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686632","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}

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