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Consensus for experimental design in electromyography (CEDE) project: Checklist for reporting and critically appraising studies using EMG (CEDE-Check) J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-03-13 Manuela Besomi, Valter Devecchi, Deborah Falla, Kevin McGill, Matthew C. Kiernan, Roberto Merletti, Jaap H. van Dieën, Kylie Tucker, Edward A. Clancy, Karen Søgaard, François Hug, Richard G. Carson, Eric Perreault, Simon Gandevia, Thor Besier, John C. Rothwell, Roger M. Enoka, Aleš Holobar, Catherine Disselhorst-Klug, Tim Wrigley, Madeleine Lowery, Dario Farina, Paul W. Hodges
The diversity in electromyography (EMG) techniques and their reporting present significant challenges across multiple disciplines in research and clinical practice, where EMG is commonly used. To address these challenges and augment the reproducibility and interpretation of studies using EMG, the Consensus for Experimental Design in Electromyography (CEDE) project has developed a checklist (CEDE-Check)
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A fast gradient convolution kernel compensation method for surface electromyogram decomposition J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-03-04 Chuang Lin, Ziwei Cui, Chen Chen, Yanhong Liu, Chen Chen, Ning Jiang
Decomposition of EMG signals provides the decoding of motor unit (MU) discharge timings. In this study, we propose a fast gradient convolution kernel compensation (fgCKC) decomposition algorithm for high-density surface EMG decomposition and apply it to an offline and real-time estimation of MU spike trains. We modified the calculation of the cross-correlation vectors to improve the calculation efficiency
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How many motor units is enough? An assessment of the influence of the number of motor units on firing rate calculations J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-03-03 Michael J. Marsala, David A. Gabriel, J. Greig Inglis, Anita D. Christie
The number of motor units included in calculations of mean firing rates varies widely in the literature. It is unknown how the number of decomposed motor units included in the calculation of firing rate per participant compares to the total number of active motor units in the muscle, and if this is different for males and females. Bootstrapped distributions and confidence intervals (CI) of mean motor
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Impact of combined lumbar spine fusion and total hip arthroplasty on spine, pelvis, and hip kinematics during a sit to stand task J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-03-03 Shawn M. Robbins, Evangelos Tyrpenou, Soomin Lee, Patrick Ippersiel, John Antoniou
Lumbar fusion is a risk factor for hip dislocation following total hip arthroplasty (THA). The objective was to compare joint/segment angles during sit-stand-sit in participants that had a THA with and without a lumbar fusion. The secondary objective was to compare pain, physical function, disability, and quality of life. This cross-sectional study includes participants that had THA and lumbar fusion
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Spatiotemporal lower-limb asymmetries during stair descent in athletes following anterior cruciate ligament reconstruction J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-02-11 Dario G. Liebermann, Jonas L. Markström, Jonas Selling, Charlotte K. Häger
This study evaluated motor control recovery at different times following anterior cruciate ligament reconstruction (ACLR) by investigating lower-limb spatiotemporal symmetry during stair descent performances. We used a cross-sectional design to compare asymptomatic athletes (Controls, n = 18) with a group of people with ACLR (n = 49) divided into three time-from-ACLR subgroups (Early: <6 months, n
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Determining whether biomechanical variables that describe common ‘safe lifting’ cues are associated with low back loads J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-02-02 Daniel P. Armstrong, Justin B. Davidson, Steven L. Fischer
Lift technique training programs have been implemented to help reduce injury risk, but the underlying content validity of cues used within these programs is not clear. The objective of this study was to determine whether biomechanical variables, that commonly used lifting cues aim to elicit, are associated with resultant low back extensor moment exposures. A sample of 72 participants were recruited
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Excitation distribution of the trapezius changes in response to increasing contraction intensity, but not repeated contractions J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-02-02 Kara-Lyn Harrison, Zachariah Henderson, Josée Rochon, Sarah Bohunicky, Trisha Scribbans
Upper trapezius (UT) excitation redistributes with experimentally-induced muscle pain, fatigue, and repeated contractions. Excitation distribution variability is proposed to reduce the likelihood of shoulder pain and pathology by reducing cumulative stress on musculoskeletal structures. While the middle (MT) and lower (LT) trapezius are pivotal in scapular stabilization, it remains unclear whether
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Evaluation of generic EMG-Torque models across two Upper-Limb joints J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-02-02 Haopeng Wang, Berj Bardizbanian, Ziling Zhu, He Wang, Chenyun Dai, Edward A. Clancy
Advanced single-use dynamic EMG-torque models require burdensome subject-specific calibration contractions and have historically been to produce lower error than generic models (i.e., models that are identical across subjects and muscles). To investigate this assumption, we studied generic one degree of freedom (DoF) models derived from the ensemble median of subject-specific models, evaluated across
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Lower extremity muscle patterns and frontal plane biomechanics are altered in the contralateral knee of adults with osteoarthritis compared to asymptomatic adults J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-02-01 Sarah Remedios, Derek Rutherford
To compare knee joint muscle activity during gait between the contralateral limb of individuals with knee osteoarthritis (OA) and an asymptomatic older adult group. A secondary objective was to compare frontal and sagittal plane moment and sagittal plane motion features between groups. The contralateral knee showed prolonged lateral hamstring activation and altered temporal features of the gastrocnemius
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Treadmill induced belt-accelerations may not accurately evoke the muscle responses to obstacle trips in older people J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2024-01-23 Steven Phu, Daina L Sturnieks, Patrick YH Song, Stephen R Lord, Yoshiro Okubo
Background Treadmill belt-accelerations are commonly utilised as surrogate for tripping, but their physiological validity is unknown. This study examined if a treadmill belt-acceleration induces lower limb muscle activation responses similar to a trip on a walkway. Methods 38 older people (65+ years) experienced one treadmill belt-acceleration and one walkway obstacle trip in random order. Muscle responses
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Exercise combined with electrical stimulation for the treatment of chronic ankle instability – A randomized controlled trial J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-12-30 Uri Gottlieb, Roee Hayek, Jay R. Hoffman, Shmuel Springer
Purpose To compare the short, medium, and long-term effects of balance exercises combined with either peroneal neuromuscular electrical stimulation (NMES) or peroneal transcutaneous electrical nerve stimulation (TENS) on dynamic postural control and patient reported outcome measures (PROMs) in patients with chronic ankle instability (CAI). Methods Thirty-four participants with CAI were randomly assigned
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Understanding the Biering-Sørensen test: Contributors to extensor endurance in young adults with and without a history of low back pain J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-12-27 Jonathan Shaw, Jesse V. Jacobs, Linda R. Van Dillen, George J. Beneck, Jo Armour Smith
The Biering-Sørensen test is commonly used to assess paraspinal muscle endurance. Research using a single repetition of the test has provided conflicting evidence for the contribution of impaired paraspinal muscle endurance to low back pain (LBP). This study investigated how Sørensen test duration, muscle activation, and muscle fatigability are affected by multiple repetitions of the test and determined
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Postural stability assessment in expert versus amateur basketball players during optic flow stimulation J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-12-27 Alessandro Piras, Matteo Bertucco, Francesco Del Santo, Andrea Meoni, Milena Raffi
We evaluated the role of visual stimulation on postural muscles and the changes in the center of pressure (CoP) during standing posture in expert and amateur basketball players. Participants were instructed to look at a fixation point presented on a screen during foveal, peripheral, and full field optic flow stimuli. Postural mechanisms and motor strategies were assessed by simultaneous recordings
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Using force or EMG envelope as feedback signal for motor control system J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-30 M. Cogliati, A. Cudicio, C. Orizio
Purpose This work studied muscle neuro-mechanics during symmetrical up-going ramp (UGR) and down-going ramp (DGR). Aim: to evaluate during the modulation of muscular action the outcome of force feedback (FF) or neural feedback (NF) on the behavior of the trailing signals - i.e. the EMG envelope (eEMG) for FF or force signal for NF. Method Subjects: 20. Investigated muscles: dorsal interosseous (FDI)
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Effect of Exhaustive Exercise on Lumbopelvic-Hip Complex Stability, Muscle Activity, and Movement Patterns J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-12-02 Erika Zambarano, Neal Glaviano, Lucinda Bouillon, Grant Norte, Amanda Murray
This study aimed to evaluate the effect of exhaustive exercise on lumbopelvic-hip complex (LPHC) muscle activity, stability, and single-leg squat kinematics. Twenty-two healthy participants (12 females, 23.5 ± 3.1 years) were recruited. LPHC stability was measured by number of errors committed during a seated trunk control test (STCT). Surface electromyography recorded muscle activity of rectus abdominis
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Tutorial: Analysis of central and peripheral motor unit properties from decomposed High-Density surface EMG signals with openhdemg J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-30 Giacomo Valli, Paul Ritsche, Andrea Casolo, Francesco Negro, Giuseppe De Vito
High-Density surface Electromyography (HD-sEMG) is the most established technique for the non-invasive analysis of single motor unit (MU) activity in humans. It provides the possibility to study the central properties (e.g., discharge rate) of large populations of MUs by analysis of their firing pattern. Additionally, by spike-triggered averaging, peripheral properties such as MUs conduction velocity
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Falling decreased anterior cruciate ligament loading variables during single-leg landings after mid-flight external trunk perturbation J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-30 Yu Song, Ling Li, Jacob Layer, Gerwyn Hughes, Derek Smith, Margaret Wilson, Qin Zhu, Boyi Dai
Mid-flight external upper-trunk perturbation is associated with increased anterior cruciate ligament (ACL) injury risk during landing. This study aimed to assess the effect of natural, soft, and falling landing techniques on knee mechanics and vertical ground reaction forces (VGRF) during single-leg landings with/without mid-flight medial–lateral external upper-trunk pushing perturbation. Twenty-eight
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High-density surface electromyography allows to identify risk conditions and people with and without low back pain during fatiguing frequency-dependent lifting activities J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-04 Tiwana Varrecchia, Alberto Ranavolo, Giorgia Chini, Alessandro Marco De Nunzio, Francesco Draicchio, Eduardo Martinez-Valdes, Deborah Falla, Silvia Conforto
Low back pain (LBP) is a leading cause of disability in the workplace, often caused by manually lifting of heavy loads. Instrumental-based assessment tools are used to quantitatively assess the biomechanical risk of lifting activities. This study aims to verify that, during the execution of fatiguing frequency-dependent lifting, high-density surface electromyography (HDsEMG) allows the discrimination
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Fatigue task-dependent effect on spatial distribution of lumbar muscles activity J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-04 Emile Marineau-Bélanger, Martin Vaurs, Justin Roy, Julie O'Shaughnessy, Martin Descarreaux, Jacques Abboud
This study aims to identify how spatial distribution of lumbar muscle activity is modulated by different fatigue tasks. Twenty healthy adults performed two different isometric trunk extension endurance tasks (the modified Sorensen test and the inverted modified Sorensen test) until exhaustion. During these tasks, bilateral superficial lumbar muscle activity was recorded using high-density electromyography
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Fatigability of the thenar muscles using electrical nerve stimulation with fixed stimuli count, while varying the frequency and duty cycle J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-04 A. Gkesou, A. Papavasileiou, S. Karagiaridis, T. Kannas, I.G. Amiridis, V. Hatzitaki, D.A. Patikas
Our aim was to compare three electrical stimulation protocols (P20, P30 and P40), with the same number of stimuli, but different stimulation frequencies (20, 30 and 40 Hz, respectively) and duty cycles [1.2:1.2 s (continuous), 0.8:1.2 s (intermittent) and 0.6:1.2 s (intermittent), respectively). Twitch force and the peak-to-peak M-wave amplitude of the thenar muscles were measured before, during and
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The effect of prolonged walking on leg muscle activity patterns and vulnerability to perturbations J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-11-04 Yujin Kwon, Lillian K. Chilton, Hoon Kim, Jason R. Franz
Understanding the consequences and ecological relevance of muscle fatigue is important to guide the development of strategies to preserve independence. However, few studies have examined walking-related fatigue and the effects on walking instability. Our purpose was to investigate the effects of prolonged walking on leg muscle activity and vulnerability to balance perturbations. Eighteen healthy young
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Automatic selection of IMFs to denoise the sEMG signals using EMD J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-20 Pratap Kumar Koppolu, Krishnan Chemmangat
Surface Electromyography (sEMG) signals are muscle activation signals, which has applications in muscle diagnosis, rehabilitation, prosthetics, and speech etc. However, they are known to be affected by noises such as Power Line Interference (PLI), motion artifacts etc. Currently, Empirical Mode Decomposition (EMD) and its modifications such as Ensemble EMD (EEMD), and Complementary EEMD (CEEMD) are
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Does cross-education minimize the loss of muscle force and power and sEMG amplitude during short-term detraining in older women who are recreationally engaged in resistance training? J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-14 Daniel de Souza Teixeira, Marcelo A.S. Carneiro, Augusto Corrêa de Queiroz Freitas, Anderson Diogo de Souza Lino, Danyelle Pelet, Cláudio O. Assumpção, Markus Vinicius Campos Souza, Fábio Lera Orsatti
This study aimed to investigate whether 4 weeks of unilateral resistance training (RT) could attenuate the decline in muscle function in the contralateral limb of older women recreationally engaged in RT compared to control group (CTL). Twenty-four participants completed a 10-week RT before the cross-education (CR-Edu) phase and subsequent detraining. Afterward, participants were randomized into two
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Mechanical characteristic of supraspinatus muscle changes independent of its size and intramuscular fat in patient with rotator cuff repair J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-14 Jun Umehara, Yasuyuki Ueda, Masahide Yagi, Shusuke Nojiri, Takashi Tachibana, Katsuya Nobuhara, Noriaki Ichihashi
Purpose This study aimed i) to investigate the mechanical, morphological, and compositional characteristics of the supraspinatus muscle after rotator cuff repair by using ultrasound shear wave elastography (SWE) and B-mode imaging, and ii) to determine whether the morphological or compositional characteristics are associated with the mechanical characteristic of the supraspinatus during contraction
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Spinal kinematic variability is increased in people with chronic low back pain during a repetitive lifting task J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-14 Amal M. Alsubaie, Andy Sanderson, Hélio V. Cabral, Eduardo Martinez-Valdes, Deborah Falla
Changes in spinal kinematic variability have been observed in people with chronic non-specific LBP (CNSLBP) during the performance of various repetitive functional tasks. However, the direction of these changes (i.e., less or more kinematic variability) is not consistent. This study aimed to assess differences in kinematic variability of the 3D angular displacement of thoracic and lumbar spinal segments
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Different neuromuscular parameters are associated with knee abduction and hip adduction angles during functional tasks J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-14 Rodrigo Rabello, Claudia Brunetti, Filippo Bertozzi, Rodrigo Rodrigues, Chiarella Sforza
Knee abduction and hip adduction during functional tasks may indicate increased joint injury risk and discriminate between pathological and healthy people. Muscles’ neuromuscular variables such as amplitude (EMGAMP) and onset (EMGONSET) have been used to explain kinematics. The study aimed to evaluate the correlation between two EMG variables of seven trunk and lower limb muscles and 3D kinematics
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Trunk extensor muscle endurance and its relationship to action potential conduction velocity and spectral parameters estimated using high-density electromyography J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-12 Niels P. Brouwer, Ali Tabasi, Idsart Kingma, Dick F. Stegeman, Wietse van Dijk, Alejandro Moya-Esteban, Massimo Sartori, Jaap H. van Dieën
Trunk extensor muscle fatigue typically manifests as a decline in spectral content of surface electromyography. However, previous research on the relationship of this decline with trunk extensor muscle endurance have shown inconsistent results. The decline of spectral content mainly reflects the decrease in average motor unit action potential conduction velocity (CV). We evaluated whether the rate
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Does calibration pose improve scapular kinematic repeatability in functional tasks? J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-10-01 Angelica E. Lang
Tracking scapular motion can be challenging. More research is needed to determine the best practices for scapular measurement in multi-planar tasks. The purpose of this study was to compare the repeatability of scapular kinematics during a functional task protocol calculated from different calibration procedures. It was hypothesized that select poses would improve repeatability in specific tasks. The
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Footedness but not dominance influences force steadiness during isometric dorsiflexion in young men J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-29 Ivana Petrovic, Ioannis G. Amiridis, Theodoros Kannas, Zoi Tsampalaki, Ales Holobar, Chrysostomos Sahinis, Eleftherios Kellis, Daniel Stankovic, Roger M. Enoka
The aim of the study was to assess the potential influence of footedness and dominance on maximal force, force fluctuations and neural drive during dorsiflexion. Fifteen left-footed (LF) and fifteen right-footed (RF) young adults performed 2 maximal voluntary contractions (MVC) and 3 steady submaximal isometric contractions at five target forces (5, 10, 20, 40 and 60% MVC) with the dorsiflexors of
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Influence of transcutaneous electrical nerve stimulation on the distance walked by older adults during the 6-min test of walking endurance J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-21 Mohammed S. Alenazy, Rehab Al-Jaafari, Sajjad Daneshgar, Anneli Folkesson-Dey, Roger M. Enoka
The purpose of our study was to compare the influence of two types of transcutaneous electrical nerve stimulation (TENS) on the performance of older adults on the 6-min test of walking endurance and on the ability to maintain balance during upright standing. Twenty-six healthy older adults (72 ± 5.4 yrs) performed tests of motor function while TENS was applied to the tibialis anterior and rectus femoris
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Effect of knee joint angle on vastus medialis and vastus lateralis rigidity during isometric submaximal voluntary knee extensions J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-21 Jérémie Bouvier, Augustin C. Ogier, Cyril Martin, Alexandre Fouré
The use of shear wave elastography during voluntary contraction has enabled the non-invasive assessment of load sharing strategies between agonist muscles. However, the change in joint angle and voluntary contraction intensity can modify contribution between muscles. The aim of this study was to investigate the effect of knee joint angle on the local mechanical properties of the vastus medialis (VM)
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Spatial decomposition of ultrafast ultrasound images to identify motor unit activity – A comparative study with intramuscular and surface EMG J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-20 Robin Rohlén, Emma Lubel, Bruno Grandi Sgambato, Christian Antfolk, Dario Farina
The smallest voluntarily controlled structure of the human body is the motor unit (MU), comprised of a motoneuron and its innervated fibres. MUs have been investigated in neurophysiology research and clinical applications, primarily using electromyographic (EMG) techniques. Nonetheless, EMG (both surface and intramuscular) has a limited detection volume. A recent alternative approach to detect MUs
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Comparison of concentric and eccentric resistance training in terms of changes in the muscle contractile properties J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-07 Paweł Pakosz, Mariusz Konieczny, Przemysław Domaszewski, Tomasz Dybek, Mariusz Gnoiński, Elżbieta Skorupska
The habitual use of resistance exercises involving concentric and eccentric contractions can increase muscle strength, speed and endurance. However, current knowledge has limited potential to fully understand the application of such resistance training and the muscle changes that occur to differentiate these two types of training. The aim of this study was to compare the effects of concentric contraction
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The effect of back muscle fatigue on EMG and kinematics based estimation of low-back loads and active moments during manual lifting tasks J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-03 A. Tabasi, N.P. Brouwer, I. Kingma, W. van Dijk, M.P. de Looze, A. Moya-Esteban, H. v. d. Kooij, J.H. van Dieën
This study investigated the effects of back muscle fatigue on the estimation of low-back loads and active low-back moments during lifting, using an EMG and kinematics based model calibrated with data from an unfatigued state. Fourteen participants performed lifting tasks in unfatigued and fatigued states. Fatigue was induced through semi-static forward bending. EMG, kinematics, and ground reaction
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Reliability of lower leg muscle elasticity using shear wave elastography in non-weight-bearing and weight-bearing J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-09-01 David J. Kempfert, Katy Mitchell, Wayne Brewer, Christina Bickley, Garrett Mandel
Purpose Muscle elasticity can be quantified with shear wave elastography (SWE) and has been used as an estimate of muscle force but reliability has not been established for lower leg muscles. The purpose of this study was to examine the intra-rater and inter-rater reliability of elasticity measures in non-weight-bearing (NWB) and weight-bearing (WB) for the tibialis anterior (TA), tibialis posterior
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Joint pressure stimuli increase quadriceps strength and neuromuscular activity in patients with knee osteoarthritis J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-30 Federico Temporiti, Sara Moro, Paola Adamo, Roberto Gatti
The study investigated the effects of periarticular knee pressure stimuli on quadriceps strength and neuromuscular activity in subjects with knee osteoarthritis. Twenty-five subjects with knee osteoarthritis and 25 age-matched healthy controls performed maximal voluntary knee extension tasks on an isometric dynamometer. Three different pressure stimuli (no-pressure, 60-mmHg, 120-mmHg) were applied
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Validation of the filling factor index to study the filling process of the sEMG signal in the quadriceps J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-15 Javier Rodriguez-Falces, Armando Malanda, Cristina Mariscal, Imran Khan Niazi, Javier Navallas
Introduction The EMG filling factor is an index to quantify the degree to which an EMG signal has been filled. Here, we tested the validity of such index to analyse the EMG filling process as contraction force was slowly increased. Methods Surface EMG signals were recorded from the quadriceps muscles of healthy subjects as force was gradually increased from 0 to 40% MVC. The sEMG filling process was
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Regional differences in behaviors of fascicle and tendinous tissue of the biceps femoris long head during hamstring exercises J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-15 Chen Li, Ye Liu
The biceps femoris long head (BFLH) gains its properties from internal elements (fascicles and tendinous tissues) which behaviors remain poorly understood across BFLH regions and dynamic tasks. The aim of this study was to assess the in vivo behaviors of fascicles and tendinous tissue in the proximal and distal regions of BFLH during different dynamic knee and hip tasks. Twenty males performed the
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Automated spatial localization of ankle muscle sites and model-based estimation of joint torque post-stroke via a wearable sensorised leg garment J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-07 Donatella Simonetti, Maartje Hendriks, Joost Herijgers, Carmen Cuerdo del Rio, Bart Koopman, Noel Keijsers, Massimo Sartori
Assessing a patient’s musculoskeletal function during over-ground walking is a primary objective in post-stroke rehabilitation, due to the importance of walking recovery for everyday life. However, the quantitative assessment of musculoskeletal function currently requires lab-constrained equipment, and labor-intensive analyses, which hampers assessment in standard clinical settings. The development
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Athletes with a History of ACL Reconstruction Exhibit Greater Inter-Limb Asymmetry in Impact Forces During the First Landing of a Drop Vertical Jump Compared to the Second Landing J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-02 Adam VanZile, Matthew Snyder, Daniel Jones, Thomas Gus Almonroeder
The primary objective of this study was to examine the degree of inter-limb asymmetry in impact force magnitudes and rates during the first and second landings of a drop vertical jump in adolescent athletes with a history of anterior cruciate ligament (ACL) reconstruction. We also compared the degree of asymmetry exhibited by the athletes who had undergone ACL reconstruction to a group of uninjured
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Tutorial. Surface electromyogram (sEMG) amplitude estimation: Best practices J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-02 Edward A. Clancy, Evelyn L. Morin, Gelareh Hajian, Roberto Merletti
This tutorial intends to provide insight, instructions and “best practices” for those who are novices—including clinicians, engineers and non-engineers—in extracting electromyogram (EMG) amplitude from the bipolar surface EMG (sEMG) signal of voluntary contractions. A brief discussion of sEMG amplitude extraction from high density sEMG (HDsEMG) arrays and feature extraction from electrically elicited
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Surface electromyographic frequency characteristics of the quadriceps differ between continuous high- and low-torque isometric knee extension to momentary failure J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-02 Jonathan Murphy, Emma Hodson-Tole, Andrew D. Vigotsky, Jim R. Potvin, James P. Fisher, James Steele
Surface EMG (sEMG) has been used to compare loading conditions during exercise. Studies often explore mean/median frequencies. This potentially misses more nuanced electrophysiological differences between exercise tasks. Therefore, wavelet-based analysis was used to evaluate electrophysiological characteristics in the sEMG signal of the quadriceps under both higher- and lower-torque (70 % and 30 %
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Sex differences in knee extensor torque control J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-08-02 Savanna Harrison, Nicholas C. Clark, Paul Ansdell, Jamie Pethick
There is currently equivocal evidence regarding sex-related differences in measures of muscle force and torque control. To that end, we investigated sex differences in knee extensor muscle torque control, using both magnitude- and complexity-based measures, across contraction intensities typical of activities of daily living. 50 participants (25 male, median age [and interquartile range] 23.0 [20.0–33
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The effects of biofeedback training for efficient activation of infraspinatus on proprioception and EMG activity during shoulder external rotation J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-06-28 Il-Young Yu, Min-Joo Ko, Jae-Seop Oh
The purpose of this study investigated which biofeedback (BF) training enables efficient activation of the infraspinatus muscle that affect joint position sense (JPS) and force sense (FS) of the shoulder joint. Twenty healthy males participated and performed three external rotation (ER) exercises under three randomly assigned training conditions: 1) non-biofeedback (NBF), 2) BF and 3) force biofeedback
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Ultrafast ultrasound imaging can be used to access single motor units in deep muscles, but the underlying biomechanical source remains to be understood J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-06-17 Christer Grönlund, Robin Rohlén
Abstract not available
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Hip muscle activity in people with hip-related pain compared to asymptomatic controls: A systematic review J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-06-07 Christopher Stewart, Matthew G. King, Joanne L. Kemp, Benjamin F. Mentiplay, Michael JM. O'Brien, Zuzana Perraton, Peter R. Lawrenson, Adam I. Semciw
Background Altered hip and thigh muscle activity have been observed across a spectrum of articular hip pathologies, including hip osteoarthritis, femoroacetabular impingement syndrome, and labral pathology. No systematic reviews have examined muscle activity associated with hip pathology and hip-related pain across the life span. A greater understanding of impairments in hip and thigh muscle activity
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Task-related differences in peroneus longus muscle fiber conduction velocity J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-29 Guillermo Mendez-Rebolledo, Rodrigo Guzmán-Venegas, Ignacio Orozco-Chavez, Carlos Cruz-Montecinos, Kohei Watanabe, Eduardo Martinez-Valdes
It has been identified that the peroneus longus presents a regional activity. Specifically, a greater activation of the anterior and posterior compartments has been observed during eversion, whereas a lower activation of the posterior compartment has been reported during plantarflexion. In addition to myoelectrical amplitude, motor unit recruitment can be inferred indirectly from muscle fiber conduction
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Evolution of surface electromyography: From muscle electrophysiology towards neural recording and interfacing J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-06-01 Dario Farina, Roger M. Enoka
Surface electromyography (EMG) comprises a recording of electrical activity from the body surface generated by muscle fibres during muscle contractions. Its characteristics depend on the fibre membrane potentials and the neural activation signal sent from the motor neurons to the muscles. EMG has been classically used as the primary investigation tool in kinesiology studies in a variety of applications
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Ageing and joint position sense of the asymptomatic shoulder: An observational study J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-29 Timon H. Geurkink, Celeste L. Overbeek, Perla J. Marang-van de Mheen, Jochem Nagels, Rob G.H.H. Nelissen, Jurriaan H. de Groot
Purpose This study aimed to quantify the extent to which age was associated with joint position sense (JPS) of the asymptomatic shoulder as measured by joint position reproduction (JPR) tasks and assess the reproducibility of these tasks. Methods 120 Asymptomatic participants aged 18–70 years each performed 10 JPR-tasks. Both contralateral and ipsilateral JPR-tasks were evaluated on accuracy of JPR
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Role of kinesiophobia in the selective motor control during gait in patients with low back-related leg pain J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-30 Rodrigo Núñez-Cortés, Giselle Horment-Lara, Claudio Tapia-Malebran, Martín Castro, Sebastián Barros, Nicolás Vera, Sofía Pérez-Alenda, Juan Pablo Santelices, Gonzalo Rivera-Lillo, Carlos Cruz-Montecinos
Fear of movement has been related to changes in motor function in patients with low back pain, but little is known about how kinesiophobia affects selective motor control during gait (ability of muscles performing distinct mechanical functions) in patients with low back-related leg pain (LBLP). The aim of the study was to determine the association between kinesiophobia and selective motor control in
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Trunk control in and out of an episode of recurrent low back pain in young adults during the Balance-Dexterity Task J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-29 Hai-Jung Steffi Shih, Joyce Ai, Justin Abe, Jiaxi Tang, K. Michael Rowley, Linda R. Van Dillen, Kornelia Kulig
We investigated motor control strategies utilized by individuals with recurrent low back pain (rLBP) during active pain and remission periods as well as by back-healthy controls using the Balance-Dexterity Task. Nineteen young adults with rLBP were tested first when they were in pain and then again in symptom remission, and 19 matched controls were also tested. Trunk kinematic coupling and muscle co-activation
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Impact of the contraction of medial forearm muscles during grip tasks in different forearm positions on medial support at the elbow joint J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-22 Hiroaki Koizumi, Mineo Oyama, Masahiro Odagiri, Noriyuki Shioda, Chihiro Fujime, Nozomu Kusano
We measured the medial joint distance (MJD), activity of muscles involved in medial elbow-joint support, and grip strength, aiming to examine the supportfunction of muscles. MJD was measured in supinated and pronated positions of the forearm of 10 participants under three conditions: at rest (R), under valgus load on the elbow joint (L), and under valgus load on the elbow joint during the grip task
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The effect of skilled motor training on corticomotor control of back muscles in different presentations of low back pain J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-22 Muath A Shraim, Hugo Massé-Alarie, Sauro E Salomoni, Paul W Hodges
Transcranial magnetic stimulation (TMS) has revealed differences in the motor cortex (M1) between people with and without low back pain (LBP). There is potential to reverse these changes using motor skill training, but it remains unclear whether changes can be induced in people with LBP or whether this differs between LBP presentations. This study (1) compared TMS measures of M1 (single and paired-pulse)
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Functional relationship between the foot intrinsic and extrinsic muscles in walking J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-05-20 Hiroshi Akuzawa, Tsuyoshi Morito, Tomoki Oshikawa, Tsukasa Kumai, Koji Kaneoka
The intrinsic and extrinsic muscles are considered to stabilize the foot and contribute to propulsion during walking. This study aimed to clarify the functional relationship between intrinsic and extrinsic muscles during walking. Thirteen healthy men participated in this study. The muscle activities of the intrinsic muscles (quadratus plantae and abductor hallucis), and the extrinsic muscles (flexor
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Association between force fluctuation during isometric ankle abduction and variability of neural drive in peroneus muscles J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-04-28 Shun Kunugi, Tetsuya Hirono, Akane Yoshimura, Aleš Holobar, Kohei Watanabe
Analyzing motor unit (MU) activities of peroneus muscles may reveal the causes of force control deficits of ankle eversion. This study aimed to examine peroneus muscles’ MU discharge characteristics and associations between force fluctuation and variability of the neural drive in healthy participants. Thirty-one healthy males participated in this study. MU activities were identified from high-density
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Effects of gender and fatigue on strength and activity of gluteus medius muscle during a controlled cutting maneuver in preadolescent athletes J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-04-28 G. Jonasson, M.H. Ghasemi, U.S. Jonsdottir, K. Briem, P. Sveinsson
The present study aimed to investigate the effects of gender on hip muscle strength and activity during a controlled cutting maneuver in preadolescent athletes. Fifty-six football and handball preadolescent players participated (35 females and 21 males). Normalized mean activity of the gluteus medius (GM) muscle was measured using surface electromyography during cutting maneuvers in pre-activation
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Estimating and minimizing movement artifacts in surface electromyogram J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-04-25 Ilhan Karacan, Betilay Topkara Arslan, Ayşe Karaoglu, Tugba Aydin, Simon Gray, Pekcan Ungan, Kemal S. Türker
While recording surface electromyography [sEMG], it is possible to record the electrical activities coming from the muscles and transients in the half-cell potential at the electrode–electrolyte interface due to micromovements of the electrode–skin interface. Separating the two sources of electrical activity usually fails due to the overlapping frequency characteristics of the signals. This paper aims
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Supervised exercise with or without laser-guided feedback for people with non-specific chronic low back pain. A randomized controlled clinical trial J. Electromyogr. Kinesiol. (IF 2.5) Pub Date : 2023-04-24 A. Caña-Pino, M.D. Apolo-Arenas, D. Falla, E. Lluch-Girbés, L. Espejo-Antúnez
Background Among the most effective therapeutic interventions in non-specific chronic low back pain (NSCLBP), clinical practice guidelines highlight exercise therapy and patient education; However, regarding the combined intervention of exercise and Pain Neuroscience Education (PNE), there is no consensus on the most effective form of exercise. Objetive To find out what changes occurred after the application