Journal of Electromyography and Kinesiology This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Electromyographic analysis of muscle activation during pull-up variations
This study sought to identify any differences in peak muscle activation (EMGPEAK) or average rectified variable muscle activation (EMGARV) during supinated grip, pronated grip, neutral grip and rope pull-up exercises. Nineteen strength trained males (24.9 ± 5 y; 1.78 ± 0.74 m; 81.3 ± 11.3 kg; 22.7 ± 2.5 kg·m¯2) volunteered to participate in the study. Surface electromyography (EMG) was collected from eight shoulder-arm-forearm complex muscles. All muscle activation was expressed as a percentage of maximum voluntary isometric contraction (%MVIC) . (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - November 27, 2016 Category: Neurology Authors: James A. Dickie, James A. Faulkner, Matthew J. Barnes, Sally D. Lark Source Type: research

Can mastication in children with cerebral palsy be analyzed by clinical observation, dynamic ultrasound and 3D kinematics?
The aim of this study was to explore the feasibility of the Mastication Observation and Evaluation (MOE) instrument, dynamic ultrasound and 3D kinematic measurements to describe mastication in children with spastic cerebral palsy and typically developing children. Masticatory movements during five trials of eating a biscuit were assessed in 8 children with cerebral palsy, spastic type (mean age 9;08 years) and 14 typically developing children (mean age 9;01 years). Differences between trials were tested (t-test) and the mastication of individual children with cerebral palsy was analyzed. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - November 27, 2016 Category: Neurology Authors: L. Remijn, B.E. Groen, R. Speyer, J. van Limbeek, J.A. Vermaire, L. van den Engel-Hoek, M.W.G. Nijhuis-van der Sanden Source Type: research

Biomechanics of simulated versus natural cross-country sit skiing
The purpose of this study was to investigate the biomechanics of cross-country sit-skiing in simulated and natural skiing. Thirteen international level athletes participated in a ski ergometer test (simulated conditions) and a test on snow in a ski-tunnel (natural conditions) using their personal sit-ski. Tests in both conditions were performed at individual maximal speed. When comparing the two conditions the main results were: 1) maximal speed in simulated conditions was lower (p (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - November 10, 2016 Category: Neurology Authors: V. Rosso, L. Gastaldi, W. Rapp, S. Lindinger, Y. Vanlandewijck, V. Linnamo Source Type: research

Effects of fatigue on lower limb, pelvis and trunk kinematics and muscle activation: Gender differences
Muscle fatigue is associated with biomechanical changes that may lead to anterior cruciate ligament (ACL) injuries. Alterations in trunk and pelvis kinematics may also be involved in ACL injury. Although some studies have compared the effects of muscle fatigue on lower limb kinematics between men and women, little is known about its effects on pelvis and trunk kinematics. The aim of the study was to compare the effects of fatigue on lower limb, pelvis and trunk kinematics and muscle activation between men and women during landing. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - November 7, 2016 Category: Neurology Authors: Giovanna Camparis Lessi, Ana Fl ávia dos Santos, Luis Fylipe Batista, Gabriela Clemente de Oliveira, Fábio Viadanna Serrão Source Type: research

Landing from different heights: Biomechanical and neuromuscular strategies in trained gymnasts and untrained prepubescent girls
The purpose of this study was to examine the biomechanics4 of the lower limb, during landing in female prepubertal gymnasts and prepubertal untrained girls, aged 9-12 years. Ten healthy participants were included in each group and performed five landings from 20, 40, and 60 cm. Kinematics, ground reaction forces (GRF) and electromyogram (EMG) from the lateral gastrocnemius, tibialis anterior, and vastus lateralis are presented. Gymnasts had higher vertical GRF and shorter braking phase during landing. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - November 7, 2016 Category: Neurology Authors: Α. Christoforidou, D. Patikas, E. Bassa, I. Paraschos, S. Lazaridis, C. Christoforidis, C. Kotzamanidis Source Type: research

Spatial Distribution of Surface EMG on trapezius and lumbar muscles of Violin and Cello Players in Single Note Playing
Musicians activate their muscles in different patterns, depending on their posture, the instrument being played, and their experience level. Bipolar surface electrodes have been used in the past to monitor such activity, but this method is highly sensitive to the location of the electrode pair. In this work, the spatial distribution of surface EMG (sEMG) of the right trapezius and right and left erector spinae muscles were studied in 16 violin players and 11 cello players. Musicians played their instrument one string at a time in sitting position with/without backrest support. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - October 30, 2016 Category: Neurology Authors: Babak Afsharipour, Francesco Petracca, Mauro Gasparini, Roberto Merletti Source Type: research

Are chronic neck pain, scapular dyskinesis and altered scapulothoracic muscle activity interrelated?: A case-control study with surface and fine-wire EMG
The function of the scapula is important in normal neck function and might be disturbed in patients with neck pain. The surrounding muscular system is important for the function of the scapula. To date, it is not clear if patients with idiopathic neck pain show altered activity of these scapulothoracic muscles. Therefore, the objective of this study was to investigate differences in deeper and superficial lying scapulothoracic muscle activity between patients with idiopathic neck pain and healthy controls during arm elevation, and to identify the influence of scapular dyskinesis on muscle activity. (Source: Journal of Elec...
Source: Journal of Electromyography and Kinesiology - October 18, 2016 Category: Neurology Authors: BIRGIT CASTELEIN, ANN COOLS, THIERRY PARLEVLIET, BARBARA CAGNIE Source Type: research

Professor Carlo J. De Luca (1943 –2016)
Prof. Carlo J. De Luca, a pioneer in the field of electromyography and kinesiology, passed away Wednesday, July 20,2016 at the age of 72. Prof. De Luca has made lasting contributions to ISEK and its membership. He assisted Dr. John Basmajian in setting up the initial structure of ISEK. He twice served as past president of ISEK (1988, 1990) and organized the highly successful ISEK 1979 Congress in Boston. Under his presidency he established the Journal of Electromyography& Kinesiology and served as its Editor-in-Chief. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - October 16, 2016 Category: Neurology Source Type: research

Professor Carlo J. De Luca (1943-2016)
Prof. Carlo J. De Luca, a pioneer in the field of electromyography and kinesiology, passed away Wednesday, July 20,2016 at the age of 72. Prof. De Luca has made lasting contributions to ISEK and its membership. He assisted Dr. John Basmajian in setting up the initial structure of ISEK. He twice served as past president of ISEK (1988,1990) and organized the highly successful ISEK 1979 Congress in Boston. Under his presidency he established the Journal of Electromyography& Kinesiology and served as its Editor-in-Chief. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - October 16, 2016 Category: Neurology Source Type: research

Cutaneous silent period evoked in human first dorsal interosseous muscle motor units by laser stimulation
In this study, we employed probability- and frequency-based analysis methods to examine the CSP induced by laser stimuli. Subjects were asked to contract their first dorsal interosseous muscle so that selected motor units discharged at a rate of about 8 Hz. Laser pulses were delivered to the palm of the hand, and reflex responses were recorded. The stimuli generated CSP in all test subjects. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - October 13, 2016 Category: Neurology Authors: Mehmet Cemal Kahya, O ğuz Sebik, Kemal S. Türker Source Type: research

The influence of digital filter type, amplitude normalisation method, and co-contraction algorithm on clinically relevant surface electromyography data during clinical movement assessments
There is a large and growing body of surface electromyography (sEMG) research using laboratory-specific signal processing procedures (i.e., digital filter type and amplitude normalisation protocols) and data analyses methods (i.e., co-contraction algorithms) to acquire practically meaningful information from these data. As a result, the ability to compare sEMG results between studies is, and continues to be challenging. The aim of this study was to determine if digital filter type, amplitude normalisation method, and co-contraction algorithm could influence the practical or clinical interpretation of processed sEMG data. (...
Source: Journal of Electromyography and Kinesiology - October 12, 2016 Category: Neurology Authors: Daniel Devaprakash, Gillian J. Weir, James J. Dunne, Jacqueline A. Alderson, Cyril J. Donnelly Source Type: research

Characteristics of EMG frequency bands in temporomandibullar disoders patients
The aim of the present study was to determine whether any specific frequency bands of surface electromyographic (sEMG) signals are more susceptible to alterations in patients with temporomandibular disorders (TMD), when compared with healthy subjects. Twenty-seven healthy adults (19 women and eight men; mean age: 23 ±6.68years) and 27 TMD patients (20 women and seven men; mean age: 24±5.89years) voluntarily participated in the experiment. sEMG data were recorded from the right and left masseter muscles (RM and LM) and the right and left anterior temporalis muscles (RT and LT) as the participants performed tes ts of chewi...
Source: Journal of Electromyography and Kinesiology - October 12, 2016 Category: Neurology Authors: Fabiano Politti, Claudia Casellato, Marcelo Martins Kalytczak, Marilia Barbosa Santos Garcia, Daniela Aparecida Biasotto-Gonzalez Source Type: research

The influence of digital filter type, amplitude normalisation method and co-contraction algorithm on clinically relevant surface electromyography data during clinical movement assessments
There is a large and growing body of surface electromyography (sEMG) research using laboratory-specific signal processing procedures (i.e., digital filter type and amplitude normalisation protocols) and data analyses methods (i.e., co-contraction algorithms) to acquire practically meaningful information from these data. As a result, the ability to compare sEMG results between studies is, and continues to be challenging. The aim of this study was to determine if digital filter type, amplitude normalisation method and co-contraction algorithm can influence the practical or clinical interpretation of processed sEMG data. (Sou...
Source: Journal of Electromyography and Kinesiology - October 12, 2016 Category: Neurology Authors: Daniel Devaprakash, Gillian J. Weir, James J. Dunne, Jacqueline A. Alderson, Cyril J. Donnelly Source Type: research

The Influence of Knee Alignment on Lower Extremity Kinetics During Squats
The squat is an assessment of lower extremity alignment during movement, however there is little information regarding altered joint kinetics during poorly performed squats. The purpose of this study was to examine changes in joint kinetics and power from altered knee alignment during a squat. Thirty participants completed squats while displacing the knee medially, anteriorly, and with neutral alignment (control). Sagittal and frontal plane torques at the ankle, knee, and hip were altered in the descending and ascending phase of the squat in both the medial and anterior malaligned squat compared to the control squat. (Sour...
Source: Journal of Electromyography and Kinesiology - October 12, 2016 Category: Neurology Authors: Lindsay V. Slater, Joseph M. Hart Source Type: research

The effects of squatting footwear on three-dimensional lower limb and spine kinetics
Altering footwear worn during performance of the barbell back squat has been shown to change motion patterns, but it is not completely understood how this affects biomechanical loading demands. The primary objective was to compare lower back and extremity net joint moments in 24 experienced weightlifters (12M, 12F) who performed 80% one-repetition maximum back squats under three different footwear conditions (barefoot, running shoes, weightlifting shoes). Results showed that there was a significant main effect of footwear condition on the knee extension moment (p= 0.001), where the running and weightlifting shoes produced ...
Source: Journal of Electromyography and Kinesiology - October 12, 2016 Category: Neurology Authors: Daniel J. Southwell, Shane A. Petersen, Tyson A.C. Beach, Ryan B. Graham Source Type: research