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.

Tendon reflex is suppressed during whole-body vibration
In this study we have investigated the effect of whole body vibration (WBV) on the tendon reflex (T-reflex) amplitude. Fifteen young adult healthy volunteer males were included in this study. Records of surface EMG of the right soleus muscle and accelerometer taped onto the right Achilles tendon were obtained while participant stood upright with the knees in extension, on the vibration platform. Tendon reflex was elicited before and during WBV. Subjects completed a set of WBV. Each WBV set consisted of six vibration sessions using different frequencies (25, 30, 35, 40, 45, 50 Hz) applied randomly. (Source: Journal of Elect...
Source: Journal of Electromyography and Kinesiology - July 22, 2016 Category: Neurology Authors: Ilhan Karacan, Muharrem Cidem, Gizem Yilmaz, Oguz Sebik, Halil Ibrahim Cakar, Kemal S ıtkı Türker Source Type: research

Effects of active pause pattern of surface electromyographic activity among subjects performing monotonous tasks: A systematic review
Active pauses have shown potentially beneficial effects to increase the variability of the electrical activation pattern of muscles. However, there is a lack of consensus as to how to design and implement those pauses and the processing methods of surface electromyography (EMG) data when evaluating low-level monotonous tasks. The aim of this systematic review was to synthesize the evidences regarding the way which active pauses have been applied, and the methods used to investigate the related EMG changes. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 22, 2016 Category: Neurology Authors: Leticia Bergamin Januario, Roberta de F átima Carreira Moreira, Marina Machado Cid, Afshin Samani, Pascal Madeleine, Ana Beatriz Oliveira Source Type: research

The effect of repetitive ankle perturbations on muscle reaction time and muscle activity
The use of a tilt platform to simulate a lateral ankle sprain and record muscle reaction time is a well-established procedure. However, a potential caveat is that repetitive ankle perturbation may cause a natural attenuation of the reflex latency and amplitude. This is an important area to investigate as many researchers examine the effect of an intervention on muscle reaction time. Muscle reaction time, peak and average amplitude of the peroneus longus and tibialis anterior in response to a simulated lateral ankle sprain (combined inversion and plantar flexion movement) were calculated in twenty-two physically active part...
Source: Journal of Electromyography and Kinesiology - July 13, 2016 Category: Neurology Authors: Peter Kevin Thain, Gerwyn Trefor Gareth Hughes, Andrew Charles Stephen Mitchell Source Type: research

The Effect of Repetitive Ankle Perturbations on Muscle Reaction Time and Muscle Activity
The use of a tilt platform to simulate a lateral ankle sprain and record muscle reaction time is a well-established procedure. However, a potential caveat is that repetitive ankle perturbation may cause a natural attenuation of the reflex latency and amplitude. This is an important area to investigate as many researchers examine the effect of an intervention on muscle reaction time. Muscle reaction time, peak and average amplitude of the peroneus longus and tibialis anterior in response to a simulated lateral ankle sprain (combined inversion and plantarflexion movement) were calculated in twenty-two physically active parti...
Source: Journal of Electromyography and Kinesiology - July 13, 2016 Category: Neurology Authors: Peter Kevin Thain, Gerwyn Trefor Gareth Hughes, Andrew Charles Stephen Mitchell Source Type: research

Are regions of the lumbar multifidus differentially activated during walking at varied speed and inclination?
This study aimed to determine activation patterns for deep and superficial multifidus in young adults during walking at different speeds and inclination. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 12, 2016 Category: Neurology Authors: Rebecca J. Crawford, Leonardo Gizzi, Áine Ni Mhuiris, Deborah Falla Source Type: research

Effects of general fatigue induced by incremental maximal exercise test on gait stability and variability of healthy young subjects
The purpose of this study was to determine whether general fatigue induced by incremental maximal exercise test (IMET) affects gait stability and variability in healthy subjects. Twenty-two young healthy male subjects walked in a treadmill at preferred walking speed for 4min prior (PreT) the test, which was followed by three series of 4min of walking with 4min of rest among them. Gait variability was assessed using walk ratio (WR), calculated as step length normalized by step frequency, root mean square (RMSratio) of trunk acceleration, standard deviation of medial-lateral trunk acceleration between strides (VARML), coeffi...
Source: Journal of Electromyography and Kinesiology - July 12, 2016 Category: Neurology Authors: Marcus Fraga Vieira, Gustavo Souto de S á e Souza, Georgia Cristina Lehnen, Fábio Barbosa Rodrigues, Adriano O. Andrade Source Type: research

Are regions of the lumbar multifidus differentially activated during walking at varied speed and inclination?
This study aimed to determine activation patterns for deep and superficial multifidus in young adults during walking at different speeds and inclination. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 12, 2016 Category: Neurology Authors: Rebecca J Crawford, Leonardo Gizzi, Áine Ni Mhuiris, Deborah Falla Source Type: research

Effects of General Fatigue Induced by Incremental Maximal Exercise Test on Gait Stability and Variability of Healthy Young Subjects
The purpose of this study was to determine whether general fatigue induced by incremental maximal exercise test (IMET) affects gait stability and variability in healthy subjects. Twenty-two young healthy male subjects walked in a treadmill at preferred walking speed for 4 minutes prior (PreT) the test, which was followed by three series of 4 minutes of walking with 4 minutes of rest among them. Gait variability was assessed using walk ratio (WR), calculated as step length normalized by step frequency, root mean square (RMSratio) of trunk acceleration, standard deviation of medial-lateral trunk acceleration between strides ...
Source: Journal of Electromyography and Kinesiology - July 12, 2016 Category: Neurology Authors: Marcus Fraga Vieira, Gustavo Souto de Sá e Souza, Georgia Crisitna Lehnen, Fábio Barbosa Rodrigues, Adriano O. Andrade Source Type: research

Neuromuscular response of the trunk to sudden gait disturbances: Forward vs. backward perturbation
The study aimed to analyse neuromuscular activity of the trunk comparing four different perturbations during gait.Thirteen subjects (28 ±3yrs) walked (1m/s) on a split-belt treadmill, while 4 (belt) perturbations (F1, F2, B1, B2) were randomly applied. Perturbations differed, related to treadmill belt translation, in direction (forward (F)/backward (B)) and amplitude (20m/s2 (1)/40m/s2 (2)). Trunk muscle activity was assessed with a 12-lead-EMG. EMG-RMS [%] (0–200ms after perturbation; normalized to RMS of normal gait) was analyzed for muscles and four trunk areas (ventral left/right; dorsal left/right). (Source: Journa...
Source: Journal of Electromyography and Kinesiology - July 10, 2016 Category: Neurology Authors: Juliane Mueller, Tilman Engel, Steffen Mueller, Stephan Kopinski, Heiner Baur, Frank Mayer Source Type: research

Neuromuscular response of the trunk to sudden gait disturbances: forward vs. backward perturbation
The study aimed to analyze neuromuscular activity of the trunk comparing four different perturbations during gait. Thirteen subjects (28±3yrs) walked (1m/s) on a split-belt treadmill, while 4 (belt) perturbations (F1,F2,B1,B2) were randomly applied. Perturbations differed, related to treadmill belt translation, in direction (forward (F)/backward (B)) and amplitude (20m/s2 (1) /40m/s2 (2)). Trunk muscle activity was assessed with a 12-lead-EMG. EMG-RMS [%] (0-200ms after perturbation; normalized to RMS of normal gait) was analyzed for muscles and four trunk areas (ventral left/right; dorsal left/right). (Source: Journal of...
Source: Journal of Electromyography and Kinesiology - July 10, 2016 Category: Neurology Authors: Juliane Mueller, Tilman Engel, Steffen Mueller, Stephan Kopinski, Heiner Baur, Frank Mayer Source Type: research

Torque steadiness and muscle activation are bilaterally impaired during shoulder abduction and flexion in chronic post-stroke subjects
To characterize sensorimotor control and muscle activation in the shoulder of chronic hemiparetic during abduction and flexion in maximal and submaximal isometric contractions. Furthermore, to correlate submaximal sensorimotor control with motor impairment and degree of shoulder subluxation. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 5, 2016 Category: Neurology Authors: Gabriela Lopes Santos, Luisa Fernanda Garc ía-Salazar, Matheus Bragança Souza, Ana Beatriz Oliveira, Paula Rezende Camargo, Thiago Luiz Russo Source Type: research

Abdominal muscle activity during breathing with and without inspiratory and expiratory loads in healthy subjects
Central Nervous System modulates the motor activities of all trunk muscles to concurrently regulate the intra-abdominal and intra-thoracic pressures. The study aims to evaluate the effect of inspiratory and expiratory loads on abdominal muscle activity during breathing in healthy subjects. Twenty-three high school students (21.09 ±1.56years; 8males) breathed at a same rhythm (inspiration: two seconds; expiration: four seconds) without load and with 10% of the maximal inspiratory or expiratory pressures, in standing. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 4, 2016 Category: Neurology Authors: Ant ónio Mesquita Montes, João Baptista, Carlos Crasto, Cristina Argel de Melo, Rita Santos, João Paulo Vilas-Boas Source Type: research

Abdominal muscle activity during breathing with and without inspiratory and expiratory loads in healthy subjects
Central Nervous System modulates the motor activities of all trunk muscles to concurrently regulate the intra-abdominal and intrathoracic pressures. The study aims to evaluate the effect of inspiratory and expiratory loads on abdominal muscle activity during breathing in healthy subjects. Twenty-three high school students (21.09±1.56 years; 8 males) breathed at a same rhythm (inspiration: two seconds; expiration: four seconds) without load and with 10% of the maximal inspiratory or expiratory pressures, in standing. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - July 4, 2016 Category: Neurology Authors: António Mesquita Montes, João Baptista, Carlos Crasto, Cristina Argel de Melo, Rita Santos, João Paulo Vilas-Boas Source Type: research

Subject-specific thumb muscle activity during functional tasks of daily life
The trapeziometacarpal joint is subjected to high compressive forces during powerful pinch and grasp tasks due to muscle loading. In addition, muscle contraction is important for stability of the joint. The aim of the present study is to explore if different muscle activation patterns can be found between three functional tasks. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 30, 2016 Category: Neurology Authors: Faes D. Kerkhof, Gertjan Deleu, Priscilla D ’Agostino, Evie E. Vereecke Source Type: research