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.

Effect of Valgus Knee Alignment on Gait Biomechanics in Healthy Women
The purpose of this study was to compare lower extremity kinematics and kinetics between women with greater or lesser degrees of valgus knee alignment during gait. Nine women with greater valgus knee alignment (11.9 ±1.6o) were compared to nine women with lesser valgus knee alignment (6.6±2.4o). Participants completed a biomechanical assessment of overground walking for the right limb. Dependent variables included sagittal and frontal plane joint angles and moments for the hip, knee, and ankle at peak vertica l ground reaction force, along with knee abduction angular impulse. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 19, 2017 Category: Neurology Authors: Matthew C. Hoch, Joshua T. Weinhandl Source Type: research

Directional preference of activation of abdominal and paraspinal muscles during position-control tasks in sitting
This study aimed to systematically compare activation of a range of trunk muscles between directions of statically applied loads, and to consider the impact of breathing in this activation. In a semi-seated position, 13 healthy male participants resisted moderate inertial loads applied to the trunk in eight different directions. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 17, 2017 Category: Neurology Authors: Martin Eriksson Crommert, Kylie Tucker, Christopher Holford, Alexander Wight, Donna McCook, Paul Hodges Source Type: research

Standards for Reporting EMG Data
(Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 3, 2017 Category: Neurology Source Type: research

Improving surface EMG burst detection in infrahyoid muscles during swallowing using digital filters and discrete wavelet analysis
The visual inspection is a widely used method for evaluating the surface electromyographic signal (sEMG) during deglutition, a process highly dependent of the examiners expertise. It is desirable to have a less subjective and automated technique to improve the onset detection in swallowing related muscles, which have a low signal-to-noise ratio. In this work, we acquired sEMG measured in infrahyoid muscles with high baseline noise of ten healthy adults during water swallowing tasks. Two methods were applied to find the combination of cutoff frequencies that achieve the most accurate onset detection: discrete wavelet decomp...
Source: Journal of Electromyography and Kinesiology - May 3, 2017 Category: Neurology Authors: Sebastian Restrepo-Agudelo, Sebastian Roldan-Vasco, Lina Ramirez-Arbelaez, Santiago Cadavid-Arboleda, Estefania Perez-Giraldo, Andres Orozco-Duque Source Type: research

Whole-body vibration induces distinct reflex patterns in human soleus muscle
The neuronal mechanisms underlying whole body vibration (WBV)-induced muscular reflex (WBV-IMR) are not well understood. To define a possible pathway for WBV-IMR, this study investigated the effects of WBV amplitude on WBV-IMR latency by surface electromyography analysis of the soleus muscle in human adult volunteers. The tendon (T) reflex was also induced to evaluate the level of presynaptic Ia inhibition during WBV. WBV-IMR latency was shorter when induced by low- as compared to medium- or high-amplitude WBV (33.9 ± 5.3 ms vs. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - April 24, 2017 Category: Neurology Authors: Ilhan Karacan, Muharrem Cidem, Mehmet Cidem, Kemal S. T ürker Source Type: research

External loading alters trunk kinematics and lower extremity muscle activity in a distribution-specific manner during sitting and rising from a chair
Excess body mass alters gait biomechanics in a distribution-specific manner. The effects of adding mass centrally or peripherally on biomechanics during sitting and rising from a chair are unknown. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - April 23, 2017 Category: Neurology Authors: Michelle C. Walaszek, Amanda L. Ransom, Steven Capehart, Michael B. Pohl, Robert Shapiro, Lance M. Bollinger Source Type: research

The reliability and criterion validity of 2D video assessment of single leg squat and hop landing
The objective was to assess the intra-tester, within and between day reliability of measurement of hip adduction (HADD) and frontal plane projection angles (FPPA) during single leg squat (SLS) and single leg landing (SLL) using 2D video and the validity of these measurements against those found during 3D motion capture. 15 healthy subjects had their SLS and SLL assessed using 3D motion capture and video analysis. Inter-tester reliability for both SLS and SLL when measuring FPPA and HADD show excellent correlations (ICC2,1 0.97-0.99). (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - April 17, 2017 Category: Neurology Authors: Lee Herrington, Faisal Alenezi, Msaad Alzhrani, Hasan Alrayani, Richard Jones Source Type: research

Reproducibility of scapular muscle activity in isokinetic shoulder flexion and extension
Repetitive overhead movements have been identified as a main risk factor to develop shoulder complaints with scapular muscle activity being altered. Reliable assessment of muscle activity is essential to differentiate between symptomatic and asymptomatic individuals. Therefore, the present study aimed to investigate the intra- and inter-session reliability of scapular muscle activity during maximal isokinetic shoulder flexion and extension. Eleven asymptomatic adults performed maximum effort isokinetic shoulder flexion and extension (concentric and eccentric at 60 °/sec) in a test-retest design. (Source: Journal of Electr...
Source: Journal of Electromyography and Kinesiology - April 14, 2017 Category: Neurology Authors: Monique Wochatz, Sophie Rabe, Martin Wolter, Tilman Engel, Steffen Mueller, Frank Mayer Source Type: research

Inter-joint coordination of posture on a seesaw device
Even though specific adjustments of the multi-joint control of posture have been observed when posture is challenged, multi-joint coordination on a seesaw device has never been accurately assessed. The current study was conducted in order to investigate the multi-joint coordination when subjects were standing on either a seesaw device or on a stable surface, with the eyes open or closed. Eighteen healthy active subjects were recruited. A principal component analysis and a Self-Organizing Maps analysis were performed on the joint angles in order to detect and characterize dominant coordination patterns. (Source: Journal of ...
Source: Journal of Electromyography and Kinesiology - April 8, 2017 Category: Neurology Authors: Fr édéric Noé, Xavier García-Massó, Thierry Paillard Source Type: research

The effect of age and knee osteoarthritis on muscle activation patterns and knee joint biomechanics during dual belt treadmill gait
To compare a group of individuals with moderate medial compartment knee osteoarthritis (OA) to both an age-matched asymptomatic group of older adults and younger adults to determine whether differences in knee joint muscle activation patterns and joint biomechanics exist during gait between these three groups. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - April 6, 2017 Category: Neurology Authors: Derek Rutherford, Matt Baker, Ivan Wong, William Stanish Source Type: research

The relationship of corticospinal excitability with pain, motor performance and disability in subjects with chronic wrist/hand pain
There is a growing body of evidence of changes in corticospinal excitability associated with musculoskeletal disorders, however there is a lack of knowledge of how these changes relate to measures of pain, motor performance and disability. An exploratory study was performed utilizing Transcranial Magnetic Stimulation to investigate differences in corticospinal excitability in the Abductor Pollicis Brevis (APB) between 15 pain-free subjects and 15 subjects with chronic wrist/hand pain and to determine how corticospinal excitability was associated with measures of pain (visual analog scale, AUSCANTM), hand motor performance ...
Source: Journal of Electromyography and Kinesiology - April 6, 2017 Category: Neurology Authors: Ren é Pelletier, Johanne Higgins, Daniel Bourbonnais Source Type: research

Standards for Reporting EMG Data
(Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - April 1, 2017 Category: Neurology Source Type: research

The effect of inspiratory and expiratory loads on abdominal muscle activity during breathing in subjects “at risk” for the development of chronic obstructive pulmonary disease and healthy
This study aims to evaluate the effect of inspiratory and expiratory loads on the abdominal muscle activity during breathing in subjects “at risk” for the development of COPD and healthy . (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - March 31, 2017 Category: Neurology Authors: Ant ónio Mesquita Montes, Carlos Crasto, Cristina Argel de Melo, Rita Santos, Susana Pereira, João Paulo Vilas-Boas Source Type: research

Two degrees of freedom quasi-static EMG-force at the wrist using a minimum number of electrodes
Surface electromyogram-controlled powered hand/wrist prostheses return partial upper-limb function to limb-absent persons. Typically, one degree of freedom (DoF) is controlled at a time, with mode switching between DoFs. Recent research has explored using large-channel EMG systems to provide simultaneous, independent and proportional (SIP) control of two joints —but such systems are not practical in current commercial prostheses. Thus, we investigated site selection of a minimum number of conventional EMG electrodes in an EMG-force task, targeting four sites for a two DoF controller. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - March 28, 2017 Category: Neurology Authors: Edward A. Clancy, Carlos Martinez-Luna, Marek Wartenberg, Chenyun Dai, Todd R. Farrell Source Type: research

Interplay between body stabilisation and quadriceps muscle activation capacity
The study aimed to distinguish the effect of stabilisation and muscle activation on quadriceps maximal isometric voluntary contraction (MVC) torque generation. Nine subjects performed a) an MVC with restrained leg and pelvis (Typical MVC), b) a Typical MVC with handgrip (Handgrip MVC), c) an MVC focusing on contracting the knee extensors only (Isolated knee extension MVC), and d) an MVC with unrestrained leg and pelvis (Unrestrained MVC). Torque and activation capacity between conditions were compared with repeated measures ANOVA and dependent t-tests. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - March 22, 2017 Category: Neurology Authors: Theodoros M. Bampouras, Neil D. Reeves, Vasilios Baltzopoulos, Constantinos N. Maganaris Source Type: research