Patients with chronic, but not episodic, migraine display altered activity of their neck extensor muscles
The current study aimed to investigate differences in activity of neck flexor and extensor muscles in women with migraine considering the chronicity of their condition. Thirty-one subjects with episodic migraine, 21 with chronic migraine and 31 healthy controls participated. Surface electromyography signals were recorded bilaterally from the sternocleidomastoid, anterior scalene, splenius capitis and upper trapezius muscles as subjects performed 5 stages of cranio-cervical flexion (CCF), representing a progressive increase in range of CCF motion. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 8, 2016 Category: Neurology Authors: Lidiane L. Florencio, Anamaria S. Oliveira, Tenysson W. Lemos, Gabriela F. Carvalho, Fabiola Dach, Marcelo E. Bigal, Deborah Falla, C ésar Fernández-de-las-Peñas, Débora Bevilaqua-Grossi Source Type: research

Patients With Chronic, but not Episodic, Migraine Display Altered Activity of Their Neck Extensor Muscles
The current study aimed to investigate differences in activity of neck flexor and extensor muscles in women with migraine considering the chronicity of their condition. Thirty-one subjects with episodic migraine, 21 with chronic migraine and 31 healthy controls participated. Surface electromyography signals were recorded bilaterally from the sternocleidomastoid, anterior scalene, splenius capitis and upper trapezius muscles as subjects performed 5 stages of cranio-cervical flexion (CCF), representing a progressive increase in range of CCF motion. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 8, 2016 Category: Neurology Authors: Lidiane L. Florencio, Anamaria S. de Oliveira, Tenysson W.Lemos, Gabriela F. Carvalho, Fabiola Dach, Marcelo E. Bigal, Deborah Falla, César Fernández-de-las-Peñas, Débora Bevilaqua- Grossi Source Type: research

Neuromuscular performance of Bandal Chagui: Comparison of subelite and elite taekwondo athletes
With the aim of comparing kinematic and neuromuscular parameters of Bandal Chagui kicks between 7 elite and 7 subelite taekwondo athletes, nine Bandal Chaguis were performed at maximal effort in a selective reaction time design, simulating the frequency of kicks observed in taekwondo competitions. Linear and angular leg velocities were recorded through 3D motion capture system. Ground reaction forces (GRF) were evaluated by a force platform, and surface electromyographic (sEMG) signals were evaluated in the vastus lateralis, biceps femoris, rectus femoris, tensor fasciae lata, adductor magnus, gluteus maximus, gluteus medi...
Source: Journal of Electromyography and Kinesiology - June 2, 2016 Category: Neurology Authors: Pedro Vieira Sarmet Moreira, M árcio Fagundes Goethel, Mauro Gonçalves Source Type: research

Neuromuscular performance of bandal chagui: Comparison of subelite and elite taekwondo athletes
With the aim of comparing kinematic and neuromuscular parameters of Bandal Chagui kicks between 7 elite and 7 subelite taekwondo athletes, nine Bandal Chaguis were performed at maximal effort in a selective reaction time design, simulating the frequency of kicks observed in taekwondo competitions. Linear and angular leg velocities were recorded through 3D motion capture system. Ground reaction forces (GRF) were evaluated by a force platform, and surface electromyographic (sEMG) signals were evaluated in the vastus lateralis, biceps femoris, rectus femoris, tensor fasciae lata, adductor magnus, gluteus maximus, gluteus medi...
Source: Journal of Electromyography and Kinesiology - June 2, 2016 Category: Neurology Authors: Pedro Vieira Sarmet Moreira, Márcio Fagundes Goethel, Mauro Gonçalves Source Type: research

Decreasing the required lumbar extensor moment induces earlier onset of flexion relaxation
This study was designed to: (1) determine if decreasing the lumbar moment during flexion would induce FR to occur earlier; (2) characterize thoracic and abdominal muscle activity during FR. Ten male participants performed four trunk flexion/extension movement conditions; lumbar moment was altered by attaching 0, 5, 10, or 15lb counterweights to the torso. Electromyography (EMG) was recorded from eight trunk muscles. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 27, 2016 Category: Neurology Authors: Derek P. Zwambag, Diana E. De Carvalho, Stephen H.M. Brown Source Type: research

Decreasing the required lumbar extensor moment induces earlier onset of flexion relaxation
This study was designed to: 1) determine if decreasing the lumbar moment during flexion would induce FR to occur earlier; 2) characterize thoracic and abdominal muscle activity during FR. Ten male participants performed four trunk flexion/extension movement conditions; lumbar moment was altered by attaching zero, five, ten, or 15 lb counterweights to the torso. Electromyography (EMG) was recorded from eight trunk muscles. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 27, 2016 Category: Neurology Authors: Derek P. Zwambag, Diana E. De Carvalho, Stephen H.M. Brown Source Type: research

Muscle mechanical properties of strength and endurance athletes and changes after one week of intensive training
The study investigates whether tensiomyography (TMG) is sensitive to differentiate between strength and endurance athletes, and to monitor fatigue after either one week of intensive strength (ST) or endurance (END) training. Fourteen strength (24.1 ±2.0years) and eleven endurance athletes (25.5±4.8years) performed an intensive training period of 6days of ST or END, respectively. ST and END groups completed specific performance tests as well as TMG measurements of maximal radial deformation of the muscle belly (Dm), deformation time between 1 0% and 90% Dm (Tc), rate of deformation development until 10% Dm (V10) and 90% D...
Source: Journal of Electromyography and Kinesiology - May 26, 2016 Category: Neurology Authors: Rauno Álvaro de Paula Simola, Christian Raeder, Thimo Wiewelhove, Michael Kellmann, Tim Meyer, Mark Pfeiffer, Alexander Ferrauti Source Type: research

Muscle mechanical properties of strength and endurance athletes and changes after one week of intensive training
The study investigates whether tensiomyography (TMG) is sensitive to differentiate between strength and endurance athletes, and to monitor fatigue after either one week of intensive strength (ST) or endurance (END) training. Fourteen strength (24.1 ± 2.0 years) and eleven endurance athletes (25.5 ± 4.8 years) performed an intensive training period of 6 days of ST or END, respectively. ST and END groups completed specific performance tests as well as TMG measurements of maximal radial deformation of the muscle belly (Dm), deformation time between 10% and 90% Dm (Tc), rate of deformation development until 10% Dm (V10) and ...
Source: Journal of Electromyography and Kinesiology - May 26, 2016 Category: Neurology Authors: Rauno Á.P. Simola, Christian Raeder, Thimo Wiewelhove, Michael Kellmann, Tim Meyer, Mark Pfeiffer, Alexander Ferrauti Source Type: research

Braking characteristics during cutting and pivoting in female soccer players
Most biomechanical studies into changing direction focus on final contact (FC), whilst limited research has examined penultimate contact (PEN). The aim of this study was to explore the kinematic and kinetic differences between PEN and FC of cutting and pivoting in 22 female soccer players (mean ±SD; age: 21±3.1years, height: 1.68±0.07m, mass: 58.9±7.3kg). Furthermore, the study investigated whether horizontal force–time characteristics during PEN were related to peak knee abduction moments during FC. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 23, 2016 Category: Neurology Authors: Paul A. Jones, Lee Herrington, Philip Graham-Smith Source Type: research

Effects of suboccipital release with craniocervical flexion exercise on craniocervical alignment and extrinsic cervical muscle activity in subjects with forward head posture
Forward head posture is a head-on-trunk malalignment, which results in musculoskeletal dysfunction and neck pain. To improve forward head posture, both the craniocervical flexion exercise and the suboccipital release technique have been used. Objectives: The purpose of this study was to compare the immediate effects of craniocervical flexion exercise and suboccipital release combined with craniocervical flexion exercise on craniovertebral angle, cervical flexion and extension range of motion, and the muscle activities of the sternocleidomastoid, anterior scalene, and splenius capitis during craniocervical flexion exercise ...
Source: Journal of Electromyography and Kinesiology - May 23, 2016 Category: Neurology Authors: Bo-Been Kim, Ji-Hyun Lee, Hyo-Jung Jeong, Heon-Seock Cynn Source Type: research

Braking Characteristics during Cutting and Pivoting in Female Soccer Players
Most biomechanical studies into changing direction focus on final contact (FC), whilst limited research has examined penultimate contact (PEN). The aim of this study was to explore the kinematic and kinetic differences between PEN and FC of cutting and pivoting in 22 female soccer players (mean ± SD; age: 21 ± 3.1 years, height: 1.68 ± 0.07 m, mass: 58.9 ± 7.3 kg). Furthermore, the study investigated whether horizontal force-time characteristics during PEN were related to peak knee abduction moments during FC. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 23, 2016 Category: Neurology Authors: Paul A. Jones, Lee Herrington, Philip Graham-Smith Source Type: research

Effects of Suboccipital Release with Craniocervical Flexion Exercise on Craniocervical Alignment and Extrinsic Cervical Muscle Activity in Subjects with Forward Head Posture
Forward head posture is a head-on-trunk malalignment, which results in musculoskeletal dysfunction and neck pain. To improve forward head posture, both the craniocervical flexion exercise and the suboccipital release technique have been used. Objectives: The purpose of this study was to compare the immediate effects of craniocervical flexion exercise and suboccipital release combined with craniocervical flexion exercise on craniovertebral angle, cervical flexion and extension range of motion, and the muscle activities of the sternocleidomastoid, anterior scalene, and splenius capitis during craniocervical flexion exercise ...
Source: Journal of Electromyography and Kinesiology - May 23, 2016 Category: Neurology Authors: Bo-Been Kim, Ji-Hyun Lee, Hyo-Jung Jeong, Heon-Seock Cynn Source Type: research

Sex differences in jaw muscle duty factors during exercise in two environments: A pilot study
It is unknown if females and males use jaw muscles similarly during exercise. This pilot study assessed jaw elevator muscle duty factors (DFs=time of muscle activity/total recording time) at repeated sessions to test if DFs are reliable and different between sexes during exercises in two environments. Ten female and seven male subjects recruited from university soccer teams provided informed consent. Surface electromyography was recorded from masseter and temporalis muscles during biting and leg-extension laboratory exercises. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 17, 2016 Category: Neurology Authors: Adam K. Reynolds, Jeffrey C. Nickel, Ying Liu, Danielle K. Leeper, Kelsey M. Riffel, Hongzeng Liu, Laura R. Iwasaki Source Type: research

Comparison of EMG activity on abdominal muscles during plank exercise with unilateral and bilateral additional isometric hip adduction
The aim of this study was to investigate the effects of additional isometric hip adduction during the plank exercise on the abdominal muscles. Twenty healthy young men participated in this study. Surface electromyography (EMG) was used to monitor the activity of the bilateral rectus abdominis (RA), the internal oblique (IO), and the external oblique (EO) muscles. The participants performed three types of plank exercise; the standard plank exercise, the plank exercise with bilateral isometric hip adduction, and the plank exercise with unilateral isometric hip adduction. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - May 10, 2016 Category: Neurology Authors: Soo-Yong Kim, Min-Hyeok Kang, Eui-Ryong Kim, In-Gui Jung, Eun-Young Seo, Jae-seop Oh Source Type: research