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.

How reliable are lower limb biomechanical variables during running and cutting tasks
The purpose of this study was to compare the within- and between-days reliability of lower limb biomechanical variables collected during running and cutting tasks. Methods: 15 recreational athletes, 7 males and 8 females, took part in three testing sessions, two sessions on the same day with an hour gap and another session one week later. Kinematic and kinetic data during running and 90 ° side step cutting tasks gathered using a ten-camera motion analysis system (Qualisys) and a force platform (AMTI) embedded into the floor. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 30, 2016 Category: Neurology Authors: Faisal Alenezi, Lee Herrington, Paul Jones, Richard Jones 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

How Reliable are lower limb biomechanical variables during running and cutting tasks
The cutting manoeuvre has been shown to be a mechanism that can cause non-contact anterior cruciate ligament injuries (Besier et al., 2001; Havens and Sigward, 2014a; Vanrenterghem et al., 2012). Previous literature has assessed lower limb biomechanics during side-step cutting tasks using three-dimensional (3D) motion analysis (Havens and Sigward, 2014b; Houck et al., 2005; Imwalle et al., 2009; Jones et al., 2014; Kristianslund et al., 2012a; Kristianslund and Krosshaug, 2013; Marshall et al., 2014; Pollard et al., 2007). (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 30, 2016 Category: Neurology Authors: Faisal Alenezi, Lee Herrington, Paul Jones, Richard Jones Source Type: research

Two novel methods to assess ulnar nerve conduction across the elbow
Nerve conduction studies (NCS) are used as an electrodiagnostic method for diagnosing ulnar neuropathy of the elbow (UNE). The purpose of this study was to determine normal and reliability values of across elbow ulnar nerve conduction velocity using two novel methods. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 23, 2016 Category: Neurology Authors: Gregory Ernst, Jennifer Canales, Elizabeth Garcia Source Type: research

Two Novel Methods to Assess Ulnar Nerve Conduction Across the Elbow
Nerve conduction studies (NCS) are used as an electrodiagnostic method for diagnosing ulnar neuropathy of the elbow (UNE). The purpose of this study was to determine normal and reliability values of across elbow ulnar nerve conduction velocity using two novel methods. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 23, 2016 Category: Neurology Authors: Gregory Ernst, Jennifer Canales, Elizabeth Garcia Source Type: research

Effects of whole body vibration on muscle contractile properties in exercise induced muscle damaged females
Determining muscle contractile properties following exercise is critical in understanding neuromuscular function. Following high intensity training, individuals often experience exercise induced muscle damage (EIMD). The purpose of this investigation was to determine the effect of whole-body vibration (WBV) on muscle contractile properties following EIMD. Twenty-seven females volunteered for 7 sessions and were randomly assigned to a treatment or control group. Muscle contractile properties were assessed via voluntary torque (VT), peak twitch torque (TT), time to reach peak torque, half relaxation time of twitch torque, pe...
Source: Journal of Electromyography and Kinesiology - June 21, 2016 Category: Neurology Authors: Nicole C. Dabbs, Christopher D. Black, John C. Garner Source Type: research

Effects of Whole Body Vibration on Muscle Contractile Properties in Exercise Induced Muscle Damaged Females
Determining muscle contractile properties following exercise is critical in understanding neuromuscular function. Following high intensity training, individuals often experience exercise induced muscle damage (EIMD). The purpose of this investigation was to determine the effect of whole-body vibration (WBV) on muscle contractile properties following EIMD. Twenty-seven females volunteered for 7 sessions and were randomly assigned to a treatment or control group. Muscle contractile properties were assessed via voluntary torque (VT), peak twitch torque (TT), time to reach peak torque, half relaxation time of twitch torque, pe...
Source: Journal of Electromyography and Kinesiology - June 21, 2016 Category: Neurology Authors: Nicole C. Dabbs, Christopher D. Black, John C. Garner Source Type: research

Trunk muscle reflexes are elicited by small continuous perturbations in healthy subjects and patients with low-back pain
Low-back pain (LBP) has been recognized as the leading cause of disability worldwide. Lumbar instability has been considered as an important mechanism of LBP and one potential contributor to lumbar stability is trunk muscle reflex activity. However, due to the differences in experimental paradigms used to quantify trunk mechanics and trunk reflexes it remains unclear as to what extent the reflex pathway contributes to overall lumbar stability. The goal of this work was to determine to what extent reflexes of various trunk muscles were elicited by the small continuous perturbations normally used to quantify trunk mechanics....
Source: Journal of Electromyography and Kinesiology - June 17, 2016 Category: Neurology Authors: Daniel Ludvig, Christian Larivi ère Source Type: research

Running related gluteus medius function in health and injury: A systematic review with meta-analysis
Running is a popular sport and recreational physical activity worldwide. Musculoskeletal injuries in runners are common and may be attributed to the inability to control pelvic equilibrium in the coronal plane. This lack of pelvic control in the frontal plane can stem from dysfunction of the gluteus medius. The aim of this systematic review was therefore to: (i) compile evidence of the activity profile of gluteus medius when running; (ii) identify how gluteus medius activity (electromyography) varies with speed, cadence and gender when running; (iii) compare gluteus medius activity in injured runners to matched controls. (...
Source: Journal of Electromyography and Kinesiology - June 16, 2016 Category: Neurology Authors: Adam Semciw, Racheal Neate, Tania Pizzari Source Type: research

Medial gastrocnemius muscle-tendon interaction and architecture change during exhaustive hopping exercise
Background: Previous literature has shown in vivo changes in muscle-tendon interaction during exhaustive stretch-shortening cycle (SSC) exercise. It is unclear whether these changes in muscle-tendon length during exhaustive SSC exercise are associated with changes in mechanical efficiency (ME). The purpose of the study was to investigate whether changes in platarflexor contractile component (CC) length, tendon length, and changes in plantarflexor muscle activity could explain reduction in ME during exhaustive SSC exercise. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 16, 2016 Category: Neurology Authors: Daniel E. Lidstone, Herman van Werkhoven, Justin A. Stewart, Reed Gurchiek, Madison Burris, Paige Rice, Garrett Feimster, Jeffrey M. McBride Source Type: research

Running Related Gluteus Medius Function in Health and Injury: A Systematic Review with Meta-analysis
Running is a popular sport and recreational physical activity worldwide. Musculoskeletal injuries in runners are common and may be attributed to the inability to control pelvic equilibrium in the coronal plane. This lack of pelvic control in the frontal plane can stem from dysfunction of the gluteus medius. The aim of this systematic review was therefore to: (i) compile evidence of the activity profile of gluteus medius when running; (ii) identify how gluteus medius activity (electromyography) varies with speed, cadence and gender when running; (iii) compare gluteus medius activity in injured runners to matched controls. (...
Source: Journal of Electromyography and Kinesiology - June 16, 2016 Category: Neurology Authors: Adam Semciw, Racheal Neate, Tania Pizzari Source Type: research

Medial gastrocnemius muscle-tendon interaction and architecture change during exhaustive hopping exercise
Previous literature has shown in-vivo changes in muscle-tendon interaction during exhaustive stretch-shortening cycle (SSC) exercise. It is unclear whether these changes in muscle-tendon length during exhaustive SSC exercise are associated with changes in mechanical efficiency (ME). The purpose of the study was to investigate whether changes in plantarflexor contractile component (CC) length, tendon length, and changes in plantarflexor muscle activity could explain reduction in ME during exhaustive SSC exercise. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 16, 2016 Category: Neurology Authors: Daniel E. Lidstone, Herman van Werkhoven, Justin A. Stewart, Reed Gurchiek, Madison Burris, Paige Rice, Garrett Feimster, Jeffrey M. McBride Source Type: research

Muscle synergies during bench press are reliable across days
Muscle synergies have been investigated during different types of human movement using nonnegative matrix factorization. However, there are not any reports available on the reliability of the method. To evaluate between-day reliability, 21 subjects performed bench press, in two test sessions separated by approximately 7days. The movement consisted of 3 sets of 8 repetitions at 60% of the three repetition maximum in bench press. Muscle synergies were extracted from electromyography data of 13 muscles, using nonnegative matrix factorization. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 10, 2016 Category: Neurology Authors: Mathias Kristiansen, Afshin Samani, Pascal Madeleine, Ernst Albin Hansen Source Type: research

Muscle synergies during bench press are reliable across days
Muscle synergies have been investigated during different types of human movement using nonnegative matrix factorization. However, there are not any reports available on the reliability of the method. To evaluate between-day reliability, 21 subjects performed bench press, in two test sessions separated by approximately 7 days. The movement consisted of 3 sets of 8 repetitions at 60% of the three repetition maximum in bench press. Muscle synergies were extracted from electromyography data of 13 muscles, using nonnegative matrix factorization. (Source: Journal of Electromyography and Kinesiology)
Source: Journal of Electromyography and Kinesiology - June 10, 2016 Category: Neurology Authors: Mathias Kristiansen, Afshin Samani, Pascal Madeleine, Ernst Albin Hansen Source Type: research