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The Hypoalgesic Effect Of Tens During Needle Emg Study, Wang-Lin Su, Hsuan-Yi Lin, Gwo-Chi Hu

Rehabilitation Practice and Science

Needle electromyography (EMG) is an important diagnostic and prognostic tool in physical medicine. However, some patients are unable to tolerate the pain associated with the procedure. While there has been research in methods aimed at reducing the pain from needle EMG, all have obvious disadvantages.TENS is a widely accepted tool for producing analgesia, but it has not been studied as an analgesic adjunct to needle EMG. We designed a double-blind, randomized, placebo-controlled study to investigate the effectiveness of TENS on alleviating the pain during a needle EMG study.Fifty-nine subjects undergoing needle EMG study in an upper extremity were randomly assigned …

Thinking, Feeling And Discriminating: The Role Of Prejudice As A Mediator Between Stereotypes And Discrimination, John Patrick Ryan

Psychology Theses

Relationships between implicit measures of stereotyping (using subliminal semantic priming) and implicit measures of prejudice (using facial electromyography) were examined in both Black and White participants. Race of the participant showed a trend towards moderating the relationship between priming bias scores and EMG bias to face stimuli and the relationship between priming bias scores and EMG bias. There were nonsignificant relationships between priming bias scores and differences in application ratings for Black and White applicants. The issue of statistical power is discussed as a possible explanation for nonsignificance.

Contributions Of Muscle Fatigue To A Neuromuscular Neck Injury In Female Standard Ballroom Dancers, Teri Riding

Theses and Dissertations

Objective: To investigate the potential etiology of a loss of neck control injury in female standard ballroom dancers. The median frequency (MF) as measured by electromyography (EMG) of the left upper trapezius (UT), left splenius capitius (SPL), and right sternocleidomastoid (SCM) of injured dancers was compared to non-injured dancers. This comparison was performed to identify whether dancers with a history of loss of neck control have a greater amount of fatigue than those with no history of this particular injury. Design and Setting: A 2 x 6 factorial design was used for this investigation. The independent variables were group (injured …

Robotic Surgery And Training: Electromyographic Correlates Of Robotic Laparoscopic Training, Timothy N. Judkins, D. Oleynikov, N. Karazaki, Nikolaos Stergiou

Journal Articles

Background: Robotic laparoscopic surgery has been shown to decrease task completion time, reduce errors, and decrease training time when compared to manual laparoscopic surgery. However, current literature has not addressed physiological effects, in particular muscle responses, to training with a robotic surgical system. We seek to determine the frequency response of electromyographic (EMG) signals of specific arm and hand muscles with training using the da Vinci Surgical System (dVSS).

Methods: Seven right-handed medical students were trained in three tasks with da Vinci Surgical System over four weeks. These subjects, along with eight controls, were tested before and after …

An Electromyographic Study Of Upper Trapezius, Lower Trapezius, And Serratus Anterior Muscle Activity During Traditional And Modified Muscle Testing Positions, Jace Everett, Mike Fowler, Jason Haak, Robby Luck

Physical Therapy Scholarly Projects

Purpose: The purpose of this study is to assess the muscle activity of the shoulder joint force couple induced by the upper trapezius, lower trapezius, and serratus anterior to determine if they are more effectively recruited during the traditional exercise position of forward shoulder elevation in 145° of shoulder abduction versus a modified position of shoulder external rotation while in 80° of shoulder abduction and 90° of elbow flexion

Methods: Nine participants took part in this randomized study in which EMG data was collected during 4 exercise trials of 10 repetitions each on the right shoulder. EMG activity was monitored …

Guillain-Barré Syndrome Due To Hepatitis A, Selçuk Çomoğlu, Mustafa Cesur

Turkish Journal of Medical Sciences

Guillain-Barré syndrome (GBS) is reported frequently following hepatotrophic viruses, but its occurrence due to the hepatitis A virus has been rarely reported to date. We present a case of serologically positive acute hepatitis A infection associated with GBS. There was an increased protein level in the cerebrospinal fluid and prolonged nerve conduction, with minimal axonal damage findings in electromyography.

Reliability Of Normalisation Methods For Emg Analysis Of Neck Muscles, Kevin Netto, Angus F Burnett

Research outputs pre 2011

Acceptable reliability of normalisation contractions in electromyography (EMG) is paramount for testing conducted over a number of days or if normal laboratory strength testing equipment is unavailable. This study examined the reliability of maximal voluntary isometric contractions (MVIC) and sub-maximal (60%) isometric contractions for use in neck muscle EMG studies. Surface EMG was recorded bilaterally from eight sites around the neck at C4/5 level from five healthy male subjects. Subjects performed MVIC and sub-maximal normalisation contractions using an isokinetic dynamometer (ID) and a portable cable dynamometer with attached strain gauge (PCD) in addition to a MVIC against a manual resistance …

The Role Of Lower Leg Muscle Activity In Blood Pressure Maintenance Of Older Adults, Michelle M. Masterson, Amy L. Morgan, Christine E. Multer, Daniel Cipriani

Physical Therapy Faculty Articles and Research

Purpose. Age-associated muscle weakness, postural instability, and orthostatic hypotension have been identified as contributing factors to falls , but the relationships among them are not clear. Therefore, the purpose of this study, a two-way factorial design, was to investigate the differences in lower extremity (LE) muscle activity, blood pressure (BP), and heart rate (HR) between young and older individuals in an upright position. Methods. Ten young males (20-24 yrs.) and 10 older males (65-82 yrs.) stood for 15 minutes while BP, HR, and LE electromyography (EMG) were recorded at one minute intervals . A two-way ANOVA was used …

Loading And Recovery Behavior Of The Human Lumbar Spine Under Static Flexion, Guntulu Selen Hatipkarasulu

LSU Doctoral Dissertations

Musculoskeletal disorders account for 32 percent of work related injuries and illnesses. Extensive studies have been conducted to understand and explore the factors that affect the development of musculoskeletal disorders to provide effective control strategies. One of the most important factors that allow effective control strategies is the biomechanical factors. Among the biomechanical risk factors, exposures to repetitive static and vibratory activities are known to result in musculoskeletal disorders. A ligamento–muscular reflex activity exists in humans and animals to stabilize the knee, shoulder, elbow, ankle joints, and spine. This reflex activity decreases over time when static loading is applied, which …

Biomechanical Characteristics Of Low Back Tissues During Trunk Flexion-Extension, Michael William Olson

LSU Doctoral Dissertations

Analysis of the mechanical and neural regulatory mechanisms of the flexion-relaxation phenomenon (FRP), observed in deep trunk flexion, was performed since it is believed these mechanisms provide insight into the causes of low back injury and pain. Three methods were used to analyze the behavior of the lumbar tissues during trunk flexion-extension exercises: 1) active continuous cyclic movement, 2) acute cyclic movement at different orientations, and 3) passive continuous cyclic movement. All activities were performed at a rate of 0.1 Hz (6 cycles•min-1) while monitoring the surface electromyography (EMG) of the lumbar paraspinal muscles. Abdominal, hamstring, and quadriceps muscle activities …