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https://www.readbyqxmd.com/read/28645664/muscle-activity-and-masticatory-efficiency-with-bilateral-extension-base-removable-partial-dentures-with-different-cusp-angles
#1
Mahmoud K Al-Omiri
STATEMENT OF PROBLEM: Whether masticatory efficiency and electromyographic activity are influenced by type of artificial teeth and food is unclear. PURPOSE: The purpose of this clinical study was to evaluate the influence of extension base removable partial dentures (RPDs) with different cusp angles: anatomic (33 degrees), semianatomic (20 degrees), and nonanatomic (0 degrees) teeth on masticatory efficiency and muscle activity during the mastication of test foods with different textures...
June 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28645094/quality-assessment-of-shoulder-plyometric-exercises-examining-the-relationship-to-scapular-muscle-activity
#2
Maya Calé-Benzoor, Annelies Maenhout, Michal Arnon, Gershon Tenenbaum, Mia Werrin, Ann Cools
OBJECTIVES: The purpose of the study was to evaluate performance quality of shoulder plyometric exercises, and examine the relationship to scapular muscle activation during an intense exercise bout. DESIGN: Observational study. SETTING: University laboratory. PARTICIPANTS: 32 healthy university students (male/female: 14/18) volunteers. MAIN OUTCOME MEASURES: Subjects performed 10 plyometric exercises...
May 12, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28643919/mechanobehaviour-in-dolichofacial-and-brachyfacial-adolescents
#3
J C Nickel, A L Weber, P Covington Riddle, Y Liu, H Liu, L R Iwasaki
OBJECTIVES: To test whether mechanobehaviour (temporomandibular joint (TMJ) loads, jaw muscle use) was different between facial types and correlated with ramus height (Condylion-Gonion, mm). SETTING AND SAMPLE POPULATION: University of Missouri-Kansas City (UMKC) Orthodontic Clinic. Ten dolichofacial and ten brachyfacial adolescents (Sella-Nasion-Gonion-Gnathion (SN-GoGn) angles ≥37° and ≤27°, respectively) consented to participate. MATERIALS AND METHODS: Numerical models calculated TMJ loads for a range of static biting based on subjects' three-dimensional anatomy...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28639056/relevance-of-the-clinical-and-psychophysiological-variables-in-the-dyssynergic-defecation-a-comparative-study-in-elderly-subjects
#4
Miguel A Simón, Ana M Bueno
The relevance of several clinical and psychophysiological variables in the dyssynergic defecation in elderly subjects was investigated in this study. To accomplish this, 30 elderly subjects (10 without anorectal disorders, 10 with chronic constipation and 10 with dyssynergic defecation) were repeatedly assessed once per week for 4 weeks, with the following measures being collected at each session: EMG-activity (µV) of the external anal sphincter (at rest, during squeezing, and during straining to defecate), stool frequency, difficulty defecation level, pain grade during defecation, and satisfaction level after evacuation...
June 21, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28637983/repeatability-of-measurements-of-surface-electromyographic-variables-during-maximum-voluntary-contraction-of-temporalis-and-masseter-muscles-in-normal-adults
#5
Yeong-Gwan Im, Sang-Ho Han, Ji-Il Park, Hae-Soon Lim, Byung-Gook Kim, Jae-Hyung Kim
This study evaluated the intraexaminer repeatability of measurements of surface electromyography (EMG) variables and functional indices of the myoelectric signals from the masseter and temporalis muscles bilaterally in 15 healthy men. The test was repeated on two different days without templates. The resting muscle activity was recorded once, and two kinds of maximum voluntary contraction (MVC) tasks were performed and recorded three times. The two MVC tasks involved clenching the teeth and biting down on two cotton rolls bilaterally with the posterior teeth...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28637659/enduring-effects-of-perinatal-nicotine-exposure-on-murine-sleep-in-adulthood
#6
Jeremy Charles Borniger, Reuben F Don, Ning Zhang, Robert Thomas Boyd, Randy J Nelson
The long-term consequences of early life nicotine exposure are poorly defined. Approximately 8-10% of women report smoking during pregnancy, and this may promote aberrant development in the offspring. To this end, we investigated potential enduring effects of perinatal nicotine exposure on murine sleep and affective behaviors in adulthood (~13-15 weeks of age) in C57Bl6j mice. Mothers received a water bottle containing 200 µg/ml nicotine bitartrate dihydrate in 2% w/v saccharin or pH-matched 2% saccharin with 0...
June 21, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28626331/the-effects-of-training-using-emg-biofeedback-on-stroke-patients-upper-extremity-functions
#7
Ju-Hong Kim
[Purpose] While electromyography (EMG) biofeedback has been recently used in diverse therapeutic interventions for stroke patients, research on its effects has been lacking. Most existing studies are confined to functions of the lower extremities, and research on upper extremity functional recovery using EMG biofeedback training is limited. Therefore, this study examined the effects of training using EMG biofeedback on stroke patients' upper extremity functions. [Subjects and Methods] The subjects of this study included 30 hemiplegia patients whose disease duration was longer than six months...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28620349/localization-of-deep-brain-stimulation-contacts-using-corticospinal-corticobulbar-tracts-stimulation
#8
Julien F Bally, Maria-Isabel Vargas, Judit Horvath, Vanessa Fleury, Pierre Burkhard, Shahan Momjian, Pierre Pollak, Colette Boex
BACKGROUND: Successful deep brain stimulation (DBS) in Parkinson's disease (PD) requires optimal electrode placement. One technique of intraoperative electrode testing is determination of stimulation thresholds inducing corticospinal/corticobulbar tracts (CSBT) motor contractions. OBJECTIVE: This study aims to analyze correlations between DBS electrode distance to CSBT and contraction thresholds, with either visual or electromyography (EMG) detection, to establish an intraoperative tool devoted to ensure safe distance of the electrode to the CSBT...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28615244/stimulation-of-the-pelvic-nerve-increases-bladder-capacity-in-the-prostaglandin-e2-rat-model-of-overactive-bladder
#9
Christopher L Langdale, James A Hokanson, Arun Sridhar, Warren M Grill
Overactive bladder (OAB) syndrome is a highly prevalent condition that may lead to medical complications and decreased quality of life. Emerging therapies focusing on selective electrical stimulation of peripheral nerves associated with lower urinary tract (LUT) function may provide improved efficacy and reduced side effects compared to sacral neuromodulation for the treatment of OAB symptoms. Prior studies investigating the effects of pelvic nerve (PelN) stimulation on LUT function were focused on promoting bladder contractions, and it is unclear if selective stimulation of the PelN would be beneficial for the treatment of OAB...
June 14, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28613265/a-novel-approach-to-measuring-muscle-mechanics-in-vehicle-collision-conditions
#10
Simon Krašna, Srđan Đorđević, Marija Hribernik, Ana Trajkovski
The aim of the study was to evaluate a novel approach to measuring neck muscle load and activity in vehicle collision conditions. A series of sled tests were performed on 10 healthy volunteers at three severity levels to simulate low-severity frontal impacts. Electrical activity-electromyography (EMG)-and muscle mechanical tension was measured bilaterally on the upper trapezius. A novel mechanical contraction (MC) sensor was used to measure the tension on the muscle surface. The neck extensor loads were estimated based on the inverse dynamics approach...
June 14, 2017: Sensors
https://www.readbyqxmd.com/read/28611725/multiparameter-electromyography-analysis-of-the-masticatory-muscle-activities-in-patients-with-brainstem-stroke-at-different-head-positions
#11
Chuyao Jian, Miaoluan Wei, Jie Luo, Jiayin Lin, Wen Zeng, Weitian Huang, Rong Song
The performance of the masticatory muscle is frequently affected and presents high heterogeneity poststroke. Surface electromyography (EMG) is widely used to quantify muscle movement patterns. However, only a few studies applied EMG analysis on the research of masticatory muscle activities poststroke, and most of which used single parameter-root mean squares (RMS). The aim of this study was to fully investigate the performance of masticatory muscle at different head positions in healthy subjects and brainstem stroke patients with multiparameter EMG analysis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28611677/greater-neural-adaptations-following-high-vs-low-load-resistance-training
#12
Nathaniel D M Jenkins, Amelia A Miramonti, Ethan C Hill, Cory M Smith, Kristen C Cochrane-Snyman, Terry J Housh, Joel T Cramer
We examined the neuromuscular adaptations following 3 and 6 weeks of 80 vs. 30% one repetition maximum (1RM) resistance training to failure in the leg extensors. Twenty-six men (age = 23.1 ± 4.7 years) were randomly assigned to a high- (80% 1RM; n = 13) or low-load (30% 1RM; n = 13) resistance training group and completed leg extension resistance training to failure 3 times per week for 6 weeks. Testing was completed at baseline, 3, and 6 weeks of training. During each testing session, ultrasound muscle thickness and echo intensity, 1RM strength, maximal voluntary isometric contraction (MVIC) strength, and contractile properties of the quadriceps femoris were measured...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28608860/sensitivity-and-specificity-of-multichannel-surface-electromyography-in-diagnosing-fecal-incontinence
#13
Michał Nowakowski, Krzysztof A Tomaszewski, Łukasz Machura, Paulina Trybek, Roman M Herman
BACKGROUND: Assessment of the neurocontrol of the external anal sphincter has long been restricted to investigating patients by invasive tools. Less invasive techniques have been regarded less suitable for diagnosis. OBJECTIVE: The aim was to develop a surface electromyography-based algorithm to facilitate fecal incontinence diagnosis, and to assess its sensitivity and specificity. DESIGN: Data analysis from a single center prospective study...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/28606158/open-surgical-implantation-of-a-viable-cryopreserved-placental-membrane-after-decompression-and-neurolysis-of-common-peroneal-nerve-a-case-series
#14
E Rodriguez-Collazo, Y Tamire
BACKGROUND: The purpose of this study is to report on the rehabilitative outcomes associated with common peroneal nerve (CPN) decompression and neurolysis revision when performed with open surgical implantation of a viable cryopreserved placental membrane (vCPM). METHODS: Seven patients who underwent secondary CPN decompression and neurolysis with open surgical implantation of a viable cryopreserved placental membrane (vCPM) after previously failed surgery without vCPM utilization were identified through a retrospective medical record review and outcomes were analyzed...
June 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28599014/effect-of-the-alexander-technique-on-muscle-activation-movement-kinematics-and-performance-quality-in-collegiate-violinists-and-violists-a-pilot-feasibility-study
#15
Rachelle C Wolf, Harvey P Thurmer, William P Berg, Henry E Cook, L James Smart
Musicians are trained to attend to aural and visual senses, to the detriment of kinesthetic awareness, which often results in unnecessary muscle tension and narrowed attentional focus. The Alexander technique (AT) addresses these concerns by approaching action using a process of whole-body consciousness. Incorporation of AT concepts into skill practice may reduce static tension in playing and result in both prevention of injury and improved quality of performance, but objective evidence of these effects is lacking...
June 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28594287/electromyographic-analyses-of-the-erector-spinae-muscles-during-golf-swings-using-four-different-clubs
#16
Graeme G Sorbie, Fergal M Grace, Yaodong Gu, Julien S Baker, Ukadike C Ugbolue
The purpose of this study was to compare the electromyography (EMG) patterns of the thoracic and lumbar regions of the erector spinae (ES) muscle during the golf swing whilst using four different golf clubs. Fifteen right-handed male golfers performed a total of twenty swings in random order using the driver, 4-iron, 7-iron and pitching-wedge. Surface EMG was recorded from the lead and trail sides of the thoracic and lumbar regions of the ES muscle (T8, L1 and L5 lateral to the spinous-process). Three-dimensional high-speed video analysis was used to identify the backswing, forward swing, acceleration, early and late follow-through phases of the golf swing...
June 8, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28593096/emg-of-shoulder-muscles-during-reactive-isometric-elastic-resistance-exercises
#17
Michael J Mullaney, Christine Perkinson, Ian Kremenic, Timothy F Tyler, Karl Orishimo, Christopher Johnson
BACKGROUND: Traditionally, shoulder isometrics are introduced in the early stages of shoulder rehabilitation. A patient's isometric torque output is based on a subjective perception of force generation. By utilizing elastic resistance elongation (strain) to standardize force output, clinicians could prescribe shoulder therapeutic isometrics based on % maximum voluntary contraction (%MVC). PURPOSE/HYPOTHESIS: The purpose of this study was to measure electromyographic (EMG) activity and determine the %MVC during shoulder flexion, external rotation and abduction isometrics at varying lengths of TheraBand® elastic resistance...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28593090/dynamic-hip-adduction-abduction-and-abdominal-exercises-from-the-holmich-groin-injury-prevention-program-are-intense-enough-to-be-considered-strengthening-exercises-a-cross-sectional-study
#18
Kasper Krommes, Thomas Bandholm, Markus D Jakobsen, Lars L Andersen, Andreas Serner, Per Hölmich, Kristian Thorborg
BACKGROUND: Training intensity is an important variable in strength training and above 80% of one repetition maximum is recommended for promoting strength for athletes. Four dynamic and two isometric on-field exercises are included in the Hölmich groin-injury prevention study that initially failed to show a reduction in groin injuries in soccer players. It has been speculated that exercise-intensity in this groin-injury prevention program was too low to induce the strength gains necessary to protect against groin-related injuries...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28593000/ultrasound-and-emg-ncv-study-electromyography-and-nerve-conduction-velocity-correlation-in-diagnosis-of-nerve-pathologies
#19
REVIEW
Shilpa Domkundwar, Gayatri Autkar, S V Khadilkar, Mayur Virarkar
PURPOSE: Nerve disorders are commonly encountered in clinical practice. Ultrasonography (USG) is a useful modality in the evaluation of most of the peripheral and superficial pathologies amenable to penetration by ultrasound. The primary objective is to study the USG findings of various peripheral nerve pathologies and to correlate them with electrophysiological (EMG-NCV) findings. METHOD: 42 patients referred with suspicion of peripheral nervous system affection were evaluated with USG along with EMG-NCV...
June 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28582897/reflex-mediated-dynamic-neuromuscular-stabilization-in-stroke-patients-emg-processing-and-ultrasound-imaging
#20
Hyun S Yoon, Joshua Sung H You
BACKGROUND: Postural core instability is associated with poor dynamic balance and a high risk of serious falls. Both neurodevelopmental treatment (NDT) and dynamic neuromuscular stabilization (DNS) core stabilization exercises have been used to improve core stability, but the outcomes of these treatments remain unclear. OBJECTIVE: This study was undertaken to examine the therapeutic effects of NDT and DNS core stabilization exercises on muscular activity, core stability, and core muscle thickness...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
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