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Emg and aging

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https://www.readbyqxmd.com/read/28921721/effects-of-the-availability-of-accurate-proprioceptive-information-on-older-adults-postural-sway-and-muscle-co-contraction
#1
Chesney E Craig, Glenn H M Calvert, Michail Doumas
During conditions of increased postural instability, older adults exhibit greater lower-limb muscle co-contraction. This response has been interpreted as a compensatory postural strategy, which may be used to i006Ecrease proprioceptive information from muscle spindles or to stiffen the lower limb as a general response to minimise postural sway. The current study aimed to test these two hypotheses by investigating use of muscle co-contraction during sensory transitions that manipulated proprioceptive input. Surface EMG was recorded from the bilateral tibialis anterior and gastrocnemius medialis muscles, in young (aged 18-30) and older adults (aged 68-80) during blind-folded postural assessment...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28906348/effect-of-anodal-transcranial-direct-current-stimulation-of-the-motor-cortex-on-elbow-flexor-muscle-strength-in-the-very-old
#2
Kentaro Oki, Leatha A Clark, Shinichi Amano, Brian C Clark
BACKGROUND AND PURPOSE: Muscle weakness predisposes older adults to a fourfold increase in functional limitations and has previously been associated with reduced motor cortex excitability in aging adults. The purpose of this study was to determine whether a single session of anodal transcranial direct current stimulation (tDCS) of the motor cortex would increase elbow flexion muscle strength and electromyographic (EMG) amplitude in very old individuals. METHODS: Eleven very old individuals-85...
September 12, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28900705/clinical-relevance-of-neurological-evaluation-in-patients-suffering-urinary-retention-in-the-absence-of-subvesical-obstruction
#3
N Schwertner-Tiepelmann, A Hagedorn-Wiesner, C Erschig, K Beilecke, F Schwab, R Tunn
PURPOSE: Clinical relevance of neurological evaluation in patients suffered urinary retention in the absence of subvesical obstruction. Determining whether (1) women complaining residual bladder volume without prolapse and obstruction always suffer pudendal nerve damage; (2) neurogenic damage can be linked to patients history/clinical examination; (3) therapy alters regarding to neurological findings; and (4) electromyography (EMG) of musculus sphincter ani externus (MSAE) can be omitted with electronically stimulated pudendal nerve latency (ESPL) as the standard investigation...
September 12, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28900561/effects-of-a-band-loop-on-lower-extremity-muscle-activity-and-kinematics-during-the-barbell-squat
#4
Ryan C A Foley, Brittany D Bulbrook, Duane C Button, Michael W R Holmes
BACKGROUND: Medial knee collapse can signal an underlying movement issue that, if uncorrected, can lead to a variety of knee injuries. Placing a band around the distal thigh may act as a proprioceptive aid to minimize medial collapse of the knee during squats; however, little is known about EMG and biomechanics in trained and untrained individuals during the squat with an elastic band added. HYPOTHESIS/PURPOSE: To investigate the effects of the TheraBand® Band Loop on kinematics and muscle activity of the lower extremity during a standard barbell back squat at different intensities in both trained and untrained individuals...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28900560/building-a-better-gluteal-bridge-electromyographic-analysis-of-hip-muscle-activity-during-modified-single-leg-bridges
#5
B J Lehecka, Michael Edwards, Ryan Haverkamp, Lani Martin, Kambry Porter, Kailey Thach, Richard J Sack, Nils A Hakansson
BACKGROUND: Gluteal strength plays a role in injury prevention, normal gait patterns, eliminating pain, and enhancing athletic performance. Research shows high gluteal muscle activity during a single-leg bridge compared to other gluteal strengthening exercises; however, prior studies have primarily measured muscle activity with the active lower extremity starting in 90 ° of knee flexion with an extended contralateral knee. This standard position has caused reports of hamstring cramping, which may impede optimal gluteal strengthening...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28895154/perceptions-of-pain-of-laryngeal-electromyography
#6
Ashley P O'Connell Ferster, Amanda Hu
OBJECTIVE: To evaluate pain associated with laryngeal electromyography (LEMG). STUDY DESIGN: A prospective case series. METHODS: Adult patients scheduled for LEMG in a tertiary care laryngology practice were recruited between July 20, 2016, and March 1, 2017. Demographic and clinical data were extracted from the charts. Study participants reported their anticipated pain level using a visual analog scale (VAS) prior to the procedure. VAS was administered again within 10 minutes after the procedure, along with the validated McGill Pain Questionnaire, to gauge patient's pain perception after undergoing LEMG...
September 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28894422/does-heel-height-cause-imbalance-during-sit-to-stand-task-surface-emg-perspective
#7
Ganesh R Naik, Ahmed Al-Ani, Massimiliano Gobbo, Hung T Nguyen
The purpose of this study was to determine whether electromyography (EMG) muscle activities around the knee differ during sit-to-stand (STS) and returning task for females wearing shoes with different heel heights. Sixteen healthy young women (age = 25.2 ± 3.9 years, body mass index = 20.8 ± 2.7 kg/m(2)) participated in this study. Electromyography signals were recorded from the two muscles, vastus medialis (VM) and vastus lateralis (VL) that involve in the extension of knee. The participants wore shoes with five different heights, including 4, 6, 8, 10, and 12 cm...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28858275/-botulinus-toxin-in-complex-treatment-of-myofacial-pain-syndrome
#8
S N Fedotov, M A Gerasimova, S D Shorokhov, A I Tischenko
The aim of the study was to assess the efficacy of type A Botulinus toxin (BTA) in pain release by TMJ functional pain disorders. The study included 211 patients with TMJ functional pain disorder (20.4% males and 79.6% females; mean age 45.3 years). The patients underwent clinical examination and bioelectric activity assessment of masticatory muscles by electromyography (EMG). EMG specters of 20 healthy volunteers with intact dental arches served as a control. After examination BTA was injected in muscular pain trigger points...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28845598/altered-pain-sensitivity-and-axioscapular-muscle-activity-in-neck-pain-patients-compared-with-healthy-controls
#9
S W Christensen, R P Hirata, T Graven-Nielsen
BACKGROUND: Previous studies have indicated that neck pain patients feel increased symptoms following upper limb activities, and altered axioscapular muscle function has been proposed as a contributing factor. METHODS: Pain sensitivity and muscle activity, during arm movements, were assessed in neck pain patients and controls. Patients with ongoing insidious-onset neck pain (IONP, N = 16) and whiplash-associated disorders (WAD, N = 9) were included along with sex- and age-matched controls (N = 25)...
August 27, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28809846/the-use-of-trace-eyeblink-classical-conditioning-to-assess-hippocampal-dysfunction-in-a-rat-model-of-fetal-alcohol-spectrum-disorders
#10
Tuan D Tran, Aenia Amin, Keith G Jones, Ellen M Sheffer, Lidia Ortega, Keith Dolman
Neonatal rats were administered a relatively high concentration of ethyl alcohol (11.9% v/v) during postnatal days 4-9, a time when the fetal brain undergoes rapid organizational change and is similar to accelerated brain changes that occur during the third trimester in humans. This model of fetal alcohol spectrum disorders (FASDs) produces severe brain damage, mimicking the amount and pattern of binge-drinking that occurs in some pregnant alcoholic mothers. We describe the use of trace eyeblink classical conditioning (ECC), a higher-order variant of associative learning, to assess long-term hippocampal dysfunction that is typically seen in alcohol-exposed adult offspring...
August 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28796986/evaluation-of-stomatognathic-problems-in-children-with-osteogenesis-imperfecta-osteogenesis-imperfecta-oi-preliminary-study
#11
Danuta Smoląg, Małgorzata Kulesa-Mrowiecka, Jerzy Sułko
According to epidemiological data, muscular dysfunctions of the masticatory system occur in 15-23% of the population. Preventive examinations of functional disorders of the stomatognathic system are, therefore, of particular importance. A distinct group of patients exposed to dysfunctions in the area of the masticatory organ locomotor apparatus comprises those with genetic diseases characterised by disorders in collagen formation. One of such diseases is osteogenesis imperfecta (OI) and dentinogenesis imperfecta that usually goes together with the former...
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/28795225/unintended-activity-in-homologous-muscle-during-intended-unilateral-contractions-increases-with-greater-task-difficulty
#12
Hironori Watanabe, Hiroaki Kanehisa, Yasuhide Yoshitake
PURPOSE: The present study aimed to examine (1) the effect of task difficulty on unintended muscle activation (UIMA) levels in contralateral homologous muscle, (2) the difference between young and old adults in degree of UIMA with respect to task difficulty, and (3) temporal correlations between intended and contralateral unintended muscle activity at low frequency during unilateral intended force-matching tasks. METHODS: Twelve young (21.8 ± 2.4 years) and twelve old (69...
August 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28780847/-characteristics-of-repetitive-nerve-stimulation-in-53-cases-of-amyotrophic-lateral-sclerosis
#13
W X Liu, Z H Chen, L Ling, Y T Ren, B Sun, F Yang, F Cui, X S Huang
Objective: To investigate the feature of repetitive nerve stimulation (RNS) in patients with amyotrophic lateral sclerosis (ALS) and correlation between RNS and clinical features and electromyography (EMG) findings of the corresponding muscle. Methods: Needle EMG and RNS were performed in 53 patients with ALS, who were recruited into Department of Neurology of Chinese PLA general hospital during April to December in 2016. Decrement of the compond muscle action potential (CMAP) in response to RNS of different nerves and stimulus frequencies was compared...
August 1, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28750990/a-comparison-of-scapulothoracic-muscle-electromyographic-activity-in-subjects-with-and-without-subacromial-impingement-syndrome-during-a-functional-task
#14
Kh Ayatollahi, F Okhovatian, K K Kalantari, A Akbarzade Baghban
Shoulder impingement syndrome (SIS) is the common cause of shoulder pain and disability and the individuals suffering from it are usually in different levels of physical activity covering an extensive age range. In spite of limited scientific evidence for an altered motor pattern in the shoulder muscles of patients with SIS, they are frequently referred to physiotherapists in an attempt to optimize coordination and strength of the affected muscles. The aim of this study was to compare scapular muscle activity in a general population of subjects with and without SIS during an arm elevation task executed at different speeds in two load conditions...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28750955/acute-electromyographic-responses-of-deep-thoracic-paraspinal-muscles-to-spinal-manual-therapy-interventions-an-experimental-randomized-cross-over-study
#15
Gary Fryer, Michael Bird, Barry Robbins, Jane C Johnson
This single group, randomized, cross-over study explored whether manual therapy alters motor tone of deep thoracic back muscles by examining resting electromyographic activity (EMG) after 2 types of manual therapy and a sham control intervention. Twenty-two participants with thoracic spinal pain (15 females, 7 males, mean age 28.1 ± 6.4 years) had dual fine-wire, intramuscular electrodes inserted into deep transversospinalis muscles at a thoracic level where tissues appeared abnormal to palpation (AbP) and at 2 sites above and below normal and non-tender to palpation (NT)...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28736109/electromyographic-analysis-of-superior-orbicularis-oris-muscle-function-in-children-surgically-treated-for-unilateral-complete-cleft-lip-and-palate
#16
Liliana Szyszka-Sommerfeld, Krzysztof Woźniak, Teresa Matthews-Brzozowska, Beata Kawala, Marcin Mikulewicz
PURPOSE: The aim of this study was to assess the electrical activity of the superior orbicularis oris muscle in children surgically treated for unilateral complete cleft lip and palate (UCCLP). MATERIAL AND METHODS: The sample comprised 45 patients 6.38-12.68 years of age with UCCLP and 40 subjects 6.61-11.71 years of age with no clefts. Electromyographical (EMG) recordings were taken with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) in the rest position and during saliva swallowing, lip protrusion and reciprocal compression of the lips, as well as while producing the phonemes /p/, /b/, and /m/ combined with the vowel /a/...
September 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28724779/chronic-pain-alters-spatiotemporal-activation-patterns-of-forearm-muscle-synergies-during-the-development-of-grip-force
#17
Nagarajan Manickaraj, Leanne M Bisset, Venkata S P T Devanaboyina, Justin J Kavanagh
It is largely unknown how the CNS regulates multiple muscle systems in the presence of pain. This study used muscle synergy analysis to investigate multiple forearm muscles in individuals with chronic elbow pain during the development of grip force. Eleven individuals with chronic elbow pain and 11 healthy age-matched controls developed grip force to 15% and 30% of MVC. Surface EMG was obtained from six forearm muscles during force development before non-negative matrix factorization was performed. The relationship between muscle synergies and standard clinical tests of elbow pain were examined using linear regression...
July 19, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28724204/gait-and-balance-impairment-after-acute-methanol-poisoning
#18
Kamila Peterová, Hana Brožová, Jiří Klempíř, Irena Lišková, Ondřej Bezdíček, Petr Ridzoň, Manuela Vaněčková, Sergej Zakharov, Daniela Pelclová, Michal Miovský, Evžen Růžička
Neurological sequelae including gait impairment were reported in survivors after methanol intoxication; however, no systematic study has been published so far. We aimed to analyse gait and balance impairment in a group of Czech methanol poisoning survivors. We examined 43 patients (age 46±13 years) 2-8 months after methanol poisoning and 43 healthy controls. Investigations contained a shortened version of Falls Efficacy Scale (FES), clinical tests of gait and balance including Timed Up and Go test (TUG) and gait analysis using GaitRite(®) system, neurological and neuropsychological examination, brain imaging, EMG and tests of alcohol consumption...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28717355/correlation-of-creatine-kinase-levels-with-clinical-features-and-survival-in-amyotrophic-lateral-sclerosis
#19
Hongfei Tai, Liying Cui, Yuzhou Guan, Mingsheng Liu, Xiaoguang Li, Dongchao Shen, Dawei Li, Bo Cui, Jia Fang, Qingyun Ding, Kang Zhang, Shuangwu Liu
OBJECTIVE: To evaluate serum creatine kinase (CK) levels of amyotrophic lateral sclerosis (ALS) patients and to explore the relationship between CK levels and the clinical characteristics and survival prognosis of ALS patients. METHODS: We analyzed the CK levels of 185 ALS patients who underwent long-term follow-up. The relationship between CK levels and clinical features including sex, age, disease duration, site of onset, body mass index (BMI), serum creatinine (Cr), and spontaneous electromyographic activity was analyzed by univariate analysis and multiple linear regression...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28715964/uterine-and-abdominal-muscle-electromyographic-activities-in-control-and-pcea-treated-nulliparous-women-during-the-second-stage-of-labor
#20
Xueya Qian, Pin Li, Shao-Qing Shi, Robert E Garfield, Huishu Liu
OBJECTIVE: Patient-controlled epidural analgesia (PCEA), used to relieve pain during delivery, delays labor but the mechanism is unknown. The aim was to investigate the effects of PCEA on uterine and abdominal muscles electromyographic (EMG) activity during the second stage of labor. METHODS: This study included 45 nulliparous pregnant women without PCEA, 42 women with standard PCEA treatment given during the first stage of labor and stopped near the end of the first stage, and 22 women with standard PCEA treatment with continued use throughout the first and second stages of labor...
August 2017: Reproductive Sciences
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