keyword
MENU ▼
Read by QxMD icon Read
search

Emg and elderly

keyword
https://www.readbyqxmd.com/read/29572650/increased-enslaving-in-elderly-is-associated-with-changes-in-neural-control-of-the-extrinsic-finger-muscles
#1
M Mirakhorlo, H Maas, H E J Veeger
Aging has consequences for hand motor control, among others affecting finger force enslaving during static pressing tasks. The aim of this study was to assess whether the extent of finger force enslaving changes with aging during a task that involves both static and dynamic phases. Ten right-handed young (22-30 years) and ten elderly subjects (67-79 years) were instructed to first exert a constant force (static phase) and then flex their index finger while counteracting constant resistance forces orthogonal to their fingertips (dynamic phase)...
March 23, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29487515/modulation-of-emg-emg-coherence-in-a-choice-stepping-task
#2
Ippei Nojima, Tatsunori Watanabe, Kotaro Saito, Shigeo Tanabe, Hoshinori Kanazawa
The voluntary step execution task is a popular measure for identifying fall risks among elderly individuals in the community setting because most falls have been reported to occur during movement. However, the neurophysiological functions during this movement are not entirely understood. Here, we used electromyography (EMG) to explore the relationship between EMG-EMG coherence, which reflects common oscillatory drive to motoneurons, and motor performance associated with stepping tasks: simple reaction time (SRT) and choice reaction time (CRT) tasks...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29303097/-abdominal-wall-paresis-as-a-complication-of-herpes-zoster
#3
B Geboers, C J Verveld, I Bronner, A H W van de Ven
BACKGROUND: Herpes zoster is an illness which is especially common amongst the elderly in the Netherlands and which can express itself in various ways. Besides affecting sensory nerves, which leads to postherpetic pain, the varicella zoster virus may also invade motor nerves. CASE DESCRIPTION: A 73-year-old female went to the surgeon with symptoms of a painful swelling in the left lower abdomen. She had experienced herpes zoster at the site of the swelling a few months earlier...
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29168769/early-detection-of-the-initiation-of-sit-to-stand-posture-transitions-using-orthosis-mounted-sensors
#4
Abul Doulah, Xiangrong Shen, Edward Sazonov
Assistance during sit-to-stand (SiSt) transitions for frail elderly may be provided by powered orthotic devices. The control of the powered orthosis may be performed by the means of electromyography (EMG), which requires direct contact of measurement electrodes to the skin. The purpose of this study was to determine if a non-EMG-based method that uses inertial sensors placed at different positions on the orthosis, and a lightweight pattern recognition algorithm may accurately identify SiSt transitions without false positives...
November 23, 2017: Sensors
https://www.readbyqxmd.com/read/29167637/variations-in-static-force-control-and-motor-unit-behavior-with-error-amplification-feedback-in-the-elderly
#5
Yi-Ching Chen, Linda L Lin, Yen-Ting Lin, Chia-Ling Hu, Ing-Shiou Hwang
Error amplification (EA) feedback is a promising approach to advance visuomotor skill. As error detection and visuomotor processing at short time scales decline with age, this study examined whether older adults could benefit from EA feedback that included higher-frequency information to guide a force-tracking task. Fourteen young and 14 older adults performed low-level static isometric force-tracking with visual guidance of typical visual feedback and EA feedback containing augmented high-frequency errors...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29038360/carotid-sinus-hypersensitivity-block-of-the-sternocleidomastoid-muscle-does-not-affect-responses-to-carotid-sinus-massage-in-healthy-young-adults
#6
Matthew G Lloyd, James M Wakeling, Michael S Koehle, Robert J Drapala, Victoria E Claydon
The arterial baroreflex is crucial for short-term blood pressure control - abnormal baroreflex function predisposes to syncope and falling. Hypersensitive responses to carotid baroreflex stimulation using carotid sinus massage (CSM) are common in older adults and may be associated with syncope. The pathophysiology of this hypersensitivity is unknown, but chronic denervation of the sternocleidomastoid muscles is common in elderly patients with carotid sinus hypersensitivity (CSH), and is proposed to interfere with normal integration of afferent firing from the carotid baroreceptors with proprioceptive feedback from the sternocleidomastoids, producing large responses to CSM...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/28977366/muscle-and-tendon-contributions-to-reduced-rate-of-torque-development-in-healthy-older-males
#7
Jonathan I Quinlan, Constantinos N Maganaris, Martino V Franchi, Kenneth Smith, Philip J Atherton, Nathaniel J Szewczyk, Paul L Greenhaff, Bethan E Phillips, James I Blackwell, Catherine Boereboom, John P Williams, John Lund, Marco V Narici
Background: The ability to rapidly generate and transfer muscle force is essential for effective corrective movements in order to prevent a fall. The aim of this study was to establish the muscle and tendon contributions to differences in rate of torque development (RTD) between younger (YM) and older males (OM). Method: Twenty-eight young males (23.9 years ± 1.1) and 22 old males (68.5 years ± 0.5) were recruited for assessment of Quadriceps Anatomical CSA (ACSA), maximal voluntary contraction (MVC), rate of torque development (RTD), and tendon biomechanical properties...
August 2, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28967406/effects-of-mouth-rehabilitation-with-removable-complete-dentures-on-stimulus-perception-and-the-electromyographic-activity-of-the-orbicularis-oris-muscle
#8
Fernanda P de Caxias, Daniela M Dos Santos, Marcelo C Goiato, Sandro B Bitencourt, Emily V F da Silva, Murilo C B Laurindo-Junior, Karina H L Turcio
STATEMENT OF PROBLEM: Many elderly individuals are rehabilitated with removable complete dentures, which require an initial adaptation period for both oral perception and the perioral muscles. Studies assessing the changes in stimulus perception and the electromyographic (EMG) activity of the orbicularis oris muscle shortly after conventional complete denture insertion are lacking. PURPOSE: The purpose of this clinical study was to evaluate the effect of mouth rehabilitation with removable complete dentures on stimulus perception and the EMG activity of the orbicularis oris muscle...
September 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28949820/pilates-and-proprioceptive-neuromuscular-facilitation-methods-induce-similar-strength-gains-but-different-neuromuscular-adaptations-in-elderly-women
#9
Fabiana Teixeira de Carvalho, Laiana Sepúlveda de Andrade Mesquita, Rafael Pereira, Osmar Pinto Neto, Renato Amaro Zangaro
Background/Study Context: The aging process is associated with a decline in muscle mass, strength, and conditioning. Two training methods that may be useful to improve muscle function are Pilates and proprioceptive neuromuscular facilitation (PNF). Thus, the present study aimed to compare the influence of training programs using Pilates and PNF methods with elderly women. METHODS: Sixty healthy elderly women were randomly divided into three groups: Pilates group, PNF group, and control group...
September 26, 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28639056/relevance-of-the-clinical-and-psychophysiological-variables-in-the-dyssynergic-defecation-a-comparative-study-in-elderly-subjects
#10
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...
September 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28579089/muscle-strength-and-force-development-in-high-and-low-functioning-elderly-men-influence-of-muscular-and-neural-factors
#11
Charlotte H Pion, Sébastien Barbat-Artigas, Félix St-Jean-Pelletier, Stéphanie Chevalier, Pierrette Gaudreau, Gilles Gouspillou, José A Morais, Marc Bélanger, Mylène Aubertin-Leheudre
BACKGROUND: Aging leads to a loss of muscle strength and functional capacity likely resulting from a combination of neural and muscle alterations. The aim of this study was to identify possible disparities in muscle strength and force development profiles in high- and low-functioning elderly men and to investigate muscular and neurophysiological factors that could explain the differences. METHODS: Sixty community-dwelling men in good general health were divided in two groups based on a functional capacity (FC) z-score derived from 6 tests of the Short Physical Performance Battery and Senior Fitness Test (Normal and fast 4m-walk tests, normal and fast Timed-up and go, chair and stair tests)...
October 1, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28469567/the-spatial-distribution-of-ankle-muscles-activity-discriminates-aged-from-young-subjects-during-standing
#12
Fabio V Dos Anjos, Talita P Pinto, Marco Gazzoni, Taian M Vieira
During standing, age-related differences in the activation of ankle muscles have been reported from surface electromyograms (EMGs) sampled locally. Given though activity seems to distribute unevenly within ankle muscles, the local sampling of surface EMGs may provide a biased view on how often and how much elderly and young individuals activate these muscles during standing. This study aimed therefore at sampling EMGs from multiple regions of individual ankle muscles to evaluate whether the distribution of muscle activity differs between aged and young subjects during standing...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28411442/ankle-muscle-co-contractions-during-quiet-standing-are-associated-with-decreased-postural-steadiness-in-the-elderly
#13
Albert H Vette, Dimitry G Sayenko, Michael Jones, Masaki O Abe, Kimitaka Nakazawa, Kei Masani
It has been reported that the elderly use co-contraction of the tibialis anterior (TA) and plantarflexor muscles for longer duration during quiet standing than the young. However, the particular role of ankle muscle co-contractions in the elderly during quiet standing remains unclear. Therefore, the objective of this study was to investigate the association between ankle muscle co-contractions and postural steadiness during standing in the elderly. Twenty-seven young (27.2±4.5yrs) and twenty-three elderly (66...
April 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28345674/skeletal-muscle-pump-drives-control-of-cardiovascular-and-postural-systems
#14
Ajay K Verma, Amanmeet Garg, Da Xu, Michelle Bruner, Reza Fazel-Rezai, Andrew P Blaber, Kouhyar Tavakolian
The causal interaction between cardio-postural-musculoskeletal systems is critical in maintaining postural stability under orthostatic challenge. The absence or reduction of such interactions could lead to fainting and falls often experienced by elderly individuals. The causal relationship between systolic blood pressure (SBP), calf electromyography (EMG), and resultant center of pressure (COPr) can quantify the behavior of cardio-postural control loop. Convergent cross mapping (CCM) is a non-linear approach to establish causality, thus, expected to decipher nonlinear causal cardio-postural-musculoskeletal interactions...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194659/activity-of-erector-spinae-during-trunk-forward-bending-and-backward-return-the-effects-of-age
#15
Iman Shojaei, Babak Bazrgari
Electromyography (EMG)-based measures of the trunk muscles behavior have been used for objective assessment of biomechanical impairments in patients with low back pain (LBP); yet the literature on normal age-related differences in such measures is scant. A cross-sectional study was designed to assess age-related differences in activity of trunk extensors during forward bending and backward return. Sixty asymptomatic individuals were recruited to form five gender-balanced age groups between 20 and 70 years old...
June 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28059942/efficacy-of-biofeedback-therapy-in-the-treatment-of-dyssynergic-defecation-in-community-dwelling-elderly-women
#16
RANDOMIZED CONTROLLED TRIAL
Miguel A Simón, Ana M Bueno
AIM OF THE STUDY: The aim of this study was to evaluate the efficacy of biofeedback therapy in the treatment of dyssynergic defecation in chronically constipated community-dwelling elderly women. MATERIALS AND METHODS: After an initial assessment phase carried out during 1 month, 20 chronically constipated women with dyssynergic defecation were randomly assigned to either electromyographic biofeedback (EMG-BF) group (n=10) or control group (n=10). Outcome measures used to evaluate the efficacy of treatment were weekly stool frequency, sensation of incomplete evacuation, difficulty evacuation level, mean EMG-activity (μV) of the external anal sphincter during straining to defecate and Anismus index...
November 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27931004/increasing-trend-of-wearables-and-multimodal-interface-for-human-activity-monitoring-a-review
#17
REVIEW
Preeti Kumari, Lini Mathew, Poonam Syal
Activity recognition technology is one of the most important technologies for life-logging and for the care of elderly persons. Elderly people prefer to live in their own houses, within their own locality. If, they are capable to do so, several benefits can follow in terms of society and economy. However, living alone may have high risks. Wearable sensors have been developed to overcome these risks and these sensors are supposed to be ready for medical uses. It can help in monitoring the wellness of elderly persons living alone by unobtrusively monitoring their daily activities...
April 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27855311/effect-of-aging-on-regional-neuromuscular-regulation-within-human-rectus-femoris-muscle-during-stair-ascent-and-descent
#18
Kohei Watanabe, Motoki Kouzaki, Toshio Moritani
Our recent studies showed the rectus femoris (RF) muscle is regionally regulated during the level walking and this unique neuromuscular activation pattern is influenced by aging (Watanabe et al., 2014, 2016 J Biomech). We aimed to investigate and compare regional neuromuscular activation patterns along the RF muscle between the young and elderly during the stair walking. Fourteen young men (age: 20.4±1.0years) and 14 elderly men (age: 73.8±5.9years) performed the stair ascent and descent. Fifteen trials of three steps were performed for both stair ascent and descent...
November 10, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27799694/the-effect-of-intervention-according-to-muscle-contraction-type-on-the-cerebral-cortex-of-the-elderly
#19
Jeong-Il Kang, Dae-Keun Jeong, Hyun Choi
[Purpose] Here we investigated the activity of the cerebral cortex after resistance training in the elderly. We evaluated the clinical neuropsychological basis of 2 contractile types, and determined the usefulness of a movement-related cortical potential (MRCP) from an electroencephalography (EEG). [Subjects and Methods] The subjects were 11 females and 11 males aged between 65 and 70 years. The subjects were randomly assigned into a group that performed an eccentric contraction exercise (experimental group I, n=11) and a group that performed a concentric contraction exercise (experimental group II, n=11)...
September 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27720736/the-effect-of-a-crunchy-pseudo-chewing-sound-on-perceived-texture-of-softened-foods
#20
Hiroshi Endo, Shuichi Ino, Waka Fujisaki
Elderly individuals whose ability to chew and swallow has declined are often restricted to unpleasant diets of very soft food, leading to a poor appetite. To address this problem, we aimed to investigate the influence of altered auditory input of chewing sounds on the perception of food texture. The modified chewing sound was reported to influence the perception of food texture in normal foods. We investigated whether the perceived sensations of nursing care foods could be altered by providing altered auditory feedback of chewing sounds, even if the actual food texture is dull...
December 1, 2016: Physiology & Behavior
keyword
keyword
49069
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"