keyword
https://read.qxmd.com/read/38451767/lower-limb-myoelectric-calibration-postures-for-transtibial-prostheses
#21
JOURNAL ARTICLE
Ryan R Posh, Emmalynn C Barry, James P Schmiedeler, Patrick M Wensing
The use of an agonist-antagonist muscle pair for myoelectric control of a transtibial prosthesis requires normalizing the myoelectric signals and identifying their co-contraction signature. Extensive literature has explored the relationship between body posture and lower-limb muscle activation level using surface electromyography (EMG), but it is unknown how these relationships hold after amputation. Using a virtual tracking task, this study compares the effect of three different calibration postures (seated, standing, dynamic) on user tracking ability while in two tracking postures (seated, standing) for 18 able-bodied (AB) subjects and 9 subjects with transtibial (TT) amputation...
March 7, 2024: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://read.qxmd.com/read/38437023/repeated-l5-nerve-root-compromise-detected-with-motor-evoked-potentials-mep-but-not-electromyography-emg-a-case-report
#22
JOURNAL ARTICLE
Marshall F Wilkinson, Jennyfer P Galdino Chaves, Miguel Vega Arroyo, Mohammed Zarrabian
We report a case where neuromonitoring, using motor evoked potentials (MEP), detected an intraoperative L5 nerve root deficit during a lumbosacral decompression and instrumented fusion procedure. Critically, the MEP changes were not preceded nor accompanied by any significant spontaneous electromyography (sEMG) activity. Presumptive L5 innervated muscles, including tibialis anterior (TA), extensor hallucis longus (EHL) and gluteus maximus, were targets for nerve root surveillance using combined MEP and sEMG techniques...
March 4, 2024: Neurodiagnostic Journal
https://read.qxmd.com/read/38436108/inhibition-of-tibialis-anterior-spinal-reflex-circuits-using-frequency-specific-neuromuscular-electrical-stimulation
#23
JOURNAL ARTICLE
Suzufumi Arai, Atsushi Sasaki, Shota Tsugaya, Taishin Nomura, Matija Milosevic
BACKGROUND: Neuromuscular electrical stimulation (NMES) can generate muscle contractions and elicit excitability of neural circuits. However, the optimal stimulation frequency for effective neuromodulation remains unclear. METHODS: Eleven able-bodied individuals participated in our study to examine the effects of: (1) low-frequency NMES at 25 Hz, (2) high-frequency NMES at 100 Hz; and (3) mixed-frequency NMES at 25 and 100 Hz switched every second...
March 4, 2024: Artificial Organs
https://read.qxmd.com/read/38436036/vestibulospinal-reflexes-elicited-with-a-tone-burst-method-are-dependent-on-spatial-orientation
#24
JOURNAL ARTICLE
Vincent Jecko, Léa Garcia, Emilie Doat, Vincent Leconte, Dominique Liguoro, Jean-René Cazalets, Etienne Guillaud
Balance involves several sensory modalities including vision, proprioception and the vestibular system. This study aims to investigate vestibulospinal activation elicited by tone burst stimulation in various muscles and how head position influences these responses. We recorded electromyogram (EMG) responses in different muscles (sternocleidomastoid-SCM, cervical erector spinae-ES-C, lumbar erector spinae-ES-L, gastrocnemius-G, and tibialis anterior-TA) of healthy participants using tone burst stimulation applied to the vestibular system...
2024: PeerJ
https://read.qxmd.com/read/38432847/ultrasound-imaging-and-fascial-manipulation%C3%A2-adding-a-twist-on-the-ankle-retinacula
#25
Carmelo Pirri, Antonio Stecco, Carla Stecco, Levent Özçakar
BACKGROUND: Retinacula of the ankle are thickening of the deep fascia of the leg (crural fascia) and foot i.e. inseparable structures. Recent studies report their crucial role in functional stability and proprioception of the ankle. CASE PRESENTATION: A 38-yr-old Caucasian man - with a history of lateral malleolus fracture 12 years ago, obesity and right ankle osteoarthritis - was referred to a physiatrist for a right ankle pain that had significantly worsened over the last year...
January 2024: Journal of Bodywork and Movement Therapies
https://read.qxmd.com/read/38428732/soleus-arthrogenic-muscle-inhibition-following-acute-lateral-ankle-sprain-correlates-with-symptoms-and-ankle-disability-but-not-with-postural-control
#26
JOURNAL ARTICLE
Kyung-Min Kim, Joo-Sung Kim, Alan R Needle
BACKGROUND: Acute lateral ankle sprains (ALAS) are associated with long-term impairments and instability tied to altered neural excitability. Arthrogenic muscle inhibition (AMI) has been observed in this population; however, relationships with injury-related impairments are unclear, potentially due to the resting, prone position in which AMI is typically measured. Assessing AMI during bipedal stance may provide a better understanding of this relationship. METHODS: AMI was assessed in 38 young adults (19 ALAS within 72 h of injury: 10 males, 21...
February 28, 2024: Journal of Sport and Health Science
https://read.qxmd.com/read/38427371/the-diagnostic-role-of-adding-the-hoffman-reflex-for-l5-radiculopathy-in-the-electrodiagnostic-laboratory-a-cross-sectional-study
#27
JOURNAL ARTICLE
Hasan Kara, Elif Balevi Batur, Abdulvahap Kahveci, Onur Karacif, Önder Murat Özerbil, İlknur Albayrak Gezer, Funda Levendoğlu, Murat Zinnuroğlu
OBJECTIVES: To investigate changes in the H-reflex in patients with monoradiculopathies involving L5 or S1 levels by stimulating the sciatic nerve and recording simultaneously from the tibialis anterior (TA), peroneus longus (PL), and soleus (S) muscles. METHODS: Patients with unilateral radicular back pain with L5 or S1 root compression on MRI, participated in this cross-sectional study. The H-reflex over the TA, PL, and S muscles was simultaneously recorded by sciatic nerve stimulation...
March 1, 2024: Journal of Musculoskeletal & Neuronal Interactions
https://read.qxmd.com/read/38420523/avulsion-fracture-of-the-tibialis-anterior-tendon-associated-with-first-metatarsal-base-fracture-a-case-report-and-literature-review
#28
Wei Mao, Shi-Min Chang, Choon Chiet Hong
We present a unique case of a 59-year-old shipyard worker who sustained an avulsion fracture of the tibialis anterior tendon, concurrently with a comminuted fracture at the base of the first metatarsal. This is the first reported case highlighting this concomitant presentation, which underlines the possibility of avulsion fractures accompanying comminuted fractures. Importantly, such avulsion fractures could lead to skin tenting and potential necrosis, necessitating early identification and prompt intervention...
2024: Archives of Bone and Joint Surgery
https://read.qxmd.com/read/38414594/novel-approach-of-ultrasound-guided-lateral-recess-block-for-a-patient-with-lateral-recess-stenosis-a-case-report
#29
Jiao Yang, Xin-Ling Li, Qing-Bing Li
BACKGROUND: Ultrasound guide technology, which can provide real-time visualization of the needle tip and tissues and avoid many adverse events, is widely used in minimally invasive therapy. However, the studies on ultrasound-guided Lateral recess block (LRB) are limited, this is probably because there is no recognized standard method for ultrasound scanning. This study aimed to evaluate the effect of ultrasound-guided LRB in patients with lateral recess stenosis (LRS). CASE SUMMARY: A 65-year-old patient complained of low back pain accompanied occasionally by pain and numbness in the left lower limb...
February 16, 2024: World Journal of Clinical Cases
https://read.qxmd.com/read/38405691/dose-escalation-pre-clinical-trial-of-novel-dok7-aav-in-mouse-model-of-dok7-congenital-myasthenia
#30
Judith Cossins, Imre Kozma, Claudia Canzonetta, Al Hawkins, David Beeson, Patricio Sepulveda, Yin Dong
Congenital myasthenic syndromes (CMS) are a group of inherited disorders characterised by defective neuromuscular transmission and fatigable muscle weakness. Mutations in DOK7 , a gene encoding a post-synaptic protein crucial in the formation and stabilisation of the neuromuscular junction (NMJ), rank among the leading three prevalent causes of CMS in diverse populations globally. The majority of DOK7 CMS patients experience varying degrees of disability despite receiving optimised treatment, necessitating the development of improved therapeutic approaches...
February 12, 2024: bioRxiv
https://read.qxmd.com/read/38401331/the-importance-of-foot-posture-when-recording-lower-leg-electromyography-when-walking-in-non-textured-and-textured-foot-orthoses
#31
JOURNAL ARTICLE
Kelly A Robb, Stephen D Perry
Foot posture describes the anatomical variance in an individual's overall foot shape, an important consideration in the provision of foot orthoses. Current orthoses designs could be optimized by considering the topographical organization of cutaneous mechanoreceptors. Currently, the effect of foot orthoses designs to enhance skin stimulation across different anatomical foot posture remains unknown. Thus, the purpose of this study was to investigate how foot posture variance modulates lower leg muscle activity when walking in non-textured orthoses and in textured orthoses which facilitates cutaneous mechanoreceptors under five different regions of the foot sole...
March 2024: Journal of Biomechanics
https://read.qxmd.com/read/38400931/methodological-considerations-on-near-infrared-spectroscopy-derived-muscle-oxidative-capacity
#32
JOURNAL ARTICLE
Letizia Rasica, Erin Calaine Inglis, Raffaele Mazzolari, Danilo Iannetta, Juan M Murias
PURPOSE: Different strategies for near-infrared spectroscopy (NIRS)-derived muscle oxidative capacity assessment have been reported. This study compared and evaluated (I) approaches for averaging trials; (II) NIRS signals and blood volume correction equations; (III) the assessment of vastus lateralis (VL) and tibialis anterior (TA) muscles in two fitness levels groups. METHODS: Thirty-six participants [18 chronically trained (CT: 14 males, 4 females) and 18 untrained (UT: 10 males, 8 females)] participated in this study...
February 24, 2024: European Journal of Applied Physiology
https://read.qxmd.com/read/38391670/application-of-adipose-stem-cells-in-3d-nerve-guidance-conduit-prevents-muscle-atrophy-and-improves-distal-muscle-compliance-in-a-peripheral-nerve-regeneration-model
#33
JOURNAL ARTICLE
Cristian Trâmbițaș, Bogdan Andrei Cordoș, Dorin Constantin Dorobanțu, Cristian Vintilă, Alexandru Petru Ion, Timea Pap, David Camelia, Claudiu Puiac, Emil Marian Arbănași, Claudiu Constantin Ciucanu, Adrian Vasile Mureșan, Eliza Mihaela Arbănași, Eliza Russu
BACKGROUND: Peripheral nerve injuries (PNIs) represent a significant clinical problem, and standard approaches to nerve repair have limitations. Recent breakthroughs in 3D printing and stem cell technologies offer a promising solution for nerve regeneration. The main purpose of this study was to examine the biomechanical characteristics in muscle tissue distal to a nerve defect in a murine model of peripheral nerve regeneration from physiological stress to failure. METHODS: In this experimental study, we enrolled 18 Wistar rats in which we created a 10 mm sciatic nerve defect...
February 15, 2024: Bioengineering
https://read.qxmd.com/read/38390231/the-acute-effects-of-a-stretching-and-conditioning-exercise-protocol-for-the-lower-limbs-on-gait-performance-a-proof-of-concept-and-single-blind-study
#34
JOURNAL ARTICLE
Felipe B Santinelli, Aline Prieto Silveira-Ciola, Vinicius C Moreno, Marina H Kuroda, Fabio A Barbieri
BACKGROUND: Due to improvement in movement performance, post-activation performance enhancement (PAPE) may open new possibilities to improve gait performance. However, no study has attempted to translate this phenomenon into walking. Therefore, the study aimed to test whether acute stretching followed by a conditioning exercise can improve subsequent gait performance in healthy adults. RESEARCH QUESTION: Can an exercise protocol subsequently improve gait performance? METHODS: Sixteen individuals walked four 10-m trials (in each period) before and after 7 min of an exercise protocol composed of stretching (focusing on the lower limb) and a conditioning exercise (standing calf-raise wearing a vest of 20 kg)...
2024: Frontiers in sports and active living
https://read.qxmd.com/read/38386649/persisting-effects-of-jaw-clenching-on-dynamic-steady-state-balance
#35
JOURNAL ARTICLE
Cagla Fadillioglu, Lisa Kanus, Felix Möhler, Steffen Ringhof, Marc Schmitter, Daniel Hellmann, Thorsten Stein
The effects of jaw clenching on balance has been shown under static steady-state conditions but the effects on dynamic steady-state balance have not yet been investigated. On this basis, the research questions were: 1) if jaw clenching improves dynamic steady-state balance; 2) if the effects persist when the jaw clenching task loses its novelty and the increased attention associated with it; 3) if the improved dynamic steady-state balance performance is associated with decreased muscle activity. A total of 48 physically active healthy adults were assigned to three groups differing in intervention (Jaw clenching and balance training (JBT), only balance training (OBT) or the no-training control group (CON)) and attending two measurement points separated by two weeks...
2024: PloS One
https://read.qxmd.com/read/38384332/transcranial-magnetic-stimulation-input-output-curve-slope-differences-suggest-variation-in-recruitment-across-muscle-representations-in-primary-motor-cortex
#36
JOURNAL ARTICLE
Lari M Koponen, Miles Martinez, Eleanor Wood, David L K Murphy, Stefan M Goetz, Lawrence G Appelbaum, Angel V Peterchev
Measurement of the input-output (IO) curves of motor evoked potentials (MEPs) elicited by transcranial magnetic stimulation (TMS) can be used to assess corticospinal excitability and motor recruitment. While IO curves have been used to study disease and pharmacology, few studies have compared the IO curves across the body. This study sought to characterize IO curve parameters across the dominant and non-dominant sides of upper and lower limbs in healthy participants. Laterality preferences were assessed in eight healthy participants and IO curves were measured bilaterally for the first dorsal interosseous (FDI), biceps brachii (BB), and tibialis anterior (TA) muscles...
2024: Frontiers in Human Neuroscience
https://read.qxmd.com/read/38380985/residual-force-depression-is-not-related-to-positive-muscle-fascicle-work-during-submaximal-voluntary-dorsiflexion-contractions-in-humans
#37
JOURNAL ARTICLE
Brent James Raiteri, Leon Lauret, Daniel Hahn
Residual force depression (rFD) following active muscle shortening is assumed to correlate most strongly with muscle work, but this has not been tested during voluntary contractions in humans. Using dynamometry, we compared steady-state ankle joint torques (N = 16) following tibialis anterior (TA) muscle-tendon unit (MTU) lengthening and shortening to the time-matched torque during submaximal voluntary fixed-end dorsiflexion reference contractions (REF) at a matched MTU length and EMG amplitude. Ultrasound revealed significantly reduced (P < 0...
February 21, 2024: Journal of Physiology
https://read.qxmd.com/read/38378866/muscle-stiffness-indicating-mission-crew-health-in-space
#38
JOURNAL ARTICLE
Britt Schoenrock, Paul E Muckelt, Maria Hastermann, Kirsten Albracht, Robert MacGregor, David Martin, Hans-Christian Gunga, Michele Salanova, Maria J Stokes, Martin B Warner, Dieter Blottner
Muscle function is compromised by gravitational unloading in space affecting overall musculoskeletal health. Astronauts perform daily exercise programmes to mitigate these effects but knowing which muscles to target would optimise effectiveness. Accurate inflight assessment to inform exercise programmes is critical due to lack of technologies suitable for spaceflight. Changes in mechanical properties indicate muscle health status and can be measured rapidly and non-invasively using novel technology. A hand-held MyotonPRO device enabled monitoring of muscle health for the first time in spaceflight (> 180 days)...
February 20, 2024: Scientific Reports
https://read.qxmd.com/read/38378402/quantifying-plantar-flexor-muscles-stiffness-during-passive-and-active-force-generation-using-shear-wave-elastography-in-individuals-with-chronic-stroke
#39
JOURNAL ARTICLE
Kalthoum Belghith, Mustapha Zidi, Jean Michel Fedele, Rayan Bou-Serhal, Wael Maktouf
OBJECTIVES: This study aims to investigate the mechanical properties of paretic and healthy plantar flexor muscles and assesses the spatial distribution of stiffness between the gastrocnemius medialis (GM) and lateralis (GL) during active force generation. METHODS: Shear wave elastography measurements were conducted on a control group (CNT, n=14; age=59.9±10.6 years; BMI=24.5±2.5 kg/m2 ) and a stroke survivor group (SSG, n=14; age=63.2±9.6 years; BMI=23...
February 19, 2024: Ultrasound in Medicine & Biology
https://read.qxmd.com/read/38376181/improved-selectivity-in-eliciting-evoked-electromyography-responses-with-high-resolution-spinal-cord-stimulation
#40
JOURNAL ARTICLE
Deepak Berwal, Alejandra Quintero, Ilknur Telkes, Marisa DiMarzio, Tessa Harland, Steven Paniccioli, John Dalfino, Yohannes Iyassu, Bryan L McLaughlin, Julie G Pilitsis
BACKGROUND AND OBJECTIVES: As spinal cord stimulation (SCS) offers a therapy for increasing numbers of patients with chronic pain and spinal cord injury, it becomes increasingly important to better understand its somatotopy. In this prospective study, we investigate whether high-resolution SCS (HR-SCS) offers improved selectivity assessed through elicitation of evoked electromyography (EMG) responses as compared with commercial paddle leads. METHODS: Vertical tripole configurations were used to elicit EMG responses in both types of paddles placed for standard-of-care indications between T6 and T10...
February 20, 2024: Neurosurgery
keyword
keyword
54527
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

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"

We want to hear from doctors like you!

Take a second to answer a survey question.