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https://www.readbyqxmd.com/read/29346624/data-driven-approaches-to-define-the-upper-limit-of-the-inter-movement-interval-of-periodic-leg-movements-during-sleep
#1
Raffaele Ferri, Alessandro Silvani, Francesco Rundo, Marco Zucconi, Debora Aricò, Oliviero Bruni, Luigi Ferini-Strambi, Mauro Manconi
Objective: to define statistically the upper limit of the inter-movement interval (IMI, the time interval between the onset of consecutive movements) of periodic leg movements during sleep (PLMS). Subjects and Methods: we computed the IMI distribution of a large sample (n = 141) of patients with restless legs syndrome (RLS) and analyzed it with two independent approaches, based on fitting either empirical functions or normal and exponential functions to the data...
January 13, 2018: Sleep
https://www.readbyqxmd.com/read/29339580/advantages-of-soft-subdural-implants-for-the-delivery-of-electrochemical-neuromodulation-therapies-to-the-spinal-cord
#2
Marco Capogrosso, Jérôme Gandar, Nathan Greiner, Eduardo Martin Moraud, Nikolaus Wenger, Polina Shkorbatova, Pavel E Мusienko, Ivan Minev, Stephanie P Lacour, Gregoire Courtine
We recently developed soft neural interfaces enabling the delivery of electrical and chemical stimulation to the spinal cord. These stimulations restored locomotion in animal models of paralysis. Soft interfaces can be placed either below or above the dura mater. Theoretically, the subdural location combines many advantages, including increased selectivity of electrical stimulation, lower stimulation thresholds, and targeted chemical stimulation through local drug delivery. However, these advantages have not been documented, nor have their functional impact been studied in-silico or in a relevant animal model of neurological disorders using a multimodal neural interface...
January 17, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29325115/fast-sleep-spindle-density-is-associated-with-rs4680-val108-158met-genotype-of-catechol-o-methyltransferase-comt
#3
Claudia Schilling, Lena Gappa, Michael Schredl, Fabian Streit, Jens Treutlein, Josef Frank, Michael Deuschle, Andreas Meyer-Lindenberg, Marcella Rietschel, Stephanie H Witt
Study Objectives: Sleep spindles are a hallmark of NREM stage 2 sleep. Fast sleep spindles correlate with cognitive functioning, and are reduced in schizophrenia. Although spindles are highly genetically determined, distinct genetic mechanisms influencing sleep spindle activity have not been identified so far. Spindles are generated within a thalamo-cortical network. Dopaminergic neurotransmission modulates activity within this network and importantly depends on activity of catechol-O-methyltransferase (COMT)...
January 6, 2018: Sleep
https://www.readbyqxmd.com/read/29221785/attention-deficit-hyperactivity-disorder-symptom-severity-and-sleep-problems-in-adult-participants-of-the-netherlands-sleep-registry
#4
Suzan W N Vogel, Denise Bijlenga, Jeroen S Benjamins, Aartjan T F Beekman, J J Sandra Kooij, Eus J W Van Someren
BACKGROUND: We examined whether current overall attention deficit hyperactivity disorder (ADHD), inattention, or hyperactivity symptom severities are associated with the current presence and persistent history of sleep problems. METHODS: N = 942 participants of the Netherlands Sleep Registry filled out online several validated questionnaires. Regression analyses were performed to assess the association between (1) current overall ADHD symptom severity and the current presence of sleep problems, (2) current ADHD symptom-severity groups and the persistent history of sleep problems, and (3) current inattention or hyperactivity symptom severities and the current presence of sleep problems...
December 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29221774/sleep-dependent-motor-sequence-memory-consolidation-in-individuals-with-periodic-limb-movements
#5
Valya Sergeeva, Jeremy Viczko, Laura B Ray, Adrian M Owen, Stuart M Fogel
Periodic limb movements (PLMs) during sleep increase with age and are associated with striatal neurodegeneration and dopamine deficiency. Limb movements are often associated with disruptions to non-rapid eye movement (NREM) sleep. Motor skill memory consolidation recruits the striatum, and learning-dependent striatal activation is associated with NREM sleep. Therefore, we investigated whether de novo individuals who significantly experience elevated levels of PLMs but have not been formally diagnosed with periodic limb movement disorder had learning and sleep-related memory deficits and whether these deficits were related to sleep quality and symptom severity...
December 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29205982/spasticity-or-periodic-limb-movements
#6
Jonathan Levy, Sarah Hartley, Elsa Mauruc-Soubirac, Antoine Leotard, Frederic Lofaso, Maria-Antonia Quera-Salva, Djamel Bensmail
BACKGROUND: Spasticity and spasms are distressing features of the upper motor neuron syndrome (UMNS) following spinal cord injuries (SCI) or multiple sclerosis (MS), and have common therapeutic implications. Despite an increase of antispastic drugs and strategies, sometimes up to the surgical implant of intrathecal baclofen pump, some patients still complain of disabling spasms, which poses diagnostic and therapeutic challenges. Although clinically similar, flexor spasms due to pyramidal tract disruption must be clearly differentiated from periodic limb movements (PLM), often accompanying restless leg syndrome (RLS) and occurring during sleep...
December 4, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29184756/balance-control-during-gait-initiation-state-of-the-art-and-research-perspectives
#7
REVIEW
Eric Yiou, Teddy Caderby, Arnaud Delafontaine, Paul Fourcade, Jean-Louis Honeine
It is well known that balance control is affected by aging, neurological and orthopedic conditions. Poor balance control during gait and postural maintenance are associated with disability, falls and increased mortality. Gait initiation - the transient period between the quiet standing posture and steady state walking - is a functional task that is classically used in the literature to investigate how the central nervous system (CNS) controls balance during a whole-body movement involving change in the base of support dimensions and center of mass progression...
November 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29157171/effect-of-changes-in-periodic-limb-movements-under-cpap-on-adherence-and-long-term-compliance-in-obstructive-sleep-apnea
#8
Gimbada B Mwenge, Ihsan Rougui, Daniel Rodenstein
Purpose of the study Periodic leg movements (PLMs) are found in 30% of patients suffering from OSA. Under CPAP, we observed that PLMs can increase, decrease, or remain unchanged. The predictors of these changes are not well established. Objective To determine the predictors of PLMs change under CPAP and its impact on long-term adherence. Materials and method The patients were referred to the sleep laboratory for snoring or sleepiness. A single PSG night has been performed before and after CPAP treatment. Data on medication used, comorbidities and ferritin level were collected...
November 20, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29149655/one-year-after-ischemic-stroke-changes-in-leg-movement-path-stability-in-a-speed-accuracy-task-but-no-major-effects-on-the-hands
#9
Albertas Skurvydas, Vilma Juodzbaliene, Tomas Darbutas, Marius Brazaitis
First year after the stroke is essential for motor recovery. The main motor control strategy (i.e., faster movement production at the expense of lower movement accuracy and stability, or greater movement accuracy and stability at the expense of slower movement) selected by poststroke patients during a unilateral speed-accuracy task (SAT) remains unclear. We aimed to investigate the poststroke (12 months after stroke) effects on the trade-off between movement speed and accuracy, and intraindividual variability during a motor performance task...
November 14, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29137566/a-novel-exercise-device-for-venous-thromboembolism-prophylaxis-improves-venous-flow-in-bed-versus-ankle-movement-exercises-in-healthy-volunteers
#10
Yukiyo Shimizu, Hiroshi Kamada, Masataka Sakane, Shizu Aikawa, Hirotaka Mutsuzaki, Kenta Tanaka, Hajime Mishima, Akihiro Kanamori, Tomofumi Nishino, Naoyuki Ochiai, Masashi Yamazaki
PURPOSE: Venous thromboembolism prophylaxis is crucial. To facilitate active ankle movement in postoperative and bedridden patients, we developed a novel leg exercise apparatus (LEX). We investigated the effect of the LEX by comparing increases in lower extremity venous flow during different modes of exercise using the LEX. METHODS: In eight healthy participants, we measured venous flow volume and velocity in the femoral vein using duplex ultrasonography at 1, 10, 20, and 30 min after completing three modes of 1-min LEX exercises...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29130575/a-prospective-investigation-to-evaluate-risk-factors-for-lower-extremity-injury-risk-in-male-youth-soccer-players
#11
Paul J Read, Jon L Oliver, Mark B A De Ste Croix, Gregory D Myer, Rhodri S Lloyd
There is an inherent risk of injury in male youth football; however, pertinent risk factors for injury have yet to be examined. This study used a prospective cohort design with 357 elite male youth football players (aged 10-18 years) assessed during the pre-season period and then monitored during the season recording all non-contact lower extremity injuries. Screening tests included: single leg hop for distance (SLHD); 75% of maximum hop and stick (75%Hop); single leg countermovement jump (SLCMJ); and the tuck jump assessment (TJ)...
November 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29114527/effects-of-special-exercise-programs-on-functional-movement-screen-scores-and-injury-prevention-in-preprofessional-young-football-players
#12
Engin Dinc, Bekir Eray Kilinc, Muge Bulat, Yunus Turgay Erten, Bülent Bayraktar
To increase movement capacity and to reduce injury risk in young soccer players by implementing a special functional exercise program based on functional movement screen (FMS) and correctives. 67 young male athletes 14-19 years of age from a Super League Football Club Academy participated in the study. Functional movement patterns were evaluated with FMS assessment protocol. Deep squat, hurdle step, inline lunge, shoulder mobility, active straight leg raise, trunk stability push-up, and rotatory stability were examined in FMS...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29114479/sample-entropy-identifies-differences-in-spontaneous-leg-movement-behavior-between-infants-with-typical-development-and-infants-at-risk-of-developmental-delay
#13
Beth A Smith, Douglas L Vanderbilt, Bryon Applequist, Anastasia Kyvelidou
We are interested in using wearable sensor data to analyze detailed characteristics of movement, such as repeatability and variability of movement patterns, over days and months to accurately capture real-world infant behavior. The purpose of this study was to explore Sample Entropy (SampEn) from wearable sensor data as a measure of variability of spontaneous infant leg movement and as a potential marker of the development of neuromotor control. We hypothesized that infants at risk (AR) of developmental delay would present significantly lower SampEn values than infants with typical development (TD)...
September 2017: Technologies
https://www.readbyqxmd.com/read/29054803/comparison-of-short-term-effects-of-mobilization-with-movement-and-kinesiotaping-on-pain-function-and-balance-in-patellofemoral-pain
#14
Serdar Demirci, Gizem Irem Kinikli, Michael J Callaghan, Volga Bayrakci Tunay
OBJECTIVE: The aim of this study was to compare the short-term effects of Mobilization with movement (MWM) and Kinesiotaping (KT) on patients with patellofemoral pain (PFP) respect to pain, function and balance. METHODS: Thirty-five female patients diagnosed with unilateral PFP were assigned into 2 groups. The first group (n = 18) received two techniques of MWM intervention (Straight Leg-Raise with Traction and Tibial Gliding) while KT was applied to the other group (n = 17)...
October 17, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29033618/schizophrenia-and-sleep-disorders-links-risks-and-management-challenges
#15
REVIEW
Rachel E Kaskie, Bianca Graziano, Fabio Ferrarelli
Schizophrenia is a major psychiatric disorder that has a massive, long-lasting negative impact on the patients as well as society. While positive symptoms (i.e., delusions and hallucinations), negative symptoms (i.e., anhedonia, social withdrawal), and cognitive impairments are traditionally considered the most prominent features of this disorder, the role of sleep and sleep disturbances has gained increasing prominence in clinical practice. Indeed, the vast majority of patients with schizophrenia report sleep abnormalities, which tend to precede illness onset and can predict an acute exacerbation of psychotic symptoms...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/29025100/an-examination-of-pain-s-relationship-to-sleep-fragmentation-and-disordered-breathing-across-common-sleep-disorders
#16
Jennifer M Mundt, Stephan Eisenschenk, Michael E Robinson
Objective: Short sleep duration and insomnia have been linked to higher pain and an increased risk of developing chronic pain, but relatively little research has examined the contribution of sleep disordered breathing (SDB) to pain. This study examined the unique contributions of SDB and insomnia to chronic pain. Subjects: Adult patients referred to an academic sleep center for overnight polysomnography were invited to participate. Methods: Participants (N = 105) completed questionnaires about their sleep and pain, including the Insomnia Severity Index, Medical College of Virginia Pain Questionnaire, and two weeks of sleep/pain diaries...
August 28, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29018561/disturbed-eeg-sleep-paranoid-cognition-and-somatic-symptoms-identify-veterans-with-post-traumatic-stress-disorder
#17
Harvey Moldofsky, Lorne Rothman, Robert Kleinman, Shawn G Rhind, J Donald Richardson
BACKGROUND: Chronic post-traumatic stress disorder (PTSD) behavioural symptoms and medically unexplainable somatic symptoms are reported to occur following the stressful experience of military combatants in war zones. AIMS: To determine the contribution of disordered EEG sleep physiology in those military combatants who have unexplainable physical symptoms and PTSD behavioural difficulties following war-zone exposure. METHOD: This case-controlled study compared 59 veterans with chronic sleep disturbance with 39 veterans with DSM-IV and clinician-administered PTSD Scale diagnosed PTSD who were unresponsive to pharmacological and psychological treatments...
November 2016: BJPsych Open
https://www.readbyqxmd.com/read/28981644/electrocorticographic-encoding-of-human-gait-in-the-leg-primary-motor-cortex
#18
Colin M McCrimmon, Po T Wang, Payam Heydari, Angelica Nguyen, Susan J Shaw, Hui Gong, Luis A Chui, Charles Y Liu, Zoran Nenadic, An H Do
While prior noninvasive (e.g., electroencephalographic) studies suggest that the human primary motor cortex (M1) is active during gait processes, the limitations of noninvasive recordings make it impossible to determine whether M1 is involved in high-level motor control (e.g., obstacle avoidance, walking speed), low-level motor control (e.g., coordinated muscle activation), or only nonmotor processes (e.g., integrating/relaying sensory information). This study represents the first invasive electroneurophysiological characterization of the human leg M1 during walking...
July 11, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28979226/adults-with-attention-deficit-hyperactivity-disorder-report-high-symptom-levels-of-troubled-sleep-restless-legs-and-cataplexy
#19
Bjørn Bjorvatn, Erlend J Brevik, Astri J Lundervold, Anne Halmøy, Maj-Britt Posserud, Johanne T Instanes, Jan Haavik
Objective: To compare the occurrence of a spectrum of different self-reported sleep problems in adults with ADHD and a control group, and to study the impact of current ADHD medication use and clinical ADHD subtype. Method: Cross-sectional study of 268 clinically ascertained adult ADHD patients (DSM-IV criteria) and 202 randomly selected controls. Sleep problems were self-reported using validated questions, partly from Global Sleep Assessment Questionnaire. Results: ADHD patients reported more sleep problems than controls: Lifetime occurrence of sleep problems (82...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28974941/multidisciplinary-rehabilitation-is-efficacious-and-induces-neural-plasticity-in-multiple-sclerosis-even-when-complicated-by-progressive-multifocal-leukoencephalopathy
#20
Elisabetta Groppo, Francesca Baglio, Davide Cattaneo, Eleonora Tavazzi, Niels Bergsland, Sonia Di Tella, Riccardo Parelli, Ilaria Carpinella, Cristina Grosso, Ruggero Capra, Marco Rovaris
A 48-year-old woman with multiple sclerosis (MS), treated with natalizumab for more than one year without clinical and magnetic resonance imaging (MRI) signs of disease activity, was diagnosed with definite progressive multifocal leukoencephalopathy (PML). She presented with subacute motor deficit of the right upper limb (UL), followed by involvement of the homolateral leg and urinary urgency. The patient was treated with steroids and plasma exchange. On follow-up MRI scans, the PML lesion remained stable and no MS rebounds were observed, but the patient complained of a progressive worsening of the right UL motor impairment, becoming dependent in most activities of daily living...
2017: Frontiers in Neurology
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