Lateral epicondylalgia presents as lateral elbow pain provoked by upper limb tasks. An experimental model of movement/muscle contraction and maintained over several days is required to better understand the mechanisms underlying sustained pain. This study investigated time course location induced nerve growth factor (NGF) injection into a wrist extensor muscle, whether movement muscle contraction/stretch pain.On Day 0 twenty-six painfree volunteers were injected with NGF (N = 13) or isotonic...

ABSTRACT Objective Mechanical pinprick stimuli delivered via robotic systems have been applied using parameters derived from studies handheld stimulators. This work evaluates the effects of stimulus force and duration on neurophysiological responses subjective perception. Methods Twenty-seven healthy volunteers received right volar forearm different combinations that configured three intensities: low, medium high impulse. The system recorded in real-time, participants rated perceived...

The dissipation factor and subsequently the characterization of viscoelasticity deposition films have become crucial for study biomolecular adsorption. Most commercial quartz crystal microbalance (QCM) systems offer this feature, but it has not been incorporated in open source systems. This article describes design, construction, simulation an QCM module measuring factor. includes two blocks: switch envelope detector. rapidly disrupts excitation crystal, connects output to detector which...

Reorganized force control may be an important adaptation following painful traumas. In this study, adaptations were assessed in elbow pain patients. Increasing the contraction demand overcome interference on motor and as such act internal control. It was hypothesized that patients compared with controls would present greater change direction of when increasing task.Elbow (n=19) asymptomatic participants (n=21) performed isometric wrist extensions at 5% to 70% maximum voluntary contraction....

Experimental models of pain in humans are crucial for understanding mechanisms. The most often used muscle involve the injection algesic substances, such as hypertonic saline solution or nerve growth factor induction delayed onset soreness (DOMS) by an unaccustomed exercise routine. However, these either invasive take substantial time to develop, and elicited level pain/soreness is difficult control. To overcome shortcomings, we propose elicit a localized application short-wave diathermy...

The aim of the study was to assess short-term changes in shoulder muscle activity elicited by dry needling chronic unilateral pain (USP) patients.A randomized, double-blind, placebo-controlled clinical trial conducted, which 30 volunteers with USP were recruited and randomly assigned either real or sham conditions. Pain intensity scores, pressure threshold, glenohumeral internal rotation angles, electromyographic during isotonic tasks (shoulder flexion extension) assessed before,...

Motor adaptations are responsible for recalibrating actions and facilitating the achievement of goals in an ever-changing environment. Once consolidated, decay motor adaptation is a process affected by available sensory information during deadaptation. However, cortical response to task error feedback deadaptation phase has received little attention. Here, we explored changes brain responses due task-related Twelve healthy volunteers were recruited study. Right hand movement EEG recorded...

Abstract Background Commonly used models for eliciting muscle pain involve the injection of algesic substances or induction delayed onset soreness. The former require invasive procedures, and time frame subsidence in latter can be inconvenient. This study presents a detailed spatiotemporal characterization new experimental model based on short‐wave diathermy (SWD), developed to overcome limitations existing models. Methods shoulder was selected as target site effects were tested two sessions...

Experimental models of pain in humans are crucial for understanding mechanisms. The most often used muscle involve the injection algesic substances, such as hypertonic saline solution or nerve growth factor, exercise-induced delayed onset soreness (DOMS). However, these either invasive take substantial time to develop, and elicited level pain/soreness is difficult control. To overcome shortcomings, we propose elicit by a localized application short-wave diathermy (SWD). In this crossover...

Several models have been developed to analyse cortical activity in response salient events constituted by multiple sensory modalities. In particular, additive compare event-related potentials (ERPs) stimuli from two or more concomitant modalities with the ERPs evoked unimodal stimuli, order study interactions. this approach, components that are not specific a modality commonly disregarded, although they likely carry information about stimulus expectation and evaluation, attentional...

Eine Epikondylitis lateralis betrifft Männer und Frauen gleichermaßen am häufigsten im Alter zwischen 40–60 Jahren, meist nach einer sportlichen oder beruflichen Überlastung der Handgelenksextensoren. Charakteristisch sind neben sensomotorischen Störungen Hyperalgesie Schmerzen beim Beugen Strecken des Ellbogens Ergreifen von Gegenständen, besonders mit gestrecktem Arm, sowie Faustschluss (Golferarm) Öffnen Finger (Tennisarm). Um die zugrundeliegenden Mechanismen Behandlungsmethoden zu...

Motor adaptations are responsible for recalibrating actions and facilitating the achievement of goals in an ever-changing environment. Once consolidated, decay motor adaptation is a process affected by available sensory information during deadaptation. However, cortical response to task error feedback deadaptation phase has received little attention. Here, we explored changes brain responses due task-related Twelve healthy volunteers were recruited study. Right hand movement EEG recorded...