This study aimed to investigate the visual biofeedback effect of a sensorized system for plantar pressure dynamic evaluation of in patients with a total hip replacement. Experimental group followed the rehabilitation training wearing sensorized insoles that provided images on three monitors. The control group followed the verbal instructions of physiotherapists during training. Weight bearing percentage healthy limb (WBPH), weight bearing percentage surgical limb (WBPS), swing healthy limb (SWH) and swing surgical limb (SWS) improved significantly more in the experimental group. The results underline the effectiveness of visual biofeedback based on sensorized system with dynamic evaluation of the plantar pressure.

• Klíčová slova
• clinical measure, hip replacement, rehabilitation, sensorized insoles, visual feedback, weight bearing,
• MeSH
• biofeedback (psychologie) MeSH
• lidé MeSH
• náhrada kyčelního kloubu * MeSH
• obuv MeSH
• senzorická zpětná vazba MeSH
• zatížení muskuloskeletálního systému MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

We analyzed the effect of 2-week individualized visual feedback-based balance training on the postural control of patients undergoing retrosigmoid microsurgical removal of vestibular schwannoma. We performed prospective evaluation of 17 patients allocated into two groups: feedback group (9 patients, mean age 37 years) and standard physiotherapy group (8 patients, mean age 44 years). Patients in both the groups were treated once per day by intensive rehabilitation from 5th to 14th postoperative day. Rehabilitation of patients in the feedback group was performed using the visual feedback and force platform. Results were evaluated on the beginning and at the end of rehabilitation program (e.g. 5th and 14th postoperative day). Outcome measures included posturography during quiet stance under four different conditions by the modified Clinical Test for Sensory Interaction of Balance. Body sway was evaluated from center of foot pressure. Compensation of Center of pressure (CoP) parameters in stance on firm surface was similar in the control and feedback groups. However, in stance on foam surface with eyes closed the patients from the feedback group were better compensated and CoP parameters differed significantly (p < 0.05). This prospective clinical study suggests that specific exercises with visual feedback improve vestibulospinal compensation in patients after vestibular schwannoma surgery and thus can improve their quality of life.

• MeSH
• cvičení * MeSH
• dospělí MeSH
• endoskopie MeSH
• kvalita života MeSH
• lidé středního věku MeSH
• lidé MeSH
• mikrochirurgie MeSH
• mladý dospělý MeSH
• nervus vestibulocochlearis chirurgie   MeSH
• počítačem asistovaná terapie přístrojové vybavení   MeSH
• pooperační komplikace rehabilitace   MeSH
• pooperační péče MeSH
• posturální rovnováha * MeSH
• prospektivní studie MeSH
• senzorická zpětná vazba * MeSH
• techniky fyzikální terapie přístrojové vybavení   MeSH
• vestibulární schwannom chirurgie   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

This paper presents L2 vowel remediation in a classroom setting via two real-time visual feedback methods: articulatory ultrasound tongue imaging, which shows tongue shape and position, and a newly developed acoustic formant analyzer, which visualizes a point correlating with the combined effect of tongue position and lip rounding in a vowel quadrilateral. Ten Czech students of the Swedish language participated in the study. Swedish vowel production is difficult for Czech speakers since the languages differ significantly in their vowel systems. The students selected the vowel targets on their own and practiced in two classroom groups, with six students receiving two ultrasound training lessons, followed by one acoustic, and four students receiving two acoustic lessons, followed by one ultrasound. Audio data were collected pre-training, after the two sessions employing the first visual feedback method, and at post-training, allowing measuring Euclidean distance among selected groups of vowels and observing the direction of change within the vowel quadrilateral as a result of practice. Perception tests were performed before and after training, revealing that most learners perceived selected vowels correctly already before the practice. The study showed that both feedback methods can be successfully applied to L2 classroom learning, and both lead to the improvement in the pronunciation of the selected vowels, as well as the Swedish vowel set as a whole. However, ultrasound tongue imaging seems to have an advantage as it resulted in a greater number of improved targets.

• Klíčová slova
• L2 vowel remediation, Swedish, formants, real-time visual feedback, ultrasound tongue imaging,
• Publikační typ
• časopisecké články MeSH

• Klíčová slova
• FEEDBACK *, LYSERGIC ACID DIETHYLAMIDE *, MENTAL DISORDERS *, SPEECH *,
• MeSH
• duševní poruchy * MeSH
• lidé MeSH
• LSD * MeSH
• psychiatrie * MeSH
• řeč * MeSH
• senzorická zpětná vazba * MeSH
• zpětná vazba * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• LSD * MeSH

Rehabilitation of patients after the brain injury requires employing of all available mechanisms of neuroplasticity. To achieve it, the voluntary activation of brain systems that are involved in the signal processing, represents the most effective tool. The control of balance is a complex neuronal mechanism based on unconditioned and conditioned reflexes, as well as on the actual cognitive processes. As it requires participation of several brain regions, training of the posture support mechanisms can provide a highly effective tool for rehabilitation. The aim of the study was to develop methods for the long-term follow up and training of the balance skills in patients with different types of brain impairment. To obtain standard data, the stabilometric platform Posturograph STP-03 and special examination programs were also used in the study of the equilibrium skill training by healthy volunteers. For the assessment of the learning efficiency two criteria from the recorded data were used - the velocity of adjustment of the gravity centre and the accuracy of the movements. Stabilometric platform was used also for the balance skill training with the visual biofeedback. Our results show that the proposed program for the equilibrium skill training offers a comparatively simple method of the adequate duration with numerical and graphical output, which allows fast interpretation of the treatment results. The synoptic form of results can also stimulate the patient's motivation during the long-term training for the mobility improvement.

• MeSH
• biofeedback (psychologie) * MeSH
• lidé MeSH
• poranění mozku patofyziologie   rehabilitace   MeSH
• posturální rovnováha * MeSH
• techniky fyzikální terapie přístrojové vybavení   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

BACKGROUND: There is growing evidence for the effectiveness of mirror therapy (MT) on pain reduction in patients with type I complex regional pain syndrome (CRPS I). AIM: To evaluate the efficacy of MT on pain reduction and hand function in subjects with unilateral upper extremity CRPS I. DESIGN: Randomized controlled trial with control group cross-over (half cross-over design). SETTING: Subjects with CRPS I were outpatients of a university hospital and cooperating centers. All patients carried out the daily exercise at home. POPULATION: Subjects with unilateral upper extremity CRPS I meeting the Budapest diagnostic criteria. METHODS: Subjects were randomly divided into two groups. Group A (N.=13) carried out a ten-minute MT exercise daily, for a total duration of six weeks. Group B (N.=14) acted as a control group for six weeks followed by six weeks of MT with the same characteristics as Group A. Upper extremity active range of motion, strength, dexterity, limb volume, affected-to-unaffected hand temperature difference, and health-related quality of life were evaluated before and after each period. Daily records on the visual analogue scale were used for pain evaluation. Effectiveness was calculated using mixed-effects modelling for between-group comparisons and within-group variability, and identification of significant predictors. RESULTS: Twenty-three females and four males with an average age of 56.1±9.6 years completed the study. Except for the affected-to-unaffected hand temperature difference, both groups consistently demonstrated significant or near-significant improvements in measured parameters after MT period. The improvements were evident upon an intergroup comparison of Group A and the control period of Group B as well as longitudinally within Group B. No significant improvement was found during the control period. CONCLUSIONS: Principles focused on mirror visual feedback to the central nervous system can sustain promising therapeutic potential as part of the treatment for pain reduction and hand function in CRPS I patients. CLINICAL REHABILITATION IMPACT: MT can be considered as part of the therapeutic regimen employed for the treatment of CRPS I.

• MeSH
• bolest MeSH
• horní končetina MeSH
• komplexní regionální syndromy bolesti * terapie   MeSH
• kvalita života MeSH
• lidé středního věku MeSH
• lidé MeSH
• senioři MeSH
• senzorická zpětná vazba MeSH
• Sudeckův syndrom * terapie   MeSH
• výsledek terapie MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• randomizované kontrolované studie MeSH

The effectivity of the compensatory role of visual biofeedback in cases of decreased stability of upright posture has been analysed. The deterioration of stance was modelled by a subject standing on a soft surface and with additional weight load on the body. The influence of visual biofeedback was positive only for the compensation of decreased stability of upright posture caused by artificially increased body weight of the subject. The compensatory effectivity of visual biofeedback in stabilization of upright posture during stance on a soft surface was practically negligible. The results have shown that effective compensation of the destabilizing effect by visual biofeedback in human upright posture was possible only when the activity and efficiency of efferent-action part of the postural system remained unchanged.

• MeSH
• biofeedback (psychologie) * MeSH
• dospělí MeSH
• lidé MeSH
• postura těla * MeSH
• zrak MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

The loss of a hand can significantly affect one's work and social life. For many patients, an artificial limb can improve their mobility and ability to manage everyday activities, as well as provide the means to remain independent. This paper provides an extensive review of available biosensing methods to implement the control system for transradial prostheses based on the measured activity in remnant muscles. Covered techniques include electromyography, magnetomyography, electrical impedance tomography, capacitance sensing, near-infrared spectroscopy, sonomyography, optical myography, force myography, phonomyography, myokinetic control, and modern approaches to cineplasty. The paper also covers combinations of these approaches, which, in many cases, achieve better accuracy while mitigating the weaknesses of individual methods. The work is focused on the practical applicability of the approaches, and analyses present challenges associated with each technique along with their relationship with proprioceptive feedback, which is an important factor for intuitive control over the prosthetic device, especially for high dexterity prosthetic hands.

• Klíčová slova
• biosensing, proprioception, proprioceptive feedback, prosthetic control, prosthetics,
• MeSH
• elektromyografie * MeSH
• lidé MeSH
• propriocepce MeSH
• protézy - design MeSH
• ruka MeSH
• senzorická zpětná vazba * MeSH
• svaly MeSH
• umělé končetiny * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

BACKGROUND: During and after exercise, dynamic 31 P MR parameters are typically measured using an MR-compatible ergometer. Self-built equipment for local condition can be constructed where possible. PURPOSE: To develop a pedal resistance ergometer with rocker arm based on a system that combines electric weight displacement, visual self-monitoring, and exercise triggering. The repeatability and reproducibility were tested. METHODS: The hardware and software for the ergometer were constructed from commercial components in a home laboratory. Twelve volunteers participated in the testing of the ergometer. RESULTS: A fully automated ergometer system was developed, allowing the pedal resistance to be adjusted during the examination. The system includes a self-monitoring and triggering mechanism that enables both the operator and subject to monitor pedal frequency and force. The operator can modify the pedal resistance as desired during the exercise. This self-monitoring solution is simple and cost-effective, requiring only a commercial potentiometer, an Arduino converter, and a conventional video projector with a personal computer (PC). Additionally, all system components are located outside the magnetic resonance (MR) room, avoiding interference with the MR system. Results of several test of the reproducibility/repeatability of power at three pedal resistance values (15%, 24%, 25% maximal voluntary force) were expressed both as a coefficient of variation ranging from 6% to 3.1% and as an intraclass correlation of coefficient ranging from 0.96 to 0.99. Similar values were also found for other dynamic parameters of 31 P MR spectroscopy. These findings are similar to published data obtained on different types of ergometers. CONCLUSIONS: Based on more than 1 year of usage, the ergometer proved successful in handling stationary and variable loads, and can be easily operated by a single user.

• Klíčová slova
• MR compatible ergometer, construction, dynamic 31P MR spectroscopy, self-monitoring,
• MeSH
• cvičení MeSH
• lidé MeSH
• magnetická rezonanční spektroskopie metody   MeSH
• magnetická rezonanční tomografie * MeSH
• reprodukovatelnost výsledků MeSH
• senzorická zpětná vazba * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

• MeSH
• biofeedback (psychologie) fyziologie   MeSH
• lidé MeSH
• nervus oculomotorius fyziologie   MeSH
• postura těla * MeSH
• zraková percepce fyziologie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH