Research Progress on Sensory Feedback Technology in Prostheses / 中国医疗器械杂志

As an important auxiliary tool for amputees to gain abled limb functions, prosthetic limbs with decoration or feedforward control channel could not meet the needs. In order to enable the prosthesis to deliver the information, includes temperature, pressure, position, shape and so on, a variety of sensory feedback methods have been integrated into the prosthesis. According to the position of the feedback terminal on the human body, the perceptual feedback systems include invasive and noninvasive sensory feedback. This review presents the research progress of these perceptual feedback techniques, and summarizes the problems in the application in artificial limbs. Finally, the development trend of sensory feedback technology in prostheses is prospected.

Espelho, espelho meu: referência visual e a coordenação interpessoal na dança jazz / Mirror, mirror on the wall: visual reference and interpersonal coordination in jazz dance

O objetivo deste estudo foi descrever as tendências de coordenação interpessoal na dança de duetos Jazz em condições que utilizam e não utilizam o espelho como referência visual para a aquisição de coordenação dançarina-professor. Participam do estudo quatro dançarinas experientes do município de Ilhéus/BA. As participantes realizaram 10 tentativas seguidas de uma coreografia em correspondência com a professora/pesquisadora. Cada participante individualmente foi orientada a realizar a sequência de Jazz em uma das condições observadas: (1) Com espelho: realizar a sequência posicionada de frente para o espelho; (2) Sem espelho: realizar a sequência posicionada de costas para o espelho. A tarefa foi filmada por uma câmera digital configurada para a gravação em 30 Hz. Para verificar o efeito do espelho, a sincronia dos movimentos foi analisada por meio do procedimento videogramétrico. Utilizando a técnica de correlação cruzada e correlação corrida foi possível identificar, a cada contato do pé com o solo, os momentos em-fase (simétrico), anti-fase (antissimétrico) e fora de fase (não simétrico). Os resultados indicaram forte sincronia em-fase, independentemente da disponibilidade do espelho (r = 0.8 a 1.0). As participantes que executaram de frente para o espelho apresentaram uma paisagem de coordenação predominantemente simétrica e com quase nenhuma defasagem temporal (Lag ≈ 0). Por outro lado, para as participantes que executaram sem o recurso do espelho apresentaram momentos de não simetria e pouca variação na defasagem temporal entre as tentativas. Foi possível verificar também que a primeira metade da sequência foi menos coordenada quando comparado com a segunda metade. Conclui-se, neste estudo preliminar, que dançarinas experientes foram pouco afetadas pelo uso do espelho, apresentando forte coordenação interpessoal e pouca defasagem temporal na aprendizagem de uma sequência de Jazz. Pode-se concluir que a metodologia empregada foi capaz de medir a coordenação satisfatoriamente, apresentando-se como um recurso promissor para a análise da coordenação interpessoal nas demais categorias e contextos da dança. (AU)

The aim of this study was to describe the trends of interpersonal coordination in the dance of Jazz duets in conditions that use and do not use the mirror as a visual reference for the acquisition of dancer-teacher coordination. Four experienced dancers from the municipality of Ilhéus/BA participate in the study. The participants made 10 attempts followed by a choreography in correspondence with the teacher/researcher. Each participant was individually instructed to perform the Jazz sequence in one of the observational conditions: (1) With mirror: perform the sequence whith mirror; (2) Without mirror: perform the sequence without mirror. The task was filmed by a digital camera configured for recording at 30 Hz. In order to check the mirror effect, the synchronization of the movements was analyzed using the videogrammetric procedure. Using the technique of cross correlation and running correlation, it was possible to identify (at each foot contact with the ground) the moments in-phase (symmetrical), anti-phase (antisymmetric) and out of phase (non-symmetric). The results indicated strong in-phase synchrony, regardless of the availability of the mirror (r = 0.8 to 1.0). The participants who performed in front of the mirror presented a predominantly symmetrical coordination landscape and with no time lag (Lag ≈ 0). On the other hand, for participants who performed without mirror presented moments of non-symmetry and little variation in the time lag between attempts. It was also possible to verify that the first half of the sequence was less coordinated when compared to the second half. It was concluded, in this preliminary study that experienced dancers were little affected by the use of the mirror, presenting strong interpersonal coordination and little time lag in learning a Jazz sequence. It can be concluded that the methodology used was able to measure coordination satisfactorily, presenting itself as a promising resource for the analysis of interpersonal coordination in other categories and contexts of dance. (AU)

Impact of auditory feedback alterations in individuals with stuttering / Impacto das alterações da retroalimentação auditiva em indivíduos com gagueira,

Abstract Introduction Electrophysiological evidence has reinforced the hypothesis that stuttering is associated with a deficit in modulation of the cortical auditory system during speech planning, contributing to an inefficient auditory feedback monitoring and, consequently, resulting in disfluencies. Objective To verify the impact of auditory feedback modifications on the spontaneous speech of individuals with stuttering. Methods Sixteen individuals, of both genders, aged 8-17 years and 11 months, with a diagnosis of persistent neurodevelopmental stuttering, were divided into two groups: Moderate Stuttering Group and Severe Stuttering Group. The testing procedures consisted of three stages: collection of identification data, audiological assessment and fluency evaluation of spontaneous speech in four auditory feedback conditions (non-altered, delayed, masked and amplified). The speech sample obtained in the non-altered feedback was considered the control; the others were considered as modified listening conditions. Results Regarding the stuttering-like disfluencies, a statistically significant difference was observed in the intragroup analysis of the Moderate Stuttering Group between non-altered and masked auditory feedback (p = 0.042), as well as between non-altered and amplified (p = 0.042). There was a statistically significant difference in the Severe Stuttering Group for all auditory feedback modifications in relation to the non-altered (delayed p = 0.012, masked p = 0.025 and amplified p = 0.042). There was also a reduction in flows of syllables and words-per-minute in the Moderate Stuttering Group for the delayed auditory feedback, as compared to non-altered (p = 0.017 and p = 0.025, respectively). Conclusion The effect of delayed auditory feedback was favorable for the Severe Stuttering Group, promoting speech fluency. The conditions of masked and amplified auditory feedback resulted in speech benefits in both groups, decreasing the number of stuttering-like disfluencies. The speech rate was not impaired by any listening condition analyzed.

Resumo Introdução Evidências eletrofisiológicas têm reforçado a hipótese de que a gagueira está associada a um déficit na modulação do sistema auditivo cortical durante o planejamento da fala, o que contribui para um monitoramento ineficiente da retroalimentação auditiva e, consequentemente, resulta em disfluências. Objetivo Verificar o impacto das modificações da retroalimentação auditiva na fala espontânea de indivíduos com gagueira. Método Participaram 16 indivíduos de ambos os sexos, na faixa de 8 a 17 anos e 11 meses, com diagnóstico de gagueira neurodesenvolvimental persistente, divididos em dois grupos: grupo de gagueira moderada e grupo de gagueira grave. Os procedimentos constaram de três etapas: coleta dos dados de identificação, avaliação audiológica e avaliação da fluência da fala espontânea em quatro condições de retroalimentação auditiva (habitual, atrasada, mascarada e amplificada). A amostra de fala obtida na retroalimentação habitual foi considerada controle; as demais foram consideradas como condições de escuta modificadas. Resultados Com relação às disfluências típicas da gagueira, na análise intragrupo do grupo de gagueira moderada, observou-se diferença estatisticamente significante entre a retroalimentação auditiva habitual e a mascarada (p = 0,042); assim como entre a habitual e a amplificada (p = 0,042). No grupo de gagueira grave, houve diferença estatisticamente significante em todas as modificações de retroalimentação auditiva em relação à habitual (atrasada p = 0,012; mascarada p = 0,025 e amplificada p = 0,042). Verificou-se, ainda, redução dos fluxos de sílabas e de palavras por minuto no grupo de gagueira moderada na retroalimentação auditiva atrasada, quando comparada com a habitual (p = 0,017 e p = 0,025; respectivamente). Conclusão O efeito da retroalimentação auditiva atrasada foi favorável para o grupo de gagueira grave, pois promoveu a fluência da fala. As condições de retroalimentação auditiva mascarada e amplificada ocasionaram benefícios na fala espontânea de ambos os grupos, diminuíram a quantidade de disfluências típicas da gagueira. A velocidade de fala não foi prejudicada por nenhuma condição de escuta analisada.

Influência da privação visual no desempenho do teste de 10rm em homens treinados / Influence of visual privacy on 10rm test performance in trained men / Influencia de la privación visual en el rendimiento de la prueba de 10rm en hombres entrenados

O objetivo do estudo foi avaliar e comparar a carga deslocada no teste de 10 RM sob as condições com e sem a privação visual. A amostra foi composta por 13 homens treinados em força (idade 27,7 ±3 anos). Foram realizadas quatro sessões para teste e reteste de 10 RM nos exercícios: Supino horizontal (SH) e Hack Machine (HM). Para a análise estatística, foi utilizado o test T pareado para comparar os resultados obtidos. Como resultado obtivemos que a carga deslocada com privação visual (PV) no (SH) foi de 150 kg e sem privação (SPV) foi de 135 kg, e para o HM CPV a carga foi de 54 kg e SPV 48 kg. Com base nos resultados apresentados, conclui-se que a carga deslocada CPV foi significativamente maior do que com a visualização das cargas.

the objective of the study was to evaluate and compare the displaced load in the 10 RM test under conditions with and without visual deprivation. The sample consisted of 13 men trained in strength (age 27.7 ± 3 years). Four sessions were used to test and retest 10 RM in the exercises: Horizontal Supine (SH) and Hack Machine (HM). For the statistical analysis, the paired T-test was used to compare the results obtained. As a result we found that the displaced load with visual deprivation (SH) in the SH was 150 kg and without deprivation (SPV) was 135 kg and for the HM CPV the load was 54 kg and the SPV was 48 kg. Based on the results presented, it was concluded that the CPV displaced load was significantly higher than with the visualization of the loads.

El objetivo del estudio fue evaluar y comparar la carga desplazada en la prueba de 10 RM bajo las condiciones con y sin la privación visual. La muestra fue compuesta por 13 hombres entrenados en fuerza (edad 27,7 ± 3 años). Se realizaron cuatro sesiones para prueba y reteste de 10 RM en los ejercicios: Supino horizontal (SH) y Hack Machine (HM). Para el análisis estadístico, se utilizó el test T pareado para comparar los resultados obtenidos. Como resultado obtuvimos que la carga desplazada con privación visual (PV) en el (SH) fue de 150 kg y sin privación (SPV) fue de 135 kg y para el HM CPV la carga fue de 54 kg y SPV 48 kg. Con base en los resultados presentados, se concluye que la carga desplazada CPV fue significativamente mayor que con la visualización de las cargas.

Neuromuscular and motor patterns in breaststroke technique / Padrões motores e musculares na técnica de bruços

Abstract The aim of this study was to analyze the inter-temporal neuromuscular and motor patterns in breaststroke technique. Five national level male swimmers performed 200 m breaststroke at maximal effort. Electromyography data onbiceps brachii, deltoid anterior, pectoralis major and triceps brachiiwere analysed. The relative duration of active and non-active phase and the average rectified value for the neuromuscular patterns were recorded. The swim bouts were videotaped in sagittal plane with a pair of cameras and the Theme software 5.0 was used toanalyse the detected patterns in each swimmer. The neuromuscular pattern revealed that by the average rectified value the biceps brachiiand triceps brachiiwere increased at the end of the test for swimmers 1 and 5, while biceps brachii. deltoid anteriorand pectoralis majorwere increased for swimmers 2 and 4. Different motor patterns between cycles, and between swimmers were observed.We found similarities between the swimmers, adjusting their style to the technical model. The absence of a neuromuscular pattern for all swimmers could be related to different technical models used by each swimmer, as presented in the motor patterns. These findings suggested that each swimmers adapted their own motor and neuromuscular pattern in a unique and distinct way.

Resumo O objetivo deste estudo consistiu em analisar a relação entre os padrões neuromusculares e motores na técnica do nado de peito. Cinco nadadores masculinos de nível nacional realizaram 200 mnado peito na máxima intensidade.Foram registrados dados de Electromiografia do bicepsbrachii, deltoid anterior, pectoralis major etricepsbrachii. A duração relativa da fase ativa e não ativa e o valor médio retificado dos padrões neuromusculares foram analisados. Os percursos de nado foram gravados no plano sagital e analisados para detectar os padrões motores de cadanadador através do software THÉME software 5.0. Os padrões neuromusculares indicaram, por meio do valor médio retificado que a atividade dos músculos bíceps brachii e tríceps brachii aumentam no final do teste para o nadador 1 e 5, enquanto que o bíceps brachii. deltoid anterior. pectoralis major aumentam para o nadador 2 e 4. Diferentes padrões motores entre ciclos e entre nadadores foram observados, indicando que existem semelhanças entre eles, levando a um ajuste do estilo e modelo técnico de nado. A ausência de um padrão neuromuscular para todos os nadadores poderá estar relacionada com os diferentes modelos técnicos utilizados por cada nadador, como demonstrado nos padrões motores. Esses resultados sugerem que cada nadador adapta o seu padrão motor e muscular de uma forma única e distinta.

Effect of Visual Feedback Squat Motion on Core Muscles Thickness of Young People with Lower Back Pain

PURPOSE: This study examined the effect of visual feedback squat on the core muscle thickness of young adults experiencing back pain. METHODS: Thirty adult men and women who experienced back pain were assigned randomly to 15 members of the visual feedback squat group (VSG) and 15 of the normal squat group (NSG) to train three times a week for a total of eight weeks. The core muscle thickness was compared prior to the test for four weeks and eight weeks after the test by dividing it into warm-up exercise, main exercise, and 10 minutes finishing exercise. Before, and four weeks and eight weeks later, the thickness of the core muscle was compared using an ultrasonic imaging system. Repeated measured ANOVA was performed to compare the groups, and a Bonferroni test was performed as a post-hoc test to assess the significance of the timing of the measurements in each group according to the periods. An independent t-test was conducted to test the significance between the groups according to the measurement points. RESULTS: A significant change in the main effects of time and interactions of the time difference in muscle thickness of transvers abdominis were observed between the visual feedback squat and control groups according to the measurement point (p0.05). CONCLUSION: These findings suggest that visual feedback squat exercise is expected to have positive effects on the development of transverse abdominis in core muscles.

The Effect of Postural Correction and Visual Feedback on Muscle Activity and Head Position Change During Overhead Arm Lift Test in Subjects with Forward Head Posture

PURPOSE: This study aimed to investigate the immediate effects of posture correction and real-time visual feedback using a video display on muscle activity and change of head position during overhead arm lift test in individuals with forward head posture. METHODS: Fifteen subjects with forward head posture and fifteen normal subjects who volunteered were included in this study. During both groups performed the overhead arm lift test, the muscle activity of the upper trapezius, serratus anterior, sternocleidomastoid, and lower trapezius muscle were measured using electromyography, and head position change was measured using photographs. Then, forward head posture group was asked to perform overhead arm lift test again after posture correction and real-time visual feedback using a video display respectively. One-way analysis of variance (ANOVA) was used to analyze four conditions: pre-test, posture correction, real-time visual feedback, and the control group. RESULTS: The upper trapezius and lower trapezius muscle activity significantly decreased posture correction, real-time visual feedback, and control group than pre-test of forward head posture group (p<0.05). The sternocleidomastoid muscle significantly decreased real-time visual feedback and control group than pre-test of forward head posture group. Head position change significantly decreased three conditions than pre-test of forward head posture group and real-time visual feedback and control group significantly decreased than posture correction. CONCLUSION: This study recommend for maintaining cervical stability during the overhead arm lift test, postural control using real-time visual feedback is more effective in subjects with forward head posture.

Research progress on perception and feedback technology in artificial prosthesis / 生物医学工程学杂志

Artificial prosthesis is an important tool to help amputees to gain or partially obtain abled human limb functions. Compared with traditional prosthesis which is only for decoration or merely has feedforward control channel, the perception and feedback function of prosthesis is an important guarantee for its normal use and self-safety. And this includes the information of position, force, texture, roughness, temperature and so on. This paper mainly summarizes the development and current status of artificial prostheses in the field of perception and feedback technology in recent years, which is derived from two aspects: the recognition way of perception signals and the feedback way of perception signals. Among the part of recognition way of perception signals, the current commonly adopted sensors related to perception information acquisition and their application status in prosthesis are overviewed. Additionally, from the aspects of force feedback stimulation, invasive/non-invasive electrical stimulation, and vibration stimulation, the feedback methods of perception signals are summarized and analyzed. Finally, some problems existing in the perception and feedback technology of artificial prosthesis are proposed, and their development trends are also prospected.

Effects of Spinal Stabilization Exercises Using Visual Feedback on Gross Motor Function and Balance in Children with Cerebral Palsy

PURPOSE: This study examined the effects of spinal stabilization exercises using visual feedback on the gross motor function and balance of the sitting posture in children with cerebral palsy.METHODS: The subjects were 18 children with cerebral palsy aged 8–15 years in the I–III stages of the Gross Motor Function Classification System. The subjects were divided into an experimental group (n=9) and control group (n=9). The experimental group was treated with 30 minutes of neurodevelopmental treatment and 20 minutes of spinal stabilization exercises using visual feedback. The control group was treated with 30 minutes of neurodevelopmental treatment and 20 minutes of spinal stabilization exercises without visual feedback. Both groups participated in the experiment twice a week for eight weeks. The Gross Motor Function Measurement was performed to evaluate the changes between pre- and the post-intervention in gross motor function. The Seated Limit of Stability Surface Area was measured to evaluate the changes in trunk balance.RESULTS: Both experimental and control groups showed a significant increase in the gross motor function and trunk balance (p<0.05). The experimental group showed a significant increase in gross motor function compared to the control group (p<0.05). The experimental group showed a significant increase in the dynamic trunk balance in all directions when measuring the Seated Limit of Stability Surface Area (p<0.05).CONCLUSION: Spinal stabilization exercises using visual feedback for the neurodevelopmental treatment of children with cerebral palsy can improve their gross motor function and trunk balance when in a sitting posture more effectively.

Influence of Slashpipe Exercise on Symmetrical Contraction of Trunk Muscle in Normal Adults

PURPOSE: This study examined the effects of slashpipe exercise on reducing the thickness of the left and right external oblique, internal oblique, transverse abdominis, erector spinae, and multifidus muscles.METHODS: A total of 29 healthy adult men and women were included in the study. They performed trunk flexion in the supine position and trunk extension in the prone position with a slashpipe and weight bar. The external oblique, internal oblique, and transverse abdominis muscles were measured in the supine position, while the erector spinae and multifidus muscles were measured in the prone position. The data were analyzed using the SPSS ver 21.0 statistical program. The difference in thickness between the right and left sides of the trunk muscle was analyzed by repeated measures analysis. The statistical significance level was set to p<0.05.RESULTS: The results showed that the slashpipe exercise reduced significantly the difference in thickness of the oblique internus and erector spinae muscles compared to the weight bar exercise.CONCLUSION: The chaotic fluidity of the fluid filled inside the slashpipe could be used as sensory feedback information on body mal-alignment, which would have positively affected the symmetrical contraction of the trunk muscles as a trigger for self-correction. Therefore, it will have a useful effect not only on the health of the general public, but also on low back patients and athletes with muscle asymmetry.

Differences in motor control of an aiming task in different group ages of the elderly

This study aimed to investigate how different age groups of older adults perform and control movements in a goal-directed aiming task and the importance of visual feedback during these movements. Methods: Participants included 22 old adults, divided in two age groups: younger (60-70 yr) and older (80-90 yr). Subjects performed the task in a condition with vision and in a condition where vision was deprived. Results: In the vision condition, younger subjects showed smaller movement and reaction times, smaller radial errors, higher peak velocities, lower relative times to reach peak velocity than older subjects. In the vision-deprived condition the same results were found, except for radial error measure, where no significant effect for age groups was found. Conclusion: Younger subjects seemed to rely more on visual online feedback than older subjects and older subjects use other sensory sources to meet the possible deficits of information obtained by vision.(AU)

The Effect of Visual Feedback of Head Angles With Using a Mobile Posture-Aware System on Craniocervical Angle and Neck and Shoulder Muscles Fatigue During Watching the Smartphone

PURPOSE: To find the effect of visual feedback of head angle with using a mobile posture-aware system on craniocervical angle and neck and shoulder muscles fatigue for preventing or decreasing the forward head posture. METHODS: Twenty-four healthy young adults in Chungbuk to participate in this study. The subjects started to watch a movie clip for 10 minutes with visual feedback in 0°, 30°, and 60° of head angles. During the task, surface electromyography (EMG) was used to collect data from the upper trapezius (UT), sternocleidomasetoid muscle (SCM), cervical erecter spinae (CES) during watching the smartphone. Craniocervical angles were measured using a sagittal-view photograph of the subject in a sitting posture. A one-way repeated analysis of variance with a significant level of 0.05 used for statistical analysis. RESULTS: Craniocervical angle with 0° visual feedback was significantly greater than 30°and 60°. Craniocervical angle with 30° visual feedback was significantly greater than 60°. In addition, MDF of UT muscles in 0° and 30° of visual feedback was significantly greater than 60°. CONCLUSION: We concluded that 0° visual feedback of head angle with using a mobile posture-aware system would be beneficial to prevent or decrease forward head posture during watching a smartphone. We also could recommend using of 30° visual feedback in case of caring UT muscle fatigue primarily.

Desenvolvimento e aceitabilidade de cookies formulados a partir de bagaço de mandioca / Development and acceptability of cassava bagasse cookies

O bagaço de mandioca, resíduo da extração de amido, apresenta alto teor de fibras e pode ser utilizado em diversas aplicações, dentre elas biscoitos. Neste trabalho objetivou-se utilizar bagaço de mandioca na produção de cookies. O bagaço foi obtido junto à empresa Cia Lorenz, da cidade de Umuarama-PR, com umidade de 84,21% e 11,20% de amido. As quatro formulações de cookie foram preparadas (F1; F2; F3; F4) empregando variações na proporção farinha de trigo/ bagaço de mandioca (50/00; 27,8/40; 17,8/50; 7,8/60). Os ingredientes foram misturados em batedeira, divididos em porções, laminados na espessura média de 5 mm e cortados em matriz de 30 mm de diâmetro. Os biscoitos foram analisados antes do forneamento (AF) e após o forneamento (DF) quanto: a) ao volume de expansão e b) umidade. Os biscoitos tipo cookies foram avaliados por 100 participantes em relação a aceitação sensorial por atributos e intenção de compra. Avaliou-se o teor de fibra bruta do bagaço de mandioca e dos biscoitos formulados. A umidade (AF/DF) dos biscoitos foi de F1: 28,05%/3,33%; F2: 40,24%/3,77%; F3: 45,19%/4,98% e F4:54,12%/6,17%. O volume de expansão determinado foi de F1: 4,05cm3; F2: 0,77cm3; F3: -0,39cm3; F4: -1,13cm3. O teor de fibras brutas do bagaço foi de quase 17% e dos biscoitos foi de F1: 1,14%; F2: 5,51%; F3: 7,98% e F4: 10,22%, demonstrando quantidade considerável de fibras nos biscoitos acrescidos do bagaço. As amostras F3 e F4 obtiveram altos escores na aceitação global (7,1 e 7,25, respectivamente) e textura (6,07 e 6,13, respectivamente). O maior nível de adição do bagaço de mandioca não proporcionou alteração na cor, aroma e sabor avaliados sensorialmente em relação a amostra isenta de bagaço. Com relação à intenção de compra, as amostras F1, F3 e F4 obtiveram as maiores médias, mostrando que há um potencial mercado para o produto proposto.

Cassava bagasse, the residue of starch extraction, has high fiber content and can be used in various applications, including biscuits. This study aimed at using cassava bagasse in the production of cookies. Bagasse was obtained from Cia Lorenz (Umuarama-PR), with moisture of 84.21±0.04% and 11.20±0.05% starch. Four cookie formulations were prepared (F1; F2; F3; F4) employing variations in the proportion of wheat flour/cassava bagasse (50/00, 27.8/40, 17.8/50, 7.8/60). The ingredients were mixed in the mixer, and divided into portions, laminated at an average thickness of 5 mm and cut in a 30-mm diameter matrix. The biscuits were analyzed before and after baking in relation to volume expansion and moisture. Cookies were evaluated by 100 participants in relation to sensory acceptance by attributes and purchase intention. Crude fiber content of the cassava bagasse and the formulated biscuits were evaluated. Moisture content (FA/DF) of the cookies was F1: 28.05%/3.33%; F2: 40.24%/3.77%; F3: 45.19%/4.98% and F4: 54.12%/6.17%. The expansion volume was F1: 4.05cm3; F2: 0.77cm3; F3: -0.39cm3; F4: -1.13cm3. Crude fiber content of the bagasse was almost 17% and of the biscuits was F1: 1.14%; F2: 5.51%; F3: 7.98% and F4: 10.22%, demonstrating a considerable amount of fiber in the biscuits added to the bagasse. Samples F3 and F4 obtained high scores in global acceptance (7.1 and 7.25, respectively) and texture (6.07 and 6.13, respectively). The higher level of cassava bagasse did not change the color, aroma and taste evaluated in relation to the bagasse-free sample. Regarding the purchase intention, samples F1, F3 and F4 obtained the highest averages, showing that there is a potential market for the proposed product.

Psychotherapies for the treatment of phantom limb pain / Uso de psicoterapias como tratamiento del dolor de miembro fantasma

Abstract Introduction: The phantom limb pain has been described as a condition in which patients experience a feeling of itching, spasm or pain in a limb or body part that has been previously amputated. Such pain can be induced by a conflict between the representation of the visual and proprioceptive feedback of the previously healthy limb. The phantom limb pain occurs in at least 42-90% of amputees. Regular drug treatment of phantom limb pain is almost never effective. Methods: A systematic review of the literature was conducted in Medline and Cochrane using the MESH terms "phantom limb pain" and "psychotherapy", published in the last 10 years, in English and Spanish, finding 49 items. After reviewing the abstracts, 25 articles were excluded for not being related to the objective of the research. Additionally cross references of included articles and literature were reviewed. Objectives: To describe the psychotherapies used in the management of phantom limb pain, their effectiveness and clinical application reported in the literature. Aims: The mechanisms underlying phantom limb pain were initially explained, as were the published studies on the usefulness of some psychotherapies such as mirror visual feedback and immersive virtual reality, visual imagery, desensitisation and reprocessing eye movements and hypnosis. Conclusions: The phantom limb pain is a complex syndrome that requires pharmacological and psychotherapeutic intervention. The psychotherapies that have been used the most as adjuvants in the treatment of phantom limb pain are mirror visual feedback, desensitisation and reprocessing eye movements, imagery and hypnosis. Studies with more representative samples, specifically randomised trials are required.

Resumen Introducción: El dolor de miembro fantasma ha sido descrito como una condición en la que los pacientes experimentan una sensación de prurito, espasmo o dolor en un miembro o parte del cuerpo previamente amputado. Dicho dolor puede ser inducido por un conflicto entre la representación de la retroalimentación visual y propioceptiva del miembro previamente sano. El dolor de miembro fantasma ocurre en al menos 42 al 90% de los amputados. El tratamiento farmacológico regular del dolor del miembro fantasma casi nunca es efectivo. Método: Se realizó una revisión sistemática en las bases de datos Medline y Cochrane usando palabras MESH "phantom limb pain" y "psychotherapy", publicados en los últimos 10 anos, en español e inglés, encontrando 49 artículos. Al revisar los resúmenes, se excluyeron 25 artículos por no ser afines con el objetivo de la investigación. Adicionalmente se revisaron referencias cruzadas de los artículos incluidos y literatura médica. Objetivos: Describir las psicoterapias usadas en el manejo del dolor de miembro fantasma, su efectividad y aplicación clínica reportada en la literatura. Desarrollo: Se explican inicialmente los mecanismos subyacentes al dolor de miembro fantasma y se describen los estudios publicados sobre la utilidad del uso de algunas psicoterapias como la retroalimentación visual con espejo y con realidad virtual inmersiva, imaginería visual, reprocesamiento y desensibilización por movimientos oculares e hipnoterapia. Conclusiones: El dolor de miembro fantasma es un síndrome complejo que requiere intervención farmacológica y psicoterapéutica. Las psicoterapias que más se han usado como coadyuvantes en el tratamiento del dolor de miembro fantasma son la retroalimentación visual con espejo, la desensibilización y reprocesamiento por movimientos oculares, la imaginería y la hipnosis. Se requieren estudios con muestras más significativas, específicamente estudios clínicos aleatorizados.

Influencia del esquema corporal en el rendimiento deportivo / Influence of corporal scheme on sports performance

RESUMEN Introducción: el esquema corporal es la representación abstracta que las personas perciben de su cuerpo en el espacio situándolo con una amplia participación propioceptiva. Además, se modifica a medida que el deportista recibe estímulos somatosensoriales y sociales con el fin de perfeccionar el gesto deportivo. Objetivo: este documento hace parte del marco teórico del estudio "Imagen corporal en futbolistas", y tiene como objetivo describir la influencia del esquema corporal en el rendimiento deportivo y cómo influye el deporte en su estructuración. Materiales y métodos: búsqueda bibliográfica en las bases de datos Pubmed, Science Direct, Lilacs, Proquest, Ovid y PEDro de publicaciones registradas en el periodo 1998-2014. Se obtuvieron un total de 120 artículos, de los cuales 48 fueron seleccionados. Conclusiones: todos los procesos de aprendizaje motor se ven representados a nivel cerebral, en lo que se define como esquema corporal, el cual brinda la posibilidad de modificarse de manera continua acorde los estímulos recibidos por el deportista, con el fin de perfeccionar el rendimiento deportivo. med.uis. 2017;30(2):63-9.

ABSTRACT Introduction: the corporal scheme is the abstract representation that people perceive of their body in the space, derived from sensorial stimuli putting it with an ample proprioceptive participation. Besides, it's modified as the athlete receives somatosensory and social stimuli to perfect the sports gesture. Objective: this document is part of the theoretical framework of the study "Body image in soccer players", and aims to describe the influence of body schema on sports performance and how sports influence in structuring. Materials and methods: bibliographic search in the databases Pubmed, Science Direct, Lilacs, Proquest, Ovid and PEDro of publications registered in the period 1998-2014. A total of 120 articles were obtained, of which 48 were selected. Conclusions: all motor learning processes are represented at the brain level, in what is defined as a body schema, which provides the possibility to modify continuously according to the stimuli received by the athlete, in order to perfect the sport performance. med.uis. 2017;30(2):63-9.

Realidade virtual em pacientes pós-acidente vascular cerebral: revisão sistemática com metanálise de ensaios clínicos randomizados / Virtual reality in patients after stroke: a systematic review and meta-analysis of randomized controlled trials

A prática da realidade virtual na reabilitação de pacientes pós-AVC permite a realização de tarefas orientadas e funcionais, possibilitando fácil adaptação ao grau de função dos pacientes, favorecendo na reabilitação. O objetivo do trabalho foi revisar sistematicamente os efeitos da realidade virtual comparada à fisioterapia convencional ou grupo controle em relação ao equilíbrio, função motora e marcha em pacientes com sequelas crônicas de AVC. A busca incluiu as bases Medline, Pedro, Lilacs e Cochrane Central do início das bases até junho de 2014. Dos 549 ensaios clínicos randomizados identificados, 24 foram incluídos. A intervenção com realidade virtual melhorou: o equilíbrio avaliado com Escala de Equilíbrio de Berg (2,55 pontos; IC 95%: 0,79 a 4,30; I²: 93%); função motora de mão avaliada com Box and Block Test (BBT) (5,89 blocos; IC 95%: 4,32 a 7,46; I²: 0%); função motora de membro superior avaliado com Escala de Fulg-Meyer (3,15 pontos; IC 95%: 2,02 a 4,28; I²: 33%); marcha com teste de caminhada de 10 metros (2,37 cm/s; IC 95%: -8,25 a 13,00; I²: 94%). A realidade virtual mostrou resultados positivos nos pacientes com sequelas de AVC, sendo uma possibilidade relevante dentre os recursos já existentes. (AU)

The practice of virtual reality in the rehabilitation post stroke patients allows oriented and functional tasks, enabling easy adaptation to patients' level of function, favoring rehabilitation. The aim of this study was to review systematically the effects of virtual reality compared to conventional physical therapy or control group regarding on balance, motor function and gait in patients with chronic sequelae of stroke. The search included the Medline, Pedro, Lilacs and Cochrane Central databases from the beginning of bases through June 2014. We identified 549 randomized clinical trials, but included only 24. The intervention improved with virtual reality: the balance assessed with the Berg Balance Scale (2.55 points; 95% CI: 0.79 to 4.30; I²: 93%); hand motor function assessed with Box and Block Test (BBT) (5.89 blocks; 95% CI: 4.32 to 7.46; I²: 0%); of upper limb motor function assessed with Fulg-Meyer Scale (3.15 points; 95% CI: 2.02 to 4.28; I²: 33%); march to walk 10 meters test (2.37 cm / s; 95% CI: -8.25 to 13.00; I²: 94%). The virtual reality showed positive results in patients with stroke sequelae, one possibility among relevant existing resources.(AU)

Efeito da retroalimentação auditiva atrasada na gagueira com e sem alteração do processamento auditivo central / Effect of delayed auditory feedback on stuttering with and without central auditory processing disorders

RESUMO Objetivo Verificar o efeito da retroalimentação auditiva atrasada na fluência da fala de indivíduos que gaguejam, com e sem alteração do processamento auditivo central. Método Participaram 20 indivíduos com gagueira, de sete a 17 anos, divididos em dois grupos, cada um com 10 indivíduos: Grupo Gagueira com Transtorno do Processamento Auditivo (GGTPA) e Grupo Gagueira (GG) sem alteração de processamento auditivo central. Os procedimentos foram: avaliação da fluência com retroalimentação auditiva habitual (RAH) e atrasada (RAA), e avaliação da gravidade da gagueira e do processamento auditivo central (PAC). O software Fono Tools foi utilizado para provocar o atraso de 100 milissegundos na retroalimentação auditiva. O teste dos Postos Sinalizados de Wilcoxon foi utilizado na análise intragrupos, e o teste de Mann-Whitney, na análise intergrupos. Resultados A RAA ocasionou no GG redução estatisticamente significante: no escore da frequência das disfluências típicas da gagueira na análise do Instrumento de Gravidade da Gagueira, na quantidade de bloqueios e de repetições de palavras monossilábicas, e na frequência de disfluências típicas da gagueira de duração. O atraso na retroalimentação auditiva não provocou efeitos estatisticamente significantes na fluência do GGTPA, grupo dos indivíduos com gagueira com alteração do PAC. Conclusão O efeito da retroalimentação auditiva atrasada na fala de indivíduos com gagueira foi diferente nos indivíduos com e sem alteração do processamento auditivo central, pois houve melhora da fluência apenas nos indivíduos sem alteração do PAC.

ABSTRACT Purpose To verify the effect of delayed auditory feedback on speech fluency of individuals who stutter with and without central auditory processing disorders. Methods The participants were twenty individuals with stuttering from 7 to 17 years old and were divided into two groups: Stuttering Group with Auditory Processing Disorders (SGAPD): 10 individuals with central auditory processing disorders, and Stuttering Group (SG): 10 individuals without central auditory processing disorders. Procedures were: fluency assessment with non-altered auditory feedback (NAF) and delayed auditory feedback (DAF), assessment of the stuttering severity and central auditory processing (CAP). Phono Tools software was used to cause a delay of 100 milliseconds in the auditory feedback. The "Wilcoxon Signal Post" test was used in the intragroup analysis and "Mann-Whitney" test in the intergroup analysis. Results The DAF caused a statistically significant reduction in SG: in the frequency score of stuttering-like disfluencies in the analysis of the Stuttering Severity Instrument, in the amount of blocks and repetitions of monosyllabic words, and in the frequency of stuttering-like disfluencies of duration. Delayed auditory feedback did not cause statistically significant effects on SGAPD fluency, individuals with stuttering with auditory processing disorders. Conclusion The effect of delayed auditory feedback in speech fluency of individuals who stutter was different in individuals of both groups, because there was an improvement in fluency only in individuals without auditory processing disorder.

Effect of Self-Postural Control with Visual Feedback in the Foot Pressures in the Subject with Forward Head Posture

PURPOSE: The purpose of this study was to investigate the effect of self-postural control on foot pressure in subjects with forward head posture. METHODS: Forty-two healthy adults were recruited in this study. Participants were divided into two groups: The forward-head postural (FHP) group (craniovertebral angle0.05). CONCLUSION: We suggest that cervical posture control using visual feedback has a positive effect on the distribution of foot pressure in subjects with forward head posture.

Postural balance in Alzheimer's disease patients undergoing sensory pitfalls

Despite consensus regarding the interference of cognitive processes on the human balance, the impact that different sensory stimuli have on the stabilometric measures remains unclear. Here, we investigated changes in the postural balance of individuals with Alzheimer's disease (AD) and in healthy controls undergoing different proprioceptive and somesthetic pitfalls. We included 17 subjects submitted to eight sensorimotor dynamics with differences in the support bases, contact surfaces, and visual clues. The measurements used to assess participants balance were as follows: position of the body in space, range of instability, area of the support base, and velocity of postural control. From a total of 56 cross-sectional analyses, 21.42% pointed out differences between groups. Longitudinal analyses showed that tasks with proprioceptive and somesthetic pitfalls similarly impact imbalance in both groups. The current results suggest that AD subjects and healthy controls had different patterns submitted to balance, but suffered similar interference when undergoing proprioceptive and somesthetic challenges

Comparison of different speech tasks among adults who stutter and adults who do not stutter

OBJECTIVES: In this study, we compared the performance of both fluent speakers and people who stutter in three different speaking situations: monologue speech, oral reading and choral reading. This study follows the assumption that the neuromotor control of speech can be influenced by external auditory stimuli in both speakers who stutter and speakers who do not stutter. METHOD: Seventeen adults who stutter and seventeen adults who do not stutter were assessed in three speaking tasks: monologue, oral reading (solo reading aloud) and choral reading (reading in unison with the evaluator). Speech fluency and rate were measured for each task. RESULTS: The participants who stuttered had a lower frequency of stuttering during choral reading than during monologue and oral reading. CONCLUSIONS: According to the dual premotor system model, choral speech enhanced fluency by providing external cues for the timing of each syllable compensating for deficient internal cues.