Biofeedback interventions for short term upper limb function following stroke: A systematic review with meta-analysis.

BACKGROUND: Biofeedback has been used by rehabilitation professionals in the treatment of poststroke function impairments. PURPOSE: Investigate the efficacy of any type of biofeedback intervention for the treatment of upper limb function in individuals following stroke. STUDY DESIGN: Systematic review of literature with meta-analysis. METHODS: Literature searches were conducted using MESH terms and text words in PubMed, Lilacs, Scielo, Scopus, PEDro, and Web of Science databases. The main outcome was improvement in upper limb's motor function and motor function in activities of daily living. We calculated the Mean Difference and Standardized Mean Difference for the assessment scales reported as primary outcome. The methodological quality of included studies was assessed using PEDro scale. The overall quality of the evidence was assessed using GRADE system. RESULTS: From 1360 articles identified, 16 were included in the review (09 in the meta-analysis). Three forest plots of hemiparesis and one of hemiplegia showed that biofeedback therapy associated with conventional therapy has a greater improvement in participants upper limb motor function when compared to isolated conventional therapy. Two forest plots of hemiparesis and one of hemiplegia showed no superiority in participants improvement for biofeedback associated with conventional therapy when compared to isolated conventional therapy. CONCLUSION: Biofeedback therapy associated with conventional therapy showed a small clinical effect when associated to conventional therapy and very low quality of evidence. Although further research with higher quality evidence is needed.

Prevalence of musculoskeletal disorders and risk factors in recyclable material waste pickers from the dump of the structural city in Brasília, Brazil.

Solid waste management is a global challenge impacting the lives of thousands of people, among them the recyclable materials waste pickers, through the separation and sale of these materials, make a living for themselves. These workers face unhealthy working conditions and are exposed to various occupational risks, which predispose the prevalence of musculoskeletal as chronic back problems. METHOD: Exploratory cross-sectional study with a semi-structured questionnaire to investigate the prevalence of back pain and related risk factors. RESULTS: 1.025 waste pickers were interviewed, and 970 records of chronic back pain were detected. Among them, 660 were women (68.04%), 310 were men (31.96%), the average age of 40.21 years; 597 were single (61.92%); 629 (64.84%) had over 11 years of work; 942 (97.11%) worked exclusively in the open dump, 899 (92.68%) with bags, 922 (95.05%) on dayshift. We found significant associations between gender (p < 0.001); age (p < 0.001); time at work (p < 0.022) and place at work (p < 0.001). After adjusting, there were higher prevalence of chronic back pain women (OR = 1.7), older age (OR = 2.64); working more than 11 years (OR = 1.09); and working on the open dump (OR = 2.8). CONCLUSION: The prevalence of subjective symptoms of musculoskeletal disorders was high. Women, over 36 years old, who worked more than 11 h a day in the open dump were more exposed to suffer from chronic back problems. The importance of urgently addressing the labor impacts related to solid waste management in developing countries to protect these workers and, especially, women involved in this work is emphasized.

Exercise interventions improve depression and anxiety in chronic kidney disease patients: a systematic review and meta-analysis.

PURPOSE: This systematic review examined the effects of exercise interventions on depression and anxiety in chronic kidney disease patients. METHODS: Electronic searches were conducted between August 2019 and February 2020 at PubMed, MEDLINE, Web of Science, EBSCO, Scopus, LILACS, EMBASE, Physiotherapy Evidence Database, and Cochrane Library databases. Original clinical trial studies that examined the effects of exercise on depression and anxiety in chronic kidney disease patients, stages 3-5, were included. A total of eight studies were included in the systematic review after applying the eligibility criteria, and six studies used for the meta-analysis procedures. RESULTS: The meta-analysis demonstrated statistical difference on depression in favour to exercise when compared to active control (SMD = - 0.66 [- 1.00, - 0.33], p < 0.0001) and passive control (MD = - 6.95 [- 8.76, - 5.14], p < 0.00001). Same results on anxiety demonstrated statistical difference between exercise and active control (SMD = - 0.78 [- 1.21, - 0.34], p = 0.0004). CONCLUSION: From the current limited number and quality of published studies, exercise seems to be more effective than sedentary control and other active control groups for improving depression and anxiety symptoms in chronic kidney disease patients.

Effectiveness of Circuit-Based Exercises on Gait Speed, Balance, and Functional Mobility in People Affected by Stroke: A Meta-Analysis.

BACKGROUND: Several interventions have been proposed to rehabilitate patients with neurologic dysfunctions due to stroke. However, the effectiveness of circuit-based exercises according to its actual definition, ie, an overall program to improve strength, stamina, balance or functioning, was not provided. OBJECTIVE: To examine the effectiveness of circuit-based exercise in the treatment of people affected by stroke. METHODS: A search through PubMed, Embase, Cochrane Library, and Physiotherapy Evidence Database databases was performed to identify controlled clinical trials without language or date restriction. The overall mean difference with 95% confidence interval was calculated for all outcomes. Two independent reviewers assessed the risk of bias. RESULTS: Eleven studies met the inclusion criteria, and 8 presented suitable data to perform a meta-analysis. Quantitative analysis showed that circuit-based exercise was more effective than conventional intervention on gait speed (mean difference of 0.11 m/s) and circuit-based exercise was not significantly more effective than conventional intervention on balance and functional mobility. CONCLUSION: Our results demonstrated that circuit-based exercise presents better effects on gait when compared with conventional intervention and that its effects on balance and functional mobility were not better than conventional interventions. LEVEL OF EVIDENCE: I.

Chronic low back pain in patients with systemic lupus erythematosus: prevalence and predictors of back muscle strength and its correlation with disability / Lombalgia crônica em pacientes com lúpus eritematoso sistêmico: prevalência e preditores da força muscular de extensão de tronco e sua correlação com a incapacidade

Abstract Objective: To determine the prevalence of Chronic Low Back Pain and predictors of Back Muscle Strength in patients with Systemic Lupus Erythematosus. Methods: Cross-sectional study. Ninety-six ambulatory patients with lupus were selected by non-probability sampling and interviewed and tested during medical consultation. The outcomes measurements were: Point prevalence of chronic low back pain, Oswestry Disability Index, Tampa Scale of Kinesiophobia, Fatigue Severity Scale and maximal voluntary isometric contractions of handgrip and of the back muscles. Correlation coefficient and multiple linear regression were used in statistical analysis. Results: Of the 96 individuals interviewed, 25 had chronic low back pain, indicating a point prevalence of 26% (92% women). The correlation between the Oswestry Index and maximal voluntary isometric contraction of the back muscles was r = −0.4, 95% CI [−0.68; −0.01] and between the maximal voluntary isometric contraction of handgrip and of the back muscles was r = 0.72, 95% CI [0.51; 0.88]. The regression model presented the highest value of R 2 being observed when maximal voluntary isometric contraction of the back muscles was tested with five independent variables (63%). In this model handgrip strength was the only predictive variable (β = 0.61, p = 0.001). Conclusions: The prevalence of chronic low back pain in individuals with systemic lupus erythematosus was 26%. The maximal voluntary isometric contraction of the back muscles was 63% predicted by five variables of interest, however, only the handgrip strength was a statistically significant predictive variable. The maximal voluntary isometric contraction of the back muscles presented a linear relation directly proportional to handgrip and inversely proportional to Oswestry Index i.e. stronger back muscles are associated with lower disability scores.

Resumo Objetivo: Determinar a prevalência de lombalgia crônica (LBC) e os preditores de força muscular nas costas (FMC) em pacientes com lúpus eritematoso sistêmico (LES). Métodos: Estudo transversal. Selecionaram-se 96 pacientes ambulatoriais com LES por amostragem não probabilística, entrevistados e testados durante consultas médicas. As medidas de desfecho foram: prevalência ocasional de LBC, Índice de Incapacidade de Oswestry, Escala Tampa para Cinesiofobia, Escala de Gravidade da Fadiga e contrações isométricas voluntárias máximas (CIVM) de preensão manual e dos músculos das costas. Usaram-se o coeficiente de correlação e a regressão linear múltipla na análise estatística. Resultados: Dos 96 indivíduos entrevistados, 25 apresentavam LBC, o que indicou uma prevalência circunstancial de 26% (92% mulheres). A correlação entre o Índice de Incapacidade de Oswestry e a contração isométrica voluntária máxima dos músculos das costas foi de r = -0,4, IC 95% [-0,68; -0,01] e entre a CIVM de preensão manual e dos músculos das costas foi de r = 0,72, IC 95% [0,51; 0,88]. O modelo de regressão apresentou o maior valor de R2 observado quando a CIVM dos músculos das costas foi testada com cinco variáveis independentes (63%). Nesse modelo, a força de preensão manual foi a única variável preditiva (ß = 0,61, p = 0,001). Conclusões: A prevalência de LBC em indivíduos com LES foi de 26%. A CIVM dos músculos das costas foi 63% prevista por cinco variáveis de interesse. No entanto, apenas a força de preensão manual foi uma variável preditiva estatisticamente significativa. A CIVM dos músculos das costas apresentou uma relação linear diretamente proporcional à força de preensão manual e inversamente proporcional ao Índice de Incapacidade de Oswestry (ou seja, músculos das costas mais fortes estão associados a menores pontuações de incapacidade).

Chronic low back pain in patients with systemic lupus erythematosus: prevalence and predictors of back muscle strength and its correlation with disability.

OBJECTIVE: To determine the prevalence of Chronic Low Back Pain and predictors of Back Muscle Strength in patients with Systemic Lupus Erythematosus. METHODS: Cross-sectional study. Ninety-six ambulatory patients with lupus were selected by non-probability sampling and interviewed and tested during medical consultation. The outcomes measurements were: Point prevalence of chronic low back pain, Oswestry Disability Index, Tampa Scale of Kinesiophobia, Fatigue Severity Scale and maximal voluntary isometric contractions of handgrip and of the back muscles. Correlation coefficient and multiple linear regression were used in statistical analysis. RESULTS: Of the 96 individuals interviewed, 25 had chronic low back pain, indicating a point prevalence of 26% (92% women). The correlation between the Oswestry Index and maximal voluntary isometric contraction of the back muscles was r=-0.4, 95% CI [-0.68; -0.01] and between the maximal voluntary isometric contraction of handgrip and of the back muscles was r=0.72, 95% CI [0.51; 0.88]. The regression model presented the highest value of R2 being observed when maximal voluntary isometric contraction of the back muscles was tested with five independent variables (63%). In this model handgrip strength was the only predictive variable (ß=0.61, p=0.001). CONCLUSIONS: The prevalence of chronic low back pain in individuals with systemic lupus erythematosus was 26%. The maximal voluntary isometric contraction of the back muscles was 63% predicted by five variables of interest, however, only the handgrip strength was a statistically significant predictive variable. The maximal voluntary isometric contraction of the back muscles presented a linear relation directly proportional to handgrip and inversely proportional to Oswestry Index i.e. stronger back muscles are associated with lower disability scores.

Effects of short term elastic resistance training on muscle mass and strength in untrained older adults: a randomized clinical trial.

BACKGROUND: The current recommendations on resistance training involving older adults have reported an improvement of body composition variables. Despite this, there is a lack of knowledge on how elastic resistance training (ERT) affects the muscle mass in older adults population. The purpose of this study was to determine the effects of a short-term ERT on muscle mass of health and untrained older adults. METHODS: Forty older adults were randomized into two groups of 20 individuals each: Control Group (CG = 66.2 ± 6.6 years) and Training Group (TG = 69.1 ± 6.3 years). TG underwent an ERT twice a week during 8 weeks and control group did not receive any specific intervention. The primary outcome was the upper and lower limbs muscle mass, measured by Dual-energy x-ray absorptiometry. The secondary outcomes were knee isokinetic peak torque (PT) at 60°/s and 120°/s speeds and isometric handgrip strength. A 2×2 mixed model (group [TG and CG] × time [pre and post]) analysis of variance (ANOVA) was applied to determine the effect on primary and secondary outcomes. RESULTS: The results of the ANOVA showed no significant effects in group x time interaction for (1) upper limbs fat free mass (F [1.38] = 1.80, p = 0.19, effect size [ES] = 0.1) and for (2) lower limbs fat free mass (F [1.38] = 0.03, p = 0.88, ES = 0.02). Regarding muscle strength, the ANOVA showed no significant effects in group x time interaction for (3) PT at 60°/s (F [1.38] = 0.33, p = 0.56, ES = 3.0), for (4) PT at 120°/s (F [1.38] = 0.80, p = 0.38, ES = 4.1) and for handgrip strength (F [1.38] = 0.65, p = 0.42-value, ES = 0.9). Analysis of PT in TG showed a significant change of 4.5%, but only at 120°/s (p = 0.01) when comparing pre and post-training (time interaction). CONCLUSIONS: Eight weeks of ERT did not show significant changes in muscle mass and strength of untrained older adults. TRIAL REGISTRATION: NCT02253615 (09/25/14).

Immediate changes in electroencephalography activity in individuals with nonspecific chronic low back pain after cranial osteopathic manipulative treatment: study protocol of a randomized, controlled crossover trial.

BACKGROUND: Osteopathic medicine is based on a diagnostic and therapeutic system to treat tissue mobility/ motility dysfunctions in general, using different approaches (depending on the target tissue) known as osteopathic manipulative treatment. Among the available techniques those ones addressed to the cranial field are the most questioned because of the lack of scientific evidence; but the compression of the 4th ventricle technique has been largely studied in clinical trials. Studies have shown that the technique may affect both central and autonomous nervous system, modulating some reflexes (Traube-Hering baro signal), and modifying brain cortex electrical activity through central sensitization in subjects with chronic low back pain. Thus, investigators hypothesize that the compression of the 4th ventricle may modulate peak alpha frequency (eletroencephalographic assessment) and promote physical relaxation in subjects in vigil. METHODS/DESIGN: A randomized, controlled crossover trial with blinded assessor was designed to test the hypothesis. A total of 81 participants will be assigned to three treatment conditions, with seven days of washout: (I) compression of the 4th ventricle; (II) sham compression of the fourth ventricle; (III) control (no intervention). The (I) power amplitude and the (II) frequencies of the dominant peak in the alpha band will be the primary outcome measures of the study. All participants will be recruited at the Outpatient Rehabilitation Service of the University Hospital of Brasília-University of Brasília. All the electroencephalographic exams will be conducted by a blinded assessor. DISCUSSION: The investigators hypothesize that patients with chronic low back pain submitted to the technique would have the peak alpha frequency modulated and, thus, would experience physical relaxation. TRIAL REGISTRATION: NCT02111382.

Satisfação, Percepção de Aprendizagem e Desempenho em Vídeo aula e Aula Expositiva / Satisfaction, Perceived Learning and Performance in Video Lesson andLecture

Educadores têm se perguntado sobre estratégias adequadas para interagir com uma geração de alunos que tem acesso a modernos meios de comunicação liderados pela Internet. Este estudo comparou dois grupos de alunos de graduação,um exposto a uma aula expositiva (AE, n=81) e o outro a uma vídeo-aula (VA, n=60), avaliando o desempenho (DES) em pré e pós-testes, satisfação(SAT) e percepção de aprendizagem (PA). Foram analisadas correlações entre SAT e PA e entre ambase o DES. Houve melhora de DES (teste de Wilcoxon)de ambos os grupos, sem diferença entre eles (testede Mann-Whitney); os alunos ficaram satisfeitos e expressaram boa percepção de aprendizagem(teste de Qui-Quadrado); houve correlação entre SAT e PA, e as correlações entre SAT e DES e entre PA e DES foram significativas, porém baixas (teste de correlação de Spearman). Conclui-se que VAe AE são adequadas e promovem aprendizado dos alunos que se sentiram satisfeitos e com a percepção de que aprenderam o conteúdo. Sugere seque as metodologias possam ser utilizadas pelo professor de forma complementar, ressaltando a importância da construção de diálogos que sintonizem metodologias clássicas de ensino, como a aula expositiva, com novas tecnologias, como a vídeo-aula, que possam ser utilizadas com fins educacionais

Satisfação, Percepção de Aprendizagem e Desempenho em Vídeo aula e Aula Expositiva / Satisfaction, Perceived Learning and Performance in Video Lesson andLecture

Educadores têm se perguntado sobre estratégias adequadas para interagir com uma geração de alunos que tem acesso a modernos meios de comunicação liderados pela Internet. Este estudo comparou dois grupos de alunos de graduação,um exposto a uma aula expositiva (AE, n=81) e o outro a uma vídeo-aula (VA, n=60), avaliando o desempenho (DES) em pré e pós-testes, satisfação(SAT) e percepção de aprendizagem (PA). Foram analisadas correlações entre SAT e PA e entre ambase o DES. Houve melhora de DES (teste de Wilcoxon)de ambos os grupos, sem diferença entre eles (testede Mann-Whitney); os alunos ficaram satisfeitos e expressaram boa percepção de aprendizagem(teste de Qui-Quadrado); houve correlação entre SAT e PA, e as correlações entre SAT e DES e entre PA e DES foram significativas, porém baixas (teste de correlação de Spearman). Conclui-se que VAe AE são adequadas e promovem aprendizado dos alunos que se sentiram satisfeitos e com a percepção de que aprenderam o conteúdo. Sugere seque as metodologias possam ser utilizadas pelo professor de forma complementar, ressaltando a importância da construção de diálogos que sintonizem metodologias clássicas de ensino, como a aula expositiva, com novas tecnologias, como a vídeo-aula, que possam ser utilizadas com fins educacionais.

Educators have been wondering about the mostappropriate strategies to interact with a generationof students who has access to modern means ofcommunication, led by the Internet. This studycompared two groups of undergraduate students,one exposed to a lecture (L, n=81) and the otherto a video lesson (VL, n=60) through performanceevaluation (PER) in pre- and post-tests, satisfaction(SAT) and perceived learning (PL). The correlationsbetween SAT and PL and between both and PER wereanalyzed. The data showed an improvement of PER(Wilcoxon test) in both groups, without differencebetween them (Mann-Whitney test); both groups ofstudents were satisfied and perceived good sense oflearning (Chi-Square test); there was a correlationbetween SAT and PL and the correlation between SATand DES and between DES and PA were significant,but low (Spearman test). In conclusion, L and VL areappropriate and promote learning and the studentsfelt satisfied and with the perception that theylearned the content of the subject. It is suggestedthat both methodologies can be used by the teacheras a reinforcement and in a complementary manner,emphasizing the importance of constructing dialogicbridges able to match classical teaching methodssuch as lecturing with new technologies, as the videolesson, that can be used for educational purposes.

Emergência da neuroeducação: a hora e a vez da neurociência para agregar valor à pesquisa educacional / Neuroeducation emergence: the time and place for neuroscience to add value to educational research

O artigo apresenta informações bibliográficas a respeito de um novo paradigma para a pesquisa educacional, o qual prevê a integração dos achados de pesquisas das Neurociências às necessidades de identificação das melhores formas de ensinar, para potencializar os resultados do aprendizado. O fundamento desta nova área interdisciplinar de estudo é prover caráter científico à pesquisa educacional, estabelecendo um framework teórico e metodológico para que possam ser testadas as melhores práticas pedagógicas. Além disso, contextualiza ideias e produções, com este enfoque, realizadas nos últimos anos, por um grupo de pesquisadores ligados à Universidade Federal do Rio Grande do Sul e outras instituições da região e sugere que esta nova área possa também balizar o desenvolvimento e a pesquisa sobre o uso de produtos educacionais, em especial aqueles que se utilizam das tecnologias computadorizadas, como a multimídia, os vídeos e os projetos integrados de múltiplos recursos e funções.

Emergência da neuroeducação: a hora e a vez da neurociência para agregar valor à pesquisa educacional / Neuroeducation emergence: the time and place for neuroscience to add value to educational research

O artigo apresenta informações bibliográficas a respeito de um novo paradigma para a pesquisa educacional, o qual prevê a integração dos achados de pesquisas das Neurociências às necessidades de identificação das melhores formas de ensinar, para potencializar os resultados do aprendizado. O fundamento desta nova área interdisciplinar de estudo é prover caráter científico à pesquisa educacional, estabelecendo um framework teórico e metodológico para que possam ser testadas as melhores práticas pedagógicas. Além disso, contextualiza ideias e produções, com este enfoque, realizadas nos últimos anos, por um grupo de pesquisadores ligados à Universidade Federal do Rio Grande do Sul e outras instituições da região e sugere que esta nova área possa também balizar o desenvolvimento e a pesquisa sobre o uso de produtos educacionais, em especial aqueles que se utilizam das tecnologias computadorizadas, como a multimídia, os vídeos e os projetos integrados de múltiplos recursos e funções.

Observação das evidências cognitivas de aprendizagem motora no desempenho de jovens violonistas monitoradas por eletroencefalograma: um estudo piloto / Observation cognitive evidences of the motor learning in the performance of young guitarists monitored by electroencephalogram: a pilot study

O artigo apresenta evidências cognitivas de aprendizagem motora por pesquisa com EEG cujo protocolo e tarefa buscou motivar dois violonistas a treinar e aprender a tocar uma seqüência de notas oferecida em partitura e áudio. Objetivou-se aumentar a demanda cortical para atenção seletiva, processamento, evocação de memórias e ampliação de representações mentais. Sabe-se que a aprendizagem é construída endogenamente, por ação cognitiva dos indivíduos sobre novas informações assimiladas e acomodadas em repertório prévio. Reorganizando-se, dá significância às novas informações e cria conhecimento e estes estados cognitivos relacionados com aprendizado motor exigem vigília, atenção, abstração e programação, o que causa mudanças nos sinais biológicos elétricos captados por EEG. Monitoraram-se sinais de EEG durante leitura, audição e prática da tarefa e calculou-se as medianas das freqüências (MFeeg) e médias aritméticas simples de ondas eletroencefalográficas em 3.000 e 60.000 milissegundos. O modelo estatístico foi ANOVA, Teste Bonferroni e Teste T para amostras pareadas (p<0,05); programas Excell 2003 e SPSS 14.0. A pesquisa mostrou a existência de específicas alterações de padrões de EEG, da aparente inatividade da pré-execução da tarefa à prática e memorização da partitura e desempenho motor.(AU)

The article presents cognitive evidences of motor learning with electroencephalogram (EEG) whose protocol and task looked to cause two guitarists training and learning to touch a sequence of notes offered in score and sound. The demand aimed to increase cortical for selective attention, processing, evocation of memories and of mental representations. The motor learning is known when built the action with new assimilated and accommodated in formations - it creates knowledge. These cognitive states connected with driving demand wakefulness, attention, abstraction and planning and changes the biological electric signs caught by EEG. Signs of EEG were monitored during reading, audition and practice of the task and there were calculated the medium ones of the frequencies (MFeeg) and arithmetical simple averages of waves electroencephalographic in 3.000 and 60.000 milliseconds. The statistical model was ANOVA, Test Bonferroni and Test T for samples gauged tuns Test Bonferroni and Test T for gauged tuns samples (p <0,05); programs Excell 2003 and SPSS 14.0. The inquiry showed the existence of specific alterations of standards of EEG, of the apparent inactivity of the daily pay-execution of the task to the practice and memorization of the score and driving performance. (AU)

Metodologia para observação e quantificação de sinais de EEG relativos a evidências cognitivas de aprendizagem motora / Methodology to observation and quantification of EEG signs related to cognitive evidences of motor learning

Este artigo apresenta uma revisão sobre questões cognitivas – de processamento de informações - envolvidas na aprendizagem motora, para consolidar pesquisa empírica a esse respeito. Propõe metodologia de observação e quantificação de sinais bioelétricos neurofisiológicos – de EEG – para identificação das modificações que ocorrem durante o processo de aquisição de tarefa cognitivo-motora. Descreve experimento-piloto em projeto de tese de doutorado na área das Ciências do Movimento, que monitora, quantifica e interpreta a alteração de sinais de base em relação a vários momentos da tarefa: prática deliberada de partitura musical por violonistas.