Equilíbrio postural e fatores associados ao risco de quedas em idosos com diabetes mellitus tipo 2 / Postural balance and associated factors with the fall risk assessed in older adults with type 2 diabetes mellitus

Resumo Objetivo Identificar os fatores clínico-funcionais associados ao risco de quedas, avaliado pelo Mini-BESTest, em idosos com diabetes mellitus tipo 2 (DM2). Método Trata-se de um estudo transversal. Um total de 145 idosos com idade =60 anos foram avaliados por meio das variáveis sociodemográficas (sexo, faixa etária, estado civil, nível de educação e percepção geral da saúde, audição e visão) Mini-BESTest, Mini-Mental State Examination (MMSE), Escala de Depressão Geriátrica (GDS-15) e o teste Timed Up and Go (TUG) (dupla tarefa). Foi utilizado um modelo de regressão logística múltipla. Resultados O domínio de orientação sensorial apresentou a pontuação média mais elevada, seguido pelos domínios estabilidade na marcha, ajustes posturais antecipatórios e respostas posturais. Os fatores associados ao risco de quedas em idosos foram: percepção visual ruim/muito ruim OR 3.40 (1,50-7,72); presença de doenças respiratórias OR 8.00 (1,32-48,46); sensação de tontura OR 2.53 (1,10-5,80); e tempo do teste Timed Up and Go (TUG) (dupla tarefa) igual ou superior a 13,5 segundos OR 3.31 (1,03-10,64). Conclusão Os idosos deste estudo apresentaram um equilíbrio postural comprometido, principalmente no domínio das respostas posturais. O conhecimento dos fatores associados ao risco de quedas em idosos com DM2 permite uma orientação mais eficaz na avaliação, prevenção e intervenção, visando minimizar a ocorrência de quedas e preservar ou otimizar o equilíbrio postural. Diversos fatores influenciaram esse resultado, tais como sobrepeso, baixa atividade física e nível educacional, várias comorbidades, polifarmácia, diagnóstico de DM2 por mais de dez anos, percepção negativa da saúde geral e da visão, e sintomas depressivos.

Abstract Objective Identify clinical-functional factors associated to the risk of falls, assessed by Mini-BESTest in older adults with type 2 diabetes mellitus (T2DM). Method This cross-sectional study. A total of 145 older adults aged ≥60 years were evaluated through sociodemographic variables (sex, age group, married, education level, general health status hearing and vision), Mini-BESTest, Mini-Mental State Examination (MMSE), Geriatric Depression Scale (GDS-15) and dual-task Timed Up and Go Test (TUG) Multiple logistic regression model was used. Results The sensory orientation domain presented the highest average score, followed by the gait stability, anticipatory postural adjustments and postural responses domains. Factors associated to the risk of falls in older adults are: poor/very poor visual perception OR 3.40 (1.50-7.72); have respiratory diseases OR 8.00 (1.32-48.46); feeling dizzy OR 2.53 (1.10-5.80); and TUGT (dual task) time equal to or greater than 13.5 seconds OR 3.31 (1.03-10.64). Conclusion Older adults in this study presented impaired postural balance, mainly in the postural responses domain. The knowledge of the factors associated with the risk of falls in older adults with T2DM allows for better guidance in prevention, assessment and intervention, in order to minimize the occurrence of falls and maintain or optimize postural balance. Several factors influenced this outcome, such as overweight, low physical activity and education, several comorbidities, polypharmacy, T2DM diagnosis for more than ten years, negative perception of general health and vision, and depressive symptoms.

A gait signal acquisition and parameter characterization method based on foot pressure detection combined with Azure Kinect system / 生物医学工程学杂志

The gait acquisition system can be used for gait analysis. The traditional wearable gait acquisition system will lead to large errors in gait parameters due to different wearing positions of sensors. The gait acquisition system based on marker method is expensive and needs to be used by combining with the force measurement system under the guidance of rehabilitation doctors. Due to the complex operation, it is inconvenient for clinical application. In this paper, a gait signal acquisition system that combines foot pressure detection and Azure Kinect system is designed. Fifteen subjects are organized to participate in gait test, and relevant data are collected. The calculation method of gait spatiotemporal parameters and joint angle parameters is proposed, and the consistency analysis and error analysis of the gait parameters of proposed system and camera marking method are carried out. The results show that the parameters obtained by the two systems have good consistency (Pearson correlation coefficient r ≥ 0.9, P < 0.05) and have small error (root mean square error of gait parameters is less than 0.1, root mean square error of joint angle parameters is less than 6). In conclusion, the gait acquisition system and its parameter extraction method proposed in this paper can provide reliable data acquisition results as a theoretical basis for gait feature analysis in clinical medicine.

A two-dimensional video based quantification method and clinical application research of motion disorders / 生物医学工程学杂志

The increasing prevalence of the aging population, and inadequate and uneven distribution of medical resources, have led to a growing demand for telemedicine services. Gait disturbance is a primary symptom of neurological disorders such as Parkinson's disease (PD). This study proposed a novel approach for the quantitative assessment and analysis of gait disturbance from two-dimensional (2D) videos captured using smartphones. The approach used a convolutional pose machine to extract human body joints and a gait phase segmentation algorithm based on node motion characteristics to identify the gait phase. Moreover, it extracted features of the upper and lower limbs. A height ratio-based spatial feature extraction method was proposed that effectively captures spatial information. The proposed method underwent validation via error analysis, correction compensation, and accuracy verification using the motion capture system. Specifically, the proposed method achieved an extracted step length error of less than 3 cm. The proposed method underwent clinical validation, recruiting 64 patients with Parkinson's disease and 46 healthy controls of the same age group. Various gait indicators were statistically analyzed using three classic classification methods, with the random forest method achieving a classification accuracy of 91%. This method provides an objective, convenient, and intelligent solution for telemedicine focused on movement disorders in neurological diseases.

Musculoskeletal multibody dynamics investigation for the different medial-lateral installation position of the femoral component in unicompartmental knee arthroplasty / 生物医学工程学杂志

The surgical installation accuracy of the components in unicompartmental knee arthroplasty (UKA) is an important factor affecting the joint function and the implant life. Taking the ratio of the medial-lateral position of the femoral component relative to the tibial insert (a/A) as a parameter, and considering nine installation conditions of the femoral component, this study established the musculoskeletal multibody dynamics models of UKA to simulate the patients' walking gait, and investigated the influences of the medial-lateral installation positions of the femoral component in UKA on the contact force, joint motion and ligament force of the knee joint. The results showed that, with the increase of a/A ratio, the medial contact force of the UKA implant was decreased and the lateral contact force of the cartilage was increased; the varus rotation, external rotation and posterior translation of the knee joint were increased; and the anterior cruciate ligament force, posterior cruciate ligament force and medial collateral ligament force were decreased. The medial-lateral installation positions of the femoral component in UKA had little effect on knee flexion-extension movement and lateral collateral ligament force. When the a/A ratio was less than or equalled to 0.375, the femoral component collided with the tibia. In order to prevent the overload on the medial implant and lateral cartilage, the excessive ligament force, and the collision between the femoral component and the tibia, it is suggested that the a/A ratio should be controlled within the range of 0.427-0.688 when the femoral component is installed in UKA. This study provides a reference for the accurate installation of the femoral component in UKA.

Effects of electroacupuncture on gait and proliferation and differentiation of muscle satellite cell in rats with acute blunt trauma of gastrocnemius muscle / 中国针灸

OBJECTIVE@#To observe the effects of electroacupuncture on threshold of pain, gait, proliferation and differentiation of muscle satellite cell in rats with acute blunt trauma of gastrocnemius muscle, and to explore the possible mechanism of electroacupuncture in promoting the repair of acute injury of skeletal muscle.@*METHODS@#A total of 48 SD rats were randomly divided into a blank group (6 rats), a model group (24 rats) and an electroacupuncture group (18 rats). In the model group and the electroacupuncture group, the model of acute blunt trauma of gastrocnemius muscle was established by self-made impactor. In the electroacupuncture group, electroacupuncture was applied at "Chengshan" (BL 57) and "Yanglingquan" (GB 34) on the right side, with disperse-dense wave, in frequency of 2 Hz/100 Hz, once a day, 30 min each time. Electroacupuncture intervention was performed for 3, 7 and 14 days according to the sampling time. On the 1st, 3rd, 7th and 14th days after modeling, the mechanical withdrawal pain threshold of hindfoot was detected by Von Frey method; the standing time and the maximum contact area of the right hindfoot were recorded by Cat Walk XTTM animal gait analysis instrument; the morphology of the right gastrocnemius muscle and the number of inflammatory cells were observed by HE staining; the positive expression of paired box gene 7 (Pax7) and myogenic differentiation (MyoD) of the right gastrocnemius muscle was detected by immunofluorescence.@*RESULTS@#After modeling, the muscle fiber rupture and massive infiltration of red blood cells and inflammatory cells were observed in the right gastrocnemius muscle; after electroacupuncture intervention, the morphology of muscle fiber was intact and the infiltration of inflammatory cells was improved. Compared with the blank group, in the model group, the differences of mechanical withdrawal pain threshold between the left and right foot were increased (P<0.05), the standing time was shortened and the maximum contact area of the right hindfoot was decreased (P<0.05), the number of inflammatory cells and the positive expression of Pax7 and MyoD of the right gastrocnemius muscle were increased (P<0.05) on the 1st, 3rd, 7th and 14th days after modeling. Compared with the model group, in the electroacupuncture group, the differences of mechanical withdrawal pain threshold were decreased (P<0.05), the standing time was prolonged (P<0.05), the number of inflammatory cells of right gastrocnemius muscle was decreased (P<0.05) on the 7th and 14th days after modeling; the maximum contact area of the right hindfoot was increased (P<0.05), the positive expression of MyoD of the right gastrocnemius muscle was increased (P<0.05) on the 3rd, 7th and 14th days after modeling; the positive expression of Pax7 of the right gastrocnemius muscle was increased (P<0.05) on the 3rd day after modeling.@*CONCLUSION@#Electroacupuncture can effectively improve the pain threshold and gait in rats with acute blunt trauma of gastrocnemius muscle, and promote the repair of skeletal muscle injury, the mechanism may be related to the up-regulation of Pax7 and MyoD, so as to promoting the proliferation and differentiation of muscle satellite cell.

Analysis of muscle synergy and muscle functional network at different walking speeds based on surface electromyographic signal / 生物医学工程学杂志

An in-depth understanding of the mechanism of lower extremity muscle coordination during walking is the key to improving the efficacy of gait rehabilitation in patients with neuromuscular dysfunction. This paper investigates the effect of changes in walking speed on lower extremity muscle synergy patterns and muscle functional networks. Eight healthy subjects were recruited to perform walking tasks on a treadmill at three different speeds, and the surface electromyographic signals (sEMG) of eight muscles of the right lower limb were collected synchronously. The non-negative matrix factorization (NNMF) method was used to extract muscle synergy patterns, the mutual information (MI) method was used to construct the alpha frequency band (8-13 Hz), beta frequency band (14-30 Hz) and gamma frequency band (31-60 Hz) muscle functional network, and complex network analysis methods were introduced to quantify the differences between different networks. Muscle synergy analysis extracted 5 muscle synergy patterns, and changes in walking speed did not change the number of muscle synergy, but resulted in changes in muscle weights. Muscle network analysis found that at the same speed, high-frequency bands have lower global efficiency and clustering coefficients. As walking speed increased, the strength of connections between local muscles also increased. The results show that there are different muscle synergy patterns and muscle function networks in different walking speeds. This study provides a new perspective for exploring the mechanism of muscle coordination at different walking speeds, and is expected to provide theoretical support for the evaluation of gait function in patients with neuromuscular dysfunction.

Design and analysis of shoulder type exoskeleton stretcher for individual soldier / 生物医学工程学杂志

For the transportation process of rescuing wounded personnel on naval vessels, a new type of shoulder type exoskeleton stretcher for individual soldier was designed in this paper. The three-dimensional model of the shoulder type exoskeleton stretcher for individual soldier was constructed using three dimensional modeling software. Finite element analysis technique was employed to conduct statics simulation, modal analysis, and transient dynamics analysis on the designed exoskeleton stretcher. The results show that the maximum stress of the exoskeleton stretcher for walking on flat ground is 265.55 MPa, which is lower than the allowable strength of the fabrication material. Furthermore, the overall deformation of the structure is small. Modal analysis reveals that the natural frequency range of the exoskeleton stretcher under different gait conditions is 1.96 Hz to 28.70 Hz, which differs significantly from the swing frequency of 1 Hz during walking. This indicates that the designed structure can effectively avoid resonance. The transient dynamics analysis results show that the maximum deformation and stress of exoskeleton stretcher remain within the safety range, which meets the expected performance requirements. In summary, the shoulder type exoskeleton stretcher for individual soldier designed in this study can solve the problem of requiring more than 2 people to carry for the existing stretcher, especially suitable for narrow spaces of naval vessels. The research results of this paper can provide a new solution for the rescue of wounded personnel on naval vessels.

Research on the Progress of Applying Virtual Reality Technology in Preventing Falls in the Elderly / 中国医疗器械杂志

The primary cause of injury and death in the elderly has been reflected in fall the elderly, so the application of reasonable and effective prevention strategies has great significance in reducing the risk of fall in the elderly. The research progress of virtual reality technology applied in preventing fall in the elderly at home and abroad over the years was systematically reviewed in this study. The mechanism of the technology in preventing fall in the elderly was mainly elaborated from five aspects of improving balance ability, gait disturbance, cognitive impairment, muscle strength and the fear psychology of falling. The purpose of this thesis is to broaden the research ideas of medical personnel on the prevention of fall of the elderly, provide more effective clinical practice plans, reduce the occurrence of fall, and guarantee the safety of the elderly.

Structure Design of Hip Joint Parallel Rehabilitation Exoskeleton / 中国医疗器械杂志

At present, most of the research on hip exoskeleton robots adopts the method of decoupling analysis of hip joint motion, decoupling the ball pair motion of hip joint into rotational motion on sagittal plane, coronal plane and cross section, and designing it into series mechanism. Aiming at the problems of error accumulation and man-machine coupling in series mechanism, a parallel hip rehabilitation exoskeleton structure is proposed based on the bionic analysis of human hip joint. The structure model is established and the kinematics analysis is carried out. Through the OpenSim software, the curve of hip flexion and extension, adduction and abduction angle in a gait cycle is obtained. The inverse solution of the structure is obtained by the D-H coordinate system method. The gait data points are selected and compared with the inverse solution obtained by ADAMS software simulation. The results show that the inverse solution expression is correct. The parallel hip exoskeleton structure can meet the requirements of the rotation angle of the hip joint of the human body, and can basically achieve the movement of the hip joint, which is helpful to improve the human-computer interaction performance of the exoskeleton.

Effect of torso training on unstable surface on lower limb motor function in patients with incomplete spinal cord injury / 浙江大学学报·医学版

OBJECTIVES@#To investigate the effect of torso training on unstable surface on lower limb motor function in patients with incomplete spinal cord injury.@*METHODS@#A total of 80 patients with incomplete spinal cord injury caused by thoracolumbar fracture admitted in Ningbo Yinzhou No.2 Hospital from April 2020 to December 2021 were randomly divided into control group and study group, with 40 cases in each group. In addition to routine training, the control group received torso training on stable surface and the study group received torso training on unstable surface. The gait, lower limb muscle strength, balance function, lower limb function, mobility and nerve function of the two groups were compared.@*RESULTS@#After treatment, the stride length, stride frequency and comfortable walking speed improved in the two groups (all P<0.05), and the improvements in study group were more significant (all P<0.05). The muscle strength of quadriceps femoris, gluteus maximus, hamstring, anterior tibialis and gastrocnemius were improved in the two groups (all P<0.05), and the improvements in study group were more significant (all P<0.05); the total trajectories of static eye opening and static eye closing gravity center movement in the two groups were significantly shorter (all P<0.05), and the improvements in the study group were more significant (all P<0.05). The dynamic stability limit range and the American Spinal Injury Association (ASIA) lower extremity motor score, Berg balance scale, modified Barthel index scale in the two groups were significantly higher (all P<0.05), and these scores in study group were significantly higher than those in the control group (all P<0.05). Both groups showed a significant improvement in ASIA grade (all P<0.05), and the improvement in the study group was significantly better (P<0.05).@*CONCLUSIONS@#Torso training on unstable surface can effectively improve the gait and lower limb muscle strength of patients with incomplete spinal cord injury and improve the lower limb motor function.

Brazilian Version of the Myelomeningocele Functional Classification (MMFC): Translation, Cultural Adaptation, and Psychometric Properties / Versão brasileira da classificação funcional de mielomeningocele (MMFC): Tradução, adaptação cultural e propriedades psicométricas

Abstract Objective: Perform the translation and cultural adaptation of the Myelomeningocele Functional Classification (MMFC) into Portuguese (Brazil) and study its psychometric properties. Method: Validation study with translation, cultural adaptation and evaluation of psychometric properties: reliability, test-retest and convergent validity. Sample of 20 individuals with myelomeningocele with a median age of 10 (5 - 24.25) years, with a minimum of 3 and a maximum of 66 years. Reliability was determined by intra and interobserver agreement, using the results of the Intra-class Correlation Coefficient (ICC) and Confidence Interval 95% (IC- 95%). Convergent validity was performed using the Sharrard, Hoffer, Pediatric Evaluation of Disability Inventory (PEDI) and Functional Mobility Scale (FMS) classifications, and The Spearman Correlation Test was calculated. Results: Intra (ICC range: 0.900-1.0) and interobserver (ICC: 0.936; IC- 95%: 0.839-0.975) reliability showed excellent levels of ICC. Convergent validity showed very strong correlations with FMS-5 (r = 0.94, p = 0.00) and FMS-50 (r = 0.94, p = 0.00); strong correlations with FMS-500 (r = 0.87, p = 0.00), Sharrard (r = 0.76, p = 0.00), Hoffer (r = 0.83, p = 0.00), PEDI Functional Skills: Mobility (r = 0.84, p = 0.00) and PEDI Caregiver Assistance: Mobility (r = 0.77, p = 0.00); and weak correlations with self care domain of PEDI (r = 0.46, p = 0,04). The test-retest showed ICC = 1.00. Conclusions: This study presents the psychometric properties of the MMFC, in addition to its translation and cultural adaptation into Portuguese, the native language of the author of the classification. MMFC demonstrates correlation with previously used myelomeningocele classifications. MMFC demonstrated good results in the psychometric properties evaluated. Thus, the MMFC seems adequate and applicable to individuals with myelomeningocele and valid for the Brazilian population.

Resumo Objetivo: Realizar a tradução e adaptação cultural da Classificação Funcional da Mielomeningocele (MMFC) para o português (Brasil) e estudar suas propriedades psicométricas. Método: Estudo de validação com tradução, adaptação cultural e avaliação das propriedades psicométricas: confiabilidade, teste-reteste e validade convergente. Amostra de 20 indivíduos com mielomeningocele e idade mediana de 10 (5 a 24,25) anos, com mínimo de 3 e máximo de 66 anos. A confiabilidade foi determinada pela concordância intra e interobservador, utilizando os resultados do coeficiente de correlação intraclasse (ICC) e o intervalo de confiança de 95% (IC- 95%). A validade convergente foi realizada por meio das classificações de Sharrard, Hoffer, Inventário de Avaliação Pediátrica de Incapacidade (Pediatric Evaluation of Disability Inventory [PEDI]) e Escala de Mobilidade Funcional (Functional Mobility Scale [FMS]). Além disso, o teste de correlação de Spearman foi realizado. Resultados: A confiabilidade intraobservador (ICC: 0,900-1,0) e interobservador (ICC: 0,936; IC - 95%: 0,839-0,975) apresentou excelentes níveis de ICC. A validade convergente mostrou correlações muito fortes com FMS-5 (r = 0,94, p = 0,00) e FMS-50 (r = 0,94, p = 0,00); correlações fortes com FMS-500 (r = 0,87, p = 0,00), Sharrard (r = 0,76, p = 0,00), Hoffer (r = 0,83, p = 0,00) e Habilidades Funcionais: Mobilidade (PEDI) (r = 0,84, p= 0,00) e Assistência do Cuidador: Mobilidade (PEDI) (r = 0,77, p = 0,00); e fracas com o domínio autocuidado de PEDI (r = 0,46, p = 0,04). O teste-reteste revelou que ICC =1,00. Conclusões: Este estudo apresenta as propriedades psicométricas da MMFC, além de sua tradução e adaptação cultural para o português, língua nativa do autor da classificação. A MMFC demonstra correlação com classificações de mielomeningocele anteriormente utilizada. A MMFC teve bons resultados nas propriedades psicométricas avaliadas. Assim, a MMFC parece adequada e aplicável a indivíduos com mielomeningocele e é válida para a população brasileira.

Combined Aerobic and Strength Training Improves Dynamic Stability and can Prevent against Static Stability Decline in Postmenopausal Women: A Randomized Clinical Trial / O treinamento de força e aeróbio combinado melhora a estabilidade dinâmica e pode prevenir contra o declínio da estabilidade estática em mulheres na pósmenopausa: um ensaio clínico randomizado

Abstract Objective To analyze the effect of combined training (CT) in postural control and gait parameters in postmenopausal women. Methods A parallel-group, randomized, control study was conducted with 16 weeks of combined training (n = 16) versus a non-training control group (n = 12) in postmenopausal women (aged 59.3 ± 8.0). Pre and postintervention assessments included postural control (using an AMTI force platform - Advanced Mechanical Technology, Inc., Watertown, MA, USA) and gait impairments (using baropodometry). In addition, the upper limb strength and abdominal tests, as well as aerobic capacity, assessed functional indicators. Results The CT intervention in postmenopausal women resulted in improved gait (stride length (p = 0.006); speed (p = 0.013); double support time (p = 0.045); and improved postural control (displacement area of postural sway in a normal base of support with eyes open (p = 0.006). Combined training increased functional indicators (abdominal - p = 0.031; aerobic capacity - p = 0.002). Conclusion In conclusion, combined aerobic plus strength training effectively improved gait and balance control in older women. The postmenopausal women from the CT group walked faster and with bigger steps after the intervention than the control group. In addition, they presented decreased postural sway in standing and decreased the percentage of double support time while walking, which means improved static and dynamic balance control and functional indicators.

Resumo Objetivo Analisar o efeito do treinamento combinado (TC) no controle postural e nos parâmetros da marcha em mulheres na pós-menopausa. Métodos Foi realizado um estudo controlado randomizado de grupos paralelos com 16 semanas de treinamento combinado (n = 16) versus um grupo controle sem treinamento (n = 12) em mulheres na pós-menopausa (59,3 ± 8,0 anos). As avaliações pré e pós-intervenção incluíram controle postural (usando a plataforma de força AMTI) e deficiências da marcha (usando baropodometria). Além disso, os testes de força de membros superiors e abdominal, bem como a capacidade aeróbica, avaliaram indicadores funcionais. Resultados A intervenção do TC em mulheres na pós-menopausa resultou em melhora da marcha (comprimento da passada (p = 0,006), velocidade (p = 0,013), tempo de apoio duplo (p = 0,045) e controle postural aprimorado (área de deslocamento da oscilação postural em base de apoio normal com olhos abertos (p = 0,006). O TC aumentou os indicadores funcionais (abdominal - p = 0,031; capacidade aeróbia - p = 0,002). Conclusão Em conclusão, o TC de força e aeróbico melhorou efetivamente o controle da marcha e do equilíbrio em mulheres idosas. As mulheres na pós-menopausa do grupo CT caminharam mais rápido e com passos maiores após a intervenção do que o grupo controle. Além disso, elas apresentaram redução da oscilação postural em pé e do percentual de tempo de apoio duplo durante a caminhada, o que significa melhora no controle do equilíbrio estático e dinâmico e dos indicadores funcionais.

Effect of unilateral bag use on plantar pressures and static balance in women / Efeito do uso da bolsa unilateral nas pressões plantares e no equilíbrio estático em mulheres

Abstract Introduction: The increasing insertion of women into the labor market has created a need to adapt handbags, with different sizes and weights, which consequently can overload the musculoskeletal system. Objective: To evaluate the effect of using a unilateral bag on plantar pressures and static balance in women. Methods: Cross-sectional study, carried out in Fortaleza in 2018. 258 women aged between 18 and 59 years who used a unilateral bag participated in this study. Two questionnaires were applied, targeting sociodemographic variables, life habits, characteristics of bag use and level of physical activity. Height, scapular symmetry, body and bag mass were also measured. A baropodometer was used to assess plantar pressure and static balance with and without the unilateral bag. Independent and paired t-tests were applied to verify the influence of the bag on the variables of interest, using the SPSS Statistics program (version 23.0). Results: On the side where the bag was carried, an increase in lateral mass distribution (LMD), foot pressure and surface area, and a decrease in the distance from barycenter (p < 0.05) were observed. On the opposite side, a decrease in LMD and an increase in barycenter were detected (p < 0.05). In static balance, no differences were observed in the anteroposterior and side-to-side oscillations with bag placement (p > 0.05). Conclusion: The unilateral bag causes alterations in plantar pressures and ipsilateral barycenter alongside the use of the bag, being a risk factor or aggravation for dysfunctions of the musculoskeletal system and for the occurrence of pain.

Resumo Introdução: A crescente inserção das mulheres no mercado de trabalho ocasionou uma necessidade de adaptação das bolsas, com tamanhos e pesos diferentes, que por consequência podem sobrecarregar o sistema musculoesquelético. Objetivo: Avaliar o efeito do uso da bolsa unilateral nas pressões plantares e no equilí-brio estático em mulheres. Métodos: Estudo transversal, realizado na cidade de Fortaleza em 2018. Participaram 258 mulheres com idade entre 18 e 59 anos e que usavam bolsa unilateral. Aplicaram-se dois questionários visando as variáveis sociodemográficas, hábitos de vida, características do uso da bolsa e nível de atividade física. Foram mensuradas estatura, simetria escapular, massa corporal e da bolsa. Utilizou-se baropodômetro para a avaliação das pressões plantares e equilíbrio estático com e sem a bolsa unilateral. Aplicaram-se testes t de amostras independentes e pareado para verificar a influência da bolsa nas variáveis de interesse, pelo programa SPSS Statistics (versão 23.0). Resultados: No lado que a bolsa era carregada foram observados aumento da distribuição de massa lateral (DML), da pressão do pé e da área de superfície e diminuição da distância do baricentro (p < 0,05). No lado oposto foram detectados diminuição da DML e aumento do baricentro (p < 0,05). No equilíbrio estático, não foram verificadas diferenças nas oscilações ântero-posterior e látero-lateral com a colocação da bolsa (p > 0,05). Conclusão: A bolsa unilateral causa alterações nas pressões plantares e no baricentro homolaterais no lado do uso da bolsa, sendo um fator de risco ou agravamento para as disfunções do sistema musculoesquelético e para a ocorrência de dor.

Anthropometric profile of leg length inequality and its impact on gait / Perfil antropométrico de la desigualdad en la longitud de las piernas y su impacto en la marcha

SUMMARY: Leg length inequality (LLI) affects gait - primarily pelvic and torso movements. LLI is present in around 40-70 % of the healthy population. Due to LLI's significant impact on the body, as well as the possible occurrence of a variety of associated health problems, the aim of this research is to determine whether there is a significant difference in pelvic movement in all three planes, depending on the degree of LLI. This study was conducted on a sample of 30 healthy subjects. The functional length of lower limbs was measured. When LLI was calculated, kinematic measures were taken of pelvic and lower limb movements during gait using 3D cameras and ©Vicon Motion Systems Ltd. UK. The obtained data on kinematic pelvic movement in all three planes during gait were compared with the reference values. The results show that there is no statistically significant difference in pelvic movement about the axes x, y, and z in cases of LLI of up to 18mm (p>0,05). There is a statistically highly significant positive correlation between the difference in functional leg length (r=0,575; p=0,008) and femur length (r=0,525; p=0,015) on one hand, and the difference in pelvic movement about the axis x on the other, compared to the reference values. In a healthy population with LLI from 0 to 18 mm, gait remains unaffected and an increase in LLI predominantly affects pelvic movement about the horizontal axis (x) - pelvic tilt, which exponentially increases with an increase in femur length discrepancy.

La diferencia en la longitud de las piernas (LLI, por sus siglas en inglés) afecta la marcha, principalmente los movimientos pélvicos y del dorso. La LLI está presente en alrededor del 40-70 % de la población sana. Debido al importante impacto de LLI en el cuerpo, así como a la posible aparición de una variedad de problemas de salud asociados, el objetivo de esta investigación fue determinar si existe una diferencia significativa en el movimiento pélvico en los tres planos, dependiendo del grado de LLI. Este estudio se realizó en una muestra de 30 sujetos sanos. Se midió la longitud funcional de los miembros inferiores. Cuando se calculó el LLI, se tomaron medidas cinemáticas de los movimientos pélvicos y de los miembros inferiores durante la marcha utilizando cámaras 3D y ©Vicon Motion Systems Ltd. UK. Los datos obtenidos sobre el movimiento pélvico cinemático en los tres planos durante la marcha se compararon con los valores de referencia. Los resultados mostraron que no existe diferencia estadísticamente significativa en el movimiento pélvico sobre los ejes x, y, y z en casos de LLI de hasta 18 mm (p>0,05). Existe una correlación positiva estadísticamente muy significativa entre la diferencia en la longitud funcional de la pierna (r=0,575; p=0,008) y la longitud del fémur (r=0,525; p=0,015), y la diferencia en el movimiento pélvico sobre el eje x por otro, en comparación con los valores de referencia. En una población sana con LLI de 0 a 18 mm, la marcha no se ve afectada y un aumento en LLI afecta predominantemente el movimiento pélvico sobre el eje horizontal (x) - inclinación pélvica, que aumenta exponencialmente con un aumento en la discrepancia de longitud del fémur.

Efeitos do uso de vestes terapêuticas em programas de reabilitação de crianças com paralisia cerebral: uma revisão integrativa da literatura / Effects of suit therapy rehabilitation programs of children with cerebral palsy: an integrative literature review

A Paralisia Cerebral (PC) engloba um grupo de desordens do movimento e da postura resultantes de uma lesão não progressiva no sistema nervoso. Diversas abordagens fisioterapêuticas vêm sendo propostas para o tratamento de indivíduos com PC, dentre elas o uso de vestes terapêuticas. Sendo assim, a presente revisão teve como objetivo avaliar os efeitos das vestes terapêuticas na reabilitação de crianças com PC, destacando seus benefícios e possíveis limitações. Tratou-se de uma revisão integrativa da literatura realizada nas bases SciELO, Lilacs, Pubmed, Science Direct e PEDro, por meio do descritor "Paralisia Cerebral" e das palavras-chave "AdeliSuit", "PediaSuit", "TheraSuit". Após o levantamento bibliográfico, foram selecionados 11 estudos envolvendo crianças com idade entre um e 15 anos, os quais descreveram o uso das vestes terapêuticas AdeliSuit, TheraSuit e PediaSuit. Todos os estudos apresentaram efeitos favoráveis ao uso das vestes para função motora das crianças avaliadas. Também houveram relatos de melhora na funcionalidade, velocidade e qualidade da marcha e equilíbrio. Apenas quatro estudos compararam programas de reabilitação envolvendo vestes terapêuticas e outras abordagens, os quais apresentaram resultados controversos. Os achados demonstraram resultados favoráveis ao uso das vestes terapêuticas em indivíduos com diagnóstico de PC, apesar de poucas evidências quanto a sua superioridade sobre outras abordagens. (AU)

Cerebral Palsy (CP) is a group of movement and posture disorders resulting from nervous system non-progressive injury. Several physiotherapy approaches have been proposed to individuals with CP treatment, including the use of therapeutic suits. Thus, the present review aimed to assess the effects of therapeutic suits on children with CP rehabilitation, highlighting their benefits and possible limitations. It was an integrative literature review carried out on SciELO, Lilacs, Pubmed, Science Direct and PEDro databases, using tdescriptor "Cerebral Palsy" and keywords "AdeliSuit", "PediaSuit", "TheraSuit". After bibliographic search, 11 studies were selected involving children aged between one and 15 years old, which described the use of therapeutic suits: AdeliSuit, TheraSuit and PediaSuit. All studies showed positive effects therapeutic suits use during rehabilitation for motor function. Improvements in functionality, speed and quality of gait and balance were also reported. Only four studies compared rehabilitation programs involving therapeutic suits and other therapeutic approaches, which showed controversial results. Those findings demonstrated favorable results for the use of therapeutic suits during rehabilitation programs in individuals with CP, despite little evidence regarding their superiority over other approaches. (AU)

Impacto da realidade virtual na funcionalidade e percepção de melhora de indivíduos com hemiparesia crônica: um estudo piloto / Impact of virtual reality-based therapy on functionality and perception of improvement in individuals with chronic hemiparesis: a pilot study

Objetivo: Avaliar os efeitos da realidade virtual sobre a funcionalidade da marcha e percepção de mudança de indivíduos com hemiparesia crônica. Métodos: Estudo clínico piloto do tipo experimental, longitudinal, prospectivo e de braço único. A amostra foi composta por indivíduos hemiparéticos submetidos ao treinamento funcional em ambiente de realidade virtual (RV). Na avaliação inicial (AV1) utilizou-se o Timed Up and Go (TUG) para análise da mobilidade e após 12 sessões de RV, na avaliação final (AV2), acrescentou-se a Escala de Mudança Percebida (EMP). Para verificar a normalidade dos dados utilizou-se o teste de Shapiro-Wilk, o teste T-Student ou de Wilcoxon para comparar os dados (p ≤ 0,05) e o Effect Size (ES) pela fórmula de Cohen (d) para o tamanho do efeito. Resultados: Dez indivíduos hemiparéticos (64,6 ± 9,53 anos) realizaram o TUG (AV1) em 14,59 ± 5,03 segundos e AV2 em 13,96 ± 4,64 segundos (p = 0,18) e o EF teve efeito insignificante (d = 0,14). O jogo Free Step apresentou diferença significativa entre a primeira e última sessão (p = 0,004) e na EMP os valores obtidos foram de 2,57 ± 0,3 de três pontos. Conclusão: A RV não promoveu melhora significante na mobilidade funcional, mas os indivíduos relataram mudanças positivas em alguns componentes da EMP. (AU)

O efeito do movimento de dança Kathak no equilíbrio e marcha na doença de Parkinson: um estudo experimental / The effect of Kathak dance movement on balance and gait in Parkinson's disease: an experimental study

INTRODUÇÃO: Dificuldades de locomoção e equilíbrio são comuns entre os indivíduos com doença de Parkinson (DP). Vários programas diferentes de exercícios foram sugeridos para tratar de problemas de equilíbrio e de marcha para melhorar a qualidade de vida e a adesão do paciente aos exercícios de DP. A dança pode ser uma ferramenta eficaz para resolver esses problemas porque inclui elementos-chave de equilíbrio dinâmico, pode melhorar a mobilidade funcional e, ao mesmo tempo, é agradável e envolvente. OBJETIVOS: O objetivo deste estudo foi avaliar o efeito do movimento de dança Kathak além da fisioterapia convencional no equilíbrio e na marcha em pacientes com doença de Parkinson. MÉTODOS E MATERIAIS: Um total de 44 pacientes diagnosticados com Parkinson foram incluídos no estudo com uma idade média de 63,20 + 8,5 anos. Os pacientes foram divididos aleatoriamente em dois grupos, o grupo controle recebeu fisioterapia convencional, e o grupo experimental recebeu o mesmo juntamente com movimentos de dança Kathak que foram Tatkar e Gatnikas. A intervenção foi dada três dias por semana durante quatro semanas. A pré e pós-avaliação para equilíbrio e marcha foi avaliada por escalas incluindo o teste TUG, Tinetti, FOG-Q e UPDRS-III. A comparação dentro do grupo foi feita usando o teste Wilcoxon Signed rank e entre o grupo usando o teste Mann Whitney U para ver o efeito da intervenção de tratamento. RESULTADOS: A idade média dos participantes de ambos os grupos foi de 64,18±8,53 e 62,23±6,21, respectivamente. A comparação mostrou uma diferença significativa em TUG, Tinetti, e FOG-Q dentro do grupo com p<0,01. A comparação entre grupos não mostrou diferença significativa entre as duas intervenções de tratamento com p=0,361 para TUG, p=0,479 para Tinetti, e p= 0,73 para FOG-Q. CONCLUSÃO: Ambos os grupos mostraram melhorias semelhantes no equilíbrio e na marcha de pacientes com DP. Assim, concluímos que o movimento da Dança Kathak pode ser usado para complementar os exercícios de fisioterapia convencional.

INTRODUCTION: Difficulties with gait and balance are common among individuals with Parkinson's disease (PD). Several different exercise programs have been suggested to address balance and gait problems to improve the quality of life and patient compliance with PD exercises. Dance may be an effective tool for addressing these problems because it includes key elements of dynamic balance, can improve functional mobility, and is, at the same time, enjoyable and engaging. OBJECTIVES: The purpose of this study was to assess the effect of Kathak dance movement in addition to conventional physiotherapy on balance and gait in Parkinson's disease patients. METHODS AND MATERIALS: A total of 44 patients diagnosed with Parkinson's disease were included in the study with a mean age of 63.20 + 8.5 years. Patients were randomly divided into two groups, the control group received conventional physiotherapy, and the experimental group received the same along with Kathak dance movements which were Tatkar and Gatnikas. The intervention was given three days a week for four weeks. Preand post-assessment for balance and gait was assessed by scales including TUG test, Tinetti, FOG-Q, and UPDRS-III. The within-group comparison was made using Wilcoxon Signed rank test and between the group using the Mann Whitney U test to see the effect of treatment intervention. RESULTS: The mean age of participants for both groups were 64.18±8.53 and 62.23±6.21, respectively. The comparison showed a significant difference in TUG, Tinetti, and FOG-Q within the group with p<0.01. The between-group comparison showed no significant difference between the two treatments interventions with p=0.361 for TUG, p=0.479 for Tinetti, and p= 0.73 for FOG-Q. CONCLUSION: Both groups showed similar improvements in balance and gait in PD patients. Thus, we conclude that the Kathak Dance movement can be used to complement conventional physical therapy exercises.

The Influence of the Shoe over the Medial Foot Arch and the Lower Limbs Kinematics in Toddlers / A influência de calçados no arco longitudinal medial do pé e na cinemática dos membros inferiores de crianças no início da fase de aquisição de marcha

Abstract Objective To evaluate the biomechanical behavior of the medial longitudinal arch (MLA) of the foot and the kinematic parameters of the lower limbs with biomimetic footwear (BF) and non-biomimetic (NB1, NB2, NB3 and NB4) footwear in children at the beginning of the gait acquisition phase. Methods Four toddlers were evaluated at the beginning of the gait acquisition phase under the following conditions: walking barefoot, ambulation with BF and NB1, NB2, NB3 and NB4 footwear in hard floor. BF is described as biomimetic because of its property of emulating natural and irregular floors through a dynamic internal insole. The MLA and kinematics of the hip, knee, and ankle during gait were evaluated by three-dimensional motion analysis system. The similarity between the kinematic curves of barefoot and footwear conditions was analyzed by root mean square error (RMSE). Results The use of BF presented the highest magnitude of MLA and the greatest difference in relation to barefoot condition (higher RMSE). The BF showed less difference in the kinematics of the knee and ankle joints during gait when compared to barefoot condition (lower RMSE). NB2 footwear presented hip kinematics more similar to barefoot condition (lower RMSE). Conclusion Biomimetics footwear and NB2 shoes (both with wider forefoot region) generated smaller differences in lower limbs compared to barefoot. In addition, the MLA was higher in the BF, probably because different design from other shoes.

Resumo Objetivo Avaliar o comportamento do arco longitudinal medial do pé (ALM) e os parâmetros cinemáticos dos membros inferiores durante a deambulação com calçados biomiméticos (CBs) e não biomiméticos (NB1, NB2, NB3 e NB4) em crianças no início da fase de aquisição da marcha. Métodos Foram avaliadas quatro crianças no início da fase de aquisição da marcha nas seguintes condições: andar descalço, andar com CBs e calçados NB1, NB2, NB3 e NB4 em solo plano. O calçado biomimético é descrito como biomimético por emular pisos naturais e irregulares por meio de uma palmilha interna dinâmica. O ALM e a cinemática do quadril, joelho e tornozelo durante a marcha foram avaliados por meio de sistema de análise do movimento tridimensional. A similaridade entre as curvas cinemáticas das condições descalça e com calçado foi analisada por meio do cálculo de root mean square error (RMSE). Resultados O CB foi o que apresentou maior magnitude do ALM e maior diferença do ALM em relação à condição descalça (maior RMSE). O CB apresentou ainda menor diferença na cinemática das articulações do joelho e tornozelo durante a marcha quando comparado à condição descalça (menor RMSE). O calçado NB2 apresentou a cinemática do quadril mais semelhante à condição descalça (menor RMSE). Conclusão Os calçados CB e NB2 que apresentam a região do antepé mais larga geraram menores diferenças na cinemática dos membros inferiores. Além disso, o ALM foi maior no CB provavelmente devido a seu design ser diferente daquele dos demais calçados.

Research progress on multicomponent physical exercise for patients with neurocognitive impairment / 浙江大学学报·医学版

Neurocognitive impairment is a group of clinical syndromes characterized by impaired cognitive function and decreased motor ability. Non-pharmacological interventions such as physical exercise have advantages in the treatment of patients with neurocognitive impairment. Multicomponent exercise is a combination of various physical exercises, including strength training, endurance training, balance training and flexibility training, that can improve gait, balance and cardiopulmonary function by increasing muscle mass, strength and endurance in people with neurocognitive impairment, while also reducing the risk of falls in elders. This article reviews the benefits of multicomponent exercise for patients with neurocognitive impairment and its evaluation methods; also describes 4 intervention programs and their clinical application, to provide evidence for clinical practice and promote the application of multicomponent exercise in patients with neurocognitive impairment.

Gait Measurement System Using Laser Range Sensor Based on Lower-limb Rehabilitation Robot / 中国医疗器械杂志

Spatiotemporal gait parameters provide important information for the rehabilitation of patients with gait dysfunction. These parameters are often obtained by complex systems such as optical motioncapture system and pressure plates. However, these systems cannot be deployed at the lower-limb rehabilitation robot easily because of high costs, large area occupation and wearable requirements. We present a gait measurement system with a Light Detection And Ranging(LIDAR) laser sensor based on the lower-limb rehabilitation robot. Firstly, to calculate gait parameters, the data are aggregated into left and right legs by the clustering algorithm and the legs contour is fitted with two circles respectively according to the least square method. Then, the spatiotemporal gait parameters are defined based on the time and position of initial contact(IC) and toe off(TO). Finally, to verify the validity of the proposed system, we compared the results of the proposed system with a 3D motion capture system based on a lower-limb rehabilitation robot. Experimental results showed that the gait detection system can measure the parameters within a small range of error that testified the validation of the proposed system. This system proved to be a valid and reliable method for the measurement of gait parameters.