RESUMEN

Aging disrupts brain function, leading to cognitive decline and neurodegenerative diseases. Senescent astrocytes, a hallmark of aging, contribute to this process through unknown mechanisms. This study investigates how senescence impacts astrocytic mitochondrial dynamics, which are critical for brain health. Our research, conducted using aged mouse brains, represents the first evidence of morphologically damaged mitochondria in astrocytes, along with functional alterations in mitochondrial respiration. In vitro experiments revealed that senescent astrocytes exhibit an increase in mitochondrial fragmentation and impaired mitophagy. Concurrently, there was an upregulation of mitochondrial biogenesis, indicating a compensatory response to mitochondrial damage. Importantly, these senescent astrocytes were more susceptible to mitochondrial stress, a vulnerability reversed by rapamycin treatment. These findings suggest a potential link between senescence, impaired mitochondrial quality control, and increased susceptibility to mitochondrial stress in astrocytes. Overall, our study highlights the importance of addressing mitochondrial dysfunction and senescence-related changes in astrocytes as a promising approach for developing therapies to counter age-related neurodegeneration and improve brain health.

Asunto(s)

RESUMEN

To investigate the effects of photobiomodulation applied to respiratory muscles on lung function, thoracoabdominal mobility, respiratory muscle strength, and functional capacity in COPD patients. This is a randomized double-blind crossover clinical trial. Twelve male COPD patients participated in the study. Participants were randomly allocated to receive two photobiomodulation sessions, 1 week apart: (1) an effective photobiomodulation session applied at the main respiratory muscles by means of a cluster with 69 light-emitting diodes (LEDs), containing 35 red (630 ± 10 nm; 10 mW; 0.2 cm2) and 34 near-infrared (830 ± 20 nm; 10 mW; 0.2 cm2) LEDs and (2) a sham photobiomodulation session, following the same procedures without emitting light. The primary outcomes were pulmonary function (spirometric indexes); thoracoabdominal mobility (cirtometry); respiratory muscle strength (maximal respiratory pressures), assessed at three moments: (1) baseline, (2) 1 h after intervention, and (3) 24 h after intervention; and the functional capacity, assessed by the 6-min walk test (6MWT) at baseline and 24 h after intervention. No significant interactions were found for spirometric variables, maximal respiratory pressures, and cirtometry. However, there was a Time × Condition interaction (F = 18.63; p = 0.001; η2p = 0.62) in the walked distance on the 6MWT, with a significant increase after photobiomodulation intervention (p < 0.01) compared with the baseline. Photobiomodulation applied to respiratory muscles was effective in improving acute functional capacity in COPD patients. To the best of our knowledge, this is the first study assessing the effects of photobiomodulation applied to respiratory muscles in patients with COPD.

Asunto(s)

RESUMEN

Objetivo: Avaliar o efeito deste treinamento sobre a tolerância ao exercício em pessoas com DPOC e sobre o prognóstico da doença. Método: Nove idosos com DPOC (GDPOC) e nove idosos saudáveis (GS) foram avaliados antes e após TFC por Teste de caminhada de seis minutos (TC6'), teste incremental no cicloergometro (TIC), composição corporal e teste de 1 repetição máxima (1RM). O GDPOC foi avaliado também pelo índice BODE. O TFC constou de trinta minutos de treinamento aeróbio e três séries de quinze repetições de treinamento resistido em leg press horizontal com carga de 40-60% do teste de 1 repetição máxima, com intervalo de cinco minutos para recuperação. Foram realizadas três sessões semanais durante seis semanas. Resultados: No GDPOC, houve aumento significativo na distância percorrida e melhora no índice BODE. Conclusão: O TFC de seis semanas evidencia ser efetivo para melhora da tolerância ao exercício em indivíduos idosos com DPOC e do prognóstico de indivíduos da doença.

Objective: To identify the effect of this training on exercise tolerance in people with COPD and on the prognosis of the disease. Method: Nine elderly patients with COPD (COPDG) and nine healthy elderly (HG), were avaluated before and after physical training to: six-minute walk test (6MWT), incremental test (ICT), body composition and test 1 repetition maximum (1RM), it was avaluated also in COPDG the BODE index. The training consisted of thirty minutes of aerobic training and three sets of fifteen repetitions of resistance training in leg press horizontal with 40-60% of 1RM, with an interval of five minutes for recovery. Three weekly sessions were held for six weeks. Results: In COPDG, there was a significant increase in the distance covered and an improvement in the BODE index. Conclusion: The 6-week CPT evidence to be effective in improving exercise tolerance in both elderly COPD subjects and the prognosis of disease.

Objetivo: evaluar el efecto de esta capacitación sobre la tolerancia al ejercicio en personas con EPOC y sobre el pronóstico de la enfermedad. Métods: Nueve personas mayores con EPOC (GEPOC) y nueve personas mayores sanas (GS) fueron evaluadas antes y después de TFC mediante una prueba de caminata de seis minutos (6MWT), prueba incremental en el cicloergómetro (ICT), composición corporal y una prueba de 1 repetición máxima (1RM). El GEPOC también se evaluó utilizando el índice BODE. El TFC consistió en treinta minutos de entrenamiento aeróbico y tres series de quince repeticiones de entrenamiento de resistencia en press de piernas horizontal con una carga del 40-60% de la prueba de 1 repetición máxima, con un intervalo de cinco minutos para la recuperación. Se realizaron tres sesiones semanales durante seis semanas. Resultados: En GEPOC, hubo un aumento significativo en la distancia recorrida y una mejora en el índice BODE. Conclusión: El TFC de seis semanas demuestra ser efectivo para mejorar la tolerancia al ejercicio en personas mayores con EPOC y el pronóstico de las personas con la enfermedad.

Asunto(s)

RESUMEN

CONTEXT: No consensus has been reached regarding the glucocorticoid (GC) to use for congenital adrenal hyperplasia (CAH) during adulthood. Dexamethasone (DEX), because of its longer half-life, could improve compliance; however, no data are available regarding the long-term effects of DEX therapy. OBJECTIVE: To analyze the metabolic effect of DEX therapy for adults with CAH. DESIGN: Retrospective analysis of a CAH cohort receiving DEX therapy. SETTING: Medical School Hospital, São Paulo University, Brazil. PARTICIPANTS: Sixty patients with well-controlled classic CAH (41 women; 30 with salt-wasting) receiving DEX after achievement of final height. INTERVENTIONS: None. MAIN OUTCOME MEASURES: Clinical, laboratory, and metabolic data were compared immediately before DEX and at the last evaluation. RESULTS: The mean age at the last evaluation was 31.9 ± 9.6 years, and the duration of DEX therapy was 11.5 ± 4.9 years. The mean DEX dose was 0.18 ± 0.07 mg/m2/d. The body mass index SD score (1.6 ± 1.6 vs 1.5 ± 1.5 mg/m2; P = 0.65) and obesity prevalence (27% vs 27%) did not differ between evaluations. However, the waist/height ratio (WtHR) had increased from 0.54 ± 0.08 to 0.56 ± 0.1 (P = 0.001). An increase in the homeostatic model assessment for insulin resistance index (2.5 ± 1.3 vs 2.8 ± 1.7; P = 0.03) was observed and positively correlated with the WtHR (r = 0.54). The prevalence of metabolic syndrome (7% vs 10%; P = 0.7) and hypertension (15% vs 13.3%; P = 0.8) did not differ significantly between the two evaluations. CONCLUSIONS: Long-term and low-dose DEX therapy did not lead to increases in obesity or metabolic syndrome, although it was associated with an increased WtHR and greater homeostatic model assessment for insulin resistance observed with chronic use of GCs. DEX appears to be an acceptable option to treat adult CAH.

RESUMEN

Introdução: A área da pneumologia tem dado importância para a associação da função respiratória com a obesidade. As transformações orgânicas decorrentes da obesidade implicam em alterações dos sistemas respiratório, imunomodulador, metabólico (musculatura esquelética, consumo de oxigênio e produção de gás carbônico) e circulatório. Este trabalho tem por objetivo revisar sobre o tema obesidade abdominal e sistema respiratório. Métodos: Revisão de literatura usando as bases de dados Scielo, Bireme, Pubmed e Scopus tendo como descritores: circulatory and respiratory physiological phenomena; respiratory function tests e abdominal obesity, sem limite para o ano de publicação e idioma. Resultados: A obesidade pode afetar o sistema respiratório independente da condição do parênquima pulmonar. Em indivíduos obesos, o mecanismo de respiração está prejudicado, pois o excesso de adiposidade que reveste o tórax e ocupa o abdome dificulta a ação da musculatura respiratória. A obesidade abdominal não é apenas um fator estético ou metabólico, mas também um fator mecânico que pode comprometer a função da musculatura respiratória e consequentemente a função pulmonar. As alterações na função respiratória mais frequentemente encontradas na obesidade são: redução do volume de reserva expiratório, capacidade vital, capacidade residual funcional e capacidade pulmonar total. Além do impacto mecânico, respiratório e cardiovascular, a obesidade também interfere para o estímulo e controle do sistema nervoso autônomo. Conclusão: A obesidade abdominal está interligada a fatores respiratórios desde o controle central respiratório até limitação dos constituintes respiratórios podendo ocasionar distúrbio respiratório restritivo e obstrutivo.

Introduction: The field of pneumology pointed out the association of respiratory function with obesity. The organic changes due to obesity imply changes in the respiratory, immunomodulatory, metabolic (skeletal musculature, oxygen consumption and carbon dioxide production) and circulatory systems. The aim of his study was a review about abdominal obesity and respiratory system. Methods: Literature review using the Scielo, Bireme, Pubmed and Scopus databases, and the following descriptors: circulatory and respiratory physiological phenomena; respiratory function tests and abdominal obesity, no limit to the year of publication and language. Results: Obesity can affect the respiratory system independent of pulmonary parenchyma condition. In obese individuals, the breathing mechanism is impaired, because the excess of fat that lines the chest and occupy the abdomen makes it difficult for the respiratory musculature to function. Abdominal obesity is not only an aesthetic or metabolic factor, but also a mechanical factor that can compromise respiratory muscle function and consequently lung function. The changes in respiratory function most frequently found in obesity are: reduction of expiratory reserve volume, vital capacity, functional residual capacity and total lung capacity. Besides the mechanical, respiratory and cardiovascular impact, obesity also interferes with the stimulation and control of the autonomic nervous system. Conclusion: Abdominal obesity is interrelated to respiratory factors from central respiratory control to limitation of respiratory constituents and can cause restrictive and obstructive respiratory disorder.

RESUMEN

BACKGROUND: The 6-min walk test (6MWT) is an important tool in the assessment of functional capacity and prognosis in patients with COPD. However, especially in long-term follow-up in clinical settings, this test may be executed by a different assessor, and it is not well known whether 6MWT has an acceptable inter-rater reliability. The aim of this study is to analyze the intra- and inter-rater reliability of the performance in 6MWT, its cardiorespiratory changes, and effort perception in subjects with COPD. METHODS: Thirty-two subjects with a diagnosis of COPD participated in the study, but 3 subjects did not appear on the second day of evaluation and therefore were included only in the intra-rater analysis; the first and second tests were executed by the same assessor with a 30-min interval between them, and the last was executed by a different assessor a week later. The intra-rater reliability was verified comparing the first and second 6MWT performance, and the inter-rater reliability was verified comparing the third test with the best performance of the first and second tests. RESULTS: The intraclass correlation coefficient values were >0.75 (P < .001) for the walked distance on the 6MWT; however, the limits of agreement, SE of measurement, and minimal detectable difference were higher than the minimum clinically important differences already mentioned in the literature (∼25, 26, and 54 m), and the coefficient of variation was small in both intra- and inter-rater comparisons. CONCLUSIONS: The 6MWT showed excellent reliability for distance and perceived exertion and moderate to excellent for HR and SD as assessed by intra- and inter-rater analysis. Thus, based on the main study outcomes, we concluded that the 6MWT can be compared when conducted by 2 different evaluators.

Asunto(s)

RESUMEN

Modelo do estudo: Trata-se de estudo original, transversal, clínico e comparativo. Objetivo do estudo: Avaliar as repercussões cardiorrespiratórias agudas no uso correto de inaladores aerossóis de pó seco (IPS) em pacientes com asma. Metodologia: Foram avaliados, em dois momentos, 17 pacientes adultos asmáticos em uso de IPS (Formoterol e Budesonida). As variáveis avaliadas, pré e pós-uso do IPS, foram: antropométrica, cognitiva, força muscular, sinais vitais, saturação de oxigênio, pressões respiratórias e pico de fluxo. No primeiro momento (M1) foi avaliada e monitorada a execução rotineira antes e imediatamente após uso do IPS e entregue folheto explicativo sobre o uso correto. No segundo momento (M2), 30 dias após M1, houve a mesma avaliação, entretanto, com execução correta do IPS. Resultados: No M2 ocorreram aumentos significativos da pressão inspiratória de 64,2±2,03 para 74,1±31,7 (cmH2O); pressão expiratória de 71,05±33,8 para 80±31,4 (cmH2O); capacidade vital de 3,3±0,9 para 3,9±0,9 (l) e reduções na frequência de pulso de 80,310,7 para 72,2±9,4 (bpm) e do duplo produto de 10001±1693 para 8846±1416 (teste t-Student pareado, p<0,05). Conclusões: O uso correto de IPS traz ao paciente repercussões cardiorrespiratórias positivas, melhorando as condições respiratórias e reduzindo o trabalho cardíaco.

Study model: It is a cross-over, clinical and comparative study. Objective: To evaluate the acute respiratory and cardiac respercussions in correct use of the dry powder inhalers (DPI) in patients with asthma. Methodology: Seventeen adult patients with asthma using DPI (Formoterol and Budesonide)were evaluated in two moments. The mensuared variables, before and after use of DPI, were: anthropometric, cognitive, muscle strength, vital signs, periferic oxygen saturation, respiratory pressures and peak expiratory flow. In the first moment (M1) was evaluated and monitored the usual performance before and immediately after using DPI and delivered an explicative leaflet about the correct use. In the second moment (M2), 30 days after M1, there was the same evaluation, however, with correct use ofthe DPI. Results: In the M2 there were increases to inspiratory pressure of 64,2±2,03 to 74,1±31,7(cmH2O); expiratory pressure of 71,05±33,8 to 80±31,4 (cmH2O); vital capacity of 3,3±0,9 to 3,9±0,9(l) and reductions in the pulse frequence of 80,3±10,7 to 72,2±9,4 (bm) and double product of 10001±1693 to 8846±1416 (paired t test, p<0,05). Conclusions: The correct use of the DPI promoves the positive respiratory and cardiac repercussions, improving respiratory conditions and reducing cardiac work.

Asunto(s)

RESUMEN

OBJECTIVES: to evaluate the concurrent validity of the six-minute step test (6MST) in assessing exercise capacity of COPD patients using the six-minute walk test (6MWT) as a gold-standard. The predictive validity of the 6MST was assessed to determine a cut-off point for identification of low exercise capacity. METHOD: thirty-two COPD patients (50-87 years old) with mild to very severe obstruction performed the 6MST and 6MWT twice. RESULTS: Concurrent validity: a strong positive correlation (Pearson) between the number of ascents on the first (T1), second (T2) and the best of both (T1 or T2) tests during the 6MWT was observed. Although a moderate negative correlation with BODE index and FEV1 was found, it was considered insufficient to test the validity, therefore ROC curves were not applied. The predictive validity (ROC) of the 6MST to identify low physical capacity (compared with the 6MWT) using the performance of T1 or T2, or solely T1 was considered accurate, and the area under the curve was 0.8 (IC95% 0.62-0.98) and 0.85 (IC95% 0.70-0.99), respectively. To classify patients, the cut-off points of 86 and 78 steps were chosen, with both values showing 90% of sensitivity and specificity of 64% and 68% for T1 or T2, or solely T1, respectively. CONCLUSION: The number of steps on the 6MST was valid to verify exercise capacity in COPD patients and the cut-off point of 78 steps was able to identify patients with poor exercise tolerance. Values under this cut-off point are considered to identify patients with a poorer prognosis.

Asunto(s)

RESUMEN

INTRODUÇÃO: Os testes caminhada de seis minutos (TC6) e degrau de seis minutos (TD6) são meios de avaliação da capacidade funcional. No entanto, pouco se sabe sobre sua reprodutibilidade em adultos jovens. OBJETIVO: Avaliar a reprodutibilidade relativa e absoluta tanto intra quanto inter-avaliadores do TC6 e TD6 em indivíduos adultos jovens. MÉTODOS: Foram avaliados 33 indivíduos adultos jovens aparentemente saudáveis por meio da espirometria; e realizados os testes TC6 e TD6. Três (T1, T2 e T3) TC6 e TD6 foram feitos em cada indivíduo, sendo o último de cada teste realizado por um avaliador diferente. Para a análise intra-avaliadores foram comparados os desempenhos do T1 e T2 enquanto que a análise inter-avaliadores foi feita pela comparação dos desempenhos do T3 com: T1; T2; e escolha do melhor dos primeiros dois testes. Foi calculado o coeficiente de correlação intra-classe (CCI) como medida da reprodutibilidade relativa; o erro padrão de medida; a diferença mínima detectável; traçados gráficos de Bland-Altman e teste ANOVA para analisar a reprodutibilidade absoluta. RESULTADOS: Observaram-se, nos dois testes funcionais, intra e inter-avaliadores, valores excelentes de reprodutibilidade relativa (CCI>0,75) e a reprodutibilidade absoluta mostrou alto erro. CONCLUSÃO: O TD6 e o TC6 apresentaram reprodutibilidade intra e inter-avaliadores excelente para a população adulto jovem, mas altos valores de erro. .

INTRODUCTION: Six Minute Walk Test (6MWT) and Six Minute Step Test (6MST) are tests to evaluate functional capacity. However, reproducibility of these tests is still not well known in young adults. OBJECTIVE: To evaluate intra and inter-rater relative and absolute reproducibility of 6MWT and 6MST in young adults. METHODS: Thirty-three apparently health young adults were evaluated through spirometry, 6MWT and 6MST. Three (T1, T2 and T3) of each 6MWT and 6MST were carried out on each individual, the latter (T3) by a different evaluator. Intra-rater analysis was performed comparing the performance of T1 and T2, while the inter-rater analysis was executed using the comparisons of T3 with T1, T2 and the best result of the first two. Intra-class correlation coefficient (ICC) was calculated as a measure of relative reproducibility; the standard error of measurement, minimal detectable change, Bland-Altman plots and repeated measures ANOVA were used to verify absolute reproducibility. RESULTS: Excellent values of relative reproducibility (ICC>0.75) were observed in both 6MWT and 6MST, yet high error values were found in absolute reproducibility analysis. CONCLUSION: 6MWT and 6MST present excellent intra and inter-rater relative reproducibility, but high error values. .

INTRODUCCIÓN: Los tests de caminata de seis minutos (TC6) y escalón de seis minutos (TD6) son medios de evaluación de la capacidad funcional. Mientras tanto, poco se sabe sobre su reproductibilidad en adultos jóvenes. OBJETIVO: Evaluar la reproductibilidad relativa y absoluta tanto intra como inter-evaluadores del TC6 y TD6 en individuos adultos jóvenes. MÉTODOS: Fueron evaluados 33 individuos adultos jóvenes aparentemente saludables por medio de espirometría; y realizados los tests TC6 y TD6. Tres (T1, T2 y T3) TC6 y TD6 fueron hechos en cada individuo, siendo el último de cada test realizado por un evaluador diferente. Para el análisis intra-evaluadores fueron comparados los desempeños del T1 y T2 mientras que el análisis inter-evaluadores fue hecho por la comparación de los desempeños del T3 con: T1; T2; y selección del mejor de los primeros dos tests. Fue calculado el coeficiente de correlación intra-clase (CCI) como medida de la reproductibilidad relativa; el Error Estándar de Medida; la diferencia mínima detectable; trazados gráficos de Bland-Altman y test ANOVA para analizar la reproductibilidad absoluta. RESULTADOS: Se observaron, en los dos tests funcionales, intra e inter-evaluadores, valores excelentes de reproductibilidad relativa (CCI>0,75) y la reproductibilidad absoluta mostró alto error. CONCLUSIÓN: El TD6 y el TC6 presentaron reproductibilidad intra e inter-evaluadores excelente para la población adulto joven, pero altos valores de error. .

RESUMEN

Objectives: to evaluate the concurrent validity of the six-minute step test (6MST) in assessing exercise capacity of COPD patients using the six-minute walk test (6MWT) as a gold-standard. The predictive validity of the 6MST was assessed to determine a cut-off point for identification of low exercise capacity. Method: thirty-two COPD patients (50-87 years old) with mild to very severe obstruction performed the 6MST and 6MWT twice. Results: Concurrent validity: a strong positive correlation (Pearson) between the number of ascents on the first (T1), second (T2) and the best of both (T1 or T2) tests during the 6MWT was observed. Although a moderate negative correlation with BODE index and FEV1 was found, it was considered insufficient to test the validity, therefore ROC curves were not applied. The predictive validity (ROC) of the 6MST to identify low physical capacity (compared with the 6MWT) using the performance of T1 or T2, or solely T1 was considered accurate, and the area under the curve was 0.8 (IC95% 0.62-0.98) and 0.85 (IC95% 0.70-0.99), respectively. To classify patients, the cut-off points of 86 and 78 steps were chosen, with both values showing 90% of sensitivity and specificity of 64% and 68% for T1 or T2, or solely T1, respectively. Conclusion: The number of steps on the 6MST was valid to verify exercise capacity in COPD patients and the cut-off point of 78 steps was able to identify patients with poor exercise tolerance. Values under this cut-off point are considered to identify patients with a poorer prognosis. .

Objetivos: Avaliar a validade concorrente do desempenho no teste de degrau de seis minutos (TD6) em analisar a capacidade física da DPOC, relacionando-o com o teste de caminhada de seis minutos (TC6), bem como verificar a presença de validade de critério preditiva do TD6, determinando um valor de corte para identificar baixa capacidade física. Método: Trinta e dois pacientes com DPOC estágios leve-muito grave, de ambos os sexos, entre 50-87 anos, realizaram dois TD6 e dois TC6. Resultados: Validade concorrente: observou-se correlação forte positiva (Pearson) entre o número de subidas do primeiro (T1), segundo (T2) e do melhor dos dois (T1 ou T2) TD6 com a distância percorrida no TC6. Embora constatamos correlações negativas entre os desempenhos no TD6 com o índice BODE e VEF1, essas não foram suficientes para caracterizar validade, não sendo traçadas as curvas ROC. A validade preditiva (curvas ROC) do TD6 para identificar baixa capacidade física (comparação com o TC6), utilizando o desempenho do T1 ou T2 ou somente do T1, foi considerada acurada para alguns propósitos, sendo a área abaixo da curva de 0,8 (IC95% 0,62-0,98) e 0,85 (IC95% 0,70-0,99), respectivamente. Para classificar os pacientes, escolhemos o ponto de corte de 86 e 78 degraus, apresentando sensibilidade de 90% e 90% e especificidade de 64% e 68%, para T1 ou T2 e somente T1, respectivamente. Conclusão: O desempenho no TD6 apresentou-se válido para verificar capacidade física na DPOC e identificou pacientes com baixa capacidade física, utilizando como ponto de corte 78 degraus, em que valores abaixo disso representaram pior prognóstico. .

Asunto(s)

RESUMEN

BACKGROUND: Six-minute step test (6MST) has been used to assess functional capacity in chronic conditions; however, its reproducibility in the COPD population has not been evaluated. Our study objective was to evaluate 6MST reproducibility. METHODS: The test was performed in a single 20-cm height step, and subjects were instructed to step up and down (cadence-free) for 6 min. Subjects underwent three tests. The first and second were controlled by the same assessor with a 30-min interval. The third test was controlled by a different assessor one week later. For intra-rater comparison, the first and second performances of the test were used, and for inter-assessor comparison, the better performance of the first two tests was compared with the third test. RESULTS: Excellent intra-rater and inter-rater relative reproducibility was observed (intraclass correlation coefficient > 0.8), and there was no statistical difference (repeated measures of analysis of variance) among the performances of the three tests. Intra-rater error values were acceptable (mean error of 5.7 steps and limits of agreement between -7 and 18 steps). Inter-rater error values were not acceptable (mean error of 4.4 steps and limits of agreement between -20 and 29 steps. CONCLUSIONS: 6MST proved to be reproducible in the COPD population when performed by the same assessor.

Asunto(s)

RESUMEN

O liraglutide é um análogo do peptídeo similar ao glucagon tipo 1 (GLP-1) disponibilizado para tratar diabetes tipo 2 por meio da estimulação da secreção de insulina e inibição da liberação de glucagon glicose-dependente. Em pacientes não diabéticos, o aumento pós-prandial na secreção de insulina pelas células β leva a uma supressão na secreção de glucagon pelas células α, através de mecanismos parácrinos. Entretanto, em pacientes com diabetes tipo 2, tem sido demonstrado que o aumento pós-prandial de concentração de glucagon contribui para a hiperglicemia. A hiperglucagonemia pode haver por dois mecanismos: secreção pós-prandial inadequada de insulina ou efeito da toxicidade da hiperglicemia sobre a função das células α pancreáticas. Portanto, é possível que haja um distúrbio fisiopatológico similar em diabéticos tipo 1 e tipo 2. O presente estudo se propõe a relatar retrospectivamente três casos clínicos avaliando o impacto na perda de peso e na redução da necessidade diária de insulina em pacientes com diabetes tipo 1, após introdução do uso de análogo de GLP-1, liraglutide, uma vez que, um adequado controle glicêmico em diabéticos tipo 1 permanece um desafio (AU)

Asunto(s)

RESUMEN

O objetivo do estudo foi investigar se há relação entre o impacto da Doença Pulmonar Obstrutiva Crônica (DPOC) no estado de saúde com o nível de dispneia nas atividades de vida diária (AVD) e o índice preditor de mortalidade em pacientes em reabilitação pulmonar (RP). Trata-se de um estudo transversal, em que foram avaliados 32 pacientes com DPOC moderada a muito grave (23 homens; 66,6±12,0 anos; VEF1: 40,6±15,6% previsto) por meio do COPD Assessment Test (CAT), Índice de Massa Corpórea (IMC), Teste de Caminhada de Seis Minutos (TC6), London Chest Activity of Daily Living Scale (LCADL), modified Medical Research Council (mMRC) e Índice BODE (Body mass index, airflow Obstruction, Dyspnea and Exercise capacity). Observaram-se correlações positivas moderadas do CAT com o questionário mMRC (r=0,35; p=0,048), a pontuação total da LCADL (r=0,60; p<0,001) e com a porcentagem da pontuação total da LCADL (r=0,57; p=0,001). Apenas a pontuação total da LCADL é capaz de predizer independentemente a pontuação do questionário CAT (p<0,05; r²=0,61). Não foram constatadas correlações significativas entre o CAT e o Índice BODE, IMC, TC6 e VEF1. Dessa forma, quanto maior o nível de dispneia nas AVD, maior o impacto da DPOC no estado de saúde do paciente, entretanto, o mesmo não ocorre em relação ao prognóstico de mortalidade nos pacientes com DPOC em RP...

The aim of this study was to investigate if there is a relationship between the impact of Chronic Obstructive Pulmonary Disease (COPD) on health status and the level of dyspnea in Activities of Daily Living (ADL) and the mortality predictor index in patients undergoing Pulmonary Rehabilitation (PR). It is a cross-sectional study in which 32 patients with moderate to very severe COPD (23 men; 66.6±12.0 years; FEV1: 40.6±15.6% predicted) were assessed by: COPD Assessment Test (CAT), Body Mass Index (BMI), six-Minute Walking Test (6MWT), London Chest Activity of Daily Living Scale (LCADL), modified Medical Research Council (mMRC) and BODE Index (Body mass index, airflow Obstruction, Dyspnea and Exercise capacity). The CAT score presented moderate correlation with the mMRC questionnaire (r=0.35; p=0.048), total score of LCADL (r=0.60; p<0.001) and total score LCADL percentage (r=0.57; p=0.001). Only the total score of LCADL is able to predict the CAT questionnaire scores (p<0.05; r²=0.61). There were no significant correlations between CAT and BODE index, BMI, FEV1 and 6MWT. Thus, the higher the level of dyspnea in ADL, the greater the impact of COPD on the patient's health status. However, this is not true in relation to mortality prognosis in patients with COPD in PR...

El objetivo del estudio fue investigar si hay relación entre el impacto de la Enfermedad Pulmonar Obstructiva Crónica (EPOC) en el estado de salud con el nivel de disnea en las actividades de la vida diaria (AVD) y el índice predictor de mortalidad en pacientes en rehabilitación pulmonar (RP). Se trata de un estudio transversal, en el que fueron evaluados 32 pacientes con EPOC moderada a muy grave (23 hombres; 66,6±12,0 años; VEF1: 40,6±15,6% previsto) por medio del COPD Assessment Test (CAT), Índice de Masa Corpórea (IMC), Test de Caminata de Seis Minutos (TC6), London Chest Activity of Daily Living Scale (LCADL), mo dified Medical Research Council (mMRC) e Índice BODE (Body mass index, airflow Obstruction, Dyspnea and Exercise capacity). Se observaron correlaciones positivas moderadas del CAT con el cuestionario mMRC (r=0,35; p=0,048), la puntuación total de la LCADL (r=0,60; p<0,001) y con el porcentaje de la puntuación total de la LCADL (r=0,57; p=0,001). Apenas la puntuación total de la LCADL es capaz de predecir independientemente la puntuación del cuestionario CAT (p<0,05; r²=0,61). No fueron constatadas correlaciones significativas entre el CAT y el Índice BODE, IMC, TC6 e VEF1. De esa forma, cuanto mayor es el nivel de disnea en las AVD, mayor es el impacto de la EPOC en el estado de salud del paciente, entre tanto, lo mismo no ocurre en relación al pronóstico de mortalidad en los pacientes con EPOC en RP...

Asunto(s)

RESUMEN

INTRODUÇÃO: Pacientes com Doença Pulmonar Obstrutiva Crônica (DPOC) apresentam diminuição da capacidade funcional, tornando imprescindível a sua avaliação por meio de testes físicos funcionais. OBJETIVOS: Comparar, em pacientes com DPOC, saturação periférica de oxigênio (SpO2), dispneia e fadiga de membros inferiores (MMII) nos testes de caminhada de seis minutos em corredor (TC6) e em pista oval (TC6Po), do degrau de seis minutos (TD6) e de sentar-e-levantar da cadeira de dois minutos (TSL). Além disso, pretende-se verificar se há correlação e concordância dessas variáveis entre o TC6 e os demais testes. MATERIAIS E MÉTODOS: Foram avaliados 11 pacientes com DPOC (71 ± 8 anos, VEF1 < 80% previsto) por meio dos testes. RESULTADOS: Na análise intertestes, não se observaram diferenças significativas nos deltas da SpO2, dispneia (Δdispneia) e fadiga de MMII (ΔfadigaMMII). Constatou-se correlação significante, mas não concordância entre os menores valores da SpO2 no TC6 com os menores valores da SpO2 nos TC6Po, TD6 e TSL, sendo a média da diferença entre as médias com ± 1,96 desvio padrão: 0,8 ± 3,5; -1,9 ± 3,5 e -2,5 ± 4,6, respectivamente; entre Δdispneia e ΔfadigaMMII no TC6 com Δdispneia e ΔfadigaMMII no TC6Po: 0,0 ± 1,0 e 0,4 ± 0,8, respectivamente; e do ΔfadigaMMII no TC6 com ΔfadigaMMII no TSL: 0,1 ± 1,1. CONCLUSÃO: Os testes funcionais produziram respostas de oxigenação e perceptuais de esforço semelhantes em magnitude. Entretanto, de acordo com as variáveis analisadas, não foi encontrada concordância entre o TC6 com os demais testes, pelas grandes variações dos limites de concordância e grande variação interindividual, assim o TC6Po, TD6 e TSL não substitui o TC6.

INTRODUCTION: Patients with Chronic Obstructive Pulmonary Disease (COPD) have reduced functional capacity, becoming indispensable to their evaluation through functional physical tests. OBJECTIVE: To compare the peripheral oxygen saturation (SpO2), dyspnea and fatigue of the lower limbs (LL), between the six-minute walk test in hallway (6MWT) and the of oval track (6MWToT), the six-minute step test (6MST) and the sit--to-stand test (STST), in patients with COPD; also verifying correlate and concordance of these variables between 6MWT and other tests. MATERIALS AND METHODS: Ten patients with COPD (72 ± 7 years, FEV1 < 80% predicted) were assessed using the functional tests. RESULTS: In the inter-tests analysis, there was no significant difference in SpO2 and in the change in dyspnea (Δdyspnea) and fatigue in the lower-limbs (ΔfatigueLL) between rest and exercise of peak (Δ). Significant correlation were observed, but no concordance between the lowest values of SpO2 in the 6MWT with lowest values of SpO2 in 6MWToT, 6MST and STST, and the mean of difference between the mean with standard deviation ± 1.96: 0.8 ± 3.5%, -1.9 ± 3.5% and -2.5 ± 4.6%, respectively; and between Δdyspnea and ΔfatigueLL in the 6MWT with the Δdyspnea and ΔfatigueLL in the 6MWToT: 0.0 ± 1.0 and 0.4 ± 0.8, respectively; and ΔfatigueLL in the 6MWT with ΔfatigueLL in the STST: 0.1 ± 1.1. CONCLUSION: The functional tests assess oxygenation and perceived effort responses similar in magnitude. However, according to the variables analyzed, weren't found correlation between the 6MWT with the 6MWToT, 6MST and STST, by the large variations in the limits of agreement and large interindividual variation, thereby the 6MWToT, 6MST and STST and doesn't replace the 6MWT.

Asunto(s)

RESUMEN

OBJECTIVES: To assess whether there is a correlation between oxygen uptake (VO2) and heart rate (HR) on-kinetics in the constant-load cycle-ergometer test (CLT) and the BODE index and its isolated variables in patients with chronic obstructive pulmonary disease (COPD). METHOD: Fourteen male patients between 55 and 78 years of age with moderate to severe COPD were evaluated. Each patient underwent spirometry, the six-minute walk test (6MWT), the cycle-ergometer incremental test (IT) and CLT on alternate days. The exhaled gases were collected, and the VO2 and HR on-kinetics were analyzed. The BODE index was calculated. RESULTS: It was noted that the VO2 tau (τ) and mean response time (MRT) were significantly higher than HR τ and MRT. Moderate and strong correlations between τ and MRT of the VO2 and HR and the BODE index was noted (r=0.75 and r=0.78; r=0.62 and r=0.63, respectively), and there were correlations between the VO2 τ and MRT and the forced expiratory volume in one second (FEV1) (r=-0.60; r=-0.53) and the distance traveled at 6MWT (DT-6MWT) (r=-0.61; r=-0.44) and DT-6MWT % predicted (r=-0.62; r=-0.46). The HR τ and MRT were correlated with DT-6MWT (r=-0.59; r=-0.58) and DT-6MWT % predicted (r=-0.62; r=-0.62). CONCLUSION: The slowing of cycle-ergometer VO2, and especially of HR on-kinetics, may be key markers of disease severity. Furthermore, airflow obstruction and reduced exercise capacity are associated with the slowing of patients' VO2 and HR on-kinetics.

Asunto(s)

RESUMEN

O teste de caminhada de seis minutos (TC6) tem sido considerado simples, seguro, de fácil administração, além de fornecer resultados representativos sobre atividades habituais do dia a dia. Os objetivos do estudo foram avaliar e comparar a distância percorrida no TC6 com as distâncias previstas por equações disponíveis na literatura científica em adultos e idosos saudáveis do município de São Carlos (SP), e verificar a aplicabilidade dessas equações nessa população. Foram avaliados 43 indivíduos (23 homens), dos 55 aos 78 anos, por meio da avaliação física, espirometria e do TC6. Observamos que a distância percorrida no TC6 foi significativamente (teste t-pareado: p<0,05) maior que os valores previstos pelas equações de Enright e Sherril, Masmoudi et al., Alameri, Al-Majed e Al-Howaikan e Dourado, Vidotto e Guerra, e os mesmos foram significativamente menores que os previstos por Troosters, Gosselink e Decramer, Gibbons et al., Enright et al., Camarri et al., Ben Saad et al. e Soares e Pereira. Não foram observadas diferenças significativas entre a distância percorrida no TC6 e os valores previstos pelas equações de Chetta et al. e Iwama et al. A maioria das equações de referências utilizadas no presente estudo subestima ou superestima os valores obtidos no TC6, exceto as propostas por Chetta et al. e Iwama et al. que se mostraram aceitáveis para a população estudada. Existe diferença entre as distâncias, mesmo quando o TC6 é realizado com uma metodologia semelhante e rigorosa padronização, assim salienta-se a necessidade de equações específicas para cada população...

The six-minute walk test (6MWT) has been considered simple, safe, easy administration, and provide representative results about normal activities of day-to-day. The objective of the study was to evaluate and compare the 6-min walk distance (6MWD) with predicted distance by reference equations available in the scientific literature in healthy elderly adults, and to verify the applicability of these reference equations in this population. Forty-three elderly adults apparently healthy (23 males) between 55 to 78 years old were assessed by means of general physical assessment, the spirometry and 6MWT. The 6MWT was performed twice, with 30-min interval between them. The 6MWD was significantly (paired t-test: p<0.05) higher than those predicted by the equations of Enright and Sherrill, Masmoudi et al., Alameri, Al-Majed and Al-Howaikan and Dourado, Vidotto and Guerra, and they were significantly lower than those provided by Troosters, Gosselink and Decramer, Gibbons et al., Enright et al., Camarri et al., Ben Saad et al. and Soares and Pereira. No significant differences were observed between the 6MWD and the predicted values by the equations of Chetta et al. and Iwama et al. Most reference equations used underestimates or overestimates the 6MWD, except of the Chetta et al., and Iwama et al. that showed acceptable to this population. There difference between the distances, even when the 6MWT is realized with similar methodology and rigorous standardization, thus emphasizes the need for specific equations for each population...

El test de marcha de seis minutos (TM6) es considerado simple, seguro y de fácil administración, además de entregar resultados representativos sobre actividades habituales del día a día. Los objetivos del estudio fueron evaluar y comparar la distancia recorrida en el TM6 con las distancias previstas por ecuaciones disponibles en la literatura científica en adultos y adultos mayores saludables del municipio de Sao Carlos/SP, y verificar la aplicabilidad de esas ecuaciones en esta población. Fueron evaluados 43 individuos (23 hombres), entre los 55 a los 78 años, por medio de evaluación física, espirometría y del TM6. Observamos que la distancia recorrida en el TM6 fue significativamente (test t-pareado: p<0,05) mayor que los valores previstos por las ecuaciones de Enright y Sherril, Masmoudi et al., Alameri, Al-Majed y Al-Howaikan y Dourado, Vidotto y Guerra, y los mismos fueron significativamente menores que los previstos por Troosters, Gosselink y Decramer, Gibbons et al., Enright et al., Camarri et al., Ben Saad et al. y Soares y Pereira. No fueron observadas diferencias significativas entre la distancia recorrida en el TM6 y los valores previstos por las ecuaciones de Chetta et al., y Iwama et al. La mayoría de las ecuaciones de referencias utilizadas en el presente estudio subestima o superestima los valores obtenidos en el TM6, excepto las propuestas por Chetta et al. y Iwama et al. que se observaron aceptables para la población estudiada. Existe diferencia entre las distancias, incluso cuando el TM6 es realizado con una similar metodología y estandarización rigurosa, además se hace hincapié en la necesidad de ecuaciones específicas para cada población...

Asunto(s)

RESUMEN

OBJECTIVE: To determine whether the quality of life of adolescents with asthma correlates with parameters obtained prior to and after the six-minute step test (6MST); spirometric results after the 6MST; and level of physical activity. METHODS: Nineteen adolescents with asthma, ranging from 11-15 years of age, were assessed with spirometry, 6MST, the International Physical Activity Questionnaire (IPAQ), the Pediatric Asthma Quality of Life Questionnaire (PAQLQ), and the 10-point Borg category-ratio (CR10) scale. RESULTS: Sensation of dyspnea correlated negatively with the total PAQLQ score (r = -0.54) and with the scores of its activity limitation (AL) and symptoms domains (r = -0.64 and r = -0.63, respectively), leg fatigue also correlating negatively with those same domains (r = -0.49 and r = -0.56, respectively). The total IPAQ score correlated with total PAQLQ score (r = 0.47) and with the PAQLQ AL domain (r = 0.51); IPAQ time spent walking correlated with the PAQLQ symptoms domain (r = 0.45); and IPAQ time spent in vigorous activity correlated with the AL domain (r = 0.50). In the regression analysis, only sensation of dyspnea remained significantly correlated with the total PAQLQ score and its AL domain; leg fatigue remained significantly correlated with the symptoms domain. CONCLUSIONS: Higher levels of physical activity indicate better quality of life, as do lower perception of dyspnea and less leg fatigue. The 6MST proved to be a viable option for evaluating exercise capacity in adolescents with asthma, because it reflects the discomfort that asthma causes during activities of daily living.

Asunto(s)

RESUMEN

OBJETIVO: Determinar se parâmetros obtidos antes e depois da realização do teste do degrau de seis minutos (TD6), respostas espirométricas após o TD6 e o nível de atividade física se correlacionam com a qualidade de vida de adolescentes asmáticos. MÉTODOS: Foram avaliados 19 adolescentes asmáticos, com idades variando de 11-15 anos, por meio de espirometria, TD6, International Physical Activity Questionnaire (IPAQ, Questionário Internacional de Atividade Física), Questionário sobre a Qualidade de Vida na Asma Pediátrica (QQVAP) e escala CR10 de Borg. RESULTADOS: Houve correlações negativas entre sensação de dispneia e pontuação total do QQVAP (r = -0,54) e de seus domínios limitação nas atividades (LA) e sintomas (r = -0,64 e r = -0,63, respectivamente), assim como entre fadiga nos membros inferiores (MMII) e os mesmos domínios (r = -0,49 e r = -0,56, respectivamente). O escore total do IPAQ correlacionou-se com a pontuação total do QQVAP (r = 0,47) e o domínio LA (r = 0,51), enquanto o tempo de caminhada correlacionou-se com o domínio sintomas (r = 0,45), e o tempo de atividade intensa correlacionou-se com o domínio LA (r = 0,50). Na análise de regressão, somente a sensação de dispneia associou-se significativamente ao escore total e o domínio limitação nas atividades do QQVAP, e o mesmo ocorreu entre a fadiga dos MMII e o domínio sintomas. CONCLUSÕES: Quanto maior for o nível de atividade física e menor for a dispneia e a fadiga nos MMII, melhor é a qualidade de vida. O TD6 mostrou-se uma opção na avaliação da capacidade ao exercício desses indivíduos por refletir o incômodo que a asma provoca na prática das atividades da vida diária.

OBJECTIVE: To determine whether the quality of life of adolescents with asthma correlates with parameters obtained prior to and after the six-minute step test (6MST); spirometric results after the 6MST; and level of physical activity. METHODS: Nineteen adolescents with asthma, ranging from 11-15 years of age, were assessed with spirometry, 6MST, the International Physical Activity Questionnaire (IPAQ), the Pediatric Asthma Quality of Life Questionnaire (PAQLQ), and the 10-point Borg category-ratio (CR10) scale. RESULTS: Sensation of dyspnea correlated negatively with the total PAQLQ score (r = -0.54) and with the scores of its activity limitation (AL) and symptoms domains (r = -0.64 and r = -0.63, respectively), leg fatigue also correlating negatively with those same domains (r = -0.49 and r = -0.56, respectively). The total IPAQ score correlated with total PAQLQ score (r = 0.47) and with the PAQLQ AL domain (r = 0.51); IPAQ time spent walking correlated with the PAQLQ symptoms domain (r = 0.45); and IPAQ time spent in vigorous activity correlated with the AL domain (r = 0.50). In the regression analysis, only sensation of dyspnea remained significantly correlated with the total PAQLQ score and its AL domain; leg fatigue remained significantly correlated with the symptoms domain. CONCLUSIONS: Higher levels of physical activity indicate better quality of life, as do lower perception of dyspnea and less leg fatigue. The 6MST proved to be a viable option for evaluating exercise capacity in adolescents with asthma, because it reflects the discomfort that asthma causes during activities of daily living.

Asunto(s)

RESUMEN

OBJECTIVES: To assess whether there is a correlation between oxygen uptake (VO2) and heart rate (HR) on-kinetics in the constant-load cycle-ergometer test (CLT) and the BODE index and its isolated variables in patients with chronic obstructive pulmonary disease (COPD). METHOD: Fourteen male patients between 55 and 78 years of age with moderate to severe COPD were evaluated. Each patient underwent spirometry, the six-minute walk test (6MWT), the cycle-ergometer incremental test (IT) and CLT on alternate days. The exhaled gases were collected, and the VO2 and HR on-kinetics were analyzed. The BODE index was calculated. RESULTS: It was noted that the VO2 tau (τ) and mean response time (MRT) were significantly higher than HR τ and MRT. Moderate and strong correlations between τ and MRT of the VO2 and HR and the BODE index was noted (r=0.75 and r=0.78; r=0.62 and r=0.63, respectively), and there were correlations between the VO2 τ and MRT and the forced expiratory volume in one second (FEV1) (r=-0.60; r=-0.53) and the distance traveled at 6MWT (DT-6MWT) (r=-0.61; r=-0.44) and DT-6MWT % predicted (r=-0.62; r=-0.46). The HR τ and MRT were correlated with DT-6MWT (r=-0.59; r=-0.58) and DT-6MWT % predicted (r=-0.62; r=-0.62). CONCLUSION: The slowing of cycle-ergometer VO2, and especially of HR on-kinetics, may be key markers of disease severity. Furthermore, airflow obstruction and reduced exercise capacity are associated with the slowing of patients' VO2 and HR on-kinetics. .

OBJETIVOS: Verificar se há correlação entre a cinética-on do consumo de oxigênio (VO2) e da frequência cardíaca (FC) no teste de carga constante em cicloergômetro (TCC) com o índice BODE e suas variáveis isoladas em pacientes com doença pulmonar obstrutiva crônica (DPOC). MÉTODO: Foram avaliados 14 homens com DPOC de obstrução moderada a muito grave, entre 55 e 78 anos, submetidos em dias alternados à espirometria, teste de caminhada de seis minutos (TC6), teste incremental em cicloergômetro (TI) e TCC. Foram coletados os gases expirados, e a cinética-on do VO2 e da FC foi analisada. O índice BODE foi calculado. RESULTADOS: Observou-se que a tau (τ) e o tempo de resposta média (TRM) do VO2 foram significativamente maiores que a τ e o TRM da FC. Observou-se correlações moderadas e fortes entre a τ e o TRM do VO2 e da FC com o índice BODE (r=0,75 e r=0,78; r=0,62 e r=0,63, respectivamente) e correlações entre a τ e o TRM do VO2 com o volume expiratório forçado no primeiro segundo (VEF1) (r=-0,60; r=-0,53), a distância percorrida no TC6 (DP-TC6) (r=-0,61; r=-0,44) e a DP-TC6 %prevista (r=-0,62; r=-0,46). A τ e o TRM da FC correlacionaram-se com a DP-TC6 (r=-0,59; r=-0,58) e a DP-TC6 %prevista (r=-0,62; r=-0,62). CONCLUSÃO: A lentificação da cinética-on do VO2 e principalmente da FC em cicloergômetro pode ser um marcador importante de gravidade da doença. Adicionalmente, a limitação ao fluxo aéreo e a reduzida capacidade ao exercício estão associadas à lentificação da cinética-on do VO2 e da FC nesses pacientes. .

Asunto(s)

RESUMEN

INTRODUÇÃO: Pacientes com Doença de Parkinson (DP) apresentam obstrução grave das vias aéreas, fadiga e incoordenação dos músculos respiratórios, redução de massa muscular e fraqueza e fadiga musculares, levando a intolerância ao exercício e piora da qualidade de vida. OBJETIVOS: Avaliar e comparar o índice de massa magra corporal (IMMC), variáveis espirométricas, força muscular respiratória e capacidade física, em pacientes com DP e idosos saudáveis. Além disso, verificar quais dessas variáveis influenciam a capacidade física de pacientes com DP. MATERIAIS E MÉTODOS: Foram avaliados 25 indivíduos, de ambos os sexos, sendo dez pacientes com DP (Grupo DP [GDP]: 72,7 ± 10,0 anos) e 15 idosos saudáveis (Grupo saudável [GS]: 64,8 ± 6,7 anos), pela espirometria, pressões inspiratória (PImáx) e expiratória máximas (PEmáx), composição corporal e do teste de caminhada de seis minutos (TC6). RESULTADOS: O GDP apresentou valores significativamente menores de relação volume expiratório forçado no primeiro segundo/capacidade vital forçada, ventilação voluntária máxima (VVM), massa muscular, PImáx, PEmáx, e distância percorrida no TC6 comparado ao GS. No GDP, observaram-se correlações positivas moderadas significativas da PEmáx e VVM com a distância percorrida no TC6 (r = 0,84; r = 0,67, respectivamente), entre o IMMC com VVM (r = 0,69). CONCLUSÃO: O GDP apresentaram redução da massa muscular, da endurance e forças musculares respiratórias, e da capacidade física, se comparados aos idosos saudáveis. Além disso, a PEmáx e a VVM influenciam a capacidade física medida pelo TC6, assim como a massa muscular influencia a endurance da musculatura respiratória nos pacientes com DP. Assim, devemos tornar o TC6 um método padrão de avaliação na prática clínica.

INTRODUCTION: Patients with Parkinson's disease (PD) have severe airway obstruction, fatigue and respiratory muscle incoordination, reduced muscle mass and muscle weakness and fatigue, leading to exercise intolerance and reduced quality of life. OBJECTIVES: To assess and compare the lean body mass index (LBMI), spirometric variables, respiratory muscle strength and physical capacity of DP patients and healthy elderly. Also, verify which of these variables influence exercise capacity in patients with PD. MATERIALS ANS METHODS: Twenty-five individuals of both sexes were evaluated: ten DP patients (PD group [PDG]: 72.7 ± 10.0 years old) and 15 healthy elderly (Healthy group [HG]: 64.8 ± 6.7 years old), through spirometry, respiratory muscle strength, body composition and 6MWT. RESULTS: The PDG presented significantly lower values, forced expiratory volume in one second/forced vital capacity, maximum voluntary ventilation (MVV), muscle mass, maximal inspiratory (MIP) and expiratory pressures (MEP) and the covered distance in the 6MWT compared to HG. In PDG, moderately positive correlations significant (p < 0.001) were observed between MEP and MVV with covered distance in the 6MWT (r = 0.84; r = 0.67, respectively), and between the LBMI with MVV (r = 0.69). CONCLUSION: The patients of PDG had reduced muscle mass, respiratory muscle strength and endurance, and of physical capacity compared to healthy elderly. Also, expiratory muscle strength and respiratory muscles endurance influence physical capacity (measured by 6MWT), as well as muscle mass influence the respiratory muscle endurance in patients with PD. This way, we have found the importance of the 6MWT to become a standard method of assessment in clinical practice in patients with DP.

Asunto(s)