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OBJECTIVE: To evaluate the effects of neuromuscular electrical stimulation of high and low frequency and intensity, performed during hemodialysis, on physical function and inflammation markers in patients with chronic kidney disease (CKD). DESIGN: Randomized clinical trial. SETTING: Hemodialysis clinic. PARTICIPANTS: Patients with CKD (N=51) were randomized into blocks of 4 using opaque sealed envelopes. They were divided into a group of high frequency and intensity neuromuscular electrical stimulation and a group of low frequency and intensity neuromuscular electrical stimulation. INTERVENTIONS: The high frequency and intensity neuromuscular electrical stimulation group was submitted to neuromuscular electrical stimulation at a frequency of 50Hz and a medium intensity of 72.90mA, and the low frequency and intensity neuromuscular electrical stimulation group used a frequency of 5Hz and a medium intensity of 13.85mA, 3 times per week for 1 hour, during 12 sessions. MAIN OUTCOME MEASURES: Peripheral muscle strength, exercise capacity, levels of muscle trophism marker (insulin growth factor 1) and levels of proinflammatory (tumor necrosis factor α) and anti-inflammatory (interleukin 10) cytokines. RESULTS: The high frequency and intensity neuromuscular electrical stimulation group showed a significant increase in right peripheral muscle strength (155.35±65.32Nm initial vs 161.60±68.73Nm final; P=.01) and left peripheral muscle strength (156.60±66.51Nm initial vs 164.10±69.76Nm final; P=.02) after the training, which did not occur in the low frequency and intensity neuromuscular electrical stimulation group for both right muscle strength (109.40±32.08Nm initial vs 112.65±38.44Nm final; P=.50) and left muscle strength (113.65±37.79Nm initial vs 116.15±43.01Nm final; P=.61). The 6-minute walk test distance (6MWTD) increased in both groups: high frequency and intensity neuromuscular electrical stimulation group (435.55±95.81m initial vs 457.25±90.64m final; P=.02) and low frequency and intensity neuromuscular electrical stimulation group (403.80±90.56m initial vs 428.90±87.42m final; P=.007). The groups did not differ in peripheral muscle strength and 6MWTD after the training protocol. In the high frequency and intensity neuromuscular electrical stimulation group, a correlation was observed between the initial and final values of 6MWTD and muscle strength. In the low frequency and intensity neuromuscular electrical stimulation group, correlations occurred only between the 6MWTD and the initial muscle strength. Only the low frequency and intensity neuromuscular electrical stimulation group increased levels of insulin growth factor 1 (252.38±156.35pg/mL initial vs 336.97±207.34pg/mL final; P=.03), and only the high frequency and intensity neuromuscular electrical stimulation group reduced levels of interleukin 10 (7.26±1.81pg/mL vs 6.32±1.54pg/mL; P=.03). The groups showed no differences in tumor necrosis factor α levels. CONCLUSIONS: Patients with CKD on hemodialysis improve exercise capacity after peripheral neuromuscular electrical stimulation of high and low frequency and intensity. However, the benefits on muscle and inflammatory outcomes seem to be specific for the adopted electrical stimulation strategy.
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Terapia por Estimulação Elétrica/métodos , Mediadores da Inflamação/metabolismo , Força Muscular/fisiologia , Músculo Esquelético/fisiologia , Diálise Renal/métodos , Insuficiência Renal Crônica/terapia , Adulto , Biomarcadores , Método Duplo-Cego , Teste de Esforço , Feminino , Humanos , Fator de Crescimento Insulin-Like I/metabolismo , Interleucina-10/metabolismo , Masculino , Pessoa de Meia-Idade , Aptidão Física , Insuficiência Renal Crônica/fisiopatologia , Fator de Necrose Tumoral alfa/metabolismoRESUMO
BACKGROUND: Fluoroscopy is considered the most accurate method to evaluate the diaphragm, yet most existing methods for measuring diaphragmatic mobility using fluoroscopy are complex. To assess the validity and reliability of a new evaluation method of diaphragmatic motion using fluoroscopy by digital radiography of healthy adults. METHODS: Twenty-six adults were evaluated, according to the parameters: anthropometry and pulmonary function test. The evaluation of diaphragm mobility by means of fluoroscopy by digital radiography method was randomly conducted by two raters (A and B). The Pearson correlation coefficient and the intraclass correlation coefficient (ICC) were used to assess the concurrent validity. The inter-rater and intra-rater reliability of the measurement of diaphragmatic motion was determined using ICC and a confidence interval of 95%. RESULTS: There was a relationship in the assessment of the concurrent validity. There was good inter-rater reliability for right hemidiaphragm mobility and moderate reliability for left hemidiaphragm in the first assessment. In the second assessment, there was good reliability for the mobility of both hemidiaphragms. There was good intra-rater reliability in the mobility of both hemidiaphragms for raters A and B. CONCLUSION: The evaluation of diaphragmatic motion using fluoroscopy by digital radiography proved to be a valid and reliable method of healthy adults.
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Diafragma/diagnóstico por imagem , Diafragma/fisiologia , Fluoroscopia/métodos , Intensificação de Imagem Radiográfica/métodos , Adulto , Brasil , Feminino , Voluntários Saudáveis , Humanos , Masculino , Variações Dependentes do Observador , Reprodutibilidade dos Testes , Testes de Função Respiratória , Adulto JovemRESUMO
BACKGROUND: Pulmonary congestion is a strong predictor of mortality and cardiovascular events in chronic kidney disease (CKD); however, the effects of the mild form on functionality have not yet been investigated. The objective of this study was to assess the influence of mild pulmonary congestion on diaphragmatic mobility (DM) and activities of daily living (ADL) in hemodialysis (HD) subjects, as well as compare ADL behavior on dialysis and non-dialysis days. In parallel, experimentally induce CKD in mice and analyze the resulting pulmonary and functional repercussions. METHODS: Thirty subjects in HD underwent thoracic and abdominal ultrasonography, anthropometric assessment, lung and kidney function, respiratory muscle strength assessment and symptoms analysis. To measure ADL a triaxial accelerometer was used over seven consecutive days. Twenty male mice were randomized in Control and CKD group. Thoracic ultrasonography, TNF-α analysis in kidney and lung tissue, exploratory behavior and functionality assessments were performed. RESULTS: Mild pulmonary congestion caused a 26.1% decline in DM (R2=.261; P=.004) and 20% reduction in walking time (R2=.200; P=.01), indicating decreases of 2.23mm and 1.54min, respectively, for every unit increase in lung comet-tails. Regarding ADL, subjects exhibited statistically significant differences for standing (P=.002), walking (P=.034) and active time (P=.002), and number of steps taken (P=.01) on days with and without HD. In the experimental model, CKD resulted in increased levels of TNF-α on kidneys (P=.037) and lungs (P=.02), attenuation of exploratory behavior (P=.01) and significant decrease in traveled distance (P=.034). Thoracic ultrasonography of CKD mice showed presence of B-lines. CONCLUSION: The mild pulmonary congestion reduced DM and walking time in subjects undergoing HD. Individuals were less active on dialysis days. Furthermore, the experimental model implies that the presence of pulmonary congestion and inflammation may play a decisive role in the low physical and exploratory performance of CKD mice.
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Edema Pulmonar , Insuficiência Renal Crônica , Humanos , Masculino , Animais , Camundongos , Atividades Cotidianas , Fator de Necrose Tumoral alfa , Pulmão/diagnóstico por imagem , Edema Pulmonar/diagnóstico , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/terapiaRESUMO
BACKGROUND: The six-minute pegboard and ring test (6-PBRT) has been used to evaluate functional capacity of the upper limbs in stable chronic obstructive pulmonary disease (COPD) patients. To the best of our knowledge, no studies have evaluated dynamic hyperinflation (DH) during exercise with upper limbs in the hospital setting. The aim of this study was to evaluate physiological responses and DH induced by 6-PBRT in hospitalized patients with acute exacerbation of COPD (AECOPD). METHODS: A cross-sectional study was conducted in a tertiary hospital enrolling patients who were hospitalized due to AECOPD. All included participants underwent an evaluation of lung function and 6-PBRT when they reached minimum clinical criteria. Ventilatory and hemodynamics parameters were monitored during 6-PBRT and until 6 minutes of rest after the test. Symptoms of dyspnea and upper limb fatigue were also measured. RESULTS: Eighteen patients (71.3±5.1 years) with a mean FEV1 of 43.2±18.3% were included in the study (11 females). Prevalence of DH after 6-PBRT was 50% (considering the drop of 150 ml or 10% of inspiratory capacity, immediately after the end of the test). There was a significant increase in respiratory rate, minute volume, dyspnea, and upper limb fatigue after the end of 6-PBRT (p<0.05). Dyspnea recovered more precociously than the perception of fatigue, being reestablished within four minutes of rest. An increase in heart rate, systolic and diastolic blood pressures was also induced by 6-PBRT (p<0.05), requiring 6 minutes of recovery to return to baseline. No adverse events were observed during 6-PBRT. We concluded that 6-PBRT induces physiological changes during its execution, at safe levels, requiring a maximum of 6 minutes for recovery. Finally, the test proved to be safe and applicable for patients hospitalized due to AECOPD.
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Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Idoso , Estudos Transversais , Feminino , Volume Expiratório Forçado/fisiologia , Hemodinâmica/fisiologia , Hospitais , Humanos , Capacidade Inspiratória/fisiologia , Masculino , Testes de Função Respiratória , Taxa Respiratória/fisiologiaRESUMO
BACKGROUND AND OBJECTIVE: Patients with COPD can have impaired diaphragm mechanics. A new method of assessing the mobility of the diaphragm, using ultrasound, has recently been validated. This study evaluated the relationship between pulmonary function and diaphragm mobility, as well as that between respiratory muscle strength and diaphragm mobility, in COPD patients. METHODS: COPD patients with pulmonary hyperinflation (n = 54) and healthy subjects (n = 20) were studied. Patients were tested for pulmonary function, maximal respiratory pressures and diaphragm mobility using ultrasound to measure the craniocaudal displacement of the left branch of the portal vein. RESULTS: COPD patients had less diaphragm mobility than did healthy individuals (36.5 +/- 10.9 mm vs 46.3 +/- 9.5 mm, P = 0.001). In COPD patients, diaphragm mobility correlated strongly with pulmonary function parameters that quantify air trapping (RV: r = -0.60, P < 0.001; RV/TLC: r = -0.76, P < 0.001), moderately with airway obstruction (FEV(1): r = 0.55, P < 0.001; airway resistance: r = -0.32, P = 0.02) and weakly with pulmonary hyperinflation (TLC: r = -0.28, P = 0.04). No relationship was observed between diaphragm mobility and respiratory muscle strength (maximal inspiratory pressure: r = -0.11, P = 0.43; maximal expiratory pressure: r = 0.03, P = 0.80). CONCLUSION: The results of this study suggest that the reduction in diaphragm mobility in COPD patients is mainly due to air trapping and is not influenced by respiratory muscle strength or pulmonary hyperinflation.
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Diafragma/fisiopatologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Mecânica Respiratória/fisiologia , Idoso , Estudos de Casos e Controles , Diafragma/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Movimento/fisiologia , Força Muscular/fisiologia , Veia Porta , Doença Pulmonar Obstrutiva Crônica/diagnóstico por imagem , Testes de Função Respiratória , Índice de Gravidade de Doença , UltrassonografiaRESUMO
OBJECTIVE: To compare diaphragmatic mobility, lung function, and respiratory muscle strength between COPD patients with and without thoracic hyperkyphosis; to determine the relationship of thoracic kyphosis angle with diaphragmatic mobility, lung function, and respiratory muscle strength in COPD patients; and to compare diaphragmatic mobility and thoracic kyphosis between male and female patients with COPD. METHODS: Participants underwent anthropometry, spirometry, thoracic kyphosis measurement, and evaluation of diaphragmatic mobility. RESULTS: A total of 34 patients with COPD participated in the study. Diaphragmatic mobility was significantly lower in the group of COPD patients with thoracic hyperkyphosis than in that of those without it (p = 0.002). There were no statistically significant differences between the two groups of COPD patients regarding lung function or respiratory muscle strength variables. There was a significant negative correlation between thoracic kyphosis angle and diaphragmatic mobility (r = -0.47; p = 0.005). In the sample as a whole, there were statistically significant differences between males and females regarding body weight (p = 0.011), height (p < 0.001), and thoracic kyphosis angle (p = 0.036); however, there were no significant differences in diaphragmatic mobility between males and females (p = 0.210). CONCLUSIONS: Diaphragmatic mobility is lower in COPD patients with thoracic hyperkyphosis than in those without it. There is a negative correlation between thoracic kyphosis angle and diaphragmatic mobility. In comparison with male patients with COPD, female patients with COPD have a significantly increased thoracic kyphosis angle.
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Diafragma/fisiopatologia , Cifose/fisiopatologia , Movimentos dos Órgãos/fisiologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Idoso , Antropometria , Estudos Transversais , Diafragma/diagnóstico por imagem , Feminino , Volume Expiratório Forçado/fisiologia , Humanos , Cifose/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Força Muscular/fisiologia , Doença Pulmonar Obstrutiva Crônica/diagnóstico por imagem , Radiografia Torácica , Músculos Respiratórios/fisiopatologia , Fatores Sexuais , Espirometria , Estatísticas não Paramétricas , Vértebras Torácicas/fisiopatologia , Capacidade Vital/fisiologiaRESUMO
OBJECTIVE: To investigate the concurrent validity, as well as the intra- and inter-rater reliability, of assessing diaphragmatic mobility by area (DMarea) on chest X-rays of healthy adults. METHODS: We evaluated anthropometric parameters, pulmonary function, and diaphragmatic mobility in 43 participants. Two observers (rater A and rater B) determined diaphragmatic mobility at two time points. We used Pearson's correlation coefficient to evaluate the correlation between DMarea and the assessment of diaphragmatic mobility by distance (DMdist). To evaluate intra- and inter-rater reliability, we used the intraclass correlation coefficient (ICC [2,1]), 95% CI, and Bland-Altman analysis. RESULTS: A significant correlation was found between the DMarea and DMdist methods (r = 0.743; p < 0.0001). For DMarea, the intra-rater reliability was found to be quite high for the right hemidiaphragm (RHD)-ICC (2,1) = 0.92 (95% CI: 0.86-0.95) for rater A and ICC (2,1) = 0.90 (95% CI: 0.84-0.94) for rater B-and the left hemidiaphragm (LHD)-ICC (2,1) = 0.96 (95% CI: 0.93-0.97) for rater A and ICC (2,1) = 0.91 (95% CI: 0.81-0.95) for rater B-(p < 0.0001 for all). Also for DMarea, the inter-rater reliability was found to be quite high for the first and second evaluations of the RHD-ICC (2,1) = 0.99 (95% CI: 0.98-0.99) and ICC (2,1) = 0.95 (95% CI: 0.86-0.97), respectively-and the LHD-ICC (2,1) = 0.99 (95% CI: 0.98-0.99) and ICC (2,1) = 0.94 (95% CI: 0.87-0.97)-(p < 0.0001 for both). The Bland-Altman analysis showed good agreement between the mobility of the RHD and that of the LHD. CONCLUSIONS: The DMarea method proved to be a valid, reliable measure of diaphragmatic mobility.
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Diafragma/diagnóstico por imagem , Diafragma/fisiologia , Adulto , Antropometria , Feminino , Volume Expiratório Forçado , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Radiografia , Valores de Referência , Reprodutibilidade dos Testes , Espirometria , Capacidade VitalRESUMO
Background: The 6-minute pegboard and ring test (6-PBRT) is a useful test for assessing the functional capacity of upper limbs in patients with stable COPD. Although 6-PBRT has been validated in stable patients, the possibility of a high floor effect could compromise the validity of the test in the hospital setting. The aim of this study was to verify the convergent validity of 6-PBRT in hospitalized patients with acute exacerbation of COPD (AECOPD). Methods: A cross-sectional study was conducted in a tertiary hospital. Patients who were hospitalized due to AECOPD and healthy elderly participants, voluntarily recruited from the community, were considered for inclusion. All participants underwent a 6-PBRT. Isokinetic evaluation to measure the strength and endurance of elbow flexors and extensors, handgrip strength (HGS), spirometry testing, the modified Pulmonary Functional Status Dyspnea Questionnaire (PFSDQ-M), the COPD assessment test (CAT), and symptoms of dyspnea and fatigue were all measured as comparisons for convergent validity. Good convergent validity was considered if >75% of these hypotheses could be confirmed (correlation coefficient>0.50). Results: A total of 17 patients with AECOPD (70.9±5.1 years and forced expiratory volume in 1 second [FEV1] of 41.8%±17.9% of predicted) and 11 healthy elderly subjects were included. The HGS showed a significant strong correlation with 6-PBRT performance (r=0.70; p=0.002). The performance in 6-PBRT presented a significant moderate correlation with elbow flexor torque peak (r=0.52; p=0.03) and elbow extensor torque peak (r=0.61; p=0.01). The total muscular work of the 15 isokinetic contractions of the elbow flexor and extensor muscles showed a significant moderate correlation with the performance in 6-PBRT (r=0.59; p=0.01 and r=0.57; p=0.02, respectively). Concerning the endurance of elbow flexors and extensors, there was a significant moderate correlation with 6-PBRT performance (r=-0.50; p=0.04 and r=-0.51; p=0.03, respectively). In relation to the upper-extremity physical activities of daily living (ADLs) assessed by means of PFSDQ-M, there was a significant moderate correlation of 6-PBRT with three domains: influence of dyspnea on ADLs (r=-0.66; p<0.001), influence of fatigue on ADLs (r=-0.60; p=0.01), and change in ADLs in relation to the period before the disease onset (r=-0.51; p=0.03). The CAT was also correlated with 6-PBRT (r=-0.51; p=0.03). Finally, the performance in 6-PBRT showed a significant moderate correlation with the increase in dyspnea (r=-0.63; p=0.01) and a strong correlation with the increase in fatigue of upper limbs (r=-0.76; p<0.001) in patients with AECOPD. Convergent validity was considered adequate, since 81% from 16 predefined hypotheses were confirmed. There was no correlation between 6-PBRT and patients' height. The performance in 6-PBRT was worse in patients with AECOPD compared to healthy elderly individuals (248.7±63.0 vs 361.6±49.9 number of moved rings; p<0.001). Conclusion: The 6-PBRT is valid for the evaluation of functional capacity of upper limbs in hospitalized patients with AECOPD.
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Força da Mão , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Extremidade Superior/fisiopatologia , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Estudos Transversais , Progressão da Doença , Dispneia/diagnóstico , Fadiga/diagnóstico , Feminino , Volume Expiratório Forçado/fisiologia , Humanos , Masculino , Reprodutibilidade dos Testes , Espirometria , Inquéritos e QuestionáriosRESUMO
Cirrhosis causes systemic and metabolic changes that culminate in various complications, such as compromised pulmonary function, ascites, hepatic encephalopathy, weight loss, and muscle weakness with significant physical function limitations. Our aim is to evaluate the effects of training with neuromuscular electrical stimulation (NMES) on the muscular and functional capacity of patients with cirrhosis classified as Child-Pugh B and C. A total of 72 patients diagnosed with cirrhosis will be recruited and randomized to perform an NMES protocol for 50 minutes, 3 times a week, for 4 weeks. The evaluations will be performed at the beginning and after 12 sessions, and patients will be submitted to a pulmonary function test, an ultrasound evaluation of the rectus femoris, an evaluation of peripheral muscle strength, a submaximal exercise capacity test associated with an evaluation of peripheral tissue oxygenation, a quality of life evaluation, and orientation about monitoring daily physical activities. The evaluators and patients will be blinded to the allocation of the groups. Training Group will be treated with the following parameters: frequency of 50 Hz, pulse width of 400 µs, rise and fall times of 2 s, and on:off 1:1; Sham Group: 5 Hz, 100 µs, on:off 1:3. The data will be analyzed using the principles of the intention to treat. This study provides health professionals with information on the benefits of this intervention. In this way, we believe that the results of this study could stimulate the use of NMES as a way of rehabilitating patients with more severe cirrhosis, with the objective of improving these patients' functional independence.
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OBJECTIVE:: To evaluate diaphragmatic mobility in relation to lung function, respiratory muscle strength, dyspnea, and physical activity in daily life (PADL) in patients with COPD. METHODS:: We included 25 patients with COPD, classified according to the Global Initiative for Chronic Obstructive Lung Disease criteria, and 25 healthy individuals. For all of the participants, the following were evaluated: anthropometric variables, spirometric parameters, respiratory muscle strength, diaphragmatic mobility (by X-ray), PADL, and the perception of dyspnea. RESULTS:: In the COPD group, diaphragmatic mobility was found to correlate with lung function variables, inspiratory muscle strength, and the perception of dyspnea, whereas it did not correlate with expiratory muscle strength or PADL. CONCLUSIONS:: In patients with COPD, diaphragmatic mobility seems to be associated with airway obstruction and lung hyperinflation, as well as with ventilatory capacity and the perception of dyspnea, although not with PADL. OBJETIVO:: Avaliar a relação da mobilidade diafragmática com a função pulmonar, força muscular respiratória, dispneia e atividade física de vida diária (AFVD) em pacientes com DPOC. MÉTODOS:: Foram avaliados 25 pacientes com diagnóstico de DPOC, classificados de acordo com critérios da Global Initiative for Chronic Obstructive Lung Disease, e 25 indivíduos saudáveis. Todos foram submetidos às seguintes avaliações: mensuração antropométrica, espirometria, força muscular respiratória, mobilidade diafragmática (por radiografia), AFVD e percepção de dispneia. RESULTADOS:: No grupo DPOC, houve correlações da mobilidade diafragmática com variáveis de função pulmonar, força muscular inspiratória e percepção de dispneia. Não houve correlações da mobilidade diafragmática com força muscular expiratória e AFVD. CONCLUSÕES:: A mobilidade diafragmática parece estar associada tanto com a obstrução das vias aéreas quanto com a hiperinsuflação pulmonar em pacientes com DPOC, assim como com a capacidade ventilatória e percepção de dispneia, mas não com AFVD.
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Diafragma/fisiologia , Dispneia/fisiopatologia , Exercício Físico/fisiologia , Força Muscular/fisiologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Atividades Cotidianas , Estudos Transversais , Diafragma/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Músculos Respiratórios/fisiologia , EspirometriaRESUMO
Abstract Introduction: Chronic kidney disease (CKD) is a global public health problem with systemic repercussions, compromising muscle function and making patients less exercise tolerant. Objective: To verify the contribution of peripheral muscle strength in the exercise capacity of patients in hemodialysis (HD), as well as to compare peripheral muscle strength and exercise capacity between renal patients and healthy individuals. Method: 50 patients with chronic kidney disease (CKD) who performed HD and 13 healthy subjects underwent anthropometric evaluation, evaluation of peripheral muscle strength, pulmonary function test and exercise capacity assessment. Results: Simple linear regression indicated that the peripheral muscle strength contributed 41.4% to the distance walked in the six-minute walk test (R2 0.414; p < 0.001), showing that for every 1 Kgf reduced in the right lower limb the patient it stops walking 0.5m while for every 1 Kgf reduced in the lower left limb the patient stops walking 0.8m. In addition, it was observed that patients with CKD had a reduction in right lower limb muscle strength (129.44 ± 48.05 vs. 169.36 ± 44.30, p = 0.002), left (136.12 ± 52, 08 vs 168.40 ± 43.35, p = 0.01) and exercise capacity (421.20 ± 98.07 vs. 611.28 ± 80.91, p < 0.001) when compared to healthy pairs. Conclusion: Peripheral muscle weakness is an important limiting factor for exercise in CKD and patients on HD experience a decline in peripheral muscle strength and exercise capacity when compared to healthy individuals.
Resumo Introdução: A doença renal crônica (DRC) é um problema de saúde pública global com repercussões sistêmicas, comprometendo a função muscular e tornando os pacientes menos tolerantes ao exercício. Objetivo: Verificar a contribuição da força muscular periférica na capacidade de exercício de pacientes em hemodiálise (HD), bem como, comparar a força muscular periférica e a capacidade de exercício entre pacientes renais e indivíduos saudáveis. Método: 50 pacientes com DRC que realizavam HD e 13 indivíduos saudáveis foram submetidos à avaliação antropométrica, avaliação da força muscular periférica, prova de função pulmonar e avaliação da capacidade de exercício. Resultados: A regressão linear simples indicou que a força muscular periférica contribuiu em 41,4% a distância percorrida no teste de caminhada de seis minutos (R2 0,414; p < 0,001), mostrando que para cada 1 Kgf reduzido no membro inferior direito o paciente deixa de caminhar 0,5m enquanto que para cada 1 Kgf reduzido no membro inferior esquerdo, o paciente deixa de caminhar 0,8m. Além disso, observou-se que pacientes com DRC apresentam redução da força muscular de membro inferior direito (129,44 ± 48,05 vs. 169,36 ± 44,30; p = 0,002), esquerdo (136,12 ± 52,08 vs. 168,40 ± 43,35; p = 0,01) e da capacidade de exercício (421,20 ± 98,07 vs. 611,28 ± 80,91; p < 0,001) quando comparados aos pares saudáveis. Conclusão: A fraqueza muscular periférica é um importante fator de limitação ao exercício na DRC. Além disso, pacientes em HD apresentam redução da força muscular periférica e da capacidade de exercício quando comparados a indivíduos saudáveis.
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Abstract Introduction: Chronic kidney disease (CKD) is defined as loss of kidney function, but its progression leads to systemic changes that compromise the quality of life of patients on dialysis. As such, the decline in lung capacity in this population may be one of the factors related to reduced peripheral muscle strength. Objective: Assess the relationship between handgrip strength (HGS), pulmonary function and respiratory muscle strength in patients with CKD on hemodialysis. Method: Thirty patients with CKD were assessed in terms of anthropometric data, pulmonary function, respiratory muscle strength and HGS. Results: A moderate association was observed between HGS and the variables forced vital capacity (r=0.54; p=0.002), maximum voluntary ventilation (r=0.51; p=0.004) and maximum expiratory pressure (r=0.59; p=0.001), and a weak association with forced expiratory volume in 1 second (FEV1) (r=0.46; p=0.009) and maximum inspiratory pressure (r=0.38; p=0.03). Additionally, about 67% of the sample (n=20) exhibited some degree of restrictive ventilatory defect in the pulmonary function test. With respect to muscle strength, 40% of the sample (n=12) displayed below-normal handgrip strength, as well as low mean MIP and MEP. Conclusion: Decreased lung capacity may be related to a decline in HGS in patients with chronic kidney disease on hemodialysis. Thus, therapeutic strategies aimed at lung expansion and respiratory muscle training may contribute to facilitating and favoring rehabilitation in this population.
Resumo Introdução: A doença renal crônica (DRC) é definida pela perda da função renal, contudo a sua progressão leva ao surgimento de alterações sistêmicas que comprometem a qualidade de vida dos pacientes em hemodiálise. Consequentemente, a redução da capacidade pulmonar nessa população pode ser um dos fatores que esteja relacionado ao declínio da força muscular periférica. Objetivo: Avaliar a relação entre a força de preensão manual (FPM) com a função pulmonar e a força muscular respiratória de pacientes com DRC em hemodiálise. Método: 30 pacientes com DRC foram avaliados quanto aos dados antropométricos, função pulmonar, força muscular respiratória e FPM. Resultados: Observou-se uma relação moderada da FPM com as variáveis capacidade vital forçada (r=0,54; p=0,002), ventilação voluntária máxima (r=0,51; p=0,004) e pressão expiratória máxima (r=0,59; p=0,001). Já as correlações entre a FPM com o volume expiratório forçado no primeiro segundo (r=0,46; p=0,009) e a pressão inspiratória máxima (r=0,38; p=0,03) foram fracas. Além disso, aproximadamente 67% da amostra (n=20) apresentou algum grau de restrição ventilatória na prova de função pulmonar. Em relação à força muscular, 40% da amostra (n=12) apresentou FPM abaixo do previsto de normalidade, e as médias da pressão inspiratória máxima e da pressão expiratória máxima em porcentagem também se encontraram reduzidas. Conclusão: A redução da capacidade pulmonar pode estar relacionada com o declínio da FPM nos pacientes com DRC em hemodiálise. Sendo assim, recursos terapêuticos visando à expansão pulmonar e o treinamento muscular respiratório podem ser estratégias para facilitar e favorecer a reabilitação dessa população.
Assuntos
Humanos , Masculino , Feminino , Diálise Renal , Insuficiência Renal Crônica , Força Muscular , Qualidade de Vida , Espirometria , Volume Expiratório Forçado , Ventilação Voluntária Máxima , Pressões Respiratórias MáximasRESUMO
Mulheres submetidas à cirurgia de mastectomia podem apresentar algumas complicações, dentre elas, alterações respiratórias e prejuízo funcional. O objetivo deste estudo foi avaliar a cinemática da parede torácica e a capacidade funcional no pós-operatório de pacientes mastectomizadas sem tratamento neoadjuvante e adjuvante associados. Foram avaliadas 4 mulheres no grupo mastectomia (GM) e 4 mulheres no grupo controle (GC). Todas as participantes foram submetidas aos procedimentos de avaliação antropométrica, função pulmonar, força muscular respiratória, cinemática da parede torácica e capacidade funcional. O GM também foi submetido à avaliação de inspeção e palpação torácica. Os dados foram analisados por meio de estatística descritiva. Foi observado que o GM apresentou menor variação de volume corrente da parede torácica, com delta de variação de 22,03% a menos que o GC, sendo a maior redução de volume corrente evidenciada no compartimento de caixa torácica pulmonar, com redução de 41,57% em relação ao GC. O GM não apresentou alterações de função pulmonar, força muscular respiratória e capacidade funcional, apresentando valores de normalidade nessas avaliações. Portanto, mulheres submetidas ao procedimento cirúrgico de mastectomia, sem tratamento neoadjuvante e adjuvante associados, não apresentaram comprometimento da função pulmonar, da força muscular respiratória e da capacidade funcional, contudo foi verificado redução do volume pulmonar na região do procedimento cirúrgico.
Women submitted to a mastectomy surgery may present some complications, among them, respiratory changes and functional impairment. The purpose of this study was to evaluate the chest wall kinematics and functional capacity in the postoperative period of mastectomized patients without associated adjuvant and neoadjuvant treatment. A total of four (4) women in the mastectomy group (MG) and four (4) in the control group (CG) were evaluated. All participants were submitted to the procedures of anthropometric evaluation, pulmonary function, respiratory muscle strength, chest wall kinematics and functional capacity. Patients in MG were also submitted to an inspection and palpation evaluation of the chest and breasts. Database was analyzed using descriptive statistics. It was observed that the MG presented a smaller variation of tidal volume of the chest wall, with a variation delta of 22.03% less than CG, with the largest reduction in tidal volume evidenced in the pulmonary chest cavity compartment, with a reduction of 41.57% when compared to CG. The MG did not present alterations of pulmonary function, respiratory muscle strength and functional capacity, presenting values of normality in these evaluations. Therefore, women submitted to the surgical procedure of mastectomy without associated neoadjuvant and adjuvant treatment did not present any impairment of pulmonary function, respiratory muscle strength and functional capacity. However, a reduction could be observed in the pulmonary volume in the region of the surgical procedure.
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Período Pós-Operatório , Testes de Função Respiratória , Mulheres/psicologia , Capacidade Residual Funcional , Mastectomia/reabilitação , Procedimentos Cirúrgicos Operatórios/reabilitação , Fenômenos Biomecânicos , Músculos Respiratórios/cirurgia , Neoplasias da Mama/cirurgia , Volume de Ventilação Pulmonar , Parede Torácica/cirurgia , Força Muscular , Caixa Torácica/cirurgiaRESUMO
Objetivo: Conhecer o perfil pulmonar, muscular e funcional de pacientes com doença renal crônica (DRC) e verificar a relação entre a força muscular periférica e a capacidade funcional desses pacientes. Métodos: 21 pacientes com DRC e 17 saudáveis foram avaliados quanto à antropometria, função pulmonar, força muscular periférica e capacidade funcional. Para comparação entres os grupos foi utilizado o teste t de Student ou U de Mann Whitney. Para correlacionar a força muscular periférica com a capacidade funcional do grupo DRC utilizou-se o coeficiente de Pearson ou Spearman. Resultados: Houve diferença estatisticamente significativa entre os grupos DRC e saudável, respectivamente, nas variáveis da função pulmonar: volume expiratório forçado no primeiro segundo (77,62 ± 18,05% vs. 99,71 ± 16,43%; p = 0,001) e capacidade vital forçada (78,86 ± 17,16% vs. 98,48 ± 16,99%; p = 0,001); e na força muscular periférica de quadríceps direito (127,76 ± 49,77 Nm vs. 170,90 ± 55,38 Nm; p = 0,006) e esquerdo (134,10 ± 55,19 Nm vs. 171,05 ± 57,86 Nm; p = 0,04). O teste de caminhada de 6 minutos foi menor no grupo DRC comparado ao saudável em valor absoluto (419,95 ± 98,51m vs. 616,90 ± 90,01m; p < 0,0001) e em % do predito (66,07 ± 15,04% vs. 94,80 ± 9,35%; p < 0,0001). Observou-se correlação moderada entre a capacidade funcional e a força muscular periférica de quadríceps direito (rho = 0,52; p = 0,01) e quadríceps esquerdo (r = 0,63; p = 0,002) no grupo DRC. Conclusão: Pacientes com DRC apresentam alteração na função pulmonar, redução da força muscular periférica e da capacidade funcional. (AU)
Objective: To study the pulmonary, muscular and functional profile of patients with chronic kidney disease (CKD) and verify the correlation between peripheral muscle strength and functional capacity of these patients. Methods: 21 patients with CKD and 17 healthy individuals were evaluated for anthropometry, pulmonary function, peripheral muscle strength and functional capacity. In the comparison between the groups, the Student t test or the Mann Whitney U test were used. Correlation of peripheral muscle strength with the functional capacity of the CKD group was tested by the Pearson or Spearman coefficient. Results: There was a statistically significant difference between the CKD and healthy groups, respectively, in the pulmonary function variables: forced expiratory volume in the first second (77.62 ± 18.05% vs. 99.71 ± 16.43%, p = 0.001) and forced vital capacity (78.86 ± 17.16% vs. 98.48 ± 16.99%, p=0.001); and right quadriceps muscle strength (127.76 ± 49.77 Nm vs. 170.90 ± 55.38 Nm, p = 0.006) and left quadriceps (134.10 ± 55.19 Nm vs. 171.05 ± 57.86 Nm; p = 0.04). The 6-minute walk test was lower in the CKD group compared to healthy in absolute values (419.95 ± 98.51 m vs. 616.90 ± 90.01 m, p < 0.0001) and in % predicted (66,07 ± 15.04% vs. 94.80 ± 9.35%, p<0.0001). There was a moderate correlation between functional capacity and muscle strength of right quadriceps (rho = 0.52, p = 0.01) and left quadriceps (r = 0.63, p = 0.002) in the CKD group. Conclusion: Patients with CKD have altered pulmonary function, reduced peripheral muscle strength and functional capacity. (AU)
Assuntos
Humanos , Espirometria , Diálise Renal , Tolerância ao Exercício , Insuficiência Renal Crônica , Força Muscular , Capacidade Pulmonar Total , Capacidade Vital , Antropometria , Volume Expiratório Forçado , Capacidade Residual FuncionalRESUMO
The aim of this study was to assess the reproducibility of the ultrasound (US) measurement of craniocaudal displacement of the left branch of the portal vein as an indirect method of measuring right hemidiaphragm mobility in healthy young adults. Forty-one healthy participants were selected, ranging from 20 to 30 years of age. The US tests were conducted and interpreted by two observers (A and B) on two separate occasions (Test 1 and Test 2). Intra-observer and interobserver reproducibility and repeatability of US measurements were determined by the intraclass correlation coefficient (ICC[2,1] ) using a 95% confidence interval (CI). Interobserver reproducibility assessment showed 'high correlation' for Test 1 and Test 2 (ICC[2,1] = 0·83, 95% CI = 0·70-0·91, and ICC[2,1] = 0·79, 95% CI = 0·61-0·89, respectively). Intra-observer reproducibility assessment showed 'moderate correlation' for observer A (ICC[2,1] = 0·69, 95% CI = 0·45-0·84) and for observer B (ICC[2,1] = 0·65, 95% CI = 0·39-0·81). Repeatability assessment showed 'high correlation' for all tests performed (ICC[2,1] = 0·86, 0·80, 0·74, 0·79, P<0·001). In conclusion, US measurement of craniocaudal displacement of the left branch of the portal vein is a reproducible method of measuring right hemidiaphragm mobility in healthy young adults.
Assuntos
Diafragma/fisiologia , Movimento , Contração Muscular , Veia Porta/diagnóstico por imagem , Adulto , Fenômenos Biomecânicos , Feminino , Humanos , Masculino , Variações Dependentes do Observador , Valor Preditivo dos Testes , Reprodutibilidade dos Testes , Ultrassonografia , Adulto JovemRESUMO
BACKGROUND: Diaphragmatic evaluation is crucial in clinical practice, and no studies have reported the intra- and interobserver reproducibilities of the radiographic method to evaluate diaphragmatic mobility. OBJECTIVE: To analyze the reliability of radiographic measurement as a method for assessing the mobility of the left and right hemidiaphragms. METHOD: Forty-two patients, who were waiting for cholecystectomy surgery, were evaluated relative to the following parameters: physical examination, pulmonary function and radiographic evaluation. The measure of mobility of each hemidiaphragm was randomly determined by two physical therapists at two different times. The intra- and interobserver reproducibilities of the measurements were determined by the intraclass correlation coefficient (ICC[2,1]) and the 95% confidence interval (CI). The Bland-Altman plot was also used. The level of significance was 5%. RESULTS: In the analysis of intra-observer reproducibility in radiographic evaluations of the left and right hemidiaphragms, ICC[2,1] indicated a "very high correlation" for both observer A (ICC[2,1] = 0.99, p <0.001 and ICC[2,1] = 0.97, p <0.001, respectively) and observer B (ICC[2,1] = 0.99, p <0.001 and ICC[2,1] = 0.99 p <0.001, respectively). In the analysis of interobserver reproducibility, the ICC[2,1] indicated a "very high correlation" for the 1st and 2nd radiographic evaluations of the right hemidiaphragm (ICC[2,1] = 0.98 and ICC[2,1] = 0,99, respectively, p <0.001) and left hemidiaphragm (ICC[2,1] = 0.98 and ICC[2,1] = 0.99, respectively, p <0.001). CONCLUSION: The intra and interobserver tests of the radiographic measure of mobility of the left and right hemidiaphragms showed high reliability.
Assuntos
Diafragma/diagnóstico por imagem , Diafragma/fisiologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Movimento , Radiografia , Reprodutibilidade dos Testes , Adulto JovemRESUMO
RESUMO Avaliar o músculo diafragma é importante para verificar suas possíveis alterações ou disfunções. Existem várias formas de avaliar a mobilidade diafragmática, mas poucos estudos que comparam a mobilidade do hemidiafragma direito com o esquerdo. O objetivo deste estudo é avaliar se existem diferenças entre a mobilidade diafragmática das hemicúpulas direita e esquerda em indivíduos saudáveis e em indivíduos com Doença Pulmonar Obstrutiva Crônica (DOCP), bem como comparar a mobilidade diafragmática entre homens e mulheres, e entre pacientes saudáveis e com DPOC. Foram avaliados 40 indivíduos saudáveis e 40 indivíduos com diagnóstico clínico de DPOC. Utilizaram-se os parâmetros antropométricos, cardiopulmonares e avaliação da mobilidade diafragmática pelo método radiográfico. Os dados foram analisados estatisticamente e tratados com análise descritiva (média e desvio-padrão) e análise inferencial. Para comparar a mobilidade das hemicúpulas diafragmáticas direita e esquerda, utilizou-se o teste t pareado. O nível de significância adotado para o tratamento estatístico foi de 5% (p<0,05). Não houve diferença da mobilidade diafragmática tanto do lado direito quanto do lado esquerdo nos indivíduos saudáveis (p=0,45) e nos indivíduos com DPOC (p=0,77), assim como não houve diferenças quando os grupos foram separados por sexo. Foi encontrada uma diferença importante comparando tanto a mobilidade diafragmática do lado direito quanto do lado esquerdo entre indivíduos saudáveis e DPOC (p<0,001). Concluiu-se que a mobilidade diafragmática das hemicúpulas direita e esquerda em indivíduos saudáveis e em indivíduos com DPOC é a mesma. Não há diferença da mobilidade entre homens e mulheres. A mobilidade diafragmática é reduzida em paciente com DPOC.
RESUMEN Evaluar el músculo diafragma es importante para certificar sus posibles alteraciones o disfunciones. Hay varias maneras de evaluar la movilidad diafragmática, sin embargo, pocos estudios que comparan la movilidad del hemidiafragma derecho con el izquierdo. El objetivo de este estudio es evaluar si hay diferencias entre la movilidad diafragmática de las hemicúpulas derecha e izquierda en individuos saludables y en individuos con Enfermedad Pulmonar Obstructiva Crónica (EPOC), así como comparar la movilidad diafragmática entre hombres y mujeres, y entre pacientes saludables y con EPOC. Fueron evaluados 40 individuos saludables y 40 individuos con diagnóstico clínico de EPOC. Se utilizaron los parámetros antropométricos, los cardiopulmonares y la evaluación de la movilidad diafragmática por el método radiográfico. Los datos fueron analizados estadísticamente y tratados con el análisis descriptivo (promedio y desviación estándar) y el análisis inferencial. Para comparar la movilidad de las hemicúpulas diafragmáticas derecha e izquierda, se utilizó la prueba t pareada. El nivel de significancia adoptado para el tratamiento estadístico fue del 5% (p<0,05). No hubo diferencia de la movilidad diafragmática tanto del lado derecho cuanto del lado izquierdo en los individuos saludables (p=0,45) y en los individuos con EPOC (p=0,77), así como no hubo diferencias cuando los grupos fueron separados por sexo. Fue encontrada una diferencia importante comparando tanto la movilidad diafragmática del lado derecho cuanto del lado izquierdo entre individuos saludables y EPOC (p<0,001). Se concluyó que la movilidad diafragmática de las hemicúpulas derecha e izquierda en individuos saludables y en individuos con EPOC es la misma. No hay diferencia de la movilidad entre hombres y mujeres. La movilidad diafragmática es reducida en paciente con EPOC.
ABSTRACT To evaluate the diaphragm muscle is important for verifying its possible changes or malfunctions. There are several ways to evaluate the diaphragmatic mobility, but only a few compare the mobility of the right hemidiaphragm with the left one. The aim of this study was to evaluate whether there are differences between the mobility of right and left hemidiaphragms in healthy individuals and individuals with chronic obstructive pulmonary disease (COPD), as well as to evaluate the diaphragmatic mobility between men and women, and between healthy and COPD patients. We evaluated 40 healthy individuals and 40 individuals with clinical diagnosis of COPD. Anthropometric and cardiopulmonary parameters were used. The diaphragmatic mobility was evaluated by radiography. Data were statistically analyzed and processed with descriptive analysis (mean and standard deviation) and inferential analysis. To compare the mobilities of the right and left hemidiaphragms, the paired t-test was used. The significance level adopted for statistical treatment was 5% (p<0.05). There was no difference of the diaphragmatic mobility for both left and right sides in healthy individuals (p=0.45) and individuals with COPD (p=0.77). Also, no differences were found when groups were separated according to sex. An important difference was found comparing both diaphragmatic mobilities of the right and left sides between healthy and COPD individuals (p<0.001). We concluded that mobility of left and right hemidiaphragms in healthy and COPD individuals is the same. There is no difference for mobility between men and women. Diaphragmatic mobility is reduced in COPD patients.
RESUMO
ABSTRACT Objective: To investigate the concurrent validity, as well as the intra- and inter-rater reliability, of assessing diaphragmatic mobility by area (DMarea) on chest X-rays of healthy adults. Methods: We evaluated anthropometric parameters, pulmonary function, and diaphragmatic mobility in 43 participants. Two observers (rater A and rater B) determined diaphragmatic mobility at two time points. We used Pearson's correlation coefficient to evaluate the correlation between DMarea and the assessment of diaphragmatic mobility by distance (DMdist). To evaluate intra- and inter-rater reliability, we used the intraclass correlation coefficient (ICC [2,1]), 95% CI, and Bland-Altman analysis. Results: A significant correlation was found between the DMarea and DMdist methods (r = 0.743; p < 0.0001). For DMarea, the intra-rater reliability was found to be quite high for the right hemidiaphragm (RHD)-ICC (2,1) = 0.92 (95% CI: 0.86-0.95) for rater A and ICC (2,1) = 0.90 (95% CI: 0.84-0.94) for rater B-and the left hemidiaphragm (LHD)-ICC (2,1) = 0.96 (95% CI: 0.93-0.97) for rater A and ICC (2,1) = 0.91 (95% CI: 0.81-0.95) for rater B-(p < 0.0001 for all). Also for DMarea, the inter-rater reliability was found to be quite high for the first and second evaluations of the RHD-ICC (2,1) = 0.99 (95% CI: 0.98-0.99) and ICC (2,1) = 0.95 (95% CI: 0.86-0.97), respectively-and the LHD-ICC (2,1) = 0.99 (95% CI: 0.98-0.99) and ICC (2,1) = 0.94 (95% CI: 0.87-0.97)-(p < 0.0001 for both). The Bland-Altman analysis showed good agreement between the mobility of the RHD and that of the LHD. Conclusions: The DMarea method proved to be a valid, reliable measure of diaphragmatic mobility.
RESUMO Objetivo: Avaliar a validade concorrente, assim como a confiabilidade intra e interobservador, da avaliação da mobilidade diafragmática pelo método da área radiográfica (MDárea) em adultos saudáveis. Métodos: Foram avaliados os parâmetros antropométricos, a função pulmonar e a mobilidade diafragmática de 43 participantes. A mobilidade diafragmática foi determinada por dois observadores (A e B) em dois momentos distintos. O coeficiente de correlação de Pearson foi utilizado para avaliar a correlação entre o método da MDárea e o método por distância (MDdist). Para avaliar a confiabilidade intra e interobservador, foi utilizado o coeficiente de correlação intraclasse (CCI [2,1]), IC95% e a disposição gráfica de Bland & Altman. Resultados: Houve uma correlação significativa entre MDárea e MDdist (r = 0,743; p < 0,0001). Para MDárea, a confiabilidade intraobservador foi alta para a avaliação radiográfica do hemidiafragma direito (HDD) - CCI (2,1) = 0,92 (IC95%: 0,86-0,95) para o observador A e CCI (2,1) = 0,90 (IC95%: 0,84-0,94) para o observador B - e do hemidiafragma esquerdo (HDE) - CCI (2,1) = 0,96 (IC95%: 0,93-0,97) para o observador A e CCI (2,1) = 0,91 (IC95%: 0,81-0,95 para o observador B (p < 0,0001 para todos). Também para MDárea, a confiabilidade interobservador foi alta para a primeira e segunda avaliações do HDD - CCI (2,1) = 0,99 (IC95%: 0,98-0,99) e CCI (2,1) = 0,95 (IC95%: 0,86-0,97), respectivamente - e HDE - CCI (2,1) = 0,94 (IC95%: 0,87-0,97) e CCI (2,1) = 0,94 (IC95%: 0,87-0,97), respectivamente - (p < 0,0001 para ambos). A disposição gráfica de Bland & Altman mostrou uma boa concordância entre as medidas de mobilidade de HDD e HDE. Conclusões: O método de MDárea demonstrou ser válido e reprodutível para medir a mobilidade diafragmática.
Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Diafragma/fisiologia , Diafragma/diagnóstico por imagem , Valores de Referência , Espirometria , Radiografia , Variações Dependentes do Observador , Capacidade Vital , Antropometria , Volume Expiratório Forçado , Reprodutibilidade dos TestesRESUMO
ABSTRACT Objective: To compare diaphragmatic mobility, lung function, and respiratory muscle strength between COPD patients with and without thoracic hyperkyphosis; to determine the relationship of thoracic kyphosis angle with diaphragmatic mobility, lung function, and respiratory muscle strength in COPD patients; and to compare diaphragmatic mobility and thoracic kyphosis between male and female patients with COPD. Methods: Participants underwent anthropometry, spirometry, thoracic kyphosis measurement, and evaluation of diaphragmatic mobility. Results: A total of 34 patients with COPD participated in the study. Diaphragmatic mobility was significantly lower in the group of COPD patients with thoracic hyperkyphosis than in that of those without it (p = 0.002). There were no statistically significant differences between the two groups of COPD patients regarding lung function or respiratory muscle strength variables. There was a significant negative correlation between thoracic kyphosis angle and diaphragmatic mobility (r = −0.47; p = 0.005). In the sample as a whole, there were statistically significant differences between males and females regarding body weight (p = 0.011), height (p < 0.001), and thoracic kyphosis angle (p = 0.036); however, there were no significant differences in diaphragmatic mobility between males and females (p = 0.210). Conclusions: Diaphragmatic mobility is lower in COPD patients with thoracic hyperkyphosis than in those without it. There is a negative correlation between thoracic kyphosis angle and diaphragmatic mobility. In comparison with male patients with COPD, female patients with COPD have a significantly increased thoracic kyphosis angle.
RESUMO Objetivo: Comparar a mobilidade diafragmática, a função pulmonar e a força muscular respiratória em pacientes que apresentam DPOC com e sem hipercifose torácica; verificar a relação do ângulo da curvatura torácica com a mobilidade diafragmática, variáveis da função pulmonar e de força muscular respiratória dos pacientes com DPOC; e comparar a mobilidade diafragmática e a cifose torácica entre os gêneros nesses pacientes. Métodos: Foram realizadas as seguintes avaliações: antropometria, espirometria, mensuração do ângulo da curvatura torácica e mobilidade diafragmática. Resultados: Participaram do estudo 34 pacientes com DPOC. No grupo de pacientes com DPOC e hipercifose torácica, a mobilidade diafragmática foi estatisticamente menor quando comparada à do grupo DPOC sem hipercifose torácica (p = 0,002). Não houve diferenças estatisticamente significantes entre esses grupos em relação a variáveis de função pulmonar e de força muscular respiratória. Houve uma correlação negativa significante entre o ângulo da curvatura torácica e a mobilidade diafragmática (r = −0,47; p = 0,005). Quando comparados homens e mulheres da amostra geral, houve diferenças estatisticamente significantes em relação à massa corpórea (p = 0,011), estatura (p < 0,001) e ângulo da curvatura da cifose torácica (p = 0,036), mas não em relação à mobilidade diafragmática (p = 0,210). Conclusões: Os pacientes com DPOC e hipercifose torácica apresentaram menor mobilidade diafragmática quando comparados com os pacientes com DPOC sem hipercifose torácica. O ângulo da curvatura torácica se correlacionou negativamente com a mobilidade diafragmática. O grupo feminino apresentou um aumento significante no ângulo da curvatura torácica quando comparado ao grupo masculino.
Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Diafragma/fisiopatologia , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Movimentos dos Órgãos/fisiologia , Cifose/fisiopatologia , Espirometria , Vértebras Torácicas/fisiopatologia , Músculos Respiratórios/fisiopatologia , Diafragma/diagnóstico por imagem , Radiografia Torácica , Fatores Sexuais , Capacidade Vital/fisiologia , Antropometria , Volume Expiratório Forçado/fisiologia , Estudos Transversais , Estatísticas não Paramétricas , Doença Pulmonar Obstrutiva Crônica/diagnóstico por imagem , Força Muscular/fisiologia , Cifose/diagnóstico por imagemRESUMO
OBJECTIVE: To evaluate the magnitude of diurnal changes in the parameters of pulmonary function and respiratory muscle strength/endurance in a sample of patients with COPD. METHODS: A group of 7 patients underwent spirometry, together with determination of MIP and MEP, at two distinct times (between 8:00 and 8:30 a.m. and between 4:30 and 5:00 p.m.) on a single day. Between assessments, the patients remained at rest in the laboratory. RESULTS: In accordance with the Global Initiative for Chronic Obstructive Pulmonary Disease staging system, COPD was classified as moderate, severe, and very severe in 1, 3, and 3 of the patients, respectively. From the first to the second assessment, there were significant decreases in FVC, FEV1, and MEP (of 13%, 15%, and 10%, respectively), as well as (less than significant) decreases in PEF, MIP, and maximal voluntary ventilation (of 9%, 3%, and 11%, respectively). CONCLUSIONS: In this sample of COPD patients, there were diurnal variations in the parameters of pulmonary function and respiratory muscle strength. The values of FEV1, FVC, and MEP were significantly lower in the afternoon than in the morning.