INTRODUÇÃO: Os efeitos do envelhecimento no sistema respiratório iniciam-se aproximadamente aos 25 anos de idade e leva a diminuição da função máxima deste sistema. Esta diminuição de função é perceptível sobre os volumes e capacidades pulmonar, sobre a força dos músculos respiratórios e do fluxo aéreo, predispondo o idoso a complicações que podem resultar em internações e até em morte. A massa e a força muscular reduzida já é bem estudada nesta população, porém com poucos estudos investigando a relação com a função respiratória. OBJETIVO: Avaliar a relação entre força muscular respiratória e força de preensão palmar em idosos institucionalizados e da comunidade. MÉTODO: Caracteriza-se por um estudo transversal com 64 voluntários, sendo 33 institucionalizado (GI) e 31 da comunidade (GC). Foram avaliados a pressão inspiratória máxima (PImax), pressão expiratória máxima (PEmax), pico de fluxo expiratório (PF), força de preensão palmar dominante (FPP D) e não dominante (FPP ND), dados antropométricos e nível de atividade física (IPAQ curto). Os dados foram submetidos a análise estatística através do teste t student para amostras independentes para comparação entre os grupos, análise de covariância (ANCOVA) controlada pela covariável idade para as variáveis respiratórias e para a força de preensão palmar, teste de Pearson para avaliação da correlação das variáveis e a análise de regressão linear para identificação da influência das variáveis respiratórias sobre a FPP, além da correção de Bonferroni para excluir o erro do tipo I. RESULTADOS: Os valores encontrados nos testes respiratórios e de força entre os grupos, diferiram estatisticamente mesmo controlado pela covariável idade, sendo que o GI apresentou valores inferiores ao GC. No GI não encontramos correlação entre as variáveis respiratórias e as de FPP, porém o preditor respiratório mais fortemente associado à FPP D foi a PEmax (p=0,04). No GC verificou-se correlação entre PImax e FPP D (r=0,539), PEmax e FPP D / ND (r=0,62 / 0,6), PF e FPP D / ND (r=0,64 / 0,43) e o preditor respiratório mais fortemente associado à FPP D foi PF (p=0,009) e PEmax (p=0,028) e para FPP ND foi a PEmax (p=0,021). Na análise conjunta dos grupos verificou-se associação entre PImax e FPP D / ND (r=0,40 / 0,41), PEmax e FPP D / ND (r=0,57 / 0,54), PF e FPP D / ND (r=0,57 / 0,47) e o preditor respiratório mais fortemente associado à FPP D foi PF (p=0,01) e PEmax (p=0,03) e para FPP ND foi a PEmax (p=0,008) e PF (p=0,041). CONCLUSÃO: O GI apresenta maior fraqueza da musculatura respiratória e estas variáveis não se relacionam bem com a FPP. Em idosos da comunidade o PF e a PEmax parecem ser um bom preditor para a FPP / INTRODUCTION: The effects of aging on the respiratory system begin at approximately 25 years of age and lead to a decrease in the maximum function of this system. This diminished function is noticeable on lung volumes and capacities, on respiratory muscle strength and airflow, predisposing the elderly to complications that may result in hospitalization and even death. The mass and reduced muscle strength is already well studied in this population, but with few studies investigating the relation with the respiratory function. OBJECTIVE: To evaluate the relationship between respiratory muscle strength and palmar grip strength in institutionalized and community aged individuals. METHOD: It is characterized by a cross-sectional study with 64 volunteers, being institutionalized 33 (GI) and 31 from the community (GC). The maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), peak expiratory flow (PF), dominant palmar grip strength (FPP D) and non-dominant (FPP ND), anthropometric data and level of physical activity (short IPAQ). The data were submitted to statistical analysis through t Student test for independent samples for comparison between groups, covariance analysis (ANCOVA) controlled by covariate age for respiratory variables and for palmar grip strength, Pearson test for correlation evaluation of the variables and the linear regression analysis to identify the influence of the respiratory variables on the FPP, besides the Bonferroni correction to exclude the type I error. RESULTS: The values found in the respiratory and strength tests between the groups, differed statistically even by the covariable age, and the GI presented values lower than the GC. In GI, we found no correlation between respiratory and FPP variables, but the respiratory predictor most strongly associated with FPP D was the PEmax (p = 0.04). In the CG, correlation was found between PImax and FPP D (r = 0.539), PEmax and FPP D / ND (r = 0.62 / 0.6), PF and FPP D / ND (r = 0.64 / 0, 43) and the respiratory predictor most strongly associated with FPP D was PF (p = 0.009) and PEmax (p = 0.028) and for FPP ND was PEmax (p = 0.021). In the joint analysis of the groups, an association between PImax and FPP D / ND (r = 0.40 / 0,41), PEmax and FPP D / ND (r = 0.57 / 0.54), FP and FPP D (P = 0.01) and PEmax (p = 0.03) and for FPP ND it was the PEmax (p = 0.07) and ND (r = 0.57 / 0.47) and the respiratory predictor most strongly associated with FPP D = 0.008) and PF (p = 0.041). CONCLUSION: GI shows greater respiratory muscle weakness and these variables do not correlate well with PPF. In the elderly in the community, PF and PEmax appear to be a good predictor of PPF

INTRODUÇÃO: Os efeitos do envelhecimento no sistema respiratório iniciam-se aproximadamente aos 25 anos de idade e leva a diminuição da função máxima deste sistema. Esta diminuição de função é perceptível sobre os volumes e capacidades pulmonar, sobre a força dos músculos respiratórios e do fluxo aéreo, predispondo o idoso a complicações que podem resultar em internações e até em morte. A massa e a força muscular reduzida já é bem estudada nesta população, porém com poucos estudos investigando a relação com a função respiratória. OBJETIVO: Avaliar a relação entre força muscular respiratória e força de preensão palmar em idosos institucionalizados e da comunidade. MÉTODO: Caracteriza-se por um estudo transversal com 64 voluntários, sendo 33 institucionalizado (GI) e 31 da comunidade (GC). Foram avaliados a pressão inspiratória máxima (PImax), pressão expiratória máxima (PEmax), pico de fluxo expiratório (PF), força de preensão palmar dominante (FPP D) e não dominante (FPP ND), dados antropométricos e nível de atividade física (IPAQ curto). Os dados foram submetidos a análise estatística através do teste t student para amostras independentes para comparação entre os grupos, análise de covariância (ANCOVA) controlada pela covariável idade para as variáveis respiratórias e para a força de preensão palmar, teste de Pearson para avaliação da correlação das variáveis e a análise de regressão linear para identificação da influência das variáveis respiratórias sobre a FPP, além da correção de Bonferroni para excluir o erro do tipo I. RESULTADOS: Os valores encontrados nos testes respiratórios e de força entre os grupos, diferiram estatisticamente mesmo controlado pela covariável idade, sendo que o GI apresentou valores inferiores ao GC. No GI não encontramos correlação entre as variáveis respiratórias e as de FPP, porém o preditor respiratório mais fortemente associado à FPP D foi a PEmax (p=0,04). No GC verificou-se correlação entre PImax e FPP D (r=0,539), PEmax e FPP D / ND (r=0,62 / 0,6), PF e FPP D / ND (r=0,64 / 0,43) e o preditor respiratório mais fortemente associado à FPP D foi PF (p=0,009) e PEmax (p=0,028) e para FPP ND foi a PEmax (p=0,021). Na análise conjunta dos grupos verificou-se associação entre PImax e FPP D / ND (r=0,40 / 0,41), PEmax e FPP D / ND (r=0,57 / 0,54), PF e FPP D / ND (r=0,57 / 0,47) e o preditor respiratório mais fortemente associado à FPP D foi PF (p=0,01) e PEmax (p=0,03) e para FPP ND foi a PEmax (p=0,008) e PF (p=0,041). CONCLUSÃO: O GI apresenta maior fraqueza da musculatura respiratória e estas variáveis não se relacionam bem com a FPP. Em idosos da comunidade o PF e a PEmax parecem ser um bom preditor para a FPP / INTRODUCTION: The effects of aging on the respiratory system begin at approximately 25 years of age and lead to a decrease in the maximum function of this system. This diminished function is noticeable on lung volumes and capacities, on respiratory muscle strength and airflow, predisposing the elderly to complications that may result in hospitalization and even death. The mass and reduced muscle strength is already well studied in this population, but with few studies investigating the relation with the respiratory function. OBJECTIVE: To evaluate the relationship between respiratory muscle strength and palmar grip strength in institutionalized and community aged individuals. METHOD: It is characterized by a cross-sectional study with 64 volunteers, being institutionalized 33 (GI) and 31 from the community (GC). The maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), peak expiratory flow (PF), dominant palmar grip strength (FPP D) and non-dominant (FPP ND), anthropometric data and level of physical activity (short IPAQ). The data were submitted to statistical analysis through t Student test for independent samples for comparison between groups, covariance analysis (ANCOVA) controlled by covariate age for respiratory variables and for palmar grip strength, Pearson test for correlation evaluation of the variables and the linear regression analysis to identify the influence of the respiratory variables on the FPP, besides the Bonferroni correction to exclude the type I error. RESULTS: The values found in the respiratory and strength tests between the groups, differed statistically even by the covariable age, and the GI presented values lower than the GC. In GI, we found no correlation between respiratory and FPP variables, but the respiratory predictor most strongly associated with FPP D was the PEmax (p = 0.04). In the CG, correlation was found between PImax and FPP D (r = 0.539), PEmax and FPP D / ND (r = 0.62 / 0.6), PF and FPP D / ND (r = 0.64 / 0, 43) and the respiratory predictor most strongly associated with FPP D was PF (p = 0.009) and PEmax (p = 0.028) and for FPP ND was PEmax (p = 0.021). In the joint analysis of the groups, an association between PImax and FPP D / ND (r = 0.40 / 0,41), PEmax and FPP D / ND (r = 0.57 / 0.54), FP and FPP D (P = 0.01) and PEmax (p = 0.03) and for FPP ND it was the PEmax (p = 0.07) and ND (r = 0.57 / 0.47) and the respiratory predictor most strongly associated with FPP D = 0.008) and PF (p = 0.041). CONCLUSION: GI shows greater respiratory muscle weakness and these variables do not correlate well with PPF. In the elderly in the community, PF and PEmax appear to be a good predictor of PPF

Made available in DSpace on 2015-07-22T20:50:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-24 / Objetivo: O objetivo deste estudo foi avaliar a força dos músculos respiratórios em crianças e adolescentes com asma pela mensuração das pressões respiratórias máximas e compará-las às observadas com indivíduos controles com mesmas características antropométricas. Métodos: Estudo transversal, em que foram realizadas medidas antropométricas (peso, estatura e perímetro braquial), provas de função pulmonar e medida das pressões respiratórias máximas inspiratória (Pimáx) e expiratória (Pemáx) de pacientes com asma e controles saudáveis com idades entre 6 e 16 anos, independentemente do sexo. Resultados: Foram avaliadas as pressões respiratórias máximas de 75 indivíduos asmáticos e 90 saudáveis (controles), de ambos os gêneros, divididos por idade cronológica em crianças e adolescentes. Os grupos apresentaram características antropométricas semelhantes. Não houve diferença estatisticamente significante nos valores de Pimáx e Pemáx (p>0,05) entre asmáticos e saudáveis. Não houve diferença estatisticamente significativa entre as pressões máximas dos asmáticos do gênero masculino e feminino. No grupo controle a Pemáx foi maior no gênero masculino (p=0,004). Nos dois grupos (asmáticos e controles) os adolescentes apresentaram valores de pressões respiratórias máximas maiores que as crianças. Houve fraca correlação entre o VEF1 e a Pimax (r=0,247) e moderada entre o VEF1 e a Pemax (r=0,385) dos indivíduos asmáticos, porém, a Pemáx foi maior nos adolescentes com maior gravidade da doença. As pressões respiratórias máximas não foram afetadas pela condição nutricional dos indivíduos avaliados. Conclusão: A ocorrência de asma não determinou alterações significativas na força dos músculos respiratórios de crianças e adolescentes independente do gênero. Porém, a maior gravidade da doença pode estar associada a um incremento da força dos músculos expiratórios de adolescentes com asma provavelmente pelo recrutamento exacerbado a que as fibras destes músculos são frequentemente submetidas nos períodos de crise sendo maior nos do sexo masculino, o que pode estar associado a maior área muscular frequente nos garotos. / Objective: The objective of this study was to evaluate the strength of respiratory muscles in children and adolescents with asthma by measurement of maximal respiratory pressures and compare them with those observed in control subjects with the same anthropometric characteristics. Methods: Cross-sectional study, which included anthropometric measures (weight, height and arm circumference), pulmonary function tests and measurement of maximal respiratory pressures inspiratory (MIP) and expiratory (MEP) of patients whith asthma and healthy controls aged between 6 and 16 years, regardless of gender. Results: We evaluated the maximal respiratory pressure of 75 asthmatics and 90 healthy individuals (controls) of both sexes, divided by chronological age in children and adolescents. The groups had similar physical characteristics. There was no statistically significant difference in the values of MIP and MEP (p> 0.05) between asthmatics and healthy. There was no statistically significant difference between the maximum pressure of asthmatic males and females. In the control group, MEP was higher in males (p = 0.004). Both groups (asthmatics and controls) adolescents have higher values of maximal respiratory pressures higher than children. There was a weak correlation between FEV1 and MIP (r = 0.247) and moderate between FEV1 and MEP (r = 0.385) of asthma patients, however, the MEP was higher in adolescents with more severe disease. Maximal respiratory pressures were not affected by the nutritional condition of individuals evaluated. Conclusion: The incidence of asthma do not determinate significant alterations in respiratory muscle strength in children and adolescents, regardless of gender. However, the severity of the disease may be associated with an increase in expiratory muscle strength in adolescents with asthma probably by the exacerbated recruitment to the fibers of these muscles are often subjected during periods of crisis is higher in males, which may be associated with greater muscle area common in boys. / TEDE / BV UNIFESP: Teses e dissertações

Background: Breathing exercises are widely used after cardiac surgery. The duration of exercises in the immediate postoperative period is not fully evaluated and only limited data regarding the effects of home-based breathing exercises after discharge from hospital have been published. Aim: The overall aim of this thesis was to evaluate the effects of deep breathing exercises with positive expiratory pressure (PEP) and describe lung function and respiratory muscle strength in patients undergoing cardiac surgery. Participants and settings: Adult participants (n=131) were randomised to perform either 30 or 10 deep breaths with PEP per hour during the first postoperative days (Study I): the main outcome was oxygenation, assessed by arterial blood gases, on the second postoperative day. In Study III, 313 adult participants were randomly assigned to perform home-based deep breathing exercises with PEP for two months after surgery or not to perform breathing exercises with PEP after the fourth to fifth postoperative day. The main outcome was lung function, assessed by spirometry, two months after surgery. Studies II and IV were descriptive and correlative and investigated pre and postoperative lung function, assessed by spirometry, and respiratory muscle strength, assessed by maximal inspiratory pressure, and maximal expiratory pressure. Results: On the second postoperative day, arterial oxygen tension (PaO2) and arterial oxygen saturation (SaO2) was higher in the group randomised to 30 deep breaths with PEP hourly. There was no improved recovery of lung function in participants performing home-based deep breathing exercises two months after cardiac surgery, compared to a control group. Subjective experience of breathing or improvement in patient perceived quality of recovery or health-related quality of life did not differ between the groups at two months. Lung function and respiratory muscle strength were in accordance with predicted values before surgery. A 50% reduction in lung function was shown on the second postoperative day. High body mass index, male gender and sternal pain were associated with decreased lung function on the second postoperative day. Two months postoperatively, there was decreased lung function, but respiratory muscle strength had almost recovered to preoperative values. / <p></p><p></p>

Submitted by Izabel Franco (izabel-franco@ufscar.br) on 2016-09-27T20:19:19Z No. of bitstreams: 1 DissMF.pdf: 1690143 bytes, checksum: 926071d3df13b9586913717047c129c9 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-10T19:00:59Z (GMT) No. of bitstreams: 1 DissMF.pdf: 1690143 bytes, checksum: 926071d3df13b9586913717047c129c9 (MD5) / Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-10T19:01:11Z (GMT) No. of bitstreams: 1 DissMF.pdf: 1690143 bytes, checksum: 926071d3df13b9586913717047c129c9 (MD5) / Made available in DSpace on 2016-10-10T19:01:21Z (GMT). No. of bitstreams: 1 DissMF.pdf: 1690143 bytes, checksum: 926071d3df13b9586913717047c129c9 (MD5) Previous issue date: 2015-05-29 / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / The fibromyalgia syndrome (FMS) is a rheumatologic condition characterized by non-inflammatory widespread chronic pain and tender points in specific anatomic locations. In addition to the pain symptoms, FMS is also associated with the presence of a variety of symptoms such as fatigue and dyspnea, which has called attention to the review of the respiratory system in women with FMS. Thus, this work consisted of two studies aiming to elucidate the unknown aspects related to the respiratory system of women with FMS. The Study I, entitled "Pulmonary function, respiratory muscle strength and thoracoabdominal mobility in women with fibromyalgia syndrome: association with clinical manifestations", aimed to evaluate lung function, respiratory muscle strength and thoracoabdominal mobility as well as to assess possible associations of respiratory variables with clinical manifestations in women with FMS. The results show that the FMS group in this study has lower respiratory muscle endurance, inspiratory muscle strength and thoracic mobility compared to healthy participants. In addition, the study demonstrated that the lower inspiratory muscle strength, the greater the number of tender points and fatigue and lower axillary mobility. The Study II, entitled "Influence aerobic hydrotherapy program on lung function, respiratory muscle strength and thoracoabdominal mobility in women with fibromyalgia syndrome: a randomized controlled trial", aimed to evaluate the influence of an aerobic hydrotherapy program on respiratory variables and clinical manifestations in women with FMS and assess the association between respiratory variables and clinical manifestations. The results show that a 16-week aerobic hydrotherapy program increased the slow vital capacity, the forced vital capacity, the inspiratory muscle strength, the thoracic mobility, the pressure pain threshold, well-being, and decreased pain, and limitations caused by physical aspects. Clinical improvement was not associated with the respiratory variables. Conclusion: The subjects with FMS had lower respiratory muscle endurance, inspiratory muscle strength and thoracic mobility compared to healthy subjects. In addition, a 16-week aerobic hydrotherapy program showed to be effective in ameliorating lung function, inspiratory muscle strength, thoracic mobility, pressure pain threshold, well-being, pain and limitations caused by physical aspects. However, clinical improvement of FMS symptoms was not associated with the improvement of respiratory variables. / A síndrome fibromiálgica (SFM) é uma condição reumatológica, caracterizada por dor crônica difusa não inflamatória e tender points em locais anatômicos específicos. Além do quadro doloroso, a SFM também está associada à presença de uma variedade de sintomas como a fadiga e a dispneia, os quais têm chamado a atenção para a avaliação do sistema respiratório em mulheres com SFM. Assim, essa dissertação foi composta por dois estudos com o intuito de elucidar os aspectos desconhecidos relacionados ao sistema respiratório de mulheres com SFM. O Estudo I, intitulado “Função pulmonar, força muscular respiratória e mobilidade tóracoabdominal em mulheres com síndrome fibromiálgica: associação com as manifestações clínicas”, teve como objetivo avaliar a função pulmonar, a força muscular respiratória e a mobilidade tóracoabdominal, bem como avaliar as possíveis associações das variáveis respiratórias com as manifestações clinicas em mulheres com SFM. Os resultados mostram que as voluntárias do grupo SFM estudadas apresentam menor endurance muscular respiratória, força muscular inspiratória e mobilidade torácica em relação às voluntárias saudáveis. Além disso, o estudo revelou que quanto menor a força muscular inspiratória, maior o número de tender points ativos e fadiga e menor a mobilidade axilar. O Estudo II, intitulado “Influência de um programa de hidroterapia aeróbio sobre a função pulmonar, força muscular respiratória e mobilidade tóracoabdominal em mulheres com síndrome fibromiálgica: ensaio clínico randomizado controlado”, teve como objetivo avaliar a influência de um programa de hidroterapia aeróbio sobre variáveis respiratórias e manifestações clínicas em mulheres com SFM, bem como avaliar a associação entre as variáveis respiratórias com as manifestações clínicas. Os resultados mostram que o programa de hidroterapia aeróbio de 16 semanas aumentou a capacidade vital lenta, a capacidade vital forçada, a força muscular inspiratória, a mobilidade torácica, o limiar de dor à pressão e o bem-estar, e reduziu a dor e a limitação por aspectos físicos. A melhora clínica não apresentou associação com as variáveis respiratórias. Conclusão: As voluntárias com SFM apresentam menor endurance muscular respiratória, força muscular inspiratória e mobilidade torácica em relação às voluntárias saudáveis. Além disso, um programa de hidroterapia aeróbio de 16 semanas promoveu melhora da função pulmonar, da força muscular inspiratória, da mobilidade torácica, do limiar de dor à pressão, do bem-estar, da dor e da limitação por aspectos físicos. No entanto, a melhora clínica da SFM não apresentou associação com a melhora das variáveis respiratórias.

Thesis (PhD (Sport Science))--Stellenbosch University, 2008. / The aims of this study were (1) to determine the effect of concurrent respiratory muscle training (RMT) on respiratory muscle (RM) function and aerobic exercise performance in women competitive field hockey players, (2) to determine the effect and time duration of RM detraining on RM function in those who underwent RMT, and (3) to determine the predictors of RM strength and endurance in an athletic population. Twenty two women hockey players underwent a series of kinanthropometric and respiratory muscle function measurements, and were then randomly assigned to an experimental group (EXP, n = 15) who underwent concurrent RMT, and a control group (CON, n = 7) who underwent sham training. Twenty subjects took part in the RM detraining study. Significant improvements in pulmonary function and RM endurance (5 – 9%) were found in both groups after the HT-RMT and HT-ST interventions, while EXP also showed a significant improvement in RM strength variables (13% in MIP, 9% in MEP). MEF50% was the only variable that showed a significant difference in the changes over time after 20 weeks of DT between EXP and CON. RM strength in both groups remained relatively unchanged over the DT period. RM endurance in both groups remained unchanged after 9 weeks of DT, but decreased significantly after 20 weeks of DT in EXP. It was concluded that the intensity and duration of both the HT-RMT and HT-ST programmes were adequate to elicit training adaptations in the RM. In both groups there was a complete reversal in lung volumes after 9 weeks and a tendency of a reversal in RM endurance after 20 weeks of DT. It is suggested that a RMT programme should be incorporated every 9 weeks in the training schedule of field hockey players, to maintain improved RM function.

The presented thesis is focused on the influence of postural stability changes on respiratory muscle strength. The aim of this thesis was to determinate whether the respiratory muscle strength will change during the increased demands on postural stability, and if so, then how exactly. The theoretical part summarized the findings about the diaphragm and its postural stabilizing function, about the connection between breathing and postural control as well as about the influence of body position on respiratory muscle strength. In the practical part of the thesis, the values of the maximal respiratory mouth pressures were measured (PI max and PE max) on 21 healthy subjects ranging from 20 to 26 years of age using the spirometer in three postural situations - standing, standing on the balance surface and standing on the balance surface with no visual control. Throughout the whole group, there were no significant statistical differences ( p ≥ 0,05 ) in the outcome values of the measured postural situations. Two trends were observed in the changes of values of PI max and PE max. During the increased demands for postural stability the value of PI max was higher for 29% and lower for 71% of the measured individuals. The value of PE max was higher for 33% and lower for 67% of the measured individuals. This...

Made available in DSpace on 2014-12-17T14:10:24Z (GMT). No. of bitstreams: 1 ThiagoCVN_DISSERT.pdf: 3967132 bytes, checksum: 808ab0fb6d42acf030afd829319cfe49 (MD5) Previous issue date: 2012-03-30 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / The human respiratory system was so designed that would allow efficient ventilation, regardless of variations in the external environment that may hinder the act of breathing, such an act involves dozens of variables, among them we find the respiratory depression, which is nothing more than respiratory muscle strength. The pressures are widely used in several cases: Neuro-muscular; evolution of pulmonary dysfunction and a predictor for discontinuation of mechanical ventilation. Therefore it was proposed to carry out evaluations of these respiratory pressures for children and adolescents aged 10 to 16 years and propose a predictive equation that involves the anthropometric variables age (A, years), body mass (BM, kilograms) and height (H, meters) with maximal respiratory pressures (maximum inspiratory and expiratory pressure). Evaluations were performed in this age group of students in public and private schools of the Grande Natal , measurements were performed using the analogue manometer, were children and adolescents and their parents gave informed consent. 517 samples were taken, and 250 for males (M), 255 for females (F) and 12 were excluded according to our exclusion criteria. The sample was subdivided into three age groups (10-11, 12-13 and 14 to 16 years old). It was found through the student s t test (p &#8804; 0.05) for all variables studied, children and male adolescents had higher means than females, except for the MC. For the correlation between the variables found significant correlation (p <0.05) among all the variables when analyzed as pairs except between MIP and height for females. The development of predictive equations (for p &#8804; 0.05) based on three types of strategies adopted were restricted to two association between anthropometric variables isolated, resulting in: for males: MIP = -32.29 + (-2.11*A) + (-0.52*BM), MIP = 9.99 + (-0.36*BM) + (-49.40*H); MEP = 18.54 + 3.53*A + 0, 42*BM, MEP = -33.37 + 2.78*A + 52.18* H, MEP = -17.39 + 0.33*BM + 55.04*H; and, for females we find: MEP = 24.32 + 2.59 * A + 0.24*BM / O sistema respirat?rio do ser humano foi concebido de maneira que possibilitasse uma ventila??o eficiente, independente das varia??es do meio externo que possam vir a dificultar o ato da respira??o, tal ato envolve dezenas de vari?veis, dentre elas encontramos a press?o respirat?ria, que nada mais ? do que a for?a muscular respirat?ria. As press?es s?o amplamente utilizadas em diversos casos: Doen?as neuro-musculares; evolu??o de disfun??es pulmonares e par?metro preditivo para a descontinuidade da ventila??o mec?nica. Assim sendo foi proposto a realiza??o de avalia??es dessas press?es respirat?rias para as crian?as e adolescentes de 10 aos 16 anos e propor uma equa??o preditiva que envolvesse as vari?veis antropom?tricas idade (ID, anos); massa corporal (MC, Kilogramas) e estatura (E, metros) com as press?es respirat?rias m?ximas (press?o inspirat?ria e expirat?ria m?xima). Foram realizadas as avalia??es nessa faixa et?ria em estudantes de escolas p?blicas e privadas da grande natal, as mensura??es foram realizadas atrav?s da manovacuometria anal?gica, as crian?as e adolescentes foram informadas e seus respons?veis deram o consentimento. Foram realizadas 517 coletas, sendo 250 para o g?nero masculino (M), 255 para o g?nero feminino (F) e 12 foram exclu?dos de acordo com nossos crit?rios de exclus?o. A amostra foi subdividida em 3 faixas et?rias (10 a 11; 12 a 13 e 14 a 16 anos de idade). Constatou-se atrav?s do teste t de student (p&#8804;0,05) que para todas as vari?veis pesquisadas, as crian?as e adolescentes do g?nero masculino apresentaram m?dias superiores aos do g?nero feminino, exceto para a MC. Para a correla??o entre as vari?veis encontramos significativa correla??o (p<0,05) entre todos as vari?veis quando analisadas par a par exceto entre Estatura e a PIm?x para o g?nero feminino. A elabora??o das equa??es preditivas (para p&#8804;0,05) baseadas nos 3 tipos de estrat?gias adotadas ficaram restritas a associa??o entre duas vari?veis antropom?tricas isoladas, resultando em: para o g?nero masculino: PIm?x= -32,29 + (-2,11*ID) + (-0,52*MC); PIm?x= 9,99 + (-0,36*MC) + (-49,40*E); PEm?x= 18,54 + 3,53*ID + 0,42*MC; PEm?x= -33,37 + 2,78*ID + 52,18*E e PEm?x= -17,39 + 0,33*MC + 55,04*E; para o g?nero feminino encontramos: PEm?x= 24,32 + 2,59*ID + 0,24*MC

Introduktion: Respiratorisk muskelsvaghet är förekommande vid olika respiratoriska och neuromuskulära sjukdomar. Mätning av maximala inspiratoriska trycket (MIP) och maximala exspiratoriska trycket (MEP) är en metod som visar på den neuromuskulära funktionen utan lungans påverkan. Studiens syfte var att genomföra mätningar av MIP och MEP på friska individer och sedan validera resultatet utifrån två publicerade normalvärdesmaterial från Wilson et. al. och Karvonen et. al.    Metod och material: Studien genomfördes på 8 män och 19 kvinnor mellan 23 och 63 år. MIP och MEP beräknades genom att deltagarna utförde kraftiga inandningar och utandningar i ett spirometermunstycke mot ett motstånd. För att validera resultatet gentemot de publicerade normalvärdesmaterial användes Z-score som statistisk metod.   Resultat: Resultatet står sig bäst i förhållande till Karvonen et. al. där MEP-värdenas lägre normalvärdesgräns blev –1,8 SD för kvinnor och –1,8 SD för män. MIP-värdena står sig mindre bra med undantag för männens värden i förhållande till Wilson et. al. där högsta värdet låg 1,3 SD och lägsta värdet låg –1,8 SD ifrån det förväntade värdet.   Slutsats: Denna studie visar att de uppmätta trycken överlag tycks stämma bäst överens med MEP-värden från Karvonen et. al. och männens MIP-värden från Wilson et. al. Deltagarnas medverkan, det tekniska tillvägagångssättet och tolkningen av resultatet har stor betydelse för utfallet. / Introduction: Weakness of respiratory muscle strength is occurring in different lung diseases and neuromuscular diseases. Measurement of the maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) are a method that assess the neuromuscular function without the impact of the lung. The aim of this study was to perform measurements of MIP and MEP on healthy individuals and validate the results based on two published normal values from Wilson et. al. and Karvonen et. al.   Method and materials: The measurements were performed on 8 men and 19 women ranging between 23 and 63 years old. MIP and MEP were measured by the participants performing strong inhalations and exhalations against a blocked mouthpiece. Z-score was used as statistical method to validate the results based on the published normal values.    Result: The result was best compared with normal values from Karvonen et. al. for MEP lower limits of normal, –1,8 SD for women and –1,8 SD for men. The MIP values are not comparable except for men´s values compared with normal values from Wilson et. al. where the highest value was 1,3 SD and the lowest value was –1,8 SD from the predicted.    Conclusion: The study shows that the measured pressures were generally best compared with normal MEP values from Karvonen et. al. and men´s MIP values from Wilson et. al. The effort of the participants, the technical approach and the interpretation of the results are of great importance for the outcome.

Background Since anthropometric variables are critical to the creation of pulmonary nomograms for FVC, FEV1, and other volumes and capacities, it is logical that anthropometric variables also influence the values of the maximal respiratory pressures (MRPs). Since nomograms are race-specific, it is important that tribe-specific tables of normal maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) be developed. To date normal tables for MRPs do not exist for Navajo children. Objective Therefore the purpose of this study was to derive MRP normative reference values for Navajo children in the age range of 6-14 years. Methods - Participants and Measurements A cross-sectional study was undertaken with a representative sample of 534 healthy children, ages 6-14 years, attending Navajo Nation elementary schools in Arizona. MIP and MEP were measured. Results Test results from 275 girls and 259 boys met American Thoracic Society quality control standards and showed that MRPs all increased with height. Mean MIP in cm H2O was 77 for boys and 67 for girls with lower limits of 44 and 40, respectively. Mean MEP in cm H2O was 75 for boys and 66 for girls with the lower limits of 42 and 38, respectively. Conclusion Since the data were collected from the population of interest, the resulting MIP and MEP reference equations should be used when testing Navajo children ages 6-14 years.