Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713


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Influence of lean body mass on cardiopulmonary repercussions during the six-minute walk test in patients with COPD

Influência da massa magra corporal nas repercussões cardiopulmonares durante o teste de caminhada de seis minutos em pacientes com DPOC

Nilva Regina Gelamo Pelegrino, Paulo Adolfo Lucheta, Fernanda Figueirôa Sanchez, Márcia Maria Faganello, Renata Ferrari, Irma de Godoy

J Bras Pneumol.2009;35(1):20-26

Abstract PDF PT PDF EN Portuguese Text

Objective: Although lean body mass (LBM) has been associated with mortality in patients with COPD, its influence on functional limitation is not clear. The objective of this study was to analyze the cardiopulmonary variables in COPD patients with or without LBM depletion, prior to and after the six-minute walk test (6MWT). Methods: We evaluated COPD patients, 32 with LBM depletion and 36 without. All patients underwent clinical evaluation, spirometry, evaluation of body mass composition and 6MWT, as well as completing questionnaires related to quality of life and perception of dyspnea. Results: No significant differences in the severity of airway obstruction, perception of dyspnea and quality of life scores were found between the groups. The distance covered on the 6MWT was similar in COPD patients with and without LBM depletion (470.3 ± 68.5 m vs. 448.2 ± 89.2 m). However, patients with LBM depletion presented significantly greater differences between baseline and final values in terms of heart rate and Borg scale index for lower limb fatigue. There was a significant positive correlation between distance covered on the 6MWT and FEV1 (r = 0.381, p = 0.01).Conclusions: In the patients studied, functional exercise tolerance and quality of life were unaffected by LBM depletion. However, the patients with LBM depletion presented more pronounced lower limb fatigue during the 6MWT, which underscores the importance of the evaluation and treatment of systemic manifestations in COPD patients.


Keywords: Body mass index; Pulmonary disease, chronic obstructive; Exercise tolerance.


Relationship between body mass index and asthma severity in adults

Relação entre o índice de massa corporal e a gravidade da asma em adultos

Nilva Regina Gelamo Pelegrino, Márcia Maria Faganello, Fernanda Figueirôa Sanchez, Carlos Roberto Padovani, Irma de Godoy

J Bras Pneumol.2007;33(6):641-646

Abstract PDF PT PDF EN Portuguese Text

Objective: Elevated values of body mass index (BMI) have been associated with higher prevalence of asthma in adults. The aim of the present study is to evaluate the association between obesity and asthma severity. Methods: Medical records of two hundred patients older than 20 years of age were evaluated retrospectively. Asthma severity was established after the evaluation of the medical history and diagnosis recorded, spirometry results and the medicines prescribed. BMI was calculated and patients were classified as obese when the BMI was ≥ 30 kg/m2. Results: 23% of the patients presented intermittent asthma, 25.5% presented mild persistent asthma, 24% presented moderate persistent asthma, and 27.5% presented severe persistent asthma. Values of BMI ≤ 29.9 kg/m2 were observed in 68% of the patients and in 32% the BMI was ≥ 30 kg/m2. The odds ratio of the correlation between obesity and asthma severity was 1.17 (95% CI: 0.90-1.53; p > 0.05). Conclusions: In the sample evaluated in this study no correlation between obesity and asthma severity was found for either gender.


Keywords: Asthma; Body mass index, Sex distribution; Obesity.




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