Teste cardiopulmonar de exercício na DPOC: indo além do consumo máximo de oxigênio

Ferreira, Eloara Vieira Machado

doi:10.1590/s1806-37132012000500001

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…Previously identified as determinants for prognosis and survival in several clinical situations [ 6 ], these submaximal relationships have been recommended in the evaluation of chronic diseases patients, mainly cardiorespiratory [ 7 ]. Also known as dynamic physiological responses, the main advantage of these variables is its linear behavior during the increment or workload, regardless achieving maximum effort [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic physiological responses in obese and non-obese adults submitted to cardiopulmonary exercise test

et al. 2021

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Purpose Obese individuals have reduced performance in cardiopulmonary exercise testing (CPET), mainly considering peak values of variables such as oxygen uptake (V˙O2), carbon dioxide production (V˙CO2), tidal volume (Vt), minute ventilation (V˙E) and heart rate (HR). The CPET interpretation and prognostic value can be improved through submaximal ratios analysis of key variables like ΔHR/ΔV˙O2, ΔV˙E/ΔV˙CO2, ΔV˙C/Δlinearized (ln)V˙E and oxygen uptake efficiency slope (OUES). The obesity influence on these responses has not yet been investigated. Our purpose was to evaluate the influence of adulthood obesity on maximal and submaximal physiological responses during CPET, emphasizing the analysis of submaximal dynamic variables. Methods We analyzed 1,594 CPETs of adults (755 obese participants, Body Mass Index ≥ 30 kg/m2) and compared the obtained variables among non-obese (normal weight and overweight) and obese groups (obesity classes I, II and III) through multivariate covariance analyses. Result Obesity influenced the majority of evaluated maximal and submaximal responses with worsened CPET performance. Cardiovascular, metabolic and gas exchange variables were the most influenced by obesity. Other maximal and submaximal responses were altered only in morbidly obese. Only a few cardiovascular and ventilatory variables presented inconsistent results. Additionally, Vtmax, Vt/V˙E, Vt/Inspiratory Capacity, Vt/Forced Vital Capacity, Lowest V˙E/V˙CO2, ΔV˙E/ΔV˙CO2, and the y-intercepts of V˙E/V˙CO2 did not significantly differ regardless of obesity. Conclusion Obesity expressively influences the majority of CPET variables. However, the prognostic values of the main ventilatory efficiency responses remain unchanged. These dynamic responses are not dependent on maximum effort and may be useful in detecting incipient ventilatory disorder. Our results present great practical applicability in identifying exercise limitation, regardless of overweight and obesity.

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Section: Introductionmentioning

confidence: 99%

Dynamic physiological responses in obese and non-obese adults submitted to cardiopulmonary exercise test

et al. 2021

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“…The exercise intolerance is a common manifestation in patients with COPD (22), caused by multiple factors, such as respiratory, cardiovascular and muscle impairment, which may lead to dyspnoea and fatigue that limits the activities of daily living (23).…”

Section: Resultsmentioning

confidence: 99%

Exacerbation and functional capacity of patients with COPD undergoing an exercise training program: longitudinal study

et al. 2015

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Objective To analyze if there is influence of body weight, body mass index (BMI), body composition, dyspnoea, grip strength and tolerance to exertion in the occurrence of exacerbation during a 12-month follow up of patients with COPD who underwent a physical training program. Material and methods Sixty three patients were distributed in two groups, (Exacerbation Group — EG, n = 29; Non-Exacerbated Group — NEG, n = 34). The Mann Whitney test was used for the comparison between groups, the Friedman test (posthoc Dunn) to compare the assessments and the logistic regression analysis, with a significance level of p < 0.05. Results There is a significant difference between the groups in age and walked distance (WD) in the sixminute walk test (6MWT). The WD was reduced in 6th, 9th and 12th month revaluation compared to baseline and 3 months for the EG. Logistic regression analysis showed a significant interaction between the lean body mass and the WD, BMI with the lean body mass and the BMI with the WD, this and the isolated dyspnoea, and lean body mass with body weight. Conclusion Involving several variables along the follow up of patients with COPD in physical therapy programs is important, since it may prevent or reduce the chance of the occurrence of exacerbations. In addition, older patients with less tolerance to physical activity had a higher number of episodes of exacerbation, even when participating in a physiotherapy program associated to exercise training.

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“…A Doença Pulmonar Obstrutiva Crônica (DPOC) é definida como enfermidade respiratória, geralmente progressiva, caracterizada por provocar obstrução crônica ao fluxo aéreo não totalmente reversível 1,2 . Além disso, a DPOC apresenta consequências sistêmicas que podem convergir para a disfunção muscular periférica com perda de massa e força musculares e redução da atividade das enzimas mitocondriais, causando maior fatigabilidade muscular, menor tolerância ao exercício e menor sobrevida [3][4][5][6][7] .…”

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Lactato sanguíneo, antes e após o teste de caminhada de seis minutos, em portadores de doença pulmonar obstrutiva crônica com diferentes graus de obstrução das vias aéreas

et al. 2016

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Teste cardiopulmonar de exercício na DPOC: indo além do consumo máximo de oxigênio

Cited by 4 publications

References 8 publications

Dynamic physiological responses in obese and non-obese adults submitted to cardiopulmonary exercise test

Dynamic physiological responses in obese and non-obese adults submitted to cardiopulmonary exercise test

Exacerbation and functional capacity of patients with COPD undergoing an exercise training program: longitudinal study

Lactato sanguíneo, antes e após o teste de caminhada de seis minutos, em portadores de doença pulmonar obstrutiva crônica com diferentes graus de obstrução das vias aéreas

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