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      Reference values for lung function tests: II. Maximal respiratory pressures and voluntary ventilation

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          Abstract

          The strength of the respiratory muscles can be evaluated from static measurements (maximal inspiratory and expiratory pressures, MIP and MEP) or inferred from dynamic maneuvers (maximal voluntary ventilation, MVV). Although these data could be suitable for a number of clinical and research applications, no previous studies have provided reference values for such tests using a healthy, randomly selected sample of the adult Brazilian population. With this main purpose, we prospectively evaluated 100 non-smoking subjects (50 males and 50 females), 20 to 80 years old, selected from more than 8,000 individuals. Gender-specific linear prediction equations for MIP, MEP and MVV were developed by multiple regression analysis: age and, secondarily, anthropometric measurements explained up to 56% of the variability of the dependent variables. The most cited previous studies using either Caucasian or non-Caucasian samples systematically underestimated the observed values of MIP (P<0.05). Interestingly, the self-reported level of regular physical activity and maximum aerobic power correlates strongly with both respiratory and peripheral muscular strength (knee extensor peak torque) (P<0.01). Our results, therefore, provide a new frame of reference to evaluate the normalcy of some useful indexes of respiratory muscle strength in Brazilian males and females aged 20 to 80.

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          Most cited references 23

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          Lung function testing: selection of reference values and interpretative strategies.

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            Maximal respiratory pressures: normal values and relationship to age and sex

             LF Black,  RE Hyatt (1969)
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              A short questionnaire for the measurement of habitual physical activity in epidemiological studies

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                bjmbr
                Brazilian Journal of Medical and Biological Research
                Braz J Med Biol Res
                Associação Brasileira de Divulgação Científica (Ribeirão Preto )
                1414-431X
                June 1999
                : 32
                : 6
                : 719-727
                Affiliations
                [1 ] University of London
                [2 ] Universidade de São Paulo Brazil
                [3 ] Universidade de São Paulo Brazil
                Article
                S0100-879X1999000600007
                10.1590/S0100-879X1999000600007
                10412550
                Product
                Product Information: website
                Categories
                BIOLOGY
                MEDICINE, RESEARCH & EXPERIMENTAL

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