Behavior of respiratory muscle strength in morbidly obese women by using different predictive equations.

Autor: Pazzianotto-Forti EM; Postgraduate Physical Therapy Program, Universidade Metodista de Piracicaba, Piracicaba, SP, Brasil. empforti@unimep.br, Peixoto-Souza FS, Piconi-Mendes C, Rasera-Junior I, Barbalho-Moulim M
Jazyk: English; Portuguese
Zdroj: Revista brasileira de fisioterapia (Sao Carlos (Sao Paulo, Brazil)) [Rev Bras Fisioter] 2012 Nov-Dec; Vol. 16 (6), pp. 479-86.
Abstrakt: Background: Studies on the behavior of respiratory muscle strength (RMS) in morbidly obese patients have found conflicting results.
Objectives: To evaluate RMS in morbidly obese women and to compare the results by using different predictive equations.
Method: This is a cross-sectional study that recruited 30 morbidly obese women and a control group of 30 normal-weight women. The subjects underwent anthropometric and maximal respiratory pressure measurement. Visual inspection of the Bland-Altman plots was performed to evaluate the correlation between the different equations, with a p value lower than 0.05 considered as statistically significant.
Results: The obese women showed a significant increase in maximal inspiratory pressure (MIP) values (-87.83±21.40 cmH(2)O) compared with normal-weight women (-72±15.23 cmH(2)O) and a significant reduction of MIP (-87.83±21.40 cmH(2)O) according to the values predicted by the EHarik equation (-130.71±11.98 cmH(2)O). Regarding the obtained maximal expiratory pressure (MEP), there were no between-group differences (p>0.05), and no agreeement was observed between obtained and predicted values of MEP and the ENeder and ECosta equations.
Conclusions: Inspiratory muscle strength was greater in the morbidly obese subjects. The most appropriate equation for calculating the predicted MIP values for the morbidly obese seems to be Harik-Khan equation. There seem to be similarities between the respiratory muscle strength behavior of morbidly obese and normal-weight women, however, these findings are still inconclusive.
Databáze: MEDLINE
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