Reference equations of oxygen uptake for the step test in the obese population

Autor(es)

Fagundes, C. F. ; Di Thommazo-Luporini, L. ; Goulart, C. L. ; Braatz, D. ; Ditomaso, A. ; Borghi-Silva, A.

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Medical and Biological Research; v. 55, n. 1, p. 8-pg., 2022-01-01.

Resumo

The aim of this study was to establish reference equations for the six-minute step test (6MST) based on demographic, anthropometric, body composition, and performance variables able to predict oxygen uptake ((V) over dotO(2)) in obese individuals. Seventy-three obese adults (42 +/- 14 years old, body mass index 430 kg/m(2)) from both sexes were included. They underwent anamnesis, body composition evaluation, and the 6MST with expired gases registered simultaneously. Three equations were developed for the obese population (n=73; 59% female). The first equation was composed of the up-and-down step cycles (UDS), sex, and age as predictors; the second equation was composed of the UDS, age, and lean mass (LM). Both equations collectively explained 68.1% of the (V) over dotO(2) variance in the 6MST, while the third equation, composed of the UDS, age, and body mass, accounted for 67.7% of the (V) over dotO(2) variance. UDS, sex, age, LM, and body mass were important (V) over dotO(2) predictors of 6MST in these obese individuals. This study contributes to the dissemination of a simple, inexpensive, and fast evaluation method that can provide important indicators of cardiorespiratory fitness and guide strategies for rehabilitation. (AU)

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