Abstract
The aim of the current study was to compare 2 equations to predict peak oxygen uptake
(V̇O2peak) in obese women, according to their obesity class. 92 maximal cardiopulmonary
exercise testing sets (CPET with initial and subsequent increments set to achieve
an exercise duration between 8–12 min) were retrospectively analysed. These CPET were
divided into 3 groups according to the women body mass indexes (BMI): class 1 (30 kg.m−2≤BMI<35 kg.m−2, n=22), class 2 (35 kg.m−2≤BMI<40 kg.m−2, n=36) or class 3 (BMI≥40 kg.m−2, n=34). Each participant’s V̇O2peak was predicted from 2 prediction equations (from Wasserman et al.'s and Debeaumont
et al.'s equations) and compared with the actual V̇O2peak. Moreover, the correlations between these values were studied, and the accuracy
of the predictions was analysed. Only predicted V̇O2peak from the Debeaumont et al.'s equation was not significantly different from the
actual V̇O2peak in the women in obesity class 3 (p=0.89). Moreover, significant correlation was
found between these values (p<0.001, r=0.68). The bias and the 95% limits of agreement
represented -3.2±34.0%. In women in obesity class 3, Debeaumont et al.'s equation
may be the accurate one to predict V̇O2peak. However, the accuracy of predictions is low. Consequently, to improve this accuracy,
new prediction equations for obese women are required according to the obesity class.
Key words
Maximal oxygen consumption - cardiopulmonary exercise testing - obesity - validity
- accuracy
