[Equations for predicting aerobic power (VO(2)) of young Brazilian adults].
BACKGROUND
VO2 may be predicted with base on anthropometric and physiological parameters for determined populations.


OBJECTIVE
To propose models for submaximal and maximal VO2 prediction in young Brazilian adults.


METHODS
A total of 137 volunteers (92 men) underwent graded maximal exercise test (GXT) in a cycle ergometer (MonarkTM, Br). Gas exchange and respiratory measurements were performed in an open circuit (AerosportTM TEEM 100, USA). In another group, 13 volunteers underwent GXT and a square wave test (SWT) in order to evaluate the external validity of Neder et al's formula, ACSM's formula, and of Astrand-Ryhming nomogram. The study design chosen was a cross-validation and the significance level was set at p < 0.05.


RESULTS
For men during submaximal exercises, a mathematical model was deduced with base on workload, body mass, and age, which explained 89% of the VO2 variation, with SEE (standard error of the estimate) = 0.33 l.min-1. For the maximum load in the male group, another model with the same variables explained 71% of VO2 variation, with SEE = 0.40 l.min-1. For women, 93% of VO2 variation could be explained, with SEE = 0.17 l.min-1, both in submaximal and maximal exercise, with only one equation by use e of the same independent variables.


CONCLUSIONS
The models derived in the present study proved to be accurate to predict submaximal and maximal VO2 in young Brazilian adults. (Arq Bras Cardiol. 2010; [online]. ahead print, PP.0-0).
Magrani
Paula
P
Universidade Federal do Rio de Janeiro, RJ, Brazil.
Pompeu
Fernando Augusto Monteiro Saboia
FA
D000328:Adult; D015992:Body Mass Index; D001938:Brazil; D005080:Exercise Test / Q000379:methods* / Q000592:standards; D017079:Exercise Tolerance / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008451:Maximal Voluntary Ventilation / Q000502:physiology; D008875:Middle Aged; D008954:Models, Biological; D010101:Oxygen Consumption / Q000502:physiology; D011237:Predictive Value of Tests; D012016:Reference Values; D015203:Reproducibility of Results; D012737:Sex Factors; D013997:Time Factors