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Revista médica de Chile

versión impresa ISSN 0034-9887

Resumen

VASQUEZ-GOMEZ, JAIME et al. Un modelo para predecir el consumo de oxígeno según signos vitales y hábitos de vida en estudiantes universitarios. Rev. méd. Chile [online]. 2019, vol.147, n.11, pp.1437-1442. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872019001101437.

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Background

Maximal oxygen uptake (V̇O 2 max) is measured using maximal and submaximal exercise tests or can be predicted using demographic variables, body adiposity, vital signs and lifestyles.

Aim

To elaborate an equation to predict the V̇O 2 max in the absence of cardiopulmonary test in university students.

Material and Methods

V̇O 2 max was measured directly using a cardiopulmonary test on a treadmill in 121 students aged 22 ± 2 years (59 males). Data about drug and medication use, physical activity [PA], vital signs at rest, and basic anthropometry were collected. The independent variables were included in a multivariate equation and the validity of the model was checked through distribution assumptions and according to the concordance limits of the Bland-Altman diagram.

Results

The best predictive equation for V̇O 2 max incorporated sex, age, body mass index, blood pressure, heart rate, smoking habits and PA as independent variables. The distributional assumptions were fulfilled (p > 0.05), there were no differences between the equation and the measurement of V̇O 2 max (p = 0.854) with a bias of -0.08 ml·kg·min -1 (95% confidence intervals [-0.95; 0.78]).

Conclusions

The resulting equation predicts V̇O 2 max based on body adiposity, physiological parameters and life habits.

Palabras clave : Exercise Test; Oxygen Consumption; Students.

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