Silvino, V. O., C. P. Ferreira, D. M. L. do Prado, and M. A. P. dos Santos. “Comparison Between the Direct Determination of VO2 Max and the Indirect Determination of VO2 Max by the Polar Device V800 in Recreational Runners”. PsychTech & Health Journal, Vol. 5, no. 2, Apr. 2022, pp. 3-10, doi:10.26580/PTHJ.art37-2022.