Resumen de Estimation of Oxygen Uptake From Heart Rate and Ratings of Perceived Exertion in Young Soccer Players
Del P. Wong, Christopher J. Carling, Anis Chaouachi, Alexandre Dellal, Carlo Castagna, Karim Chamari, David G. Behm
The objective of this study was to estimate the oxygen uptake ([latin capital V with dot above]O2) in elite youth soccer players using measures of heart rate (HR) and ratings of perceived exertion (RPEs). Forty-six regional-level male youth soccer players (~13 years) participated in 2 [latin capital V with dot above]O2max tests. Data for HR, RPE, and [latin capital V with dot above]O2 were simultaneously recorded during the [latin capital V with dot above]O2max tests with incremental running speed. Regression equations were derived from the first [latin capital V with dot above]O2max test. Two weeks later, all players performed the same [latin capital V with dot above]O2max test to validate the developed regression equations. There were no significant differences between the estimated values in the first test and actual values in the second test. During the continuous endurance exercise, the combination of percentage of maximal HR (%HRmax) and RPE measures gave similar estimation of %[latin capital V with dot above]O2max (R2 = 83%) in comparison to %HRmax alone (R2 = 81%). However, the estimation of [latin capital V with dot above]O2 using combined %HRmax and RPE was not satisfactory (R2 = 45-46%). Therefore, the use of %HRmax (without RPE) to estimate %[latin capital V with dot above]O2max could be a useful tool in young soccer players during field-based continuous endurance testing and training. Specifically, coaches can use the %HRmax to quantify internal loads (%[latin capital V with dot above]O2max) and subsequently implement continuous endurance training at appropriate intensities. Furthermore, it seems that RPE is more useful as a measure of internal load during noncontinuous (e.g., intermittent and sprint) exercises but not to estimate %[latin capital V with dot above]O2max during continuous aerobic exercise (R2 = 59%).
