Concordance between the indirect V̇O2max value estimated through the distance in Yo-Yo intermittent recovery test level 1 and the direct measurement during a treadmill protocol test in elite youth soccer players

Abstract

The main aim of this study was to evaluate the concordance between the indirect V̇O2max value estimated by the distance achieved in the Yo-Yo intermittent recovery test level 1 (YYIR1) and the direct measurement during a treadmill protocol test (TP) in elite youth soccer players. Methods: Fourteen elite under 20 year's old soccer players from a first division soccer club were evaluated. Test were performed one week apart. In both tests V̇O2, was measured with an ambulatory gas exchange measurement. YYIR1 estimated V̇O2max was calculated using the equation described by Bangsbo et al. (2008) and in TP was calculated using American College of Sport Medicine equation. Results: Lin´s concordance correlation coefficient between direct V̇O2max in TP and estimated V̇O2max in YYIR1=0.271 (poor concordance). Conclusions: The poor concordance between direct and indirect V̇O2max measurements in TP and YYIR1, indicated that in an elite population both

Differential Expression of Genes Associated with Chromatin Modifications in Skeletal Muscle during Aerobic Training Program

“…Oxygen concentrations vary as a function of the type and intensity of exercise, modifying cellular metabolism [6][7][8][9]. During aerobic or anaerobic stress, cellular metabolism has become an important biological node that governs cellular behavior specifically in skeletal muscle [10,11].…”