Correlation between endurance tests

This article is dedicated for those who had received or receiving sport science education.

Today I performed some statistical calculations about the correlations between several aerobic endurance tests: (1) lab VO2max test; (2) Maximal aerobic speed field test; and (3) Yo-Yo Intermittent Recovery Test (YYIRT).

correlation between MAS speed and maximal treadmill speed = 0.80, p=0.001

MAS distance and YYIRT=0.80, p=0.000
MAS distance and VO2max (ml/min/kg)=0.68, p=0.008
MAS distance and VO2max (ml/min/kg-0.75)=0.71, p=0.004
MAS distance and VO2max time (s)=0.86, p=0.000

YYIRT and VO2max (ml/min/kg)=0.69, p=0.005
YYIRT and VO2max (ml/min/kg-0.75)=0.65, p=0.009
YYIRT and VO2max time (s)=0.78, p=0.001

From these results, I prefer using MAS test as a field test to estimate VO2max.

But YYIRT, due to the intermitttent nature, had different physiological response compared to the continuous exercise mode. Therefore, YYIRT should be also good to evaluate the football-specific intermittent aerobic endurance.