Table 1 Intraclass correlation coefficients (ICC) and 95% confidence intervals for each variable by group of non-physically active subjects (NAS) and physically active subjects (PAS).

From: The learning effect in repeated Yo-Yo intermittent recovery tests in adults with different levels of physical fitness

 

NAS

PAS

Performance level

0.946; 95% CI [0.784, 0.987]

0.921; 95% CI [0.682, 0.980]

Maximal heart rate

0.912; 95% CI [0.768, 0.979]

0.911; 95% CI [0.741, 0.975]

Heart rate 1 min post-YYIR1

0.918; 95% CI [0.812, 0.980]

0.918; 95% CI [0.812, 0.980]

Heart rate 2 min post-YYIR1

0.903; 95% CI [0.744, 0.973]

0.905; 95% CI [0.764, 0.973]

Heart rate 3 min post-YYIR1

0.911; 95% CI [0.732, 0.975]

0.909; 95% CI [0.735, 0.976]

Maximal oxygen uptake

0.975; 95% CI [0.901, 0.994]

0.926; 95% CI [0.803, 0.984]

Distance covered

0.976; 95% CI [0.903, 0.994]

0.974; 95% CI [0.894, 0.993]

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