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Table 4 PCA component matrix (peak values)

From: Ventilatory response to exercise of elite soccer players

 

Component

 

1

2

3

V ˙ O 2 peak

0.950

0.014

0.081

V ˙ O 2 peak

0.859

−0.217

−0.088

V ˙ O 2 peak / H R peak

0.853

−0.182

0.305

V ˙ E peak

0.720

0.147

−0.518

RR peak

−0.305

0.362

−0.665

HR peak

−0.180

0.406

−0.304

BRR

−0.197

0.675

0.688

(V d /V t ) peak

−0.341

−0.545

0.301

FEV 1

0.432

0.817

0.214