Table 3.  Pearson correlation coefficients between several key performance determinants in a 40-m maximal shuttle run test (8 ´ 40-m; 20 s rest periods) and a 30-m multiple sprint test (12 ´ 30-m; repeated at 35 s intervals).
 

Fastest time

Mean time

Fatigue

Blood lactate

RPE

Pre-test

Post-test

Mid-test

End-test

Pearson r

0.83

0.83

0.71

0.47

0.77

0.51

0.85

95% CL

0.57 - 0.94

0.57 - 0.94

0.33 - 0.89

-0.03 - 0.79

0.45 - 0.92

0.01 - 0.80

0.61 - 0.95
CL = confidence limits; RPE = rating of perceived exertion