Skip to main content

Table 3 Lesion statistics from serial fluid-attenuated inversion recovery (FLAIR) imaging

From: Substantial and reversible brain gray matter reduction but no acute brain lesions in ultramarathon runners: experience from the TransEurope-FootRace Project

Comparisons

No. of new lesions

No. of subjects

t Test

Pvalue

t1 to t2

-0.08 (0.82)

12

-0.35

0.732

t2 to t3

-0.36 (0.64)

11

-1.90

0.087

t3 to t4

0.17 (0.52)

6

0.79

0.465

 

Volume change of lesions

   

t1 to t2

54.9 (247.4)

12

0.77

0.458

t2 to t3

38.3 (116.9)

11

1.09

0.302

t3 to t4

-100.42 (237.7)

6

-1.03

0.348

  1. t1 = timepoint 1, start of the race; t2 = timepoint 2, after an average distance of 2,326 km; t3 = timepoint 3, after an average distance of 4,005 km from t1; t4 = timepoint 4, follow-up measurements around 8 months after finishing the race. No. of new lesions = across participants averaged number of new lesions (SD) observed between two consecutive timepoints. No. of subjects = number of subjects with two consecutive FLAIR measurements to enter a paired t test. Volume change of lesions = for calculation of lesion volumes see Methods section, shown is the difference between averaged sums of lesion volumes obtained at two consecutive timepoints, units are mm3.