TABLE 3.

Pre-Post VO₂max test differences in BDNF expression related to B2M mRNA.

ID	Allele-specific BDNF expression decrease (%)
	Val	Met	Val Mean, SD	Met Mean, SD	Total mean, SD
1	−43.6		−45.5 ± 9.4%*	−35.3 ± 8.4%*	−44.5 ± 9.7%
2	−36.0
3	−39.9	−34.7
4	−57.9
5	−44.9	−42.6
6	−63.2
7	−49.4
8	−50.4
9	−43.8
10	−50.6
11		−40.0
12	−32.6	−23.7
13	−33.6

Val, Val66-coding BDNF allele; Met, Met66-coding BDNF allele. *p-value of Val/Met mean difference is 0.09.