TABLE 3.
Association between changes, both acute (S2–S1) and changes due to training (S4–S1), in plasma BDNF (pBDNFS2–S1 or pBDNFS4–S1, respectively) and in serum BDNF (sBDNFS2–S1 or sBDNFS4–S1, respectively).
| npairs | τb | p | |
| Acute changes | |||
| pBDNFS2–S1vs. sBDNFS2–S1 | |||
| COG | 42 | –0.12 | 0.26 |
| PHYS | 51 | 0.12 | 0.20 |
| Changes due to training | |||
| pBDNFS4–S1vs. sBDNFS4–S1 | |||
| CE | 20 | –0.13 | 0.46 |
| PE | 25 | –0.21 | 0.16 |
| CE + PE | 22 | 0.01 | 0.96 |
| PE + CE | 25 | –0.15 | 0.32 |
Separate analysis were performed for acute changes in groups COG (CE and CE + PE groups combined) and PHYS (PE and PE + CE groups combined), and for changes due to training in groups CE, PE, CE + PE, and PE + CE. Kendall’s tau-b (τb) correlation coefficients and its p-values were calculated. BDNF, brain-derived neurotrophic factor; npairs, number of pairs compared. The level of significance was set at p < 0.05.