TABLE 3.
Model relating VO2max to neurophysiological measures gamma-aminobutyric acid+ (GABA+), glutamate-glutamine complex (Glx), and cerebral blood flow (CBF).
| β | R2 | F | p | |
| All participants | ||||
| GABA+ | 12.63 | 0.24 | 4.85 | 0.04** |
| Glx | 2.25 | 0.38 | 9.10 | 0.009** |
| CBF | 0.25 | 0.07 | 1.21 | 0.29 |
| Younger participants | ||||
| GABA+ | −0.79 | 0 | 0 | 0.95 |
| Glx | −0.31 | 0 | 0.01 | 0.91 |
| CBF | −0.71 | 0.50 | 4.92 | 0.08 |
| Older participants | ||||
| GABA+ | 7.57 | 0.20 | 2.00 | 0.19 |
| Glx | 0.93 | 0.10 | 0.94 | 0.36 |
| CBF | −0.09 | 0.02 | 0.13 | 0.73 |
β denotes the model coefficient, and F, R2, and p denote standard statistical parameters for F-statistics, proportion of the variance and alpha threshold, respectively.
**Significant at p ≤ 0.05. Bolded text is to indicate significant or trending results.