Table 2.
Correlation coefficients between serum NFL levels and physical performance test, body composition and plasma metabolites in the participants and by gender.
| Total (N = 40) | Males (N = 20) | Females (N = 20) | ||||
|---|---|---|---|---|---|---|
| R | p | r | p | r | p | |
| NFL vs. Physical performance tests | ||||||
| Chair test (s) | 0.509 | 0.010 * | 0.478 | 0.033 * | 0.008 | 0.975 |
| Grip strength (kg) | −0.202 | 0.211 | −0.535 | 0.015 * | −0.108 | 0.650 |
| 4 m gait speed at usual pace (m/s) | −0.223 | 0.167 | −0.460 | 0.041 * | −0.047 | 0.843 |
| 4 m gait speed at fast pace (m/s) | −0.284 | 0.076 | −0.423 | 0.063 | 0.131 | 0.582 |
| NFL vs. Body composition | ||||||
| Intracellular water | −0.168 | 0.300 | −0.384 | 0.095 | 0.169 | 0.477 |
| Extracellular water | −0.130 | 0.424 | −0.255 | 0.279 | 0.220 | 0.350 |
| Body fat mass | 0.284 | 0.075 | 0.482 | 0.031 * | 0.006 | 0.980 |
| Soft Lean Mass | −0.152 | 0.349 | −0.320 | 0.168 | 0.168 | 0.478 |
| Fat Free Mass | −0.153 | 0.347 | −0.331 | 0.154 | 0.177 | 0.456 |
| Fat Percentage | 0.337 | 0.034 * | 0.496 | 0.026 * | −0.052 | 0.828 |
| Visceral Fat Area | 0.319 | 0.045 * | 0.516 | 0.020 * | 0.112 | 0.638 |
| Waist Hip Ratio | 0.155 | 0.339 | 0.354 | 0.126 | −0.048 | 0.840 |
| 50 kHz body phase angle | −0.406 | 0.009 * | −0.603 | 0.005 * | −0.182 | 0.442 |
| NFL vs. Metabolomic markers | ||||||
| ASP | 0.371 | 0.018 * | 0.320 | 0.169 | 0.446 | 0.049 * |
| GLU | 0.181 | 0.264 | 0.445 | 0.050 * | 0.000 | 1.000 |
| GLY | −0.215 | 0.183 | −0.608 | 0.004 * | 0.062 | 0.796 |
| SER | −0.249 | 0.122 | −0.443 | 0.050 * | −0.055 | 0.818 |
| Putrescine | 0.428 | 0.006 * | 0.419 | 0.066 | 0.463 | 0.040 * |
| TAU | 0.317 | 0.046 * | 0.293 | 0.209 | 0.335 | 0.148 |
| KYN | 0.319 | 0.045 * | 0.253 | 0.283 | 0.386 | 0.092 |
| LysoPC_aa_C17:0 | 0.204 | 0.207 | −0.084 | 0.726 | 0.492 | 0.028 * |
| LysoPC_aa_C18:2 | −0.111 | 0.495 | −0.458 | 0.042 * | 0.347 | 0.133 |
| PC_aa_C36:5 | 0.395 | 0.013 * | 0.564 | 0.010 * | 0.214 | 0.379 |
| PC_aa_C36:6 | 0.309 | 0.056 | 0.460 | 0.041 * | 0.096 | 0.697 |
| PC_aa_C38:6 | 0.191 | 0.245 | 0.513 | 0.021 * | −0.183 | 0.454 |
| PC_aa_C42:5 | 0.194 | 0.237 | 0.462 | 0.040 * | 0.015 | 0.952 |
| PC_ae_C38:0 | 0.226 | 0.166 | 0.477 | 0.034 * | −0.016 | 0.949 |
| PC.aa.C40.3 | 0.322 | 0.046 * | 0.299 | 0.200 | 0.282 | 0.241 |
| PC_ae_C42:3 | 0.349 | 0.030 * | 0.110 | 0.645 | 0.579 | 0.009 * |
| PC_ae_C44:4 | 0.457 | 0.003 * | 0.490 | 0.028 * | 0.447 | 0.055 |
| Acetylcarnitine | 0.325 | 0.041 * | 0.335 | 0.148 | 0.344 | 0.137 |
| OH-Sphingomyelin C22.2 | 0.318 | 0.045 * | 0.325 | 0.128 | 0.227 | 0.336 |
Values are expressed as spearman correlation coefficient * Statistically significant p < 0.05