Table 2.
Reliability of fNIRS recording of PFC activity in young adults.
| Task | Time | PFC region | Trial 1 Mean (SD) | Trial 2 Mean (SD) | Mean Differencea | p | ICC2, 1 (95% CI) | LoA 95% |
|---|---|---|---|---|---|---|---|---|
| Turning (n = 25) | Overall | B/L | −0.02 (0.25) | −0.01 (0.33) | 0.02 | 0.859 | 0.673 (0.245 to 0.857) | 0.819 |
| L | −0.02 (0.19) | 0.03 (0.55) | 0.12 | 0.297 | 0.512 (−0.093 to 0.784) | 1.162 | ||
| R | 0.03 (0.28) | 0.01 (0.27) | −0.01 | 0.745 | 0.658 (0.213 to 0.850) | 0.823 | ||
| Early | B/L | −0.02 (0.19) | −0.02 (0.27) | 0.02 | 0.863 | 0.793 (0.517 to 0.911) | 0.616 | |
| Late | B/L | 0.01 (0.33) | 0.01 (0.43) | 0.00 | 0.959 | 0.709 (0.316 to 0.875) | 0.919 | |
| Walking (n = 19) | Overall | B/L | −0.19 (0.24) | −0.18 (0.41) | 0.04 | 0.940 | 0.714 (0.239 to 0.891) | 0.925 |
| L | −0.23 (0.33) | −0.19 (0.64) | 0.09 | 0.786 | 0.685 (0.164 to 0.880) | 1.355 | ||
| R | −0.15 (0.32) | 0.18 (0.36) | −0.03 | 0.682 | 0.709 (0.231 to 0.889) | 0.938 | ||
| Early | B/L | −0.16 (0.26) | −0.17 (0.34) | −0.04 | 0.897 | 0.520 (−0.511 to 0.846) | 0.831 | |
| Late | B/L | −0.17 (0.34) | −0.17 (0.51) | 0.07 | 0.977 | 0.707 (0.220 to 0.888) | 1.224 | |
| Average | Overall | B/L | – | – | 0.03 | – | 0.668 (0.154 to 0.867) | 0.961 |
a
Trial 2 minus Trial 1, PFC, pre-frontal cortex; ICC, Intra-class correlation coefficient; CI, confidence interval; LoA, limits of agreement; B/L, bilateral; L, left; R, right. * p < 0.05.