Table 2.
Relationships among the parameters by N-back task, WCST, CPT-IP, and NIRS versus physical activity, TST, and sleep efficiency.
| Simple correlation |
Multiple regression analysis |
Simple correlation |
Multiple regression analysis |
|||||
|---|---|---|---|---|---|---|---|---|
| r | p | β | p | r | p | β | p | |
| 0-back task | % corrects | Reaction time | ||||||
| Exercise amount | −0.129 | 0.558 | −0.139 | 0.554 | −0.602 | 0.002* | −0.634 | 0.002* |
| TST | 0.040 | 0.856 | 0.030 | 0.900 | 0.006 | 0.980 | −0.029 | 0.876 |
| Sleep efficiency | 0.038 | 0.862 | 0.052 | 0.831 | 0.092 | 0.678 | 0.204 | 0.293 |
| 1-back task | % corrects | Reaction time | ||||||
| Exercise amount | 0.327 | 0.127 | 0.334 | 0.133 | −0.446 | 0.033* | −0.454 | 0.031* |
| TST | 0.234 | 0.282 | 0.250 | 0.268 | −0.314 | 0.145 | −0.333 | 0.113 |
| Sleep efficiency | 0.030 | 0.893 | −0.099 | 0.662 | −0.044 | 0.841 | 0.128 | 0.536 |
| 2-back task | % corrects | Reaction time | ||||||
| Exercise amount | 0.195 | 0.372 | 0.209 | 0.292 | −0.113 | 0.607 | −0.108 | 0.626 |
| TST | 0.486 | 0.019* | 0.542 | 0.014* | −0.332 | 0.121 | −0.343 | 0.143 |
| Sleep efficiency | 0.024 | 0.913 | −0.218 | 0.293 | −0.067 | 0.760 | 0.052 | 0.823 |
| WCST | Category achievement | Total errors | ||||||
| Exercise amount | 0.080 | 0.719 | 0.119 | 0.604 | −0.249 | 0.252 | −0.212 | 0.336 |
| TST | −0.037 | 0.866 | 0.030 | 0.899 | −0.246 | 0.257 | −0.184 | 0.416 |
| Sleep efficiency | −0.216 | 0.322 | −0.245 | 0.312 | −0.271 | 0.211 | −0.182 | 0.428 |
| CPT-IP | % corrects | d prime | ||||||
| Exercise amount | −0.163 | 0.458 | −0.148 | 0.525 | −0.036 | 0.869 | −0.074 | 0.747 |
| TST | −0.084 | 0.704 | −0.054 | 0.820 | −0.034 | 0.876 | −0.107 | 0.652 |
| Sleep efficiency | −0.121 | 0.584 | −0.080 | 0.740 | 0.212 | 0.333 | 0.255 | 0.293 |
| NIRS | Peak OxyHb | Time to the peak OxyHb | ||||||
| Exercise amount | 0.407 | 0.054 | 0.394 | 0.067 | 0.326 | 0.130 | 0.373 | 0.091 |
| TST | 0.286 | 0.186 | 0.267 | 0.218 | 0.004 | 0.984 | 0.080 | 0.714 |
| Sleep efficiency | 0.154 | 0.483 | 0.011 | 0.960 | −0.223 | 0.307 | −0.308 | 0.176 |
| NIRS | Area under the NIRS curve | Reaction time | ||||||
| Exercise amount | 0.492 | 0.017* | 0.486 | 0.023* | 0.605 | 0.002* | 0.576 | 0.004* |
| TST | 0.227 | 0.297 | 0.211 | 0.311 | 0.171 | 0.436 | 0.102 | 0.586 |
| Sleep efficiency | 0.131 | 0.550 | −0.010 | 0.960 | 0.279 | 0.197 | 0.155 | 0.417 |
Abbreviations: CPT-IP = Continuous Performance Test–Identical Pairs; NIRS = near-infrared spectroscopy; OxyHb = oxyhemoglobin; TST = total sleep time; WCST = Wisconsin Card Sorting Test.
⁎
p < 0.05.