Table 1.
Preadolescents’ demographic and cognitive-related characteristics of the Young and the Old Groups (mean ± SD).
| Variables | Young Group | Old Group |
|---|---|---|
| No. of participants (% male) | 150 (62.7%) | 188 (64.9%) |
| Mean age (years) | 9.49 ± 0.50 | 11.37 ± 0.48 |
| Height (m) | 1.37 ± 0.07 | 1.48 ± 0.08* |
| Weight (kg) | 30.07 ± 5.70 | 36.88 ± 7.99* |
| BMI (kg.m−2) | 16.02 ± 2.10 | 16.73 ± 2.47* |
| Estimated VO2max (ml.kg−1.min−1) | 49.77 ± 3.48 | 46.71 ± 3.76* |
| Anxiety score | 37 ± 6.36 | 42 ± 6.31 |
| Depression score | 12.35 ± 4.48 | 11.64 ± 4.58 |
| Raven’s Standard Progressive Matrices score | 53.7 ± 9.7 | 55.53 ± 3.63 |
| 2-back task | ||
| RT (ms) | 1190.08 ± 242.9 | 1081.41 ± 230.09* |
| Accuracy | 0.70 ± 0.17 | 0.79 ± 0.17* |
| Flanker task | ||
| Congruent RT (ms) | 486.43 ± 108.71 | 463.37 ± 106.29 |
| Congruent accuracy | 0.69 ± 0.19 | 0.70 ± 0.19 |
| Incongruent RT (ms) | 503.47 ± 118.1 | 470. 67 ± 115.64* |
| Incongruent accuracy | 0.65 ± 0.19 | 0.67 ± 0.19 |
| Local-Global task | ||
| Non-switching RT (ms) | 901.65 ± 293.26 | 836.14 ± 242.53* |
| Non-switching accuracy | 0.90 ± 0.15 | 0.91 ± 0.14 |
| Switching RT (ms) | 1100.84 ± 332.42 | 1050.04 ± 275.63 |
| Switching accuracy | 0.86 ± 0.14 | 0.86 ± 0.14 |
VO2max, maximal oxygen consumption; RT, response time.
*
p ≤ 0.05.