Table 1 Participant characteristics
|  | All (n = 20) | Males (n = 13) | Females (n = 7) |
|---|---|---|---|
Age (years) | 21.4 ± 3.2 | 21.6 ± 3.9 | 20.9 ± 1.0 |
Height (cm) | 169.4 ± 7.4 | 173.8 ± 5.0 | 161.3 ± 3.2 |
Weight (kg) | 64.5 ± 15.3 | 72.1 ± 13.8 | 50.4 ± 3.5 |
Body mass index (kg/m2) | 22.3 ± 4.2 | 23.9 ± 4.4 | 19.4 ± 0.8 |
Dominant hand (n) | |||
 Right | 19 | 13 | 6 |
 Left | 1 | 0 | 1 |
Time of smartphone use per day (h) | 4.9 ± 2.1 | 5.7 ± 2.1 | 3.4 ± 1.2 |
Time of typing per day (h) | 1.0 ± 1.6 | 1.2 ± 2.0 | 0.6 ± 0.3 |