TABLE 2.

Median, Quartile 1 (Q1) and Quartile 3 (Q3) of the Pittsburgh sleep quality index, International Physical Activity Questionnaire, Hospital Anxiety and Depression Scale, Motion Sickness Susceptibility Questionnaire, and updating orientation results by age (young adults ≤40 years versus middle age >40 years).

Comparisons by age group
	≤40 years (n = 42) Median (Q1–Q3)	>40 years (n = 39) Median (Q1–Q3)	Z value	Bilateral p value
Pittsburgh sleep quality index
Sleep Efficiency	1 (1–2)	2 (1–3)	−2.216	0.030
Sleep Latency	1 (0–2)	1 (0–2)	−0.325	0.759
Sleep Quality	3 (2–3)	3 (2–5)	−2.275	0.025
Total score	5 (3–7)	6 (4–9)	−2.270	0.023
International Physical Activity Questionnaire (met-minutes per week)
Vigorous activity	960 (0–1920)	80 (0–960)	1.377	0.191
Moderate activity	360 (0–840)	0 (0–720)	1.685	0.113
Walking	693 (198–1386)	380 (99–693)	1.707	0.089
Total activity	2492 (678–4095)	990 (405–3135)	1.722	0.086
Hospital Anxiety and Depression Scale
Anxiety score	3.5 (1–6)	3 (0–7)	0.418	0.682
Depression score	1 (0–2)	1 (0–3)	−0.616	0.556
Total score	4.5 (2–9)	5 (1–11)	0.123	0.906
Motion sickness susceptibility questionnaire
As a child (before age 12)	3 (1.1–5.1)	1.1 (0–4)	2.635	0.008
Over the last 10 years	2 (0–3.3)	0 (0–1.8)	2.924	0.004
Total score	4.75 (2–9)	2 (0–5.5)	2.964	0.002
Updating Orientation Test
Average estimation error
First set of rotations	18° (9°–27°)	18° (9°–27°)	0.587	0.575
Second set of rotations	18° (9°–27°)	18° (9°–27°)	0.222	0.832
All rotations	18° (9°–22.5°)	13.5° (9°–27°)	0.497	0.628
45° rotations	11.2° (11.2°–22.5°)	11.2° (0°–22.5°)	−0.468	0.655
90° rotations	18° (9°–27°)	18° (9°–18°)	0.722	0.489
135° rotation	22.5 (0°–45°)	0° (0°–45°)	0.179	0.876
Total correct estimations	7 (5–8)	7 (5–8)	−0.311	0.759

Comparisons were performed using Mann-Whitney U test. Significant values are highlighted in bold.