Table 1 Study sample parameters.

Age, M ± SD

22.8 ± 2.8

22.6 ± 2.7

23.1 ± 2.9

p =.366^§

Sex, n (%)

p =.823⁺

Female

40 (50)

21 (52)

19 (48)

Male

40 (50)

19 (48)

21 (52)

Study Cycle, n (%)

p =.423⁺

Bachelor

62 (78)

33 (83)

29 (73)

Master

18 (22)

7 (17)

11 (27)

Ice Bathing - yes, n (%)

23 (29)

8 (20)

15 (38)

p =.137⁺

Ishihara test, M ± SD

97.7 ± 3.7

98.2 ± 3.4

97.2 ± 4.0

p =.248^§

World Health Organization Quality of Life – Short Form (WHOQOL-BREF)

physical health, M ± SD

80.5 ± 11.4

80.2 ± 11.7

80.9 ± 11.2

p =.784^§

psychological health, M ± SD

71.8 ± 10.8

72.4 ± 10.9

71.1 ± 10.6

p =.610^§

social health, M ± SD

74.4 ± 16.7

74.4 ± 17.3

74.4 ± 16.1

p =.999^§

environmental health, M ± SD

83.3 ± 7.6

82.9 ± 8.2

83.8 ± 6.9

p =.616^§

Resonant breathing rates

3.6 breaths per minute, n (%)

9 (11)

6 (15)

3 (8)

p =.616⁺

5.6 breaths per minute, n (%)

57 (71)

26 (65)

31 (78)

8.2 breaths per minute, n (%)

14 (18)

8 (20)

6 (15)

Selected light specifications for the visual pacemaker

Light color, n (%)

purple

8 (10)

5 (13)

3 (8)

p =.263⁺

blue

16 (20)

8 (20)

8 (20)

green

16 (20)

6 (15)

10 (25)

yellow

7 (9)

1 (3)

6 (15)

orange

28 (35)

17 (43)

11 (28)

red

5 (6)

3 (8)

2 (5)

Brightness, dim level (%)

42 ± 18

41 ± 19

43 ± 17

p =.584^§