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Table 2 Changes in vigilance, state anxiety and self rated sleep quality before and after 9 days of yoga intervention

From: Changes in vigilance, self rated sleep and state anxiety in military personnel in India following yoga

Variables

Yoga intervention

Before

After

t value

χ2 value

Cohen’s d/Cramer’s V

P value

Vigilance scores

284.46 ± 45.98

307.15 ± 22.13

15.42

0.63b

< 0.001

State anxiety scores

38.61 ± 9.68

30.98 ± 9.03

21.33

0.82b

< 0.001

Time taken to fall asleep (min)

29.69 ± 21.22

20.27 ± 25.25

7.43

0.40b

< 0.001

Total duration of nocturnal sleep (min)

276.68 ± 63.25

308.20 ± 51.02

11.54

0.55b

< 0.001

Number of arousals during the night

1.34 ± 1.04

0.88 ± 0.85

11.18

0.48b

< 0.001

Duration of daytime sleep (min)

72.86 ± 42.25

44.57 ± 35.89

15.66

0.72b

< 0.001

Feeling of being rested in the morning (number of participants who reported ‘yes’)a

476

645

115.47

0.28c

< 0.001

Sleeping in the day (number of participants who reported ‘yes’)a

599

504

39.78

0.17c

< 0.001

  1. Values are group mean ± SD
  2. aThe remainder of the participants reported ‘No’
  3. bCohen’s d
  4. cCramer’s V