Table 3 Polysomnographic characteristics during baseline, baseline fasting and Ramadan

Total sleep time (min)

6.2 ± 0.8

6.1 ± 1.0

5.9 ± 0.7

Sleep Latency

29.6 ± 24.2

33.7 ± 33.6

32.8 ± 29.3

REM Latency

80.6 ± 26.9

108.9 ± 47.8

73.5 ± 40.1

Stage N1%

5.2 ± 2.6

6.2 ± 3.7

5.5 ± 2.4

Stage N2%

58.7 ± 4.6

65.1 ± 5.3

65.2 ± 6.1

Stage N3%

10.7 ± 6.3

11.0 ± 6.1

10.7 ± 7.1

Stage REM%

25.6 ± 4.8

17.7 ± 8.1*

18.6 ± 10.7*

REM cycles

4.1 ± 1

3.9 ± 0.9

3.8 ± 1.3

Stage shifts

69.3 ± 14.8

73.5 ± 19.5

69.1 ± 16.3

Arousal Index

8.5 ± 3.9

9.1 ± 3.8

8.9 ± 3.6