Table 1.

Polysomnography sleep-stage values for the sleep rested session (mean ± SD)

	Sleep time (min)	% Total sleep time	Obtained by % of participants
Total sleep time	469.43 ± 38.7
Stage 1	25.72 ± 10.4	5.53 ± 2.4	100%
Stage 2	253.15 ± 34.1	53.87 ± 5.2	100%
SWS	90.35 ± 28.4	19.41 ± 6.7	100%
REM	100.20 ± 24.8	21.20 ± 4.3	100%

SWS, NREM stage 3 and 4.