Table 4.

Descriptive statistics of sleep quality at pre- and post-test for the total sample and by group.

Variables	Samples	Pre-test		Post-test
		$\overline{x}$	SD	$\overline{x}$	SD
Global PSQI	Control group	4.52	2.79	4.13	2.44
	Exercise group	5.52	3.33	3.56	2.71
Subjective sleep quality	Control group	0.60	0.65	0.59	0.32
	Exercise group	1.13	0.81	0.78	0.52
Sleep latency	Control group	0.74	0.81	0.57	0.50
	Exercise group	1.35	0.88	0.78	0.73
Sleep duration	Control group	0.78	0.93	0.65	0.95
	Exercise group	0.43	0.59	0.22	0.51
Sleep efficiency	Control group	1.00	1.16	1.13	1.21
	Exercise group	0.13	0.45	0.34	0.57
Sleep disturbances	Control group	0.52	0.59	0.51	0.50
	Exercise group	0.78	0.79	0.34	0.57
Use of sleep medications	Control group	0.30	0.63	0.00	0.00
	Exercise group	0.00	0.00	0.00	0.00
Daytime dysfunction	Control group	0.69	0.82	0.47	0.73
	Exercise group	1.69	1.02	1.08	1.04