TABLE 5.

Overview of periodic leg movement outcomes in each level of both independent variables (i.e., activity and PO₂).

	pNAMB	NBR	HAMB	HBR
	M ± SD (n = 8)	M ± SD (n = 8)	M ± SD (n = 10)	M ± SD (n = 12)
Non-imputed data
PLMSI (# of events/h of TST)	0.08 ± 0.21	0.29 ± 0.70	0.46 ± 0.63	2.36 ± 2.85
	pNAMB	NBR	HAMB	HBR
	M ± SD (n = 12)	M ± SD (n = 12)	M ± SD (n = 12)	M ± SD (n = 12)
Imputed data
PLMSI (# of events/h of TST)	0.16 ± 0.22	0.42 ± 0.60	0.52 ± 0.59	2.36 ± 2.85

Mean (M) and standard deviation (SD) are depicted for both the data set with- and the data set without imputed data. Statistical analysis was performed on the imputed dataset only.

*Indicates a significant interaction effect between PO₂ and activity, +indicates a significant main effect of PO₂, ^ indicates a significant main effect of activity; PO₂, partial pressure of oxygen; pNAMB, pseudo normobaric normoxic ambulatory; NBR, normobaric normoxic bed rest; HAMB, normobaric hypoxic ambulatory; HBR, normobaric hypoxic bed rest; PLMSI, periodic leg movement during sleep index.