TABLE 4.

Tracer kinetics in basal state in male study participants before and after bed rest

	Before bed rest		After bed rest
	FDR group	CON group	FDR group	CON group
n	13	20	13	20
Ra glucose (μmol · min−1 · kg FFM−1)	16.0 ± 4.7	9.7 ± 4.1*	15.0 ± 6.0	10.4 ± 3.7†
Ra glycerol (μmol · min−1 · kg FFM−1)	2.7 ± 1.4	2.8 ± 1.4	2.1 ± 1.3	2.2 ± 1.3
HIR index (μmol · min−1 · kg FFM−1 · pmol−1 · l−1)	539 ± 272	282 ± 158*	729 ± 335‡	384 ± 217§

Data are means ± SD.

*Significant difference between FDR and CON groups before bed rest, P < 0.05.

†Significant difference between FDR and CON groups after bed rest, P < 0.05.

‡Significant difference before versus after bed rest; P < 0.05.

§Log-transformed data.