TABLE 1.

Subject characteristics

	Before bed rest			After bed rest
	CON	FDR	aP	CON	FDR	bP	cP
Age (years)	25 ± 0.2	26.1 ± 1	ns	—	—	nm	nm
VO2max (ml O2/kg/min)	43.5 ± 1.5	39.1 ± 1.9	ns	42.8 ± 1.1	37.5 ± 2.0	ns	ns
VO2max (ml/min)	3,659 ± 125	3,405 ± 162	P < 0.05	3,527 ± 101	3,190 ± 160	ns	ns
Fasting arterial glucose (mmol/l)	5.3 ± 0.1	5.5 ± 0.1	ns	5.1 ± 0.1	5.2 ± 0.1	P < 0.05	P < 0.05
Weight (kg)	82.5 ± 2.3	84.0 ± 3.3	ns	82.2 ± 2.3	83.6 ± 3.2	ns	ns
Height (m)	1.85 ± 0.01	1.84 ± 0.02	ns	—	—	nm	nm
BMI (kg/m2)	24.1 ± 0.5	24.9 ± 0.9	ns	23.9 ± 0.5	24.8 ± 0.9	ns	ns
Total fat mass (kg)	14.3 ± 1.6	21.6 ± 2.5	P < 0.05	14.7 ± 1.8	21.5 ± 2.7	ns	ns
Total lean mass (kg)	63.8 ± 1.1	58.6 ± 1.5	P < 0.05	63.6 ± 1.1	58.4 ± 1.5	ns	ns
Whole body fat percentage (%)	17.4 ± 1.7	25.0 ± 2.3	P < 0.05	17.1 ± 1.6	24.9 ± 2.5	ns	ns
Trunk fat mass/total fat mass	0.48 ± 0.1	0.58 ± 0.001	P < 0.05	0.50 ± 0.01	0.58 ± 0.01	ns	ns
Leg fat mass/total fat mass	0.37 ± 0.1	0.29 ± 0.01	P < 0.05	0.37 ± 0.01	0.29 ± 0.01	ns	ns
Waist/hip ratio	0.85 ± 0.01	0.88 ± 0.02	ns	0.86 ± 0.01	0.87 ± 0.02	ns	ns
Abdominal skinfold (mm)	21 ± 1.8	25 ± 3.0	ns	21 ± 1.6	23 ± 2.0	ns	ns
Femoral skinfold (mm)	16 ± 1.5	16 ± 2.0	ns	15 ± 1.4	16 ± 2.0	ns	ns

Data are mean ± SE.

^aP, significant difference between the groups before bed rest (P < 0.05).

^bP, significant difference before vs. after bed rest within CON, P < 0.05.

^cP, significant difference before vs. after bed rest within FDR, P < 0.05. ns, not significant; nm, not measured.