Table 1 Body mass and bone densitometry in strict head-down tilt bed rest with or without CO2 exposure.

From: Bone metabolism during strict head-down tilt bed rest and exposure to elevated levels of ambient CO2

 

Control Pre (n = 8)

Control Post 60 Days (n = 8)

CO2 Pre (n = 11)

CO2 Post 30 Days (n = 11)

Femoral Neck BMD (g/cm2)

1.144 ± 0.147

1.129 ± 0.144

1.028 ± 0.147

1.025 ± 0.139

Whole Body BMC (g)

3230 ± 497

3195 ± 471a

2694 ± 480

2702 ± 472

Whole Body BMD (g/cm2)

1.321 ± 0.082

1.328 ± 0.086

1.251 ± 0.102

1.256 ± 0.109

Body mass (kg)

80.1 ± 12.7

80.2 ± 13.2

70.9 ± 8.6

69.2 ± 7.9

  1. Data are means ± SD.
  2. aStatistically different from before bed rest, as determined by two-way repeated measures ANOVA analysis, p < 0.05.
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