Table 1.
Subject characteristics and body composition of healthy, older adults before (pre-bed rest) and after (post-bed rest) bed rest
| Pre-Bed Rest | Post-Bed Rest | Δ, % | P Value | |
|---|---|---|---|---|
| Age, yr | 67.2 ± 1.7 | |||
| Height, cm | 173.7 ± 1.7 | |||
| Weight, kg | 74.8 ± 3.7 | 73.5 ± 3.9 | −1.8 ± 1.4 | 0.26 |
| Lean mass, kg | 50.4 ± 2.9 | 48.8 ± 2.5 | −3.0 ± 1.0 | 0.03 |
| Leg lean mass, kg | 18.3 ± 1.1 | 17.5 ± 1.0 | −4.1 ± 0.9 | 0.01 |
| Trunk lean mass, kg | 23.3 ± 1.4 | 22.5 ± 1.2 | −3.3 ± 1.5 | 0.08 |
| Fat mass, kg | 21.4 ± 3.4 | 21.8 ± 3.4 | 1.9 ± 0.6 | 0.01 |
| Body fat, % | 28.8 ± 3.5 | 30.1 ± 3.3 | 5.1 ± 1.5 | 0.02 |
| Body mass index, kg/m2 | 24.7 ± 0.9 | 24.3 ± 1.1 | −1.8 ± 1.4 | 0.29 |
Values are means ± SE; n = 6 subjects in each group. P value determined from a paired t-test (pre vs. post-bed rest).