Table 2.
Effects of 2 weeks of bed rest and 2 weeks of physical retraining on physical characteristics of the Control group (Old_Ctrl) and Interventions group (Old_Int) of older adults and Young subjects
| Old_Ctrl (n = 8) | Old_Int (n = 8) | Young (n = 7) | Significance | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pre‐BR | Post‐BR | R + 14 | Pre‐BR | Post‐BR | R + 14 | Pre‐BR | Post‐BR | R + 14 | Group | Time | G × T | |
| BM (kg) | 79.6 ± 10.5 | 77.6 ± 10.4 | 79.5 ± 10.1 | 80.3 ± 14.7 | 77.35 ± 13.6 | 79.2 ± 13.7 | 74.8 ± 8.8 | 71.6 ± 8.3 | 74.4 ± 8.1 | 0.590 | <0.001 | 0.243 |
| FFM (kg) | 59.8 ± 6.9 | 56.7 ± 6.8 | 60.4 ± 6.9 | 63.8 ± 11.1 | 59.3 ± 7.9 | 60.6 ± 10.4 | 60.9 ± 3.9 | 56.3 ± 3.8 | 57.8 ± 4.4 | 0.709 | <0.001 | 0.131 |
| FM (kg) | 19.9 ± 4.9 | 20.9 ± 4.8 | 19.1 ± 4.6 | 16.4 ± 6.9 | 18.1 ± 8.8 | 18.6 ± 7.2 | 14.0 ± 6.2 | 15.3 ± 7.0 | 16.6 ± 6.6 | 0.370 | 0.066 | 0.173 |
| QF (cm3) | 1663 ± 173 | 1524 ± 197 | 1613 ± 157 | 1702 ± 298 | 1561 ± 246 | 1648 ± 233 | 1988 ± 270 | 1867 ± 204 | 1954 ± 211 | 0.016 | <0.001 | 0.981 |
All values are means ± SD.
Pre‐BR: before bed rest; Post‐BR: after bed rest; R + 14: after physical retraining; BM: body mass; FFM: fat‐free mass; FM: fat mass; QF: quadriceps femoris muscle volume.
Significance by general linear model of the main effects of Group (Old_Ctrl vs. Old_Int vs. Young), Time (Pre‐BR vs. Post‐BR vs. R + 14) and Group × Time interaction (G × T).