Energy expenditure and physical activity level before and during bed rest
| . | Daily living . | During bed rest . | |||||
|---|---|---|---|---|---|---|---|
| CON . | FDR . | aP . | CON . | FDR . | bP . | cP . | |
| Resting energy expenditure (REE) (kJ/day/kg) | 99 ± 1.0 | 96 ± 2.7 | ns | 101 ± 1.4 | 97 ± 2.4 | ns | ns |
| Activity energy expenditure (AEE) (kJ/day/kg) | 83 ± 7 | 102 ± 8 | ns | 26 ± 4 | 27 ± 3 | P < 0.0001 | P < 0.0001 |
| Total energy expenditure (TEE) (kJ/day/kg) | 207 ± 8 | 218 ± 12 | ns | 146 ± 5 | 138 ± 4 | P < 0.0001 | P < 0.0001 |
| Daily physical activity level (PAL) (TEE/REE) | 2.1 ± 0.1 | 2.3 ± 0.1 | ns | 1.5 ± 0.05 | 1.4 ± 0.03 | P < 0.0001 | P < 0.0001 |
| Sitting (hours/day) | 7.2 ± 0.6 | 6.5 ± 0.9 | ns | — | — | — | — |
| . | Daily living . | During bed rest . | |||||
|---|---|---|---|---|---|---|---|
| CON . | FDR . | aP . | CON . | FDR . | bP . | cP . | |
| Resting energy expenditure (REE) (kJ/day/kg) | 99 ± 1.0 | 96 ± 2.7 | ns | 101 ± 1.4 | 97 ± 2.4 | ns | ns |
| Activity energy expenditure (AEE) (kJ/day/kg) | 83 ± 7 | 102 ± 8 | ns | 26 ± 4 | 27 ± 3 | P < 0.0001 | P < 0.0001 |
| Total energy expenditure (TEE) (kJ/day/kg) | 207 ± 8 | 218 ± 12 | ns | 146 ± 5 | 138 ± 4 | P < 0.0001 | P < 0.0001 |
| Daily physical activity level (PAL) (TEE/REE) | 2.1 ± 0.1 | 2.3 ± 0.1 | ns | 1.5 ± 0.05 | 1.4 ± 0.03 | P < 0.0001 | P < 0.0001 |
| Sitting (hours/day) | 7.2 ± 0.6 | 6.5 ± 0.9 | ns | — | — | — | — |
Data are mean ± SE.
aP, significant difference between the groups before bed rest.
bP, significant difference before vs. after bed rest within CON.
cP, significant difference before vs. after bed rest within FDR. ns, nonsignificant. REE, AEE, TEE, and PAL based on Actiheart recordings during 4 days of daily living 3 weeks before bed rest. Hours sitting per day based on International Physical Activity Questionnaire.