Table 1.
Results of the linear mixed model analysis for sleep stages with energy expenditure
| Minutes |
Percent |
|||||
|---|---|---|---|---|---|---|
| Coefficient | Standard error | P value | Coefficient | Standard error | P value | |
| RMR | ||||||
| Stage 2 | 1.7 | 0.85 | 0.051 | 1.11 | 5.53 | 0.84 |
| SWS | 0.81 | 0.99 | 0.42 | −2.06 | 4.98 | 0.68 |
| REM | 0.06 | 1.29 | 0.96 | −4.90 | 6.47 | 0.45 |
| REM periods | −29.87 | 25.77 | 0.25 | −26.30 | 25.749 | 0.31 |
| RQ | ||||||
| Stage 2 | 1.06E-04 | 2.48E-04 | 0.67 | −2.14E-03 | 1.59E-03 | 0.19 |
| SWS | 1.78E-04 | 2.90E-04 | 0.54 | −1.70E-03 | 1.44E-03 | 0.24 |
| REM | 3.21E-04 | 3.78E-04 | 0.40 | −1.37E-03 | 1.86E-03 | 0.47 |
| REM periods | 4.66E-03 | 7.55E-03 | 0.54 | 5.46E-03 | 7.42E-03 | 0.46 |
Sleep stages were expressed as minutes and percent total sleep time. Analyses were adjusted for age, sex, weight, and sleep phase condition. RMR, resting metabolic rate; RQ, respiratory quotient; SWS, slow wave sleep; REM, rapid eye movement sleep.