Table 2.
Effect of sleep on fasting lipid profiles, blood pressure and resting heart rate following 4 nights of habitual (9 h/night) and short (4 h/night) sleep.
| Risk Factor | Habitual Sleep
|
Short Sleep
|
P-value | ||
|---|---|---|---|---|---|
| Day 1 | Day 5 | Day 1 | Day 5 | ||
| TC, mg/dLa | 181.2 ± 41.0 | 171.0 ± 35.9 | 173.7 ± 37.9 | 161.4 ± 34.8 | 0.16 |
| LDL, mg/dL | 119.2 ± 39.0 | 108.3 ± 31.7 | 113.3 ± 40.5 | 100.8 ± 29.6 | 0.29 |
| HDL, mg/dL | 51.6 ± 16.1 | 48.3 ± 14.0 | 50.3 ± 14.5 | 47.5 ± 13.5 | 0.69 |
| TG, mg/dL | 66.3 ± 35.3 | 71.9 ± 25.5 | 73.7 ± 39.5 | 65.8 ± 26.0 | 0.90 |
| SBP, mmHg | 113.9 ± 7.8 | 107.2 ± 7.3 | 109.6 ± 7.8 | 107.7 ± 7.8 | 0.07 |
| DBP, mmHg | 73.3 ± 7.3 | 68.2 ± 6.2 | 71.3 ± 7.3 | 69.1 ± 7.8 | 0.50 |
| RHR, bpm | 62.0 ± 10.4 | 60.7 ± 12.5 | 66.8 ± 12.5 | 61.9 ± 8.8 | 0.10 |
Data are raw means ± SD, n=27. The P-value reflects a main effect of sleep in a linear mixed model analysis adjusting for the effect of Day (Day 1 vs. Day 5), and thus adjusting for baseline differences as well.
a
Abbreviations used: DBP, diastolic blood pressure; HDL, high-density lipoprotein cholesterol; LDL, low-density lipoprotein cholesterol; RHR, resting heart rate; SBP, systolic blood pressure; TC, total cholesterol; TG, triglycerides.