Table 3.
Multiple linear regression between frequency domain indices and adjusted variables WC, HOMA-IR, insulin, blood glucose, MVPA, ST, TEV, carbohydrate, and lipid.
| HF (nu) | LF (nu) | LF/HF | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variables | Adjusted β | 95% CI | p value | Adjusted β | 95% CI | p value | Adjusted β | 95% CI | p value |
| WC (cm) | −0.685 | 0.169–1.201 | 0.010∗ | 2.792 | −2.984–8.569 | 0.337 | −0.002 | −0.007–0.002 | 0.282 |
| HOMA-IR (mg/dl) | −14.989 | −26.273–−3.705 | 0.010∗ | 8.670 | −6.480–23.819 | 0.257 | 0.141 | −0.231–−0.051 | 0.003∗ |
| Insulin (ui) | −0.038 | 0.924 | 0.237 | 0.589 | −0.206 | 0.647 | |||
| Blood glucose (mg/dl) | — | — | — | — | −0.205 | 0.518 | |||
| MVPA (min/day) | −0.196 | 0.381 | 0.181 | 0.447 | — | — | — | ||
| ST (min/day) | −0.318 | 0.169 | 0.687 | −0.015–1.390 | 0.055 | −0.459 | 0.085 | ||
| TEV (kcal/day) | 0.007 | 0.954 | 0.034 | −0.017–0.858 | 0.183 | — | — | ||
| Carbohydrate (%) | — | — | — | — | — | — | −0.008 | −0.068–0.053 | 0.803 |
| Lipid (%) | — | 0.699 | 3.543 | −2.832–9.917 | 0.270 | −0.030 | −0.106–0.046 | 0.043∗ | |
LF = low frequency; HF = high frequency; LF/HF = low frequency/high frequency ratio, nu: normalized units; WC = waist circumference; HOMAR-IR = Homeostasis Evaluation Model; MVPA = average of minutes per day spent in vigorous physical activity (>100 mg); ST = sedentary time; TEV = total energy value (kcal/day). ∗p < 0.05.