Table 1.
Intercorrelations between the wearable (1–2), longitudinal (3–6), and control (7–9) variables.
| Variable | Correlation | |||||||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
| 1. HRV uptrend | − | |||||||
| 2. HRVsd uptrend | −0.04 | − | ||||||
| 3. Stress increase | −0.09 | 0.43 ** | − | |||||
| 4. Anxiety increase | −0.00 | −0.04 | 0.24 | − | ||||
| 5. Depression increase | 0.06 | −0.03 | 0.31 * | 0.15 | − | |||
| 6. Somatisation increase | −0.03 | 0.42 ** | 0.56 *** | −0.03 | 0.09 | − | ||
| 7. TST uptrend | 0.01 | −0.01 | 0.11 | −0.22 | 0.10 | 0.09 | − | |
| 8. MVPA uptrend | −0.13 | 0.09 | −0.21 | −0.05 | 0.12 | −0.17 | −0.28 | − |
| 9. Alcohol use uptrend | −0.12 | −0.21 | −0.06 | 0.28 | 0.03 | −0.19 | −0.47 *** | 0.14 |
Note. N = 47; *** p < 0.001, ** p < 0.01, * p < 0.05, p < 0.1; HRV: Heart Rate Variability; HRVsd: Heart Rate Variability, 7-day rolling standard deviation; TST: Total Sleep Time; MVPA: Moderate-to-Vigorous Physical Activity.