Table 2.
Correlations between VOC exposure and HRV parameters.
| Parameters | Subject | − d | + e | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | |||
| Sex (M: male, F: female) | M | F | F | F | M | M | F | F | ||
| Age (years) | 39 | 62 | 33 | 46 | 31 | 49 | 35 | 54 | ||
| VOC vs. HF | −0.35 ** a | 0.19 * | −0.03 | −0.00 | −0.34 ** | −0.04 | 0.06 | −0.13 | 6 (2) | 2 (1) |
| ΔVOC vs. HF | −0.38 ** | 0.01 | 0.11 | −0.32 ** | 0.07 | −0.03 | −0.24 * | −0.30 ** | 5 (4) | 3 (0) |
| d+VOC vs. HF | −0.46 ** | −0.17 | 0.13 | −0.37 * | 0.02 | 0.04 | −0.38 * | −0.45 ** | 5 (4) | 3 (0) |
| d−VOC vs. HF | 0.31 * b | −0.08 | 0.09 | 0.45 ** | 0.30 ** | 0.39 ** | 0.15 | 0.34 ** | 1 (0) | 7 (5) |
| VOC vs. LF/HF | 0.06 | −0.22 * | 0.01 | −0.16 | 0.26 ** | −0.04 | −0.06 | 0.01 | 4 (1) | 4 (1) |
| ΔVOC vs. LF/HF | 0.08 | 0.11 | 0.02 | 0.28 ** | −0.09 | −0.08 | 0.29 ** | 0.04 | 2 (0) | 6 (2) |
| d+VOC vs. LF/HF | 0.04 | 0.10 | 0.27 | 0.45 ** | 0.04 | −0.18 | 0.27 | 0.12 | 1 (0) | 7 (1) |
| d−VOC vs. LF/HF | 0.13 | −0.21 | −0.13 | −0.33 * | −0.27 ** | −0.30 * | −0.21 | −0.08 | 7 (3) | 1 (0) |
| Temp vs. HF | −0.01 | 0.38 ** | −0.07 | 0.13 | - c | 0.15 | 0.21 * | −0.40 ** | 3 (1) | 4 (2) |
| RH vs. HF | 0.10 | −0.61 ** | 0.15 | 0.18 | - | −0.21 * | 0.16 | 0.38 ** | 2 (2) | 5 (1) |
| Temp vs. LF/HF | 0.20 * | −0.12 | −0.02 | −0.03 | - | −0.04 | −0.12 | 0.09 | 5 (0) | 2 (1) |
| RH vs. LF/HF | −0.08 | −0.15 | −0.14 | −0.22 * | - | 0.18 | −0.20 * | −0.10 | 6 (2) | 1 (0) |
a ** Spearman rank correlation, p < 0.01; b * Spearman rank correlation, p < 0.05; c Data not obtained; d − Numbers of the subjects showing negative correlation (significant); e + Numbers of the subjects showing positive correlation (significant).