Table 3.
HRV parameters and inflammatory markers by time (Mean ± SD) a,b
| HRV measures | Baseline | Post | p Value c | Next morning | p Value d |
|---|---|---|---|---|---|
| Heart rate(bpm) |
69.0(14.0) |
71.6(12.5) |
0.061 |
68.4(10.7) |
0.916 |
| SDNN(msec) |
53.1(25.4) |
47.9(20.1) |
0.026 |
51.8(24.1) |
0.149 |
| rMSSD(msec) |
28.6(17.9) |
28.2(20.0) |
0.429 |
28.5(19.3) |
0.594 |
| LF(msec2) |
1164(1366) |
961(1020) |
0.039 |
1101(1309) |
0.115 |
| HF(msec2) |
431(680) |
518(996) |
0.644 |
440(753) |
0.754 |
| CRP(mg/L) |
1.89(2.03) |
2.04(1.80) |
0.371 |
2.53(2.40) |
0.036 |
| Lymphocytes(k/μl) |
2.06(5.12) |
2.16(5.61) |
0.079 |
2.02(5.65) |
0.451 |
| Red blood cells(M/μl) |
4.91(0.38) |
4.83(0.33) |
0.020 |
4.91(0.39) |
0.746 |
| White blood cells(k/μl) |
6.80(1.57) |
7.33(1.91) |
0.010 |
7.14(2.35) |
0.145 |
| Neutrophils(k/μl) |
3.96(1.23) |
4.34(1.51) |
0.031 |
4.33(1.98) |
0.031 |
| Monocytes(k/μl) |
0.55(0.16) |
0.59(0.18) |
0.094 |
0.56(0.18) |
0.761 |
| Basophils(k/dl) |
0.03(0.01) |
0.03(0.01) |
0.591 |
0.03(0.01) |
0.577 |
| Eosinophils(k/μl) |
0.25(0.20) |
0.24(0.23) |
0.781 |
0.25(0.27) |
0.424 |
| Platelets(k/μl) | 217(35) | 222(36) | 0.026 | 218(39) | 0.577 |
aExposure to SHS occurred from baseline to post.
bUnadjusted Means(SDs).
cComparison between baseline and post using linear mixed regression models for HRV parameters(N = 194), CRP(N = 100) and whole blood counts(N = 104) after adjusting for circadian variation, BMI and age.
dComparison between baseline and next-morning using linear mixed regression models HRV parameters(N = 187), CRP(N = 94) and whole blood counts(N = 98) after adjusting for circadian variation, BMI and age.