Table 4 Analysis of covariance in KOSS and HRV (Time domain)a
From: Factors related to heart rate variability among firefighters
Unit; Mean (S.D.) | ||
|---|---|---|
Variables | SDNN | RMSSD |
Physical environment | ||
Low | 37.47 (13.42) | 28.91 (15.18) |
High | 38.62 (15.65) | 29.75 (16.13) |
Job demand | ||
Low | 38.61 (14.73) | 30.96 (16.41) |
High | 37.64 (14.59) | 28.04 (14.97) |
Insufficient job control | ||
Low | 38.40 (15.82) | 29.79 (17.59) |
High | 37.84 (13.70) | 29.02 (14.08) |
Interpersonal conflict | ||
Low | 37.92 (14.27) | 27.86 (13.66) |
High | 38.09 (14.69) | 29.46 (15.83) |
Job insecurity | ||
Low | 38.85 (14.78) | 30.21 (16.81) |
High | 37.39 (14.53) | 28.59 (14.60) |
Organizational system | ||
Low | 38.84 (14.81) | 30.52 (16.92) |
High | 37.56 (14.54) | 28.56 (14.76) |
Lack of reward | ||
Low | 39.40 (15.75) | 31.26 (17.61) |
High | 37.45 (14.08) | 28.45 (14.62) |
Occupational climate | ||
Low | 39.54 (15.25)* | 31.28 (17.50)* |
High | 36.87 (14.05) | 27.76 (13.84) |
Total | ||
Low | 38.51 (15.06) | 30.41 (17.28) |
High | 37.65 (14.24) | 28.30 (13.89) |