Table 4.
Percent of the variance in physiological heat strain explained by meteorological parameters in individuals who work in the heat. Hyphen (-) indicates no statistically significant predictor.
| Physiological heat strain parameters | Variance explained in stepwise regression (%) |
||||
|---|---|---|---|---|---|
| Total | Air temperature | Relative humidity | Wind speed | Solar radiation | |
| Core body temperature | 1.6 | 1.0 | 0.4 | - | 0.2 |
| Mean body temperature | 36.6 | 33.3 | - | 3.3 | - |
| Mean skin temperature | 42.7 | 39.1 | - | 3.2 | 0.4 |
| Heart rate | 7.6 | 3.7 | 0.2 | 0.1 | 3.6 |
| Dehydration magnitude (via urine specific gravity) | 2.2 | 2.2 | - | - | - |
| Dehydration magnitude (via urine color) | 7.0 | 4.0 | - | 2.0 | 1.0 |