TABLE 2.
The RMS equation was applied to the peak pressure values collected for different test regimes and parts of the head.
| Front | Back | |||||
|---|---|---|---|---|---|---|
| Designed pressure level (kPa) | No helmet | Helmet | Helmet liner | No helmet | Helmet | Helmet liner |
| 27.5 | 42.1* | 44.8* | 29.7* | 28.9 | 42.7 | 28.3 |
| 55.1 | 77.2* | 85.5 | 51.7* | 52.4 | 87.6* | 44.8 |
| 82.7 | 87.6* | 124.8* | 84.1* | 68.3 | 101.9 | 71 |
| 110 | 150.2* | 157.0* | 182.1* | 126.9 | 126.8 | 99.3 |
| 138 | 193.1* | 218.3* | 178.6* | 129.6 | 166.2 | 147.6 |
| 165 | 232.1* | 278.9* | 179.0* | 146.9 | 198.4 | 170.3 |
Legend (kPa): 
*Higher value when comparing front and back.
A legend indicates differences in the magnitude of overpressure within each designated pressure level. Values of the higher magnitude comparing the front and back of the head are indicated with an * to show the difference, if values were equal then neither have an *.