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Tread width, tread depth, shoe hardness, and shoe roughness for all shoes considered in this study
| Work shoe |
Athletic shoe |
|||||
|---|---|---|---|---|---|---|
| Full tread | Half tread | No tread | Full tread | Half tread | No tread | |
| Tread channel width (mm) | 2.5 | 2.4 | N/A | 5.5 | 3.5 | N/A |
| Tread depth (mm) | 3.0 | 1.5 | 0 | 4.0 | 2.0 | 0.0 |
| Shoe hardness (Shore A) | 58 | 71 | 68 | 85 | 83 | 79 |
| Roughness (Ra) (μm) | 7.24 | 5.74 | 4.44 | 5.05 | 5.24 | 4.43 |
