TABLE 1.
Characteristics of the experimental shoe condition.
| Measurement method | Characteristic | Running shoe models | |
|---|---|---|---|
| IRS | NRS | ||
| Basic information | Mass(g) | 260.9 | 205.0 |
| Rearfoot thickness (mm) | 32 | 18 | |
| Forefoot thickness (mm) | 16 | 11.5 | |
| Offset (mm) | 16 | 6.5 | |
| Rearfoot width (mm) | 81.67 | 80.6 | |
| Forefoot width (mm) | 95.6 | 100 | |
| Midsole material | EVA | EVA | |
| Midsole hardness (Asker C) | Up to 40 C | 55 C | |
| middle 50 C | |||
| under 40 C | |||
| Outsole material | Rubber | Rubber | |
| Outsole hardness (Asker) | 62 A | 62 A | |
| Rearfoot impact | Peak acceleration(g) | 9.9 | 13.7 |
| Energy return (%) | 56.61 | 64.53 | |
| Forefoot flexion | Peak torque (Nm) | 13.49 | 9.79 |
| Stiffness (Nm/deg) | 0.307 | 0.169 | |
| Energy feedback (%) | 24.78 | 27.14 | |