Table 9.
Overview over the experimental results of knee power for stair ascent and stair descent.
| Study | Subjects (mean height ± SD (m), mean weight ± SD (kg)) | Riser × tread (cm × cm) | Type | I (W/kg) | J (W/kg) | K (W/kg) | L (W/kg) | Range (W/kg0 |
|---|---|---|---|---|---|---|---|---|
| Riener et al. [24] and Joudzadeh et al. [25] | 10 (1.79 ± 0.05, 82.2 ± 8.5) | 13.8 × 31.0 | Ascent | 2.322 | 0.071 | 0.647 | -0.309 | 2.631 |
| Descent | 0.256 | -0.678 | -0.429 | -3.788 | 4.044 | |||
| 17.0 × 29.0 | Ascent | 2.538 | 0.055 | 0.696 | -0.312 | 2.850 | ||
| Descent | 0.305 | -1.029 | -0.453 | -4.141 | 4.446 | |||
| 22.5 × 25.0 | Ascent | 2.887 | 0.049 | 0.811 | -0.288 | 3.175 | ||
| Descent | -0.212 | -1.255 | -0.472 | -4.843 | 4.631 | |||
|
| ||||||||
| Mcfadyen and Winter [142] | 3 (—, —) | 22.0 × 28.0 | Ascent | 2.742 | -0.228 | 1.020 | -0.739 | 3.481 |
| Descent | 0.569 | -3.621 | -1.326 | -5.485 | 6.054 | |||
|
| ||||||||
| Musselman [27] | 17 (1.85 ± 0.12, 82 ± 14) | 15.0 × 26.0 | Ascent | 1.044 | -0.223 | 0.447 | -0.265 | 1.309 |
| Descent | 0.037 | -0.248 | -0.558 | -2.077 | 2.114 | |||
I: first peak knee generation power; J: first peak knee absorption power; K: second peak knee generation power; L: second peak knee absorption power.