| Hip flexion | Knee flexion | Ankle dorsiflexion | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SOL | GAS | VAS | RF | SOL | GAS | VAS | RF | SOL | GAS | VAS | RF |
Initial contact |  | ↑ | ↓ | ↑ |  | ↑ | ↓ | ↓↓ |  | ↓ | ↓ | ↓↓ |
Loading response | ↓ | ↑ | ↓ | ↓ | ↓ | ↑ | ↓ | ↓ | ↓ |  |  | ↓ |
Mid stance | ↓ | ↑ |  | ↓ | ↓ | ↑ |  | ↓ | ↓ | ↓ |  | ↓ |
Terminal stance | ↓ | ↑ |  | ↓ | ↓ | ↑ |  | ↓↓ | ↓ | ↓ |  | ↓ |
Pre swing | ↓ |  | ↓↓ | ↓↓ | ↓ |  | ↓↓ | ↓↓ | ↓ |  | ↓↑ | ↓ |
Initial swing |  | ↑↑ | ↓↓ | ↓↓ |  | ↑↑ | ↓↓ | ↓ | ↓↓ | ↓↓ |  |  |
Mid swing | ↓ | ↑↑ |  |  | ↓↓ | ↑↑ |  |  | ↓↓ | ↓↓ |  |  |
Terminal swing |  |  |  |  |  |  |  |  |  | ↓ |  |  |