Execution biceps brachii:
- The patient is in sitting position
- Ask the patient to flex the elbows to 90° and to supinate maximally.
- The examiner then applies a downward pressure, while the patient is asked to resist the movement
Execution wrist extensors:
- The patient is in sitting position with the wrist over the edge of the table and the ventral aspect of the forearm on the treatment table
- The examiner applies a downward pressure into wrist flexion and the patient is asked to resist the movement
Positive Outcome: Decreased strength rated with the MRC scale compared to the other side
| Study |
Reliability |
Sn | Sp | LR+ |
LR- |
| Wainner et al. (2003): Biceps brachii |
Inter к= 0.69 |
24 | 94 | 3.7 |
0.82 |
| Wainner et al. (2003): Extensor carpi radialis longus/brevis |
Inter к= 0.63 |
12 | 90 | 1.2 |
0.98 |
| Schmid et al. (2009) |
Inter к= 0.9 |
NA | NA | NA |
NA |
