Execution:
- The patient is in sitting position
- Ask the patient to abduct the shoulders to 90° and apply downward pressure
Positive Outcome: Decreased strength rated with the MRC scale compared to the other side
| Study |
Reliability |
Sn | Sp | LR+ |
LR- |
| Wainner et al. (2003): Deltoids |
Inter к= 0.67 |
24 | 89 | 2.1 |
0.86 |
| Schmid et al. (2009) |
Inter к= 0.53 |
NA | NA | NA |
NA |
