Execution:
- The patient is in sitting position
- Patient abducts shoulders to about 120°
- The patient is asked to resist forward directed force
- Observe all 3 parts of the trapezius contract
Positive Outcome: Patient is not able to resist your movement or muscle atrophy is observed upon contraction
| Study | Reliability | Sn | Sp | LR+ | LR- |
| Ekstrom et al. (2003) | NA | NA | NA | NA | NA |
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