The ExtRA Capacity Test: Reliability and validity study of a new tool for assessing shoulder muscle performance
H. Ford, J. Lewis, V. Tyros, M. Davare, D. C. Low, A. F. Shaheen
The paper evaluates the reliability and validity of the ExtRA Capacity Test for assessing shoulder muscle performance, finding it reliable for abduction but less valid for external rotation.
bioRxiv · Jun 23, 2022 · PreprintPhysiology