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- A novel way of testing hip…
A novel way of testing hip extension and flexion strength, and strength ratio in the clinical setting: is it reliable?
Review written by Dr Travis Pollen
Key Points
- This study assessed the test-retest reliability of a new test setup for measuring maximal isometric hip extensor and flexor strength in 60° of hip flexion.
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BACKGROUND & OBJECTIVE
The ability to measure hip strength reliably is important for patients with hip and groin pain. However, traditional measurement protocols typically assess hip extension and flexion in positions in which force production may be suboptimal due to the length-tension relationship and/or pain. They also often test extension and flexion at different joint angles, which limits direct comparison.
To address these limitations, this study assessed the test-retest reliability of a new test setup for measuring both maximal isometric hip extensor and flexor strength in the same mid-range position (60° of hip flexion).
Traditional measurement protocols typically assess hip extension and flexion in positions in which force production may be suboptimal due to the length-tension relationship and/or pain.
The tested position in this study is thought to put both muscle groups at favorable lengths to produce force and allows for a direct agonist/antagonist comparison.
METHODS
The test setup is shown in Figure 1.
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