Measuring hip flexor and extensor strengths across various postures using a fixed belt.
Takashi Yoshizawa, Kentarou Higashi, Tomohiko Katou
PMID 28533587WHAT IT FOUND
Hip flexor strength and left hip extensor strength were higher when healthy adults were measured sitting at 90 degrees than in manual muscle testing postures.
The right hip extensor strength did not differ by posture.
Key findings
01Hip flexor strength was greater in the sitting 90-degree posture than in the MMT posture on the right and left sides.
02Left hip extensor strength differed between the postures.
03Male and female subjects showed no difference in hip flexor or extensor strength in any posture.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
All subjects were healthy adults, so the study is limited to application to adults with various conditions. The paper states that elderly or postoperative patients were not studied. The title mentions a fixed belt, but the methods describe hand stabilization and no belt, so the paper does not report belt versus no-belt results.
The easy way to misread this
Do not compare hip strength measured in the sitting 90-degree posture with a value measured in the MMT posture. The posture changed the measured strength for several hip muscles.