Correlation among proprioception, muscle strength, and balance.
Huihui Wang, Zhongqiu Ji, Guiping Jiang and 2 others
PMID 28174475WHAT IT FOUND
In 24 female college students, knee position sense, force sense, quadriceps strength, and quadriceps-to-hamstring ratio were related to balance scores, but the relationships varied with knee angle.
Key findings
01At the 15° knee position, position sense, force sense, quadriceps strength, and the quadriceps-to-hamstring ratio were each associated with at least one balance measure.
02At the 45° knee position, position sense, quadriceps strength, and the quadriceps-to-hamstring ratio were associated with balance measures, while force sense was associated only with the overall limits-of-stability score.
03The associations were not the same at the 15° and 45° knee positions.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The participants were 24 healthy female college students with no knee injuries, so the results may not apply to patients with knee pain, older adults, or men. The study measured associations, so it cannot show that improving proprioception or strength improves balance. Only the dominant knee was tested, so it does not describe people with symptoms on the other knee. The sample size is small.
Declared interests
The supplied text does not report funding or conflicts of interest.
The easy way to misread this
Do not read these correlations as proof that training knee position sense, force sense, quadriceps strength, or the quadriceps-to-hamstring ratio will improve balance. The study measured associations in 24 healthy young women, not treatment effects.