Static balance according to hip joint angle of unsupported leg during one-leg standing.
Ju-Hyung Cha, Jang-Joon Kim, Jae-Gwan Ye and 5 others
PMID 28603375WHAT IT FOUND
When young adults stood on one leg with eyes open, sway was larger with the unsupported leg at 0° than at 30°, 60° or 90°.
With eyes closed, the pattern was less consistent, so record hip angle when testing balance.
Key findings
01With eyes open, total sway length was 372.6 mm at 0° and 295.2 mm at 30° of hip angle on the unsupported leg.
02With eyes closed, total sway length was 616.1 mm at 0° and 523.1 mm at 30°.
03No significant interaction was found between hip joint angle and whether visual input was blocked.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only 45 healthy adults in their 20s, so it says little about older adults or people with balance problems. The authors state that one-leg standing was not accurately controlled according to hip joint angle. The authors state that body alignment was not precisely controlled except for the hip and knee angle. The eyes-closed results were not consistent across all balance measures.
The easy way to misread this
Do not assume these sway differences apply to older adults or patients with balance problems. The study included only 45 healthy adults in their 20s, and the authors state it is difficult to generalize to all ages.