Changes in movements of neck, trunk, and hip according to height and foot position during sit-to-stand.
Jungbin Lee, Jemyung Shim, Sungjoong Kim and 2 others
PMID 27821921WHAT IT FOUND
Foot position did not change neck angles in healthy young adults rising from a fixed chair, but it changed trunk and hip movement angles; taller people showed larger trunk and hip movement.
Key findings
01No differences were found in neck flexion-extension, side bending, or rotation across the three foot positions.
02Trunk and hip angles changed with foot position; symmetric feet produced smaller trunk changes, and the smallest hip changes were seen in the symmetric and right-foot-forward positions.
03Taller participants showed larger trunk and hip movement angles.
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 22 healthy university students, so it does not show what happens in elderly people, stroke patients, or people with knee arthritis. The chair height was fixed at 43.8 cm, matching many subway seats, so the findings may not apply to other chair heights. The authors did not measure lower-limb load or clinical sit-to-stand success; they measured joint angles only. Height analyses were based on small groups by height, so height effects are uncertain. All participants were right-foot dominant, so results may not apply to left-foot dominant people. The same researcher performed all measurements, so the study did not test whether different researchers would get the same result.
Declared interests
No funding or conflict-of-interest declaration is provided in the supplied text.
The easy way to misread this
Do not read the smaller trunk and hip angle changes in symmetric foot position as proof that this posture is better for stroke patients, elderly people, or knee arthritis patients. The study tested only 22 healthy university students and measured movement angles, not clinical sit-to-stand success.