Inclination of standing posture due to the presentation of tilted view through an immersive head-mounted display.
Yuji Ohmura, Shiro Yano, Junji Katsuhira and 3 others
PMID 28265145WHAT IT FOUND
A leftward tilted view on a head-mounted display made 11 healthy young men tilt their head and trunk left: force under the left leg increased, and force under the right leg decreased.
Key findings
01The inclined view significantly changed floor reaction forces, with force decreasing in the right leg and increasing in the left leg.
02The inclined view significantly increased head tilt, trunk tilt, and trunk bending, without changing pelvis tilt or head bending.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study tested only 11 healthy young male university students, so it does not show what would happen in older adults or people with balance disorders. Only a leftward tilted view was tested, so the effect of a rightward tilt is unknown. The head-mounted display may have added weight and changed body sensation, even though it was lightweight. The visual environment in the room was not strictly controlled, so vertical features in the room may have influenced posture. The study did not measure which sensory system the participants relied on, so it cannot say how vision, body sensation, and balance sense interacted. Participants stood still for only 5 seconds, so the results may not apply to walking or turning.
The easy way to misread this
Do not conclude that immersive head-mounted displays are an effective balance treatment for patients. The study only showed that a tilted view changed standing posture in 11 healthy young men who stood for 5 seconds.