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BEGIN:VEVENT
DTSTAMP:20251016T135146Z
LOCATION:Riverside East
DTSTART;TZID=America/Chicago:20251014T173000
DTEND;TZID=America/Chicago:20251014T183000
UID:HFESAM_ASPIRE 2025_sess131_POST489@linklings.com
SUMMARY:Effects of AR HMD Design Elements on Workers' Postural Stability d
 uring a Dual-Task Condition
DESCRIPTION:Kitae Hwang, Kangwon Kim, and Sungwoo Jeong (Seoul National Un
 iversity); Hyeonyeong Lee (Seoul national university); and Philjun Moon an
 d Woojin Park (Seoul National University)\n\nAugmented Reality Head-Mounte
 d Displays (AR HMDs) offer hands-free operation and real-time access to vi
 rtual information, making them increasingly popular in industrial settings
 . However, how individual design elements of AR HMDs affect postural stabi
 lity—a key factor in workplace safety—remains insufficiently understood. T
 his study examined the effects of specific AR HMD elements, including weig
 ht, visor tint, and usage duration, on postural stability during quiet sta
 nding. Sixteen participants completed a dual-task combining a 2-back worki
 ng memory task and a 15-minute quiet standing task under four conditions: 
 tablet only, tablet with visor-up HMD, tablet with visor-down HMD, and AR 
 HMD. Postural sway was assessed using six metrics based on center of press
 ure data: anteroposterior/mediolateral standard deviation, anteroposterior
 /mediolateral amplitude, total sway path length, and sway area. Two-way AN
 OVA revealed significant main effects of time and task condition on severa
 l postural stability measures. Notably, postural sway was higher in the vi
 sor-up HMD condition than in the tablet-only condition. Furthermore, postu
 ral sway was increased in the visor-down HMD condition compared with the v
 isor-up HMD condition. These findings suggest that added head weight and v
 isual disturbance due to visors impair postural stability. Reducing device
  weight and increasing visor transmittance may improve postural stability 
 in industrial settings.\n\n
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