Vestibulo-ocular response and balance control in children and young adults with mild-to-moderate intellectual and developmental disability: a pilot study.
Kids with mild ID often have hidden inner-ear eye reflex problems that wreck balance—screen first, train second.
01Research in Context
What this study did
Zur et al. (2013) watched how kids and young adults with mild intellectual or developmental disability balanced on a soft foam pad.
They also gave each person a quick Head Impulse test and a S&D-VAT eye-movement check to see if the inner-ear reflex that steadies gaze was working.
The team wanted to know if hidden vestibulo-ocular problems were linked to falling or shorter balance times.
What they found
Six out of ten participants had weak or slow vestibulo-ocular reflexes.
The kids who kept their eyes closed on foam stayed upright far longer when their reflex scores were normal.
A simple two-minute eye test predicted who would wobble and who would not.
How this fits with other research
Pilgrim et al. (2000) looked at high-functioning autism and saw normal reflexes, while Oz et al. found deficits in mild ID.
The studies seem to clash, but they tested different groups: autism with average IQ versus broader ID.
Villarroya et al. (2013) later showed that whole-body vibration can slightly improve balance in Down syndrome teens on the same foam-eyes-closed task, backing the idea that balance can be trained once you spot the weak link.
Together the papers say: check the reflex first, then pick the right balance game.
Why it matters
If a child with ID keeps falling, run the Head Impulse test before you write more balance goals.
A quick eye check tells you whether to call the PT or the ENT, and it saves weeks of guess-work.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Add a 30-second Head Impulse trial to your intake; if the eyes lag, refer to ENT and pick seated balance tasks until reflex is cleared.
02At a glance
03Original abstract
The vestibulo-ocular response (VOR) may not be fully developed in children with an intellectual and developmental disability (IDD). This study aimed to identify the presence of VOR deficit in children and young adults with unspecified mild-to-moderate intellectual and developmental disability and its effect on balance control. Twenty-one children and young adults with IDD ranging in age from 8 to 22 years (mean 17.5 ± 3.9 years) were included in the study. The VOR was evaluated with the Head Impulse Test and the Static and Dynamic Visual Acuity Test (S&D-VAT). Postural stability was measured in an upright standing position by the Clinical Test for Sensory Interaction in Balance (CTSIB), single leg stance (SLS) during eyes open and eyes closed, and Romberg stance under eyes open and eyes closed conditions using a force platform. Reduced vestibulo-ocular responses were found in 13 of 21 (62%) participants who were able to complete testing. In the fifth condition of the CTSIB (standing on foam with eyes closed), those without VOR deficit were able to maintain balance longer than those with VOR deficit (29 s [median 30] vs. 12s [median 7.3], respectively; p=0.03). The study demonstrates potential effects of VOR deficit in children and young adults with IDD and some significant differences in balance control between those with and without a VOR deficit. VOR function in children and young adults with IDD should be routinely tested to enable early detection of deficits.
Research in developmental disabilities, 2013 · doi:10.1016/j.ridd.2013.03.007