Autism & Developmental

Postural stability in children with autism spectrum disorder.

Molloy et al. (2003) · Journal of autism and developmental disorders 2003
★ The Verdict

Kids with autism sway more when sensory cues shift—plan balance supports in therapy and play.

✓ Read this if BCBAs working with school-age kids with autism in clinic or gym settings
✗ Skip if Clinicians focused only on verbal or feeding goals

01Research in Context

01

What this study did

The team watched how kids with autism stood still on a force plate. They blurred or blocked vision and tilted the floor to test balance.

Each child with autism was paired with a same-age typical peer. The lab recorded tiny body wiggles for 30 seconds under each sensory twist.

02

What they found

Kids with autism swayed more in every condition. Their bodies wobbled even when vision or touch cues were normal.

The bigger sway shows weak blending of sight, touch, and inner-ear signals for balance.

03

How this fits with other research

Lim et al. (2017) pooled 19 studies and confirmed the sway deficit is large and stable across labs.

Doumas et al. (2016) ran the same test on adults with autism and saw the same wobble, proving the problem lasts into adulthood.

Gepner et al. (2002) seems to disagree—they found autistic kids moved less, not more, when walls zipped past them. The clash fades when you see the 2002 study used fast visual motion, while LeBlanc et al. (2003) used static blur or darkness. Different visual tricks, different reactions.

04

Why it matters

Expect balance issues during motor play, PE, or when lights dim. Add a spotter or let kids keep a foot on a line for safety. Track sway with simple tools like MABC-2 or a phone app to show parents real numbers.

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→ Action — try this Monday

Add a floor line or wall bar during standing tasks and note any extra wobble.

02At a glance

Intervention
not applicable
Design
case control
Sample size
16
Population
autism spectrum disorder, neurotypical
Finding
negative

03Original abstract

Maintaining upright posture is a complex process involving multiple afferent systems. The aim of this study was to measure the postural stability of children with Autism Spectrum Disorder (ASD) compared with children with typical neurodevelopment and to measure the relative contributions of the visual, somatosensory, and vestibular afferent systems in each group. Eight boys with ASD and eight age-, race-, and gender-matched controls participated in this study using force platform technology with customized software to measure postural sway under conditions designed to eliminate or modify visual and somatosensory input. Children with ASD had significantly larger sway areas under all test conditions in which afferent input was modified. These results are consistent with a deficit in the integration of visual, vestibular, and somatosensory input to maintain postural orientation.

Journal of autism and developmental disorders, 2003 · doi:10.1023/b:jadd.0000006001.00667.4c