Atypical Visually Guided Precision Grip Control in Middle-Aged and Older Autistic Adults.
Zheng Wang, Hang Qu, Danielle Christensen and 7 others
PMID 41386770WHAT IT FOUND
Middle-aged and older autistic adults showed unstable grip force and delayed movement initiation compared to non-autistic peers.
These motor control differences were more pronounced in the older subgroup, suggesting fine motor skills degrade with age in autism.
Key findings
01Autistic adults exhibited significantly greater sustained force variability compared to non-autistic adults during precision gripping tasks.
02During the rise phase, autistic adults showed significantly longer durations and delayed reaction times compared to non-autistic individuals.
03The older autistic subgroup exhibited deficits in both spatial and temporal grip force control, whereas the middle-aged subgroup primarily showed increased variability.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The cross-sectional design prevents conclusions about longitudinal changes in motor function over time. A significant proportion of autistic participants were taking psychotropic medications, which could influence motor performance, though this was not controlled for in the analysis. The study did not measure muscle fatigue directly, so the shorter relaxation reaction times observed in autistic adults are interpreted as potentially related to fatigue but not confirmed as such.
Declared interests
The authors declare no conflicts of interest. The study was funded by the National Institute on Aging, the National Institute of Neurological Disorders and Stroke, and the University of Florida APK Research Investment Grants Award.
The easy way to misread this
Do not interpret the shorter reaction times during the relaxation phase as evidence of improved motor speed in autistic adults. The authors suggest this finding likely reflects reduced muscular endurance and susceptibility to fatigue due to the long duration of the testing trials.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →