Muscle strength and executive function in children and adolescents with autism spectrum disorder.
Stronger muscles track with better executive function only in youth with ASD, so brief strength games are an easy add-on to behavioral programs.
01Research in Context
What this study did
Ludyga et al. (2021) measured grip strength and leg power in kids with autism and typical peers. They also gave each child quick tests of planning, flexible thinking, and processing speed.
The team wanted to know if stronger muscles went hand-in-hand with sharper minds only in autism, or in everyone.
What they found
In youth with ASD, higher muscle strength predicted better executive function and faster processing speed. The link showed up only in the autism group; typical kids did not show the same pattern.
The finding hints that building muscle might give an extra brain boost to kids on the spectrum.
How this fits with other research
Zhao et al. (2024) extends this idea. Their 12-week aquatic exercise trial raised inhibition control and cognitive flexibility in autistic kids, showing the brain can improve when muscles work.
Coffey et al. (2021) seems to clash at first. They report lower fitness across the board in ASD youth. Sebastian’s data do not deny this; they simply show that, even within those lower ranges, the stronger kids think faster.
Healy et al. (2018) and Neuhaus et al. (2016) meta-analyses back the big picture: physical activity programs lift motor skills, social skills, and stereotypy in autism. Sebastian adds executive function to that benefit list.
Why it matters
You already write behavior plans for flexibility or working memory. Add short muscle-loading activities—animal walks, therapy-band pulls, mini-squats—into sessions or home packets. Track both reps and EF targets; you may see gains in each.
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02At a glance
03Original abstract
The development of effective (non-pharmacological) treatment approaches for executive dysfunction in autism spectrum disorder (ASD) requires evidence that factors influencing this domain can be modified by behavioral interventions. The present cross-sectional study investigated the relative associations of ASD, muscle strength and body mass index with executive function and information processing among the Healthy Brain Network cohort. Patients with ASD (N = 174) and healthy peers (N = 202) aged 5 to 18 years completed cognitive tasks of the NIH toolbox (Pattern Comparison, Flanker, List Sorting, Card Sorting) to assess core components of executive function and information processing. Additionally, anthropometrics and muscle strength were collected from selected items (push-ups, curl-ups, trunk lift, and grip strength) of the Fitnessgram battery. Based on structural equation modeling, ASD was related to impaired muscle strength and executive function, when confounders (age, sex, pubertal status, and socioeconomic status) were accounted for. Muscle strength further showed independent contributions to information processing and executive function. This association was moderated by ASD, so that higher muscle strength was related to higher executive function in ASD patients only. The present findings provide a first indication that the promotion of muscle strength may have the potential to generally enhance information processing and to reduce ASD-related executive dysfunction in children and adolescents. LAY SUMMARY: In comparison to healthy peers, children with ASD showed impairments in executive function and muscle strength. Moreover, higher muscle strength was independently associated with better executive function, but only in ASD patients. This is a first indication that the promotion of muscle strength, for example, by regular exercise, could contribute to a reduction of ASD-related executive dysfunction.
Autism research : official journal of the International Society for Autism Research, 2021 · doi:10.1016/j.dr.2015.07.001