The Effects of Exercise Dose on Stereotypical Behavior in Children with Autism.

Introduction: Autism Spectrum Disorder (ASD) is a prevalent neurological disorder in children characterized by restrictive, repetitive patterns of behavior that place an added burden on everyday functions. Aerobic exercise has the propensity to reduce stereotypic behaviors in children with ASD. This study sought to quantify the acute effect of exercise and assess the influence of duration and intensity on frequency of stereotypic behaviors in children with ASD. Methods: Participants in this study (N=7, Mage=13.0 +/- 1.4 yrs, Mheight=1.64 +/- 0.01m, Mweight=60.1 +/- 13.7kg) underwent five separate days of treatments including a control (C), low intensity 10 min (10L), high intensity 10 min (10H), low intensity 20 min (20L), and high intensity 20 min (20H) conditions in which intensity was quantified using HR as well as RPE. Prior to and for 60 min following exercise, frequency of stereotypic behaviors was recorded. Results: Results indicated a reduction in behaviors in response to exercise compared to the C trial throughout all conditions except 20H. Interestingly, the most exhaustive exercise session led to increased stereotypic behaviors at all post time periods compared to the other exercise trials (p<.10 the condition showed greatest reduction at min post compared to or control trials response examining behavioral responses exercise using effect sizes indicated in frequency throughout all time points baseline. conclusion: while it appears high-intensity aerobic may exacerbate stereotypic behaviors children with asd low-to-moderate intensity produces significant and large reductions these behaviors. this provides an easily administered cost-effective way positively impact individuals. american college of sports medicine>

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