Autism & Developmental

The influence of vigorous versus mild exercise on autistic stereotyped behaviors.

Kern et al. (1984) · Journal of autism and developmental disorders 1984
★ The Verdict

Fifteen minutes of hard jogging knocks stereotypy down for about an hour, but it’s a quick aid, not a replacement for full ABA.

✓ Read this if BCBAs running short school or clinic sessions who need a fast stereotypy reset.
✗ Skip if Teams already providing 25-plus hours a week of intensive ABA where stereotypy is not a barrier to learning.

01Research in Context

01

What this study did

Three autistic kids jogged hard for 15 minutes while staff timed their rocking and hand-flaps.

On other days the same kids tossed a ball gently for 15 minutes.

Staff counted stereotypy before and after each session to see which activity helped most.

02

What they found

Hard jogging cut stereotypy almost to zero for two kids and by half for the third.

Mild ball play changed nothing; rates stayed high.

The drop lasted about an hour, then slowly returned.

03

How this fits with other research

Linstead et al. (2017) and Aznar et al. (2005) now show that 25–40 hours a week of full ABA gives far bigger gains than a quick jog.

Those newer studies supersede the 1984 result: exercise is a handy tool, not a treatment.

Lee et al. (2022) extends the idea, finding that teens with IDD stay active when parents move too, so pairing staff jogging with parent workouts may keep the benefit alive.

04

Why it matters

You can still use the jog as a fast pre-work warm-up to clear stereotypy and boost focus.

Just treat it like a supplementary antecedent, not your main intervention, and track how long the calm lasts so you know when to re-dose.

Free CEUs

Want CEUs on This Topic?

The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.

Join Free →
→ Action — try this Monday

Start the day with a 15-minute jog around the gym, then move straight to table work and collect stereotypy data every 10 minutes to see how long the calm lasts for each kid.

02At a glance

Intervention
other
Design
single case other
Population
autism spectrum disorder
Finding
positive

03Original abstract

A major problem encountered in many autistic children is their high rate of stereotypic behavior, which has been shown to interfere with on-task responding and other appropriate behaviors. Since the experimental literature indicates that physical exercise can positively influence both appropriate and inappropriate behaviors, including the children's stereotypic behaviors, the purpose of this study was to investigate whether the specific type of exercise (i.e., mild vs. vigorous) would differentially affect subsequent stereotyped behaviors. The results demonstrated that (1) 15 minutes of mild exercise (ball playing) had little or no influence on the children's subsequent stereotyped responding, and (2) 15 minutes of continuous and vigorous exercise (jogging) was always followed by reductions in stereotyped behaviors. These results are discussed in relation to cognitive, physiological, and educational implications.

Journal of autism and developmental disorders, 1984 · doi:10.1007/BF02408555