Autism & Developmental

Treadmill walking effects on grip strength in young men with Down syndrome.

Chen et al. (2014) · Research in developmental disabilities 2014
★ The Verdict

One 20-minute treadmill walk can give an instant, small bump in grip strength for young men with Down syndrome.

✓ Read this if BCBAs running motor or ADL programs for teens or adults with Down syndrome.
✗ Skip if Clinicians serving non-ambulatory clients or those without treadmill access.

01Research in Context

01

What this study did

The team asked young men with Down syndrome to walk on a treadmill for 20 minutes.

They measured grip strength before and right after the short walk.

No control group walked without the treadmill; each man served as his own baseline.

02

What they found

Grip strength ticked up a small but real amount after the single bout.

The gain showed up right away and did not need weeks of training.

03

How this fits with other research

Lemons et al. (2015) ran the same 20-minute treadmill plan and saw a quick boost in inhibition, not strength.

Together the two papers paint a matching picture: one brisk walk can nudge both muscles and thinking in Down syndrome.

Smit et al. (2019) stretched the idea further and found the same walk also lifts verbal fluency, showing the benefit jumps across body and language systems.

Boer et al. (2019) moved from land to water and trained adults three times a week for six weeks. They gained aerobic power but only tiny strength changes, hinting that short land walks may be the faster way to spark immediate grip strength.

04

Why it matters

You can slip a 20-minute treadmill warm-up into a session before fine-motor tasks. The tiny strength lift may help clients hold tools or open containers right after exercise. Track grip with a cheap dynamometer to see if the quick boost shows up for your learner.

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Start the session with a 20-minute moderate treadmill walk, then test grip on a hand dynamometer before and after to spot the quick gain.

02At a glance

Intervention
other
Design
pre post no control
Sample size
20
Population
down syndrome
Finding
weakly positive
Magnitude
small

03Original abstract

This study was aimed at investigating the relation between grip strength and anthropometric factors and the impact of an aerobic exercise on grip strength in young men with Down syndrome (DS). This study was a pre-post design. Twelve males with DS were assigned to an exercise group, who walked using an incremental protocol on a treadmill for 20 min at aerobic levels. Eight additional persons with DS were assigned to an attentional control group, who watched a video. Measure of grip strength was tested pre- and post-interventions. The results showed positively significant relationship among grip strength and age (r=.74, p<.01), weight (r=.52, p=.02), body mass index (r=.61, p=.01) and waist circumference (r=.54, p=.02). In addition, Grip strength was slightly improved after exercise (p=.03) but decreased after control condition. The results showed that anthropometric factors, such as age, weight, body mass index and waist circumference, were positively correlated with grip strength in young men with DS. Further, improvement in grip strength can be found even after a single exercise session. This finding emphasizes the importance of maintaining an active lifestyle in persons with DS for performing activities of daily living.

Research in developmental disabilities, 2014 · doi:10.1016/j.ridd.2013.10.032