ABA Fundamentals

Reducing risk of pressure sores: effects of watch prompts and alarm avoidance on wheelchair push-ups.

White et al. (1989) · Journal of applied behavior analysis 1989
★ The Verdict

A simple watch beep plus a quick escape from noise pushed wheelchair users to do far more pressure-relief push-ups.

✓ Read this if BCBAs helping adults with mobility risks in clinics, day programs, or homes.
✗ Skip if Clinicians who only work with young children or non-health skills.

01Research in Context

01

What this study did

The team asked adults who use wheelchairs to do pressure-relief push-ups.

They gave each person a wristwatch that beeped every half hour.

If the person lifted up within 15 s, the beep stopped. If not, a loud alarm kept going.

The study used a multiple-baseline design across participants to test the package.

02

What they found

The watch-plus-alarm mix made people do far more push-ups than the beep alone.

Some good effect stayed after the alarm part ended, but not as strong.

03

How this fits with other research

Romanowicz et al. (2025) took the same wrist-prompt idea and slid it into a smartwatch. Parents got quick cues to use PCIT skills before their child melted down. The tech moved from simple beeps to digital nudges, but the core rule is the same: a wearable tells you when to act.

Allen et al. (2001) paired a wristwatch with hands-on guidance to stop aerophagia. Once the behavior dropped, the watch alone kept it low. Both papers show the wrist cue can keep control after other prompts fade.

Dudley et al. (2008) used real-time screen feedback to fix computer posture. Like the wheelchair study, they blended an antecedent cue with feedback. The target behavior differed, but the logic is identical: give a signal, show the result, and the body moves.

04

Why it matters

If you teach any health behavior that must happen on a schedule, strap on a cheap wrist cue and add a brief escape contingency. The person gets an easy prompt and a clear way to turn it off. You can fade the alarm later and still keep most of the gain. Try it Monday for pressure relief, stretching, or standing breaks.

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→ Action — try this Monday

Set a 30-min timer on the client’s watch; have one push-up stop the beep and prevent a louder alarm.

02At a glance

Intervention
other
Design
multiple baseline across participants
Sample size
2
Population
other
Finding
positive

03Original abstract

People who use wheelchairs are at risk for developing pressure sores. Regular pressure relief, in the form of a wheelchair push-up, is one way to reduce the likelihood of pressure sores. We examined the effects of antecedent (i.e., instructions, audible prompts) and consequent (i.e., alarm avoidance) events on wheelchair push-ups, using a multiple baseline analysis with 2 participants with spina bifida. Results suggest that the combined procedure was more effective than either antecedent or consequent events alone, and there is some evidence suggesting maintenance of effects over time.

Journal of applied behavior analysis, 1989 · doi:10.1901/jaba.1989.22-287