Designing for adherence in home rehabilitation

I reviewed rehabilitation apps, fitness products, and public health materials to understand what drives adherence in home recovery and what increases drop-off risk during exercise.

Key findings • Pain, fatigue, and fear of movement increase cognitive burden during active sessions • Too much interaction during exercise can interrupt completion • Fitness apps are often simple to follow, but their motivational patterns do not translate well to therapeutic use • In rehabilitation, guidance and predictability matter more than performance framing

The research reframed the problem from workout tracking to adherence support. Instead of asking users to report more during or immediately after physical effort, I focused on reducing interaction at the point of highest cognitive and physical demand.

Useful signals should be captured passively where possible, while user input should be limited to information that is clinically meaningful but cannot be inferred reliably, such as pain or perceived difficulty.

That shift informed the concept directly: guided progression, minimal UI, repetition-based feedback, end-of-session reflection, and bounded flexibility that preserved therapeutic intent without increasing user burden.

The final concept was shaped by one main principle: reduce friction at the moment of highest physical and cognitive demand. Rather than designing for richer tracking or more visible control, I focused on helping users stay in the session. Each design decision was guided by the same question: does this make the workout easier to complete without weakening therapeutic intent?

Key decisions

Repetition-based progress instead of time-based tracking Repetition-based progress feels more concrete and easier to process during exercise. It gives users a clearer sense of completion and makes the session feel more manageable.

Minimal UI during movement During active exercise, the interface should support movement, not compete with it. I reduced visual noise and kept only the elements needed to stay oriented and continue.

This concept connected UX decisions directly to adherence, data quality, and clinical value.

By reducing cognitive load during exercise and limiting unnecessary interaction, the experience was designed to help more users complete their sessions instead of dropping out halfway through. In a rehabilitation product, better completion is not only a user benefit. It also increases the likelihood of more consistent therapy, more reliable patient feedback, and stronger signals for physiotherapists monitoring progress.

From a product perspective, this creates a clear value chain: better UX can support better adherence, which improves the quality of engagement and makes the product more useful both clinically and commercially. Better adherence does not only improve the patient experience. It also makes the product more credible as a rehabilitation tool, because stronger completion leads to more reliable data and better support for therapist decision-making.

This project reinforced how strongly interface design can influence behavior in rehabilitation contexts.

The most important learning was that adherence should be treated as a primary product outcome, not as a side effect of good UI. If the experience asks too much from users when they are already in pain, fatigued, or unsure, even useful features can become barriers to completion.

It also showed that simplicity is not reduction for its own sake. In this case, simplifying the session meant protecting focus, reducing unnecessary decisions, and placing control only where it was most helpful.

Another key learning was that adjacent product patterns can be useful, but only when filtered through context. Fitness apps offered strong lessons in pacing and clarity, but their performance-driven logic did not fit a therapeutic environment.