Product Spotlight: The MTAP and the Value of Measuring What Patients Actually Do August 19 2026
One of the recurring challenges in rehabilitation is surprisingly simple:
How do we measure function?
Strength is measurable. Range of motion is measurable. Grip strength is measurable.
But what about being able to carry groceries? Clean a house? Lift a box? Work overhead? Perform household maintenance? Handle the physical demands of a job?
Those activities are much harder to capture with a single impairment measure.
That is one of the reasons the Multidimensional Task Ability Profile (MTAP) continues to be useful in rehabilitation settings.
Function Outside the Clinic
The MTAP is designed to quantify a person's perceived ability to perform physical activities encountered in everyday life and work.
Instead of asking only about symptoms or isolated body functions, the assessment asks patients to consider actual activities.
The result is a picture of how the individual perceives their functional capacity across a range of tasks.
The MTAP includes 50 illustrated items covering activities ranging from self-care and household tasks to heavier physical activities. It can also be related to the U.S. Department of Labor's Physical Demand Characteristics of work.
That makes it particularly interesting for clinicians who are trying to connect what happens in the treatment room to what happens outside it.
Why Pictures Matter
The MTAP uses illustrations accompanied by short descriptions.
That may seem like a small design choice, but it is an important one.
A long written description can introduce unnecessary ambiguity. A simple picture of someone performing a task can make the question much more immediately understandable.
This can be especially helpful when working with individuals who have lower literacy levels or who may have difficulty processing lengthy written questions.
In other words, sometimes the simplest way to ask a functional question is to show it.
Self-Report Isn't the Same as Performance
There is an important distinction here.
The MTAP does not replace performance testing.
A patient telling us they can lift 50 pounds and a patient demonstrating that ability under controlled conditions are two different pieces of information.
That doesn't make one "right" and the other "wrong."
They answer different questions.
The comparison between perceived ability and observed performance can actually be clinically useful.
If a person reports substantial limitations but performs much better than expected, that discrepancy deserves consideration.
Likewise, if someone reports that they can perform an activity but struggles significantly when actually performing it, that tells us something important too.
The disagreement between measures can sometimes be more informative than agreement.
Tracking Change
Another advantage of a functional questionnaire is that it can be repeated.
If the patient's perceived ability to perform everyday activities improves during treatment, the clinician has another way of documenting functional change.
This is particularly useful when the ultimate goal of treatment is not simply "less pain" or "better strength."
The goal may be:
Return to work. Return to household responsibilities. Return to independence. Return to life.
Those are functional outcomes.
A Useful Companion to Performance Testing
The MTAP can be used alongside physical performance measures rather than instead of them.
For example, a clinician might use:
- MTAP to establish perceived functional capacity
- Grip or pinch testing to examine upper-extremity strength
- EPIC Lift Capacity testing to examine lifting performance
- Job analysis to understand actual workplace demands
- Clinical observation to identify movement or behavioral factors
Together, those pieces provide a much richer picture than any one test can provide by itself.
The MTAP is available as a standalone assessment as well as a comprehensive kit that includes analytics software and additional resources.
The Bigger Idea
At Matheson Development, we have always been interested in a fairly simple question:
What can the person actually do?
The MTAP approaches that question from the patient's perspective.
Performance testing approaches it from observed behavior.
Job analysis approaches it from the employer's perspective.
Good rehabilitation often happens when those three perspectives are brought together.