Improvement in the Capacity for Activity Versus Improvement in Performance of Activity in Daily Life During Outpatient Rehabilitation.

The study relied on probabilistic statistical models to determine if a change was 'real' for each individual, rather than using standard minimal clinically important difference thresholds. There is no information on whether the changes detected (or not detected) were meaningful to the patients themselves. Some participants, particularly in the Parkinson disease walking group, had high baseline step counts, which may have created a ceiling effect where further improvement was difficult to measure. The study did not control for or analyze the specific content of the therapy delivered, so it cannot determine if different therapy techniques would have yielded different performance outcomes.

The study was funded by the NIH (R01HD068290). The authors declared no conflicts of interest.

Do not conclude that therapy is ineffective because daily life performance did not improve. The study shows a disconnect between what is measured in the clinic (capacity) and what happens at home (performance). Clinical gains are real, but they are not automatically translating into functional change, suggesting a need to address barriers to carryover rather than assuming the intervention itself failed.