Early Gait Responsiveness as a Predictor of Functional Trajectory in Older Adults Undergoing Postacute Rehabilitation.
Neha Sabharwal
PMID 42769383WHAT IT FOUND
In older adults in postacute rehab, walking distance that increased faster during the first five therapy sessions predicted better discharge function.
Each extra meter per session was linked to a 2.6-point higher FIM motor score. This is an observational signal, not proof that changing therapy dose improves outcomes.
Key findings
01After adjusting for age, sex, diagnosis, baseline gait distance, and therapy frequency, each 1 m/session increase in early gait responsiveness was associated with a 2.6-point higher discharge FIM motor score.
02Greater early gait responsiveness was associated with shorter length of stay (2.0 fewer days per m/session) and higher odds of discharge home independently or with services versus institutional placement.
03Adding early gait responsiveness to a model containing demographics and baseline gait distance increased the explained variance in discharge FIM scores from 28% to 40%.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study design is observational and cannot establish causality; early responsiveness may reflect underlying recovery potential rather than treatment effect. Gait distance was measured using routine clinical documentation without standardized protocols or inter-rater reliability testing, introducing potential measurement error. Approximately 24% of screened patients were excluded, primarily due to incomplete data or shorter lengths of stay, which may bias the sample toward more complex cases. The data came from three facilities in a single regional network, limiting generalizability to other geographic areas or facility types. Unmeasured confounders such as cognitive status, pain, mood, and nutritional status were not included in the models. The proposed cut-points for low, moderate, and high responsiveness are preliminary and require external validation before clinical adoption.
Declared interests
The author declares no conflicts of interest.
The easy way to misread this
Do not interpret the association between early gait responsiveness and better outcomes as evidence that increasing therapy intensity will improve recovery. The study shows that patients who respond well early tend to do well later, but it does not prove that the responsiveness itself is a modifiable target that changes the trajectory.