I bet with some additional research they could correlate penumbra damage with predictions on walking speed and that would be objective and repeatable.
Amount of Exercise in the First Week After Stroke Predicts Walking Speed and Unassisted Walking
Abstract
Background.
Predicting walking outcomes poststroke is a challenge for clinicians.
Objective.
To identify the extent to which exercise dose (repetitions of leg movements) in the first week of a comprehensive stroke
unit stay predicts discharge mobility.
Methods.
A cohort study was conducted on 200 consecutive people admitted to a comprehensive stroke unit who required physical therapy.
Results.
Discharge and predictor data were
available for 191 survivors (99%). On admission, 86 participants were
able to walk, and
the average walking velocity was 0.42 m/s. On
discharge, the average walking velocity was 0.77 m/s, and 152
participants were
able to walk. A discharge walking velocity of
greater than 0.8 m/s was predicted by the exercise dose achieved in the
first
week after admission. Adding other predictors did
not significantly increase the predictive ability of the model.
Completion
of more than the median number of exercise
repetitions (703) in the first week of admission was associated with a
quicker
recovery of unassisted walking. This effect
persisted after adjustment for walking velocity on admission, cognition,
and comorbidity.
Conclusion.
Exercise dose in the first week after admission for stroke is an important indicator of walking speed at discharge and the
time to achieve unassisted walking.
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