Total Distance Walked After Hip Surgery Identifies Older Patients With Sarcopenia.
Pablo A Marrero-Morales, Enrique González-Dávila, Eva M Gallego-González and 2 others
PMID 40545800WHAT IT FOUND
Older hip fracture patients who walked shorter total distances on discharge day were more likely to have sarcopenia.
Sex-specific distance cut-offs may help flag probable or confirmed sarcopenia during inpatient rehabilitation.
Key findings
01Total distance walked on discharge day decreased significantly with increasing sarcopenia degree, from 28.6 m in patients without sarcopenia to 4.5 m in confirmed sarcopenia.
02For detecting any sarcopenia, the total distance walked alone entered the models, with area under the ROC curve 0.905 in women and 0.943 in men; cut-offs were 8.8 m or less for women and 11.3 m or less for men.
03For confirmed sarcopenia, the distance model had area under the ROC curve 0.870, and a total distance of 6.0 m or less had sensitivity 92.9%, specificity 83.3%, PPV 39.4%, and NPV 99.0%.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for RNs
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What it does not show
The study was done at one hospital and had few men, so the male cut-off is less secure. The models were not tested in a new population. The study could not separate severe sarcopenia from confirmed sarcopenia because the severe subgroup was small. Shorter walking distance was associated with sarcopenia, not proven to cause it. Other factors such as cognition, comorbidities, medications, and different rehabilitation plans can affect walking distance.
The easy way to misread this
Do not treat these cut-offs as diagnostic confirmation or as proof that walking less causes sarcopenia. The study was observational, had few men, and was not externally validated; for confirmed sarcopenia, a walk of 6.0 m or less flagged patients but only 39.4% of those flagged had confirmed sarcopenia.