Predictive Equations Overestimate Resting Metabolic Rate in Survivors of Chronic Stroke.
Alice S Ryan, Maria Novitskaya, Alice L Treuth
PMID 35192798WHAT IT FOUND
Standard equations overestimated resting metabolic rate in chronic stroke survivors by 9% to 60%.
Using these predictions for calorie targets risks weight gain. Equations relying on lean body mass were most accurate, but all tested methods exceeded measured needs.
Key findings
01All nine tested predictive equations overestimated resting metabolic rate in chronic stroke survivors.
02Eight equations overestimated by 9% to 20%, while one equation overestimated by 60%.
03Measured resting metabolic rate was associated with appendicular lean mass and VO2 peak, but not with six-minute walk distance.
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 included more males than females, which may limit generalizability to all stroke survivors. Strict exclusion criteria removed patients with aphasia, dementia, and severe comorbidities, so results do not apply to those groups. Data for the six-minute walk test was missing for 19 participants. The sample size was sufficient for comparison but may be too small to derive a new, more accurate prediction equation.
Declared interests
The research was supported by the U.S. Government and the National Institutes of Health (Extramural). No commercial conflicts of interest were declared.
The easy way to misread this
Do not assume the most accurate equation (Katch-McArdle) is error-free. It still overestimated metabolic rate by an average of 76 kcal/day. All tested equations, even the best-performing ones, predicted higher energy needs than the patients actually burned.