Refining Maximal Heart Rate Estimation to Enhance Exercise Recommendations for Persons With Parkinson Disease.
Anson B Rosenfeldt, Amanda L Penko, Amy Elizabeth Jansen and 6 others
PMID 40194736WHAT IT FOUND
A Parkinson-specific formula using age and resting heart rate estimated maximal heart rate more accurately than age-only formulas, which overestimated it in 88% and 94% of participants.
Key findings
01A Parkinson-specific maximal heart rate estimator used age and resting heart rate: 166 - 1.15 * age + 0.60 * resting heart rate.
02The traditional equations 220 - age and 208 - (0.7 * age) overestimated observed maximal heart rate in 88% and 94% of participants, respectively.
03The new estimator's mean squared error was 256, compared with 711 and 1054 for the age-only equations, reductions of 63% and 75%.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The analysis used baseline data from 82 participants in one trial, so it may not apply to people with Parkinson disease outside that sample. Participants taking beta-blockers were excluded, so the formula may not be valid for people on heart-rate-modifying medication. The new equation still overestimated maximal heart rate in 4 participants whose observed maximal heart rates were below 100 bpm. The model was internally cross-validated but not tested in an independent cohort or linked to exercise adherence or clinical outcomes. The supplied text reports estimation accuracy, not intervention outcomes.
Declared interests
The supplied metadata lists NIH extramural research support; no author conflict-of-interest declaration is included.
The easy way to misread this
Do not assume the new formula is validated for all people with Parkinson disease or that it improves exercise outcomes. It was estimated in 82 baseline participants, excluded beta-blockers, and was not externally validated.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →