https://matteocampagna.com/en/registry/health/heart-rate-variability-aerobic-fitness Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb https://matteocampagna.com/en/registry/health/heart-rate-variability-aerobic-fitnessNobody has ever measured this in archers: the idea comes from general physiology. A review of heart rate variability biofeedback summarises the studies in which people with low and less complex variability are older and less aerobically fit, and this entry stops at that part. The same review also links low variability to illness, but that link comes largely from patients, and in this registry studies of clinical populations cannot support a claim: that is why this entry does not say that high variability is a sign of health. The 2017 methodological recommendations add a caution: higher resting vagal tone is usually a favourable sign, but not always, and there are conditions in which it is high for reasons unrelated to fitness. What is missing is the step to the archer, and the primary studies too: the review summarises, and the registry holds no measurement setting an archer's variability beside their aerobic capacity. It therefore stays transferred.claim:hrv-alta-segno-salute:revision:2026-05-02:2Sat, 02 May 2026 08:00:00 GMT https://matteocampagna.com/en/registry/health/heart-rate-variability-aerobic-fitnessclaim:hrv-alta-segno-salute:new_claim:2026-03-17:trasferitoTue, 17 Mar 2026 08:00:00 GMT