https://matteocampagna.com/en/registry/health/period-pain-and-score 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/period-pain-and-scoreThere are two measurements, both small, and neither finds a significant drop in the average. In 2019 ten Turkish compound archers, measured on the third day of menstruation and on a day outside it, score 8.79 points per arrow against 9.04, a difference that is not significant, but the study appears in a journal with questionable editorial standards and in this registry it does not decide the status. What does decide it arrives in 2021: twenty archers from a Jakarta university club shoot 36 arrows without pain and 36 on a day of period pain: 283.5 points against 272.1, eleven points down out of 360, too few to stand out from chance with twenty athletes. The same study does show something else, though: the average changes little, the spread rather more. The group's best score stays almost the same, 335 against 330, while the worst falls from 213 to 176. Women archers, when asked, see it differently: in a questionnaire given to 142 Turkish archers eight in ten say that on the days of menstruation competition and training are always or sometimes affected, but this is a reported impression, in a questionable venue, and it concerns the cycle more than pain. Neither study used a hormone test to define the comparison day outside menstruation (the first measures some hormones but does not use them to place the phase), measured how severe the pain was or asked about painkillers, and with a single series per condition a difference of ten or so points cannot be detected. That is why the fair reading is that no drop in the average has emerged, not that period pain does not matter.claim:dismenorrea-punteggio:revision:2026-08-19:3Wed, 19 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/health/period-pain-and-score#storiaWhat women archers say about themselves is added: in a questionnaire given to 142 archers at the Turkish championship, eight in ten report that on the days of menstruation competition and training are always or sometimes affected, and only 5.6% name those days as the time they perform best. It is an impression rather than a measured score, it concerns the cycle rather than pain, and the study appears in a journal with questionable editorial standards: it shows that the question matters to archers, but there is still no measurement that counts. Not studied.claim:dismenorrea-punteggio:history_entry:2026-08-19:2020Wed, 19 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/health/period-pain-and-scoreclaim:dismenorrea-punteggio:new_claim:2026-06-22:riportatoMon, 22 Jun 2026 08:00:00 GMT