https://matteocampagna.com/en/registry/technique/shoulder-rotation-follow-through 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/technique/shoulder-rotation-follow-throughThe reference figures come from two Korean studies by the same research group, both using infrared cameras. The first, in 2007, follows a single world-class archer over sixty arrows at 70 metres: up to the release the shoulder moves two and a half degrees horizontally, through the follow-through 31.4, at a mean speed of 94 degrees per second. The second, in 2008, measures 96 shots from eight experienced university archers and finds the horizontal rotation between 25 and 35 degrees in about three shots out of four, with a mean of 31.2. On the range of movement the two studies agree. On speed much less so: in 2008 the most frequent band is 90 to 110 degrees per second, but it holds only one shot in three, the mean is 135 and the best scores fall at around 120. About thirty degrees is therefore a fairly stable value, although it was measured on nine archers in all and in a regional journal; the speed, between the 94 degrees per second of the single case and the 135 average of the second study, does not yet give a reference.claim:follow-through-valori-tipici:revision:2026-06-22:2Mon, 22 Jun 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/shoulder-rotation-follow-throughclaim:follow-through-valori-tipici:new_claim:2026-06-15:riportatoMon, 15 Jun 2026 08:00:00 GMT