https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming 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/bow-stability-while-aimingThe studies divide, and not by chance: each measures something different and calls it bow stability. The results in favour are the more numerous and, in recent years, the more solid. Within a single archer, in 7 international junior archers the window the sight travels in the final second is smaller on 10s than on arrows scoring 8 or less, in all seven of them; in 8 national-level archers the bow travels 28.8 cm on the worst arrow against 17.8 on the best. Between archers, an accelerometer on the bow of 11 Japanese university archers predicts the score of the round with R = -0.79, holding at -0.74 on archers held out of the model's training, and in 15 Turkish national-team archers the more the aiming point oscillates the lower the score (r = -0.776 with the placebo). Null results exist all the same, and at both levels: in four elite archers, reported in two papers on the same shots, the amplitude of the sight's oscillation is the same on 10s and on 8s; among the 7 juniors the archer who holds the bow stillest does not have the highest average; the tremor that predicts the round does not predict the individual arrow; and in 32 young Malaysian archers and 27 regional compound archers bow movement does not separate the stronger from the weaker. Those results come from few archers or few arrows, from regional journals or from measures that are barely described, but none of them has been explained, and as long as one study measures the area the sight travels, another the amplitude of the oscillation and a third the acceleration of the bow, the results cannot be added together.claim:stabilita-arco-mira:revision:2026-08-13:4Thu, 13 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaThe same Malaysian group as in 2017 compares four archers, one per level in two pairs: the medallist moves the bow less while aiming than the non-medallist, and the experienced archer less than the novice. These are charts described in words, with no figures and no test, in a journal with questionable editorial standards, so the direction is noted but not counted. The status stays contested.claim:stabilita-arco-mira:history_entry:2026-08-08:2018Sat, 08 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaA master's dissertation on eight archers from the Great Britain programme comes at the question from another side: made to stay at full draw for two or three times their usual hold, the bow-hand wrist moves a little more, from 3.21 to 3.87 centimetres per second, and the mean score falls from 8.60 to 7.75 per arrow. Movement and score get worse together, but nobody relates them arrow by arrow, the triple hold always comes last and adds to fatigue, and the measure is the wrist, not the bow: it is context. The status stays contested, because the null result of 2010 still has no explanation.claim:stabilita-arco-mira:history_entry:2026-08-08:2015Sat, 08 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaA second between-group comparison, thirty-two Malaysian archers aged thirteen to twenty with an inertial sensor on the bow hand at fifty metres, again finds no difference: the twenty stronger and the twelve weaker archers move the bow the same way (p = 0.126), while they do separate on body sway. A single end of six arrows and groups built by the analysis itself, so it carries little weight, but it points the same way as the other comparisons between archers. The status does not change: both within the archer and between archers, some studies find the link and some do not.claim:stabilita-arco-mira:history_entry:2026-05-30:2017Sat, 30 May 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaA background measurement, once again not on the aim itself. In a single archer, thirty-six arrows at thirty metres with a laser pointer on the grip filmed at 1,200 frames per second, the bow's movement in the final twentieth of a second, the release, is linked to the error on the target mostly in height, with correlations between 0.45 and 0.68 in absolute value and no p values. It concerns the release rather than the aim, and one archer: the status stays reported.claim:stabilita-arco-mira:history_entry:2026-05-30:2009Sat, 30 May 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaThe first contrary result arrives, but it does not concern the aim. In eight experienced Korean university archers, measured with three-dimensional kinematics, the variability of the bow's vertical displacement in the follow-through is not linked to average score, which runs from 8.58 to 9.50 per arrow. It looks at what comes after rather than during, on eight people and in a regional journal: one weak comparison on the follow-through is not enough to call the two measurements on the aim into question, and the status stays reported.claim:stabilita-arco-mira:history_entry:2026-05-30:2008Sat, 30 May 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaThe first comparison between archers of different levels concerns not movement while aiming but position at the release. Nine skilled archers split by handicap, eight of whom enter the analysis, with optical markers on the head, the elbow and the bow at fifteen metres: the position of the bow relative to the head at the moment of release is no more consistent in the elite than in the county archers, if anything less so, and the analyses of variance do not separate the two groups. It does not measure how much the bow moves during the aim and does not link it to score, so it enters as context: among the sources there is still only the 1976 observation of the release, and sway while aiming remains unstudied.claim:stabilita-arco-mira:history_entry:2026-05-30:1990Sat, 30 May 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aiming#storiaThe contrast sharpens inside a single year. Across fifty clips from international competitions, the more the drawing arm moves while aiming the lower the arrow's score, with rho of minus 0.393, while the movement of the bow arm is tied to nothing. A systematic review finds less bow sway on the better shots in three studies out of five, and no difference between levels in the other two. In twenty-seven regional compound archers, bow-arm stability turns out not to be linked to the score at fifty metres. The status stays contested, and the reason is always the same: every study measures a different thing and they all call it bow stability.claim:stabilita-arco-mira:status_change:2026-03-23:contestatoMon, 23 Mar 2026 08:00:00 GMT https://matteocampagna.com/en/registry/technique/bow-stability-while-aimingclaim:stabilita-arco-mira:new_claim:2026-01-12:riportatoMon, 12 Jan 2026 08:00:00 GMT