Mental training pays off more when it runs for at least twelve weeks
4 studies · 59 archers measured
The summary today
The twelve-week threshold comes from a 2021 Korean meta-analysis of seventeen mental training studies with archers: programmes longer than twelve weeks have an average effect of g = 0.58, shorter ones 0.39, and the difference is significant (p = 0.025). In the same comparison neither the number of sessions per week nor the length of each session makes a difference. It is, however, a comparison between different studies, not between two durations tried on the same archers: the long programmes supply 26 effect estimates against 99 for the short ones, and they may differ in everything else, so much so that in the same meta-analysis the gap between university theses and journal articles (0.75 against 0.38) is larger than the gap due to duration. Within single programmes the picture points the same way but remains anecdotal: in three Korean archers followed for twenty-four weeks, anxiety and confidence barely move until week twenty-one and change only after the last phase, training under competition conditions, and in the Chinese national team mood and confidence improve significantly only once the programme is over, after five months. Nor is a short programme necessarily useless: after eight mindfulness sessions over four weeks rumination has already fallen by the halfway point and scores rise by 8 points out of 720, although with no control group.
Also phrased as: "how long mental training should last"; "twelve weeks of mental training"; "length of a mental skills programme"; "mental training takes time"
In practice
It is often said that mental training needs time: nothing shows before three months, and a programme of a few weeks does little.
Evidence
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2011
For Archers Published later
Three Korean archers who were candidates for the national team, an arousal control programme with heart rate biofeedback, 24 weeks with two sessions a week split into four phases, no control group. Measured in the first week, after week three, after week twenty-one and after week twenty-four: cognitive anxiety 2.68, 2.63, 2.63 and 2.26; somatic anxiety 2.67, 2.52, 2.41 and 1.92; confidence 1.85, 2.00, 2.18 and 2.85. The jump comes only after the last phase, training under competition conditions, so it cannot be said whether the duration mattered or the content of that phase; a regional journal.
Effect of Arousal Control Training Conjugated Heart Rate Biofeedback for National Substitute Archery Players · Seong-Taek Hong
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2021
For Review Published later
A meta-analysis of seventeen Korean psychological skills training studies with archers, published between 1990 and 2017, 273 participants, random effects model. Programmes longer than twelve weeks g = 0.581 (0.432 to 0.730) over 26 effect estimates, shorter than twelve weeks g = 0.393 (0.323 to 0.463) over 99 (Q = 5.03, p = 0.025). Three or more sessions a week against one or two: 0.637 against 0.428, not significant (p = 0.161); sessions under 60 minutes 0.639 against 0.496 for longer ones, not significant (p = 0.282). It is a comparison between different studies: in the same analysis university theses give 0.746 and journal articles 0.384 (Q = 12.95, p < 0.001), a larger gap than the one due to duration.
The Effects of Psychological Skills Training for Archery Players in Korea: Research Synthesis Using Meta-Analysis · Eui Jae Kim, Hyun Wook Kang, Seong Man Park
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2021
Context Archers Published later
23 competitive Taiwanese university archers, eight 60-minute mindfulness sessions over four weeks, before and after with no control group. General mindfulness goes from 4.36 to 4.52 at the midpoint and 4.67 at the end, sport mindfulness from 3.67 to 3.78 and 3.96: in both cases the difference is significant only between before and after (p = 0.032 and p = 0.004), while emotional rumination falls by the midpoint. The score over 72 arrows at 70 m rises from 613.5 to 621.7 (d = 0.27). It shows that a one-month programme changes something, not how much a longer programme would yield.
The Effects of Mindfulness-Based Intervention on Shooting Performance and Cognitive Functions in Archers · Tsung-Yi Wu, Jui-Ti Nien, Garry Kuan, Chih-Han Wu, Yi-Chieh Chang, Hsueh-Chih Chen, Yu-Kai Chang
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2023
Context Archers Published later
16 Chinese national team archers, five months of psychological preparation with weekly sessions of 60 to 90 minutes, then two months of observation without the programme, questionnaires every month. During the programme mood (POMS 118.40 against 123.94 at baseline) and confidence (SSCI 90.70 against 88.63) do not differ significantly from baseline; after the end they do (115.44 and 93.61; p = 0.029 and p = 0.037), which the authors read as an effect that matures over time. One athlete got worse on all three measures. No control group and no comparison between durations.
Applying skill-oriented and spirit-oriented psychological training to Chinese national archery team athletes: a single-case mixed-methods study · Na Xu, Weihua Yan, Mingyu Sun, Rui Li, Yingchun Wang, Lizhong Chi
Status history
- 1984 Not studied The registry's bibliography does not yet contain any mental training study with archers that looks at how long a programme needs before it pays off, or that compares programmes of different length.
- 2011 Reported The first finding that ties the result to time comes from three Korean archers who were candidates for the national team, followed for twenty-four weeks: anxiety and confidence barely move until week twenty-one and change only after the last phase, training under competition conditions, when confidence rises from 2.18 to 2.85 and somatic anxiety falls from 2.41 to 1.92. It points in the direction of the claim, but these are three people with no control group, and the passing of time coincides with a change of content: evidence in favour, and very limited, so reported.
- 2021 Reported The comparison behind the twelve-week threshold arrives: a meta-analysis of seventeen Korean studies with archers finds g = 0.58 for programmes longer than twelve weeks and 0.39 for shorter ones (p = 0.025), while the frequency and length of sessions make no difference. It is, however, a comparison between different studies, and in the same analysis the type of publication matters more. In the same year, after eight mindfulness sessions over four weeks, the scores of Taiwanese university archers rise by 8 points out of 720, with no control group: a short programme is not necessarily useless. Nobody has yet compared two durations in the same archers, and the status stays at reported.
- 2023 Reported In the Chinese national team five months of psychological preparation improve mood and confidence significantly only once the programme is over, not during it. That fits the idea that the effect needs time, but with no control group and no comparison between durations it adds no evidence on the twelve-week threshold: the status does not change.
Related
Related articles
- Does imagining the shot raise your score? What the studies measuredDoes imagining the shot raise your score? Forty years of studies on archers, from a 1986 correlation to controlled trials, and where the evidence stops.
- Mental skills training in archery: what the measurements on archers showWhat has been measured on archers' mental training: score, confidence, anxiety, programme length, mock competitions and each of the tools in turn.
- Periodisation for archers: how to structure the seasonPeriodisation for archers: macro, meso and microcycles applied to archery. How to plan your season to peak at the right time. What the research says.
Research lines
Cite
Campagna, M. (2026). Mental training pays off more when it runs for at least twelve weeks (Version 1). In Evidence Registry. Retrieved 16 October 2026, from https://matteocampagna.com/en/registry/mind/mental-training-programme-length
@misc{campagna2026_durataallenamentomentale,
author = {Campagna, Matteo},
title = {Mental training pays off more when it runs for at least twelve weeks},
year = {2026},
howpublished = {Evidence Registry, matteocampagna.com},
url = {https://matteocampagna.com/en/registry/mind/mental-training-programme-length},
note = {Version 1; accessed 2026-10-16}
}
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