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Authors
Holopainen, Marianne https://orcid.org/0000-0001-9765-8666
Hintsanen, Mirka
Lahti, Jari
Vahlberg, Tero
Volanen, Salla-Maarit
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Funding
Funding for this research was provided by:
Emil Aaltosen Säätiö
Niilo Helander Foundation
Juho Vainion Säätiö
Signe ja Ane Gyllenbergin Säätiö
Mats Brommels Foundation
Yrjö Jahnssonin Säätiö
Svenska Kulturfonden
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Article History
Accepted: 12 December 2025
First Online: 13 January 2026
Declarations
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: The study plan of the HLM project was approved by the Ethical Review Board of the University of Helsinki in January 2014. The procedures used in this study adhere to the tenets of the Declaration of Helsinki.
: All participating students and their parents voluntarily offered written informed consent.
: The authors declare no competing interests.
: AI was used for editing the manuscript to improve the English language.
: Healthy Learning Mind—a school-based mindfulness and relaxation program: a study protocol for a cluster randomized controlled trial (RCT) ISRCTN18642659 retrospectively registered on 13 October 2015. The full trial protocol can be accessed at .
