A1 Refereed original research article in a scientific journal
Influence of ultraviolet A1 exposures on mood states : a randomized controlled study
Authors: Haapasalo Annina, Pasternack Rafael, Kautiainen Hannu, Ylianttila Lasse, Snellman Erna, Partonen Timo
Publisher: Springer Nature
Publication year: 2024
Journal: Photochemical and Photobiological Sciences
Journal name in source: Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
Journal acronym: Photochem Photobiol Sci
Volume: 23
Issue: 7
First page : 1229
Last page: 1238
ISSN: 1474-905X
eISSN: 1474-9092
DOI: https://doi.org/10.1007/s43630-024-00587-6
Web address : https://link.springer.com/article/10.1007/s43630-024-00587-6
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/404701977
We investigated the effects of daily ultraviolet A1 (UV-A1, 340-400 nm) exposures on mood states (#R19055, approval on 21 October 2020). Based on our earlier findings of the influence of diurnal preference on mood, we investigated further whether diurnal preference plays a role in the influence of UV-A1 on mood states. Forty-one healthy participants aged 19-55 years were randomized to receive either UV-A1 (n = 21) or control (n = 20) exposures (violet light, 390-440 nm). The irradiations were administered on three consecutive mornings on the skin of the buttocks and middle back. Diurnal preference was assessed with the modified 6-item Morningness-Eveningness Questionnaire (mMEQ). Changes in mood were assessed with Total Mood Disturbance (TMD) score of the 40-item Profile of Mood States (POMS) before the first irradiation, immediately after each irradiation and one week after the last irradiation. Mood improved among those subjected to UV-A1 exposures compared with the controls (p = 0.031). Individuals with more pronounced morningness had mood improvement (p = 0.011), whereas those with more pronounced eveningness did not (p = 0.41). At follow-up of one week after the last irradiation the mood improvement had disappeared.
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