2026-10-11T14:45:58Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34034611 2026-09-30T17:26:29Z category_15 category_734 category_106 category_122 portal_5 item_type_3 month_year_09_2026

<p>Linear mixed-effects model (LMEM) of sleepiness.</p> Lucie Ráčková (11205153) Madison Diamond (25145044) Markéta Makarová (18463334) Pavel Morcinek (25145047) Inès Butin (25145050) Federico Nemmi (6006869) Stanislas Boyer (24642603) Laure Boyer (24700747) Julie Bienertová Vašků (25145053) Emma Chabani (25145056) Neuroscience Biological Sciences not elsewhere classified Science Policy Mental Health include diverse populations heart rate variability frontal alpha asymmetry controlled crossover double based laboratory setting trial </ p intervention following exposition stress management research combining coherent breathing increased positive affect coherent breathing future research negative affect subjective stress stress response combining 0 acute stress workplace setting xlink "> term outcomes study evaluates study contributes randomized double os device occupational settings improve well findings suggest examine long electroencephalography metrics ci 21 blue light blind design blind cross beta ratio 85 points 84 points 54 ). 29 individuals 17 ), &# 201 <div><p>This study evaluates the effectiveness of an innovative tertiary stress management intervention for workplace application, combining 0.1 Hz coherent breathing with blue light exposure via the ÉOS device. We hypothesize that the intervention can mitigate acute stress reactions and sleepiness more effectively than passive rest without external stimulation. Using a randomized-controlled crossover double-blind design in a workplace-based laboratory setting, we assessed the effect of an intervention following exposition to Maastricht Acute Stress Test in 29 individuals. Subjective stress (single item scale), sleepiness (Karolinska Sleepiness Scale), positive and negative affect (Positive and Negative Affect Schedule), along with heart rate variability (HRV) and electroencephalography metrics were evaluated using linear mixed-effect models. The intervention significantly reduced subjective stress by 31.23% (CI 21.41% and 41.83%), decreased sleepiness by 0.84 points (SE 0.17), and increased positive affect by 1.85 points (SE 0.54). No significant effect was found on negative affect, HRV, frontal alpha asymmetry or theta/beta ratio. The findings suggest that combining coherent breathing with blue light exposure effectively reduces acute stress and enhances mood without causing sleepiness, making it a promising workplace stress intervention. This study contributes to stress management research by demonstrating the potential of these tertiary stress management interventions to improve well-being and performance in occupational settings. Future research should evaluate the individual effects of each component, examine long-term outcomes, and include diverse populations to strengthen these findings.</p></div> 2026-09-30T17:26:22Z Dataset Dataset 10.1371/journal.pone.0357293.t004 https://figshare.com/articles/dataset/_p_Linear_mixed-effects_model_LMEM_of_sleepiness_p_/34034611 CC BY 4.0