2025 / 04

DOI: 10.24075/rbh.2025.149
Copyright: © 2025 by the authors. Licensee: Pirogov University.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (CC BY).

ORIGINAL RESEARCH

Dynamics of mental performance in schoolchildren under poor indoor climate conditions and elevated carbon dioxide levels

Lobkis MA , Novikova II , Romanenko SP , Sorokina AV
About authors

Novosibirsk Research Institute of Hygiene of Rospotrebnadzor, Novosibirsk, Russia

Correspondence should be addressed: Sergey P. Romanenko
Parkhomenko, 7, Novosibirsk, 630108, Russia; us.giin@ps_oknenamor

About paper

Author contribution: Novikova II, Lobkis MA ― concept and design of the study; Lobkis MA, Romanenko SP, Sorokina AV ― collection and processing of the material; Lobkis MA, Romanenko SP ― statistical processing of the material; Lobkis MA, Sorokina AV ― article authoring; Novikova II, Romanenko SP ― editing.

Compliance with ethical standards: the study design was previously reviewed by the Local Ethics Committee of the Novosibirsk Research Institute of Hygiene of Rospotrebnadzor (Minutes No. 2 of February 1, 2024). The parents/legal representatives have filled the informed consent forms for the children's participation in the study.

Received: 2025-06-25 Accepted: 2025-12-26 Published online: 2025-12-31
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Fig. 1. Characteristics of schoolchildren by performance, %
Fig. 2. Dispersion diagram of correlations between CO2 concentration, temperature, relative humidity, and the performance coefficient
Fig. 3. Effectiveness of mnemonic processes among students throughout the school day, %
Fig. 4. Distribution of students' short-term memory efficiency depending on the actual carbon dioxide concentrations over the entire monitoring period
Fig. 5. Dispersion diagram of correlations between microclimate indicators and CO2 concentration and the number of correct answers
Fig. 6. Distribution of students' fatigue levels depending on the actual carbon dioxide concentrations over the entire monitoring period
Table 1. Mean microclimate parameters and CO2 concentration during the school day over a week