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Changes in biological rhythms under conditions of mismatch between administrative time and natural time | ||
| Caspian Journal of Environmental Sciences | ||
| دوره 24، شماره 1، فروردین 2026، صفحه 25-38 اصل مقاله (1.04 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22124/cjes.2026.9489 | ||
| نویسندگان | ||
| Askar Kalekeshov1؛ Ainur Junussova1؛ Yerlan Makashev2؛ Elzira Kyrbassova* 1؛ Meruyert Parmanbekova1؛ Ainur Rizbekova1؛ Mira Aitzhanova1؛ Rauassiya Massalimova3 | ||
| 1Kazakh National Women's Teacher Training University, Almaty, Kazakhstan | ||
| 2Institute of Genetics and Physiology, Almaty, Kazakhstan | ||
| 3Isatai Taimanov secondary school, Atyrau, Kazakhstan | ||
| چکیده | ||
| It is well established that adequate and proper sleep is essential for the health of children and adolescents. This study examined the effect of a 1.5–2-hour difference between administrative and natural time in Kazakhstan on adolescents (n = 120). In particular, adolescents in Atyrau, where administrative time is ahead of natural time, experienced chronic desynchronization. Consequently, this situation led to lowered sleep duration and quality, impaired cognitive performance, increased emotional instability, and compromised immune function. The predominance of “owl” and “dove” chronotypes among adolescents indicates a misalignment between their natural biological rhythms and school schedules. As a result, scores for memory, attention, and visual-motor reaction were below average. This decline in cognitive performance, particularly in the morning, negatively affected academic achievement. Notably, in the 9th grade, when classes started earlier, grades dropped across all subjects, demonstrating the direct impact of desynchrony on learning efficiency. Physiological compensatory responses were observed in the respiratory system, including increased vital capacity of lungs and related indicators, and the cardiovascular system was also investigated. Additionally, a marked rise in disease incidence was noted among girls. These findings suggest that prolonged desynchronization has a significant impact on adolescent health. | ||
| کلیدواژهها | ||
| Adolescent health؛ Desynchronosis؛ Biological rhythm؛ Time zone؛ Administrative time؛ Natural time | ||
| مراجع | ||
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