Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer

It has been determined that siestas could potentially have both mental and physical influences on the human body. However, the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment had not yet been examined in detail. In order to explore the pot...

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Main Authors: Huili Yu, Xue Zhao, Liping Chen, Xiaohui Tian, Shimin Liang, Songtao Hu
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2025-06-01
Series:Energy and Built Environment
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Online Access:http://www.sciencedirect.com/science/article/pii/S2666123324000084
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author Huili Yu
Xue Zhao
Liping Chen
Xiaohui Tian
Shimin Liang
Songtao Hu
author_facet Huili Yu
Xue Zhao
Liping Chen
Xiaohui Tian
Shimin Liang
Songtao Hu
author_sort Huili Yu
collection DOAJ
description It has been determined that siestas could potentially have both mental and physical influences on the human body. However, the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment had not yet been examined in detail. In order to explore the potential influences of siestas on nocturnal sleep, twenty subjects were recruited and divided into two groups based on whether they took siestas or not. During this study's experiment, the temperature was maintained at 25 °C, and sleep duration was recorded throughout the night. In addition, thermal comfort votes (TCV) and thermal satisfaction votes (TSV) were obtained both before and after the nocturnal sleep. Furthermore, dopamine (DA) levels, which played important roles in emotional regulation, were measured after the nocturnal sleep. Results showed that the siesta group had a significant increase in self-reported nocturnal sleep quality (p < 0.05), although slight decreases in slow-wave sleep (SWS) duration and rapid eye movement (REM) duration were observed. Additionally, higher TCV and TSV values were reported in the siesta group (p < 0.05). Higher DA concentration was also detected in the siesta group after the nocturnal sleep. Furthermore, some correlations were illustrated between the thermal voting values and the sleep duration, as well as the DA concentration levels. Results implied that siestas could have an influence on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment. Besides, DA concentration levels played an important role in the thermal comfort evaluations when exploring the influences of siestas on nocturnal sleep.
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institution Kabale University
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spelling doaj-art-1427e010253f4ec88da2502751cd124a2025-02-08T05:01:11ZengKeAi Communications Co., Ltd.Energy and Built Environment2666-12332025-06-0163448454Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summerHuili Yu0Xue Zhao1Liping Chen2Xiaohui Tian3Shimin Liang4Songtao Hu5School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaCorresponding author.; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Peoples R ChinaIt has been determined that siestas could potentially have both mental and physical influences on the human body. However, the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment had not yet been examined in detail. In order to explore the potential influences of siestas on nocturnal sleep, twenty subjects were recruited and divided into two groups based on whether they took siestas or not. During this study's experiment, the temperature was maintained at 25 °C, and sleep duration was recorded throughout the night. In addition, thermal comfort votes (TCV) and thermal satisfaction votes (TSV) were obtained both before and after the nocturnal sleep. Furthermore, dopamine (DA) levels, which played important roles in emotional regulation, were measured after the nocturnal sleep. Results showed that the siesta group had a significant increase in self-reported nocturnal sleep quality (p < 0.05), although slight decreases in slow-wave sleep (SWS) duration and rapid eye movement (REM) duration were observed. Additionally, higher TCV and TSV values were reported in the siesta group (p < 0.05). Higher DA concentration was also detected in the siesta group after the nocturnal sleep. Furthermore, some correlations were illustrated between the thermal voting values and the sleep duration, as well as the DA concentration levels. Results implied that siestas could have an influence on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment. Besides, DA concentration levels played an important role in the thermal comfort evaluations when exploring the influences of siestas on nocturnal sleep.http://www.sciencedirect.com/science/article/pii/S2666123324000084SiestasNocturnal sleep qualityThermal comfortThermoneutral environmentDopamine
spellingShingle Huili Yu
Xue Zhao
Liping Chen
Xiaohui Tian
Shimin Liang
Songtao Hu
Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
Energy and Built Environment
Siestas
Nocturnal sleep quality
Thermal comfort
Thermoneutral environment
Dopamine
title Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
title_full Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
title_fullStr Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
title_full_unstemmed Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
title_short Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
title_sort experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
topic Siestas
Nocturnal sleep quality
Thermal comfort
Thermoneutral environment
Dopamine
url http://www.sciencedirect.com/science/article/pii/S2666123324000084
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