Bed heating improves the sleep quality and health of the elderly who adapted to no heating in a cold environment

Xia, Liang; Lan, Li; Tang, Jiwei; Wan, Yijun; Lin, Yanbin; Wang, Zhentao

doi:10.1016/j.enbuild.2019.109687

Cited by 47 publications

(14 citation statements)

References 35 publications

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“…Before the electrodes were attached to their respective positions, their exfoliation was removed such that the maximum impedance was 5 k

[ 51 ]. As shown in Figure 4 , the participant had a 10 min adaption time lying on the mattress [ 52 , 53 ]. The participants went to bed at 11 p.m. and slept for 7 h in a room where the temperature and humidity were maintained at 24

C and 50% RH, respectively.…”

Section: Methodsmentioning

confidence: 99%

Effect of an Inflatable Air Mattress with Variable Rigidity on Sleep Quality

Shin

Kim

et al. 2020

Sensors

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Several studies, wherein the structure or rigidity of a mattress was varied, have been conducted to improve sleep quality. These studies investigated the effect of variation in the surface characteristics of mattresses on sleep quality. The present study developed a mattress whose rigidity can be varied by controlling the amount of air in its air cells. To investigate the effect of the variable rigidity of the air mattress on sleep quality, participants (Male, Age: 23.9 ± 2.74, BMI: 23.3 ± 1.60) were instructed to sleep on the air mattress under different conditions, and their sleep quality was subjectively and objectively investigated. Subjectively, sleep quality is assessed based on the participants’ evaluations of the depth and length of their sleep. Objectively, sleep is estimated using the sleep stage information obtained by analysing the movements and brain waves of the participants during their sleep. A subjective assessment of the sleep quality demonstrates that the participants’ sleep was worse with the adjustment of the air mattress than that without; however, the objective sleep quality results demonstrates an improvement in the sleep quality when the rigidity of the air mattress is varied based on the participant’s preference. This paper proposes a design for mattresses that can result in more efficient sleep than that provided by traditional mattresses.

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“…Before the electrodes were attached to their respective positions, their exfoliation was removed such that the maximum impedance was 5 k

C and 50% RH, respectively.…”

Section: Methodsmentioning

confidence: 99%

Effect of an Inflatable Air Mattress with Variable Rigidity on Sleep Quality

Shin

Kim

et al. 2020

Sensors

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“…Previous research found that the sleeping on an adequate mattress has been observed to improve the sleep quality [4][5]. The quality of a mattress depends on a number of characteristics including the adaptability to the body shape, the pressure distribution to the human body [6][7], or the ability to facilitate adequate thermoregulation [8][9]. Among all of these, the latter exhibits the largest effect on the sleep quality perceived by the user [10].…”

Section: Instructionsmentioning

confidence: 99%

An experiment to assess the heat transfer performance of thermoelectric-driven conditioned mattress

Shen

Huang

2022

THERM SCI

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This study sets out to describe the design, construction and testing of thermoelectric-driven conditioned mattress intended to reduce the human-mattress interface temperature, in order to satisfy the personal sleep thermal comfort requirements in hot conditions. A prototype of thermoelectric-driven conditioned mattress is constructed and tested. A series of experimental studies related to the temperature of different cushion layers and time from start-up to stable state have been carried out, specifically to analyze the difference in heat transfer performance of two types of temperature control layers (i.e., integral water cushion and circulating water pipes) in cooling operations. The steady-state results showed that, the type of temperature control layer and pre-set temperature exhibited a remarkable influence on the cooling performance of mattress. The mattress with integral water cushion had a superior cooling performance as compared to mattress with circulating water pipes under similar consitons. Specifically, the upper surface temperature of mattress with integral water cushion at the the pre-set temperature of 20?C, 18?C and 16?C were 1.97?C, 2.46?C and 3.08?C lower than indoor air temperature, respectively. Besides, the temperature contour maps of temperature control layer and upper cushion layer for two types of mattresses were constructed using the bilinear interpolation, respectively, thus expected to provide reference for the untested temperatures in this study. This study aims to effectively evaluate the heat transfer performance of the thermoelectric-driven conditioned mattress, and shows highly practical value in further applications of this system in improving human thermal comfort during sleep.

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“…Human thermal comfort in outdoor spaces is significantly related to the microclimate condition, such as air temperature, radiation, wind, etc. [32][33][34]. These parameters in urban spaces are spatially variable due to the modification of surface energy and radiation balance in different local climate zones.…”

Section: Level 3: Outdoor Thermal Comfortmentioning

confidence: 99%

Applications of Local Climate Zone Classification Scheme to Improve Urban Sustainability: A Bibliometric Review

et al. 2020

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Many of the sustainable urban development issues, such as human heath, energy consumption, carbon emission, are related to the climate of cities. As a result, research insights gained in urban climate study can be applied to improve urban sustainability. Although the Local Climate Zones (LCZ) scheme was originally proposed to provide a standardized classification of landscapes to study urban air temperature, its use was not limited to the study of urban heat islands. This study explores the applications of LCZ scheme in various research domains by conducting a bibliometric analysis in CiteSpace on over 800 articles that cites the original article of LCZ. These articles cover a wide range of research categories including meteorology, atmospheric science, environmental science, remote sensing, building technology, civil engineering, ecology, urban studies, etc. The LCZ scheme facilitates urban climate data collection by refining monitoring network, providing reasonable modelling input, and improving database documentation. In addition to the study of urban heat islands, the LCZ scheme was applied in studies of urban thermal comfort, human health, building energy consumption, and carbon emission. The diffusion of the LCZ scheme to other research domains offers an example that the development of urban climate research advances sustainable urban development. This review provides insights of multidisciplinary studies related to urban climate for policy-makers, urban specialists, architects, ecologists, and others.

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Bed heating improves the sleep quality and health of the elderly who adapted to no heating in a cold environment

Cited by 47 publications

References 35 publications

Effect of an Inflatable Air Mattress with Variable Rigidity on Sleep Quality

Effect of an Inflatable Air Mattress with Variable Rigidity on Sleep Quality

An experiment to assess the heat transfer performance of thermoelectric-driven conditioned mattress

Applications of Local Climate Zone Classification Scheme to Improve Urban Sustainability: A Bibliometric Review

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