Effects of Interface Pressure Distribution on Human Sleep Quality

Chen, Zongyong; Li, Yuqian; Liu, Rong; Guo, Dong; Chen, Quanhui; Hu, Zhian; Guo, Jiajun

doi:10.1371/journal.pone.0099969

Cited by 12 publications

(23 citation statements)

References 36 publications

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“…Better pressure distribution may have reduced discomfort at sites of compression on the body's surface, reducing the fragmentation of SWS. Chen et al [11] reported that differences in pressure distribution of mattresses affected sleep. In the study, increase in SWS and the decrease in micro-arousals were observed in participants sleeping on pressure intermediately distributed mattress, compared to the ones that were overly-concentrated or overly-even in distribution of pressure [11].…”

Section: Discussionmentioning

confidence: 99%

“…Chen et al [11] reported that differences in pressure distribution of mattresses affected sleep. In the study, increase in SWS and the decrease in micro-arousals were observed in participants sleeping on pressure intermediately distributed mattress, compared to the ones that were overly-concentrated or overly-even in distribution of pressure [11]. In the present study, body pressures were actually lower with the functional mattress for all participants in every posture compared to the control mattress.…”

Section: Discussionmentioning

confidence: 99%

“…Momoko Kayaba, PhD 1,2 , Hitomi Ogata, PhD 3,4 , Insung Park, PhD 1,3 , Asuka Ishihara, BA 1,5 , Fusae Kawana, BSc, RPSGT 1,6 , Toshio Kokubo, PhD 1 , Shoji Fukusumi, PhD 1 , Michiko Hayashi, PhD 1 , Kumpei Tokuyama, PhD 1,3 , Masashi Yanagisawa, MD, PhD 1 , Makoto Satoh, MD, PhD 1 comfort" have been used to describe the different types of mattresses used [8][9][10], while some studies provided no detailed information about their mattresses [11,12], making experiments difficult to repeat. Other studies evaluated the effects of mattresses on pressure distribution and spinal distortion but did not measure sleep quality [13][14][15][16].…”

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

“…A limited number of studies have used polysomnography (PSG) to assess the effects of mattress condition on sleep architecture [11,12,18]. Focusing on the pressure distribution, Chen et al [11] reported an association between the distribution of pressure over a mattress and the amount of slow wave sleep (SWS) and micro-arousals experienced. However, even though the general characteristics of the mattresses in this study were reported, there were no descriptions on the composition of each layer of the mattress, their thickness, or the specific differences between the mattresses.…”

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

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Improvement of Slow Wave Sleep Continuity by Mattress with Better Body Pressure Dispersal

et al. 2019

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Background and ObjectiveaaThis study evaluated the effects of a mattress with better body pressure dispersal in comparison to a control mattress on sleep quality. MethodsaaIn this randomized crossover study, 10 healthy young men slept in an experimental sleep room on either a functional mattress made from polyurethane, with a special four-layer three-dimensional structure, or a control mattress made from solid polyester wadding, which is a mattress commercially available in Japan. Polysomnography recordings were used to characterize sleep architecture, and the length of slow wave sleep (SWS) episodes and delta power density were calculated from the electroencephalography data and subjective sleep quality was evaluated by questionnaire they answered after waking. ResultsaaThere were no significant differences in sleep latency, the total duration of each sleep stages, total sleep time, or sleep efficiency. Although the difference was subtle, delta power density significantly increased with the functional mattress. There was no difference in the total duration of SWS, but there were significantly fewer SWS episodes with the functional mattress (10.3 ± 1.8) than with the control mattress (16.9 ± 1.2) and longer SWS episode duration (10.9 ± 1.7 min) with the functional mattress than with the control mattress (5.6 ± 0.5 min). ConclusionsaaIt was suggested that the functional mattress lengthened SWS episode duration, and its fragmentation was effective in evaluating the sleep quality of healthy young individuals. Sleep Med Res 2019;10(2):75-82

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

Section: Improvement Of Slow Wave Sleep Continuity By Mattress With Bmentioning

confidence: 99%

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Improvement of Slow Wave Sleep Continuity by Mattress with Better Body Pressure Dispersal

et al. 2019

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Development of latex foam pillows from deproteinized natural rubber latex

et al. 2021

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Currently there is significant demand for pillows with improved pressure-relief features made from natural materials, alternatives to petrochemical-based foams. In order to meet the requirements, this study's approach is to develop latex foam pillows from deproteinized natural rubber (DPNR) latex with a unique dual-density cervical-shaped structure. In this work, DPNR latex foam pillows were produced at three different density levels which are high-density, medium-density and low-density. Extractable protein content of latex foam made from DPNR was confirmed lower than latex foam made from low ammonia NR latex (LATZ) and of commercial NR latex foams, making DPNR pillows more hypoallergenic than others. The physical properties of the produced DPNR latex foams were examined in accordance with Malaysian Standard MS679, and were found to comply with all requirements stipulated in standard specifications. A novel dual-density cervical-shaped DPNR latex foam pillow prototype was produced where the pillow has lower density at the upper part and higher density at the lower part. Pressure-mapping was used to visualize the pressure distribution patterns and to measure the average peak pressure when a mannequin head was placed on top of the pillow. The study observed that decreasing the density increases the softness of the DPNR latex foam. Softer latex foams led to larger surface contact area, and hence a reduced average peak pressure value. This cervical-shaped structure further increased the surface contact area between the pillow and mannequin head, and thus reduced further the average peak pressure value.

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Effects of body position on sleep architecture and quality in subsyndromal adults without apparent obstructive sleep apnea

Özçelik

Bayram

Doganay

et al. 2015

Sleep and Biological Rhythms

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There is a well-known relationship between sleep quality and body position during sleep in patients with obstructive sleep apnea (OSA). In this study, we aimed to investigate the effects of body position on sleep architecture and sleep quality in subjects without sleep apnea. One hundred and one subjects between 24 and 77 years of age, who had undergone polysomnography and had a respiratory disturbance index (RDI) below 5 were included in the study. Sleep stages and sleep parameters in the right, left, supine and prone positions were examined. Mean sleep duration in S2, S3 and rapid eye movement (REM) were 110, 39 and 20.7 min in supine position and 61, 28 and 17 min in right position, respectively. Mean RDI at supine position was higher than other positions. Mean minimal oxygen saturation at supine position was significantly lower than other positions. Maximal heart rate and mean arousal index were significantly higher in the supine position. Duration of sleep was highest in the right position in those older than 60 years. Subjects with 40-60 years age had higher duration of sleep in right and supine positions. Female subjects slept more in supine position whereas male ones slept more in right position. Stages of sleep may change according to position. Deteriorations in the parameters of sleep quality (RDI, lowest saturation, arousal index, heart rate) occur in individuals with RDI < 5 as well as in patients with OSA in the supine position.

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Effects of Interface Pressure Distribution on Human Sleep Quality

Cited by 12 publications

References 36 publications

Improvement of Slow Wave Sleep Continuity by Mattress with Better Body Pressure Dispersal

Improvement of Slow Wave Sleep Continuity by Mattress with Better Body Pressure Dispersal

Development of latex foam pillows from deproteinized natural rubber latex

Effects of body position on sleep architecture and quality in subsyndromal adults without apparent obstructive sleep apnea

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