title: Effects of interface pressure distribution on human sleep quality.
abstract: High sleep quality promotes efficient performance in the following day. Sleep quality is influenced by environmental factors, such as temperature, light, sound and smell. Here, we investigated whether differences in the interface pressure distribution on healthy individuals during sleep influenced sleep quality. We defined four types of pressure models by differences in the area distribution and the subjective feelings that occurred when participants slept on the mattresses. One type of model was showed "over-concentrated" distribution of pressure; one was displayed "over-evenly" distributed interface pressure while the other two models were displayed intermediate distribution of pressure. A polysomnography analysis demonstrated an increase in duration and proportion of non-rapid-eye-movement sleep stages 3 and 4, as well as decreased number of micro-arousals, in subjects sleeping on models with pressure intermediately distributed compared to models with over-concentrated or over-even distribution of pressure. Similarly, higher scores of self-reported sleep quality were obtained in subjects sleeping on the two models with intermediate pressure distribution. Thus, pressure distribution, at least to some degree, influences sleep quality and self-reported feelings of sleep-related events, though the underlying mechanisms remain unknown. The regulation of pressure models imposed by external sleep environment may be a new direction for improving sleep quality. Only an appropriate interface pressure distribution is beneficial for improving sleep quality, over-concentrated or -even distribution of pressure do not help for good sleep.
authors.affiliation: Sleep Research Center, DaZiRan Science and Technology Ltd., Guiyang, Guizhou, China.
authors.forename: Zongyong
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Sleep Research Center, DaZiRan Science and Technology Ltd., Guiyang, Guizhou, China.
authors.forename: Yuqian
authors.initials: Y
authors.lastname: Li
authors.affiliation: Sleep Research Center, DaZiRan Science and Technology Ltd., Guiyang, Guizhou, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.affiliation: Department of Sleep and Psychology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Gao
authors.affiliation: Department of Physiology, Third Military Medical University, Chongqing, China.
authors.forename: Quanhui
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Department of Physiology, Third Military Medical University, Chongqing, China.
authors.forename: Zhian
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Sleep Research Center, DaZiRan Science and Technology Ltd., Guiyang, Guizhou, China; Department of Physiology, Third Military Medical University, Chongqing, China.
authors.forename: Jiajun
authors.initials: J
authors.lastname: Guo
mesh_terms: D000328:Adult; D001143:Arousal / Q000502:physiology; D001513:Beds; D004311:Double-Blind Method; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D017286:Polysomnography; D011187:Posture / Q000502:physiology*; D011312:Pressure; D012890:Sleep / Q000502:physiology*; D013008:Somatotypes / Q000502:physiology; D055815:Young Adult