Improvement of slow wave sleep continuity by mattresswith better body pressure dispersal

Momoko Kayaba, Hitomi Ogata, Insung Park, Asuka Ishihara, Fusae Kawana, Toshio Kokubo, Shoji Fukusumi, Michiko Hayashi, Kumpei Tokuyama, Masashi Yanagisawa, Makoto Satoh

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)75-82
Number of pages8
JournalSleep Medicine Research
Issue number2
StatePublished - Dec 1 2019
Externally publishedYes


  • Beds
  • Polysomnography
  • Slow wave sleep
  • Young adults

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Neurology
  • Clinical Neurology
  • Psychiatry and Mental health
  • Physiology (medical)


Dive into the research topics of 'Improvement of slow wave sleep continuity by mattresswith better body pressure dispersal'. Together they form a unique fingerprint.

Cite this