0958 Use of a Hybrid Mattress Improves Objective and Perceived Sleep Outcomes

Abstract

Abstract Introduction Previous research has shown that comfort, including comfort of the sleep surface, is essential to sleep quality. In addition to comfort, the structure and firmness of a mattress may also play a role when it comes to sleep quality. More empirical research is needed to establish the impact of particular mattresses on both objective and self-reported measures of sleep quality. This study compared sleep on a hybrid mattress to participants’ prior sleep on their original mattress. Methods Healthy adults (81% female, ages 25-67) who reported sleeping hot participated in a 10-week field study, using a pre-post intervention design. During the 4-week baseline period, participants used their regular mattress at home. During the 4-week intervention period, which occurred following a 2-week adjustment period, they used a Serta iSeries mattress at home. This hybrid mattress includes materials designed to help the user feel cool. Sleep was measured objectively using SleepScore Max every night and by daily and pre-post self-report. Multilevel regression and paired t-tests were used to test for statistical significance. Results There were over 1,400 nights of tracked sleep across 39 participants. Objective sleep measurements showed increased time in bed (+10 minutes, p=.001) and total sleep time (+14 minutes, p=.002), as well as increased REM, both in duration (+6 minutes, p=.004) and proportion of the night (p=.023). Improvements also were observed in two objective sleep quality measures: SleepScore (p=.002) and MindScore (p=002). Self-report measures revealed that the hybrid mattress felt cooler (p<.001) and more comfortable (p<.001). Improvements also were found for a variety of perceived sleep outcomes, including time to fall asleep, waking less often, spending less time awake, longer sleep duration, better sleep quality, and feeling more rested in the morning (ps<.05). Conclusion Objectively-measured sleep and self-reported sleep improved when using the hybrid mattress compared to healthy adults’ original mattresses. Furthermore, qualitative and quantitative self-report results suggested that the intervention was perceived as comfortable and felt cool. These perceptions likely are what led to more time in bed, which in turn led to the key sleep improvements. Support (if any) Mattress Firm INC