Temperature study revealed at SLEEP 2022
demonstrates ability to unobtrusively measure body temperature
during sleep.
Daytime alertness study shows potential of the
360 smart bed to predict alertness trends in large populations
under real-world conditions.
Sleep Number Corporation (Nasdaq: SNBR), the sleep
health, science, and research leader, today announces new data from
its 360 smart bed at SLEEP 2022, the 36th annual meeting of the
Associated Professional Sleep Societies, LLC from June 4-8 in
Charlotte, NC. Data presented showed results of a study to measure
skin temperature using sensors to be deployed in 360 smart beds,
and a study to measure daytime alertness using Sleep Number’s
proprietary SleepIQ® technology, which is embedded in every 360
smart bed.
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Sleep Number presented two posters of new
360 smart bed data at SLEEP 2022, the 36th annual meeting of the
Associated Professional Sleep Societies, LLC in Charlotte, NC.
Temperature meaningfully impacts sleep quality, and alertness is
an indicator of sleep’s impact on daytime performance. These
studies further demonstrate Sleep Number’s ability to provide
unparalleled quality sleep, as well as the 360 smart bed’s
potential research capabilities to accurately assess and monitor
sleep using non-invasive, longitudinal methodology. To date, Sleep
Number has leveraged and learned from over 15 billion hours of
sleep data gathered from over 1.8 billion real-world sleep
sessions.
Unobtrusive Sensing of Skin Temperature During Sleep Using a
Mattress Sensor
Body and ambient temperature significantly influence sleep
patterns, both in falling asleep and staying asleep. As the body
prepares for sleep, temperature increases in distal (hands and
feet) and proximal (abdomen) areas, while core body temperature
decreases. The ratio of distal to proximal temperature can be
highly predictive of sleep onset, which can offer insight into
one’s sleep quality. However, there are few devices that can
measure these temperatures unobtrusively. Sleep Number’s study
sought to unobtrusively estimate distal skin temperature during
sleep using a temperature sensor array on a bed.
Three participants’ skin temperatures were measured using five
equally spaced temperature sensors set laterally across the bed to
align with the torso. Sleep Number compared their distal skin
temperature data to that of a research-grade, FDA-approved smart
watch and then used the sleep data from the 360 smart bed to build
predictive models estimating distal skin temperature.
Results of the study showed that a temperature sensor system,
coupled with an optimized decision-tree model to predict distal
skin temperature for each minute, can predict a mean distal sleep
temperature for each sleep session with reasonable accuracy. This
study also showed the 360 smart bed platform with the sensor array
enabled unobtrusive, real-world collection of distal skin
temperatures during sleep and may be useful for future studies
measuring overnight temperature.
“The research we’re presenting at SLEEP 2022 demonstrates our
commitment to our mission, to improve lives by individualizing
sleep experiences,” said Annie Bloomquist, Chief Innovation
Officer, Sleep Number. “Today, our 360 smart beds measure daytime
alertness, which affects health and productivity. Soon, they will
feature a sensor array to detect temperature, which is a challenge
for many adults. By advancing the 360 smart bed to monitor sleep
and health barriers, we are paving the way for sleepers to not only
get higher quality sleep, but potentially detect health issues and
improve holistic health from the comfort of their own home.”
Daytime Alertness Quantification and Modelling: Results from
a Large Observational Study
Poor quality sleep is associated with a broad range of health
risks such as chronic illnesses, impaired vigilance and cognitive
issues, including alertness. Understanding and predicting alertness
trends throughout the day can better inform daytime
performance.
Previously, the two-process model (TPM) of sleep regulation
combining sleep homeostasis and circadian rhythm has been used to
derive a daytime alertness curve. The TPM model has been used to
model the effects of sleep deprivation on memory, circadian
misalignment, temperature regulation and brain function; however,
the TPM-derived alertness curve comes largely from small-scale,
controlled studies. Sleep Number’s study showed that a similar,
three-parameter alertness measure, which included sleep
homeostasis, circadian rhythm and self-rated alertness responses
from 360 smart bed sleepers can scale to a large group of people
under real-world conditions.
Human sleep is regulated by two components: sleep homeostasis
and circadian rhythms. Sleep homeostasis, or pressure to sleep,
builds up in the body as time awake increases and decreases during
sleep. Circadian rhythms are natural, internal cycles of biological
and behavioral processes that rise and fall across the 24-hour day.
Circadian rhythms promote sleepiness before usual bedtime, help
initiate sleep and begin promoting wakefulness before usual wake-up
time in the morning.
Sleep Number 360 smart bed sleepers rated their subjective
alertness on a scale from one to 10 through the SleepIQ technology
app. The data was analyzed by age group (18-40, 41-65 and 66-90)
and compared to a three-parameter version of the TPM-derived
alertness curve. In total, more than 65,500 sleep sessions were
gathered over 95 days.
The study showed that:
- Overall, subjective alertness followed a similar trend to
previous studies: mean hourly alertness increased in the morning,
dipped slightly in the afternoon, increased during the evening and
decreased again during the night. Unlike previous studies, however,
this study saw a greater increase in alertness from the afternoon
to evening.
- Based upon the demographic makeup of the sleeper population,
Sleep Number was also able to analyze hourly trends in mean
alertness scores by age group. Younger sleepers had the most stable
alertness scores throughout the day, but lower levels of alertness
compared to older age groups. In contrast, middle-aged and older
sleepers had higher levels of alertness, but their score varied
more widely throughout the day compared to younger sleepers.
- These results show that TPM-derived alertness can effectively
predict daily alertness trends in a large group of people under
real-world conditions.
Quality sleep is associated with overall health and wellbeing,
which is why all Sleep Number 360 smart beds are informed by the
RU-SATED model, six scientific factors proven by Dr. Dan Buysse,
Professor of Psychiatry and Clinical and Translational Science,
University of Pittsburgh, to provide quality sleep: Regularity,
Satisfaction, Alertness, Timing, Duration and Efficiency.
“Last year, in listening to our sleepers’ feedback, we released
My Daytime Alertness, a feature that provides advanced, real-time
insights that pair each sleeper’s personal sleep data with
self-reported information and sleep science,” said Rajasi Mills, VP
of SleepIQ Health and Research, Sleep Number. “My Daytime
Alertness’ data-driven insights – along with our other features,
such as My Sleep Health and effortless adjustability - are helping
individuals improve their overall sleep health and wellbeing.”
Recently, Sleep Number also announced publication of another new
study in the journal Sensors, showing that SleepIQ technology –
found inside each Sleep Number 360 smart bed - demonstrated strong
correlations in measuring sleep data compared to traditional
laboratory PSG, the current gold standard of measuring sleep. To
view our studies and learn more about our innovations in sleep
health, science and research, visit:
www.sleepnumber.com/science.
About Sleep Number
Individuality is the foundation of Sleep Number. Our purpose
driven company is comprised of over 5,500 passionate team members
who are dedicated to our mission of improving lives by
individualizing sleep experiences. We have improved over 14 million
lives and are positively impacting society’s wellbeing through
higher quality sleep.
Our award-winning 360® smart beds are informed by science. They
learn from over one billion sleep sessions of highly-accurate, real
world sleep data – the culmination of over 15 billion hours’ worth
- to automatically adjust to each sleeper and provide effortless
comfort and proven quality sleep. Our 360 smart beds deliver
individualized sleep health reports and insights, including a daily
SleepIQ® score, and are helping to advance meaningful sleep health
solutions by applying sleep science and research.
For life-changing sleep, visit SleepNumber.com or one of our 650
Sleep Number® stores. More information is available on our newsroom
and investor relations sites.
Forward-looking Statements
Statements used in this news release relating to future plans,
events or performance such as the 360 smart bed’s potential
research capabilities are forward-looking statements subject to
certain risks and uncertainties. Additional information concerning
these and other risks and uncertainties is contained in the
company’s filings with the Securities and Exchange Commission
(SEC), including the Annual Report on Form 10-K, and other periodic
reports filed with the SEC. The company has no obligation to
publicly update or revise any of the forward-looking statements in
this news release.
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version on businesswire.com: https://www.businesswire.com/news/home/20220608005434/en/
Julie Elepano Sleep Number Public Relations
Julie.Elepano@sleepnumber.com
Nichole Teixeira Sleep Number Public Relations
Nichole.Teixeira@sleepnumber.com
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