Sleep on a high heat capacity mattress increases conductive body heat loss and slow wave sleep

Kräuchi, Kurt; Fattori, Elisa; Giordano, Alessandra; Falbo, Maria; Iadarola, Antonella; Aglì, Francesca; Tribolo, Antonella; Mutani, Roberto; Cicolin, Alessandro

doi:10.1016/j.physbeh.2017.12.014

Cited by 36 publications

(36 citation statements)

References 22 publications

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“…However, warming during the night may improve the early awakenings that are typically displayed by anorectic patients. Accordingly, the use of warmth may be extended to the treatment of sleep disorders, in the line of other investigations proving the effects of heat in enhancing the quality and duration of sleep (Haghayegh, Khoshnevis, Smolensky, Diller, & Castriotta, 2019, Kräuchi et al, 2018.…”

Section: Discussionmentioning

confidence: 99%

Differential effects of heat in the phases of the light–dark cycle in the activity‐based anorexia model

Roura

Fraga

Gutiérrez

2020

Intl J Eating Disorders

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Background: This research builds on the studies on ambient temperature as a key influence in the recovery of rodents exposed to the activity-based anorexia (ABA) model. The ABA model is an experimental paradigm in which rodents under a restricted feeding schedule and with free access to an activity wheel show signs that parallel those of anorexia nervosa in humans. Objective: The present study focuses on the effects of applying heat during the different phases of the dark-light cycle in the activity levels, body weight, food intake, body temperature, and recovery rates of 30 male rats submitted to ABA. Method: After reaching a 20% weight loss criterion, animals were randomly assigned to three experimental conditions: (a) continuous warming, (b) warming exclusively during the light phase, or (c) warming exclusively during the dark phase. Results: Differential effects were found depending on the modalities of warming: in comparison with either light or dark warming, continuous warming significatively decreased activity, facilitated weight gain, and maintained body temperature. Transient effects of warming were found both in the groups warmed either during light or dark periods exclusively. Discussion: The results suggest that both light and dark warming did not promote recovery in animals exposed to ABA. Evidence about the beneficial effects of continuous warming are in line with previous research and reinforces adding external heat as a useful tool in the treatment of anorexia nervosa.

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Section: Discussionmentioning

confidence: 99%

Differential effects of heat in the phases of the light–dark cycle in the activity‐based anorexia model

Roura

Fraga

Gutiérrez

2020

Intl J Eating Disorders

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“…Many human studies have investigated that the effects of whole or localized body temperature manipulation on sleep regulation, by applying a warm bath 11 – 14 , a high heat capacity mattress 15 , air conditioning 16 , bed socks 17 , or a thermosuit 18 , 19 . Some studies have demonstrated that whole body warming by a warm bath 1–2 h before bedtime reduced SOL and increased slow-wave sleep 11 – 14 .…”

Section: Introductionmentioning

confidence: 99%

Periocular skin warming promotes body heat loss and sleep onset: a randomized placebo-controlled study

Ichiba

Suzuki

Aritake-Okada

et al. 2020

Sci Rep

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Periocular skin warming was reported to have favorable effects on subjective and objective sleep quality. We hypothesized that enhancing body heat loss by periocular skin warming would reduce sleep onset and improve sleep quality. Eighteen healthy volunteers were asked to maintain wakefulness with their eyes closed for 60 min after applying either a warming or sham eye mask, followed by a 60-min sleep period. Compared to the sham, periocular warming increased the distal skin temperature and distal–proximal skin temperature gradient only during the 30-min thermal manipulation period. In the subsequent sleep period, periocular warming facilitated sleep onset, increased stage 2 sleep and electroencephalographic delta activity during the first half of the sleep period relative to the sham. These results suggest that periocular skin warming may accelerate and deepen sleep by enhancing physiological heat loss via the distal skin, mimicking physiological conditions preceding habitual sleep.

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“…Sleep as a mental procedure is highly correlated to physiological signals. This fact is proven under experiments, which involve monitoring sleep stages using PSG [33][34][35][36][37]45,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. Therefore, we propose a novel clinical decision support system to predict the sleep quality based on trends of physiological signals in deep sleep stage.…”

Section: The Proposed Methodsmentioning

confidence: 99%

“…The speed and amount of this temperature reduction has a strong relationship with sleep quality [65]. Hence, subjects who sleep on warm mattresses lose more heat along with experiencing longer SWS as an index of quality of sleep [66].…”

Section: Body Movement and Temperature-mentioning

confidence: 99%

Sleep quality prediction in caregivers using physiological signals

Sadeghi

Banerjee

Hughes

et al. 2019

Computers in Biology and Medicine

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Most caregivers of people with dementia (CPWD) experience a high degree of stress due to the demands of providing care, especially when addressing unpredictable behavioral and psychological symptoms of dementia. Such challenging responsibilities make caregivers susceptible to poor sleep quality with detrimental effects on their overall health. Hence, monitoring caregivers' sleep quality can provide important CPWD stress assessment. Most current sleep studies are based on polysomnography, which is expensive and potentially disrupts the caregiving routine. To address these issues, we propose a clinical decision support system to predict sleep quality based on trends of physiological signals in the deep sleep stage. This system utilizes four raw physiological signals using a wearable device (E4 wristband): heart rate variability, electrodermal activity, body movement, and skin temperature. To evaluate the performance of the proposed method, analyses were conducted on a two-week period of sleep monitored on eight CPWD. The best performance is achieved using the random forest classifier with an accuracy of 75% for sleep quality, and 73% for restfulness, respectively. We found that the most important features to detect these measures are sleep efficiency (ratio of amount of time asleep to the amount of time in bed) and skin temperature. The results from our sleep analysis system demonstrate the capability of using wearable sensors to measure sleep quality and restfulness in CPWD.

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Sleep on a high heat capacity mattress increases conductive body heat loss and slow wave sleep

Cited by 36 publications

References 22 publications

Differential effects of heat in the phases of the light–dark cycle in the activity‐based anorexia model

Differential effects of heat in the phases of the light–dark cycle in the activity‐based anorexia model

Periocular skin warming promotes body heat loss and sleep onset: a randomized placebo-controlled study

Sleep quality prediction in caregivers using physiological signals

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