Evidence map›Paper›PMID 41841798›Full record

ArticleSleep2026

Age-related patterns in distal skin temperature during naps.

Severine Soltani, Wendy Hartogensis, Patrick Kasl, Subhasis Dasgupta, Stephan Dilchert, Frederick M Hecht, Benjamin L Smarr, Ashley E Mason

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sleep, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
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0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Severine SoltaniBioinformatics and Systems Biology Graduate Program, University of California San Diego, La Jolla, CA, United States.ORCID 0000-0003-0894-9993
Wendy HartogensisOsher Center for Integrative Health, University of California San Francisco, San Francisco, CA, United States.
Patrick KaslShu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA, United States.
Subhasis DasguptaSan Diego Supercomputer Center, University of California San Diego, La Jolla, CA, United States.
Stephan DilchertZicklin School of Business, Baruch College, The City University of New York, New York, NY, United States.ORCID 0000-0001-6733-576X
Frederick M HechtOsher Center for Integrative Health, University of California San Francisco, San Francisco, CA, United States.
Benjamin L SmarrShu Chien-Gene Lay Department of Bioengineering, University of California San Diego, La Jolla, CA, United States.
Ashley E MasonOsher Center for Integrative Health, University of California San Francisco, San Francisco, CA, United States.

Funding

Mentoring and Research in Integrative MedicineK24AT007827 · NCCIH · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HECHT, FREDERICK M · 2013 to 2022
$1.8M
Department of Defense MTEC-20-12-COVID19-D.-023MTEC solicitation MTEC-20-12-Diagnostics-023NCCIH NIH HHS K24AT007827NIGMS NIH HHS 5T32GM139790-02Oura Health Oy 134650#StartSmall Foundation 7029991USAMRDC
6 · The paper itself

Abstract

STUDY

objectivesNaps are common worldwide; despite their prevalence, physiological changes during naps are less well-characterized than during nighttime sleep. We aimed to characterize napping patterns and their associated physiological changes across age groups.

methodsWe used longitudinal wearable device data from 20 027 individuals from the TemPredict Study to assess (1) napping frequency and timing and (2) distal skin temperature changes around naps.

resultsOlder age groups napped more frequently and consistently throughout the week. Individuals aged 30-49 years showed the greatest increase in nap frequency from weekdays to weekends, whereas younger (18-19 years) and older (≥60 years) age groups showed the smallest increases. Sleep timing and distal skin temperature rhythms appeared tightly coupled, even during the daytime. Both sleep timing and distal skin temperature rhythms appeared phase-delayed among younger age groups relative to older age groups. Distal skin temperature was higher during naps on weekends relative to weekdays. Older individuals (≥65 years) had lower distal skin temperatures during naps relative to younger individuals (≤30 years) (weekends: p < .0001; δ = -0.20; weekdays: p < .0001; δ = -0.19). Longer naps were generally associated with greater distal skin temperature before napping, especially among younger individuals (≤30 years).

conclusionWe observed age-related differences in napping patterns and distal skin temperature around and during naps. Future research should examine whether such distal skin temperature changes around naps relate to sleep pressure and age-related disease risk.

Indexed as

AgingSkin TemperatureSleepAdolescentAdultAgedAge FactorsCircadian RhythmFemaleHumansLongitudinal StudiesMaleMiddle AgedYoung Adultagingbiomarkersdaytime sleepnapssiestasleepinesssleep pressurestatisticsthermoregulation

Identifiers

PMID41841798
PMCPMC13267894

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.