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PubMed Publications| Keyword search (4,163 papers available) |  |
"de Haan S" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | Habitual napping in older adults is accompanied by altered heat-loss rhythms across the circadian cycle and reduced coupling between pre-sleep thermoregulatory dynamics and sleep initiation | Dourte M; Hammad G; de Haan S; Deantoni M; Reyt M; Baillet M; Lesoinne A; Muto V; Collette F; Vandewalle G; Peigneux P; Cajochen C; Schmidt C; | 41797810 PSYCHOLOGY |
| Title: | Habitual napping in older adults is accompanied by altered heat-loss rhythms across the circadian cycle and reduced coupling between pre-sleep thermoregulatory dynamics and sleep initiation | ||||
| Authors: | Dourte M, Hammad G, de Haan S, Deantoni M, Reyt M, Baillet M, Lesoinne A, Muto V, Collette F, Vandewalle G, Peigneux P, Cajochen C, Schmidt C | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/41797810/ | ||||
| DOI: | 10.1080/23328940.2026.2623852 | ||||
| Publication: | Temperature (Austin, Tex.) | ||||
| Keywords: | Temperature; aging; circadian rhythms; distal proximal temperature gradient (DPG); napping; sleep onset latency; | ||||
| PMID: | 41797810 | Category: | Date Added: | 2026-03-09 | |
| Dept Affiliation: |
PSYCHOLOGY
1 GIGA-CRC Human Imaging Unit, Sleep and Chronobiology Laboratory, University of Liège, Liège, Belgium. 2 Psychology and Neuroscience of Cognition Research Unit, Faculty of Psychology and Educational Sciences, University of Liège, Liège, Belgium. 3 UR2NF, Neuropsychology and Functional Neuroimaging Research Unit, Center for Research in Cognition and Neurosciences, ULB Neurosciences Institute, Universite Libre de Bruxelles, Brussels, Belgium. 4 Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Concordia University, Montreal, Canada. 5 Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. 6 Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland. |
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Description: |
Thermoregulatory processes are closely linked to sleep initiation and maintenance throughout the circadian cycle, and may contribute to the increased tendency to nap in older adults. This cross-sectional study examined whether habitual napping in healthy older individuals is associated with altered skin temperature-derived heat-loss dynamics and their relationship with sleep onset. Thirty self-reported habitual nappers and 28 non-nappers (59-82 y) completed a 40-hour multiple-nap protocol under controlled laboratory conditions, with continuous polysomnography and distal-proximal skin temperature gradients (DPG) recordings. DPG was analyzed across scheduled wake episodes and at lights-off preceding each nap opportunity. Habitual nappers exhibited distinct changes in thermoregulatory dynamics compared to non-nappers. Overall, they had a lower DPG during scheduled wakefulness, particularly during the afternoon nap window (14:45-17:30). Their circadian organization of the DPG also differed markedly: they had a higher 24-hour DPG amplitude, a more pronounced 12-hour component, and an earlier DPG phase than the non-nappers. During nap opportunities, shorter sleep onset latency (SOL) was associated with a faster increase in DPG after lights-off in both groups. However, in habitual nappers, sleep onset occurred more rapidly despite a reduced dependence on pre-sleep DPG increase. Together, these findings indicate that habitual napping in older adults is accompanied by altered heat-loss rhythms across the circadian cycle and a reduced coupling between pre-sleep thermoregulatory dynamics and sleep initiation. Circadian-driven thermoregulatory changes may underlie the greater propensity to nap in older adults and differentiate habitual nappers from non-nappers. However, the causal direction of this relationship requires further investigation. |
