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Littérature scientifique sur le sujet « Rest-activity circadian rhythms: daily activity level »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Rest-activity circadian rhythms: daily activity level"

Zhou, Ke, Marios Constantinides, Daniele Quercia, and Sanja Šćepanović. "How Circadian Rhythms Extracted from Social Media Relate to Physical Activity and Sleep." Proceedings of the International AAAI Conference on Web and Social Media 17 (June 2, 2023): 948–59. http://dx.doi.org/10.1609/icwsm.v17i1.22202.

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Circadian rhythm has been linked to both physical and mental health at an individual level in prior research. Such a link at population level has been long hypothesized but has never been tested, largely because of lack of data. To partly fix this literature gap, we need: a dataset on population-level circadian rhythms, a dataset on population-level health conditions, and strong associations between these two partly independent sets. Recent work has shown that affect on social media data relates to population-level circadian rhythms. Building upon that work, we extracted five circadian rhythm

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Aubourg, Timothée, Jacques Demongeot, and Nicolas Vuillerme. "Gaining Insights Into the Estimation of the Circadian Rhythms of Social Activity in Older Adults From Their Telephone Call Activity With Statistical Learning: Observational Study." Journal of Medical Internet Research 23, no. 1 (2021): e22339. http://dx.doi.org/10.2196/22339.

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Background Understanding the social mechanisms of the circadian rhythms of activity represents a major issue in better managing the mechanisms of age-related diseases occurring over time in the elderly population. The automated analysis of call detail records (CDRs) provided by modern phone technologies can help meet such an objective. At this stage, however, whether and how the circadian rhythms of telephone call activity can be automatically and properly modeled in the elderly population remains to be established. Objective Our goal for this study is to address whether and how the circadian

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Bebas, Piotr, Bronislaw Cymborowski, and Jadwiga M. Giebultowicz. "Circadian rhythm of acidification in insect vas deferens regulated by rhythmic expression of vacuolar H+-ATPase." Journal of Experimental Biology 205, no. 1 (2002): 37–44. http://dx.doi.org/10.1242/jeb.205.1.37.

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SUMMARY Recent studies have demonstrated that the peripheral tissues of vertebrates and invertebrates contain circadian clocks; however, little is known about their functions and the rhythmic outputs that they generate. To understand clock-controlled rhythms at the cellular level, we investigated a circadian clock located in the reproductive system of a male moth (the cotton leaf worm Spodoptera littoralis) that is essential for the production of fertile spermatozoa. Previous work has demonstrated that spermatozoa are released from the testes in a daily rhythm and are periodically stored in th

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Alós, Josep, Martina Martorell-Barceló, and Andrea Campos-Candela. "Repeatability of circadian behavioural variation revealed in free-ranging marine fish." Royal Society Open Science 4, no. 2 (2017): 160791. http://dx.doi.org/10.1098/rsos.160791.

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Repeatable between-individual differences in the behavioural manifestation of underlying circadian rhythms determine chronotypes in humans and terrestrial animals. Here, we have repeatedly measured three circadian behaviours, awakening time, rest onset and rest duration, in the free-ranging pearly razorfish, Xyrithchys novacula , facilitated by acoustic tracking technology and hidden Markov models. In addition, daily travelled distance, a standard measure of daily activity as fish personality trait, was repeatedly assessed using a State-Space Model. We have decomposed the variance of these fou

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Atanaskovic, Marko, Marko Nemet, Borislav Tapavicki, Milica Vasilic, Ivona Stanic-Hadzalic, and Enis Garipi. "Effects of circadian rhythm and daily physical activity on short-term heart rate variability in young healthy adults: A pilot study." Medical review 75, no. 9-10 (2022): 295–99. http://dx.doi.org/10.2298/mpns2210295a.

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Introduction. Heart rate variability is the leading non-invasive method used for assessing the activity of the autonomic nervous system. Investigation of the changes in the autonomic nervous system activity under the influence of circadian rhythm and daily physical activity can be beneficial to exercise at the best time of the day and at regular time intervals. Furthermore, it can be used to determine the optimal level of total daily physical activity. This study aimed to demonstrate the effects of circadian rhythm and daily physical activity on the autonomic nervous system at rest through sho

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Li, Jia-Da, Katherine J. Burton, Chengkang Zhang, Shuang-Bao Hu, and Qun-Yong Zhou. "Vasopressin receptor V1a regulates circadian rhythms of locomotor activity and expression of clock-controlled genes in the suprachiasmatic nuclei." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 296, no. 3 (2009): R824—R830. http://dx.doi.org/10.1152/ajpregu.90463.2008.

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The suprachiasmatic nuclei (SCN) serve as the principal circadian pacemakers that coordinate daily cycles of behavior and physiology for mammals. A network of transcriptional and translational feedback loops underlies the operating molecular mechanism for circadian oscillation within the SCN neurons. It remains unclear how timing information is transmitted from SCN neurons to eventually evoke circadian rhythms. Intercellular communication between the SCN and its target neurons is critical for the generation of coherent circadian rhythms. At the molecular level, neuropeptides encoded by clock-c

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Tracy, Eunjin, Brian Chin, H. Matthew Lehrer, et al. "0282 Behavioral–social rhythms and metabolic syndrome prevalence in retired night shift and day workers." SLEEP 46, Supplement_1 (2023): A125. http://dx.doi.org/10.1093/sleep/zsad077.0282.

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Abstract Introduction Disrupted sleep and circadian rhythms, such as those occurring during night shift work, are established cardiovascular disease (CVD) risk factors like hypertension, obesity, and insulin resistance. However, we do not know whether the effects of shift work on CVD risk factors persist into retirement. Conversely, regularity in behavioral-social rhythms – the systematic patterning or timing of daily routines like work/housework, sleeping, eating and social interactions – may keep endogenous circadian rhythms synchronized to the 24-hour day and reduce CVD risk. This study exa

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Ragozin, Oleg N., Irina A. Pogonysheva, Elena Yu Shalamova, Denis A. Pogonyshev, Elina R. Ragozina, and Victoria V. Postnikova. "Variability of Helioclimate Factors and Applicability to the Emergency Service Population of the Northern Region." Bulletin of Nizhnevartovsk State University, no. 4 (December 7, 2022): 89–97. http://dx.doi.org/10.36906/2311-4444/22-4/09.

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The purpose of this study was to study the influence of the variability of weather and heliophysical factors on the appeal to the Ambulance service for different groups of nosologies in the population of the Russian North. Information about calls to the emergency medical service of Khanty-Mansiysk was obtained from the database of calls for the period from 2001 to 2021 by disease classes (ICD-10). To assess the dynamics of weather factors, data from the All-Russian Research Institute of Hydrometeorological Information and materials from the weather station of Khanty-Mansiysk were used. The dyn

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Tyutenova, Alima, Lyazzat Gumarova, Christian Cajochen, Manshuk Kamalova, and Yeskendyr Ashimov. "Influence of different light intensities during the day on the motor activity in adolescents." BIO Web of Conferences 100 (2024): 01018. http://dx.doi.org/10.1051/bioconf/202410001018.

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This study investigates the impact of varying light intensities throughout the day on motor activity levels in adolescent girls aged between 14-16, who are students at a boarding school. The study lasted for three weeks, with each week consisting of four days. During this period, participants experienced three different lighting conditions from 07:00 to 18:00. These conditions included: standard light intensity in real-life settings, wearing blue-blocking glasses, and spending at least 1.5 hours outdoors daily for natural light exposure. The aim was to understand how modern lighting sources ca

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Thèses sur le sujet "Rest-activity circadian rhythms: daily activity level"

CASTELLI, LUCIA. "DAILY ACTIVITY LEVELS AND SLEEP QUALITY IN BREAST CANCER." Doctoral thesis, Università degli Studi di Milano, 2022. http://hdl.handle.net/2434/884767.

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Rest-activity circadian rhythm (RAR) analysis is a valuable tool to evaluate daily physical activity levels and sleep quality in breast cancer (BC) women, including BC survivors, a population less considered in the scientific literature. Indeed, the role of physical activity is recognised even in tertiary cancer prevention due to its action either on physical or psychological human spheres. In managing the quality of life in BC women, sleep assessment and its relationship with physical activity also raise attention. Several studies reported that an increase in physical activity practice might

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Chapitres de livres sur le sujet "Rest-activity circadian rhythms: daily activity level"

Foster, Russell G., and Leon Kreitzman. "4. Shedding light on the clock." In Circadian Rhythms: A Very Short Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/actrade/9780198717683.003.0004.

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Most circadian clocks make use of a sun-based mechanism as the primary entraining signal to lock the internal day to the astronomical day. For nearly four billion years, dawn and dusk has been the main zeitgeber that allows entrainment. Circadian clocks are not exactly 24 hours. So to prevent daily patterns of activity and rest from freerunning over time, light can reset the clock. ‘Shedding light on the clock’ explains that the main circadian clock has been located in the suprachiasmatic nucleus in the hypothalamus. This also regulates the activity of the autonomic nervous system, but there a

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Xiao, Qian, and Katie Stone. "Epidemiology of Sleep and Circadian Health." In The Oxford Handbook of Sleep and Sleep Disorders, 2nd ed. Oxford University Press, 2025. https://doi.org/10.1093/oxfordhb/9780197602751.013.12.

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Abstract A growing body of basic, clinical, and epidemiological research has convincingly established sleep as one of the core biological and behavioral determinants of human health and a prime target for interventions for disease prevention and health promotion. In this chapter, the authors review epidemiological evidence concerning four important aspects of sleep and circadian research. They begin by discussing the epidemiology of sleep disorders, 24-hour rest–activity rhythms, and multidimensional sleep health, with specific emphasis on sleep across the life span and gender and sex differen

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Pritchett, David, Angus S. Fisk, Russell G. Foster, and Stuart N. Peirson. "Basic mechanisms of, and possible treatment targets for, sleep–wake disorders." In New Oxford Textbook of Psychiatry, edited by John R. Geddes, Nancy C. Andreasen, and Guy M. Goodwin. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198713005.003.0109.

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Circadian rhythms are endogenous 24-hour oscillations in physiology and behaviour that enable organisms to predict and adapt to the rhythmic changes of the day/night cycle. While the rhythm of activity and rest is perhaps the most familiar, changes in body temperature, heart rate, hormone production, and even cognitive function also occur. By contrast, the daily pattern of sleep and wake is not solely determined by the circadian system and is also regulated by a homeostatic process that increases with prolonged waking. Sleep and circadian rhythm disruption (SCRD) is commonly observed in psychi

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