Results 81 to 90 of about 15,780 (275)

Prospective analysis of sleep characteristics, chronotype, and risk of breast cancer in the california teachers study

Cancer Causes and Control, 2023
Poor sleep quality and evening chronotype were associated with increased risk of breast cancer in a previous retrospective study in the California Teachers Study (CTS). The present analysis examines these sleep factors prospectively in the same cohort of
J. Von Behren, Debbie E. Goldberg, S. Hurley, Jessica Clague DeHart, Sophia S. Wang, Peggy Reynolds   +5 more
semanticscholar   +1 more source

The Ecology of Human Sleep (EcoSleep) Cohort Study: Protocol for a longitudinal repeated measurement burst design study to assess the relationship between sleep determinants and outcomes under real‐world conditions across time of year

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary The interplay of daily life factors, including mood, physical activity, or light exposure, influences sleep architecture and quality. Laboratory‐based studies often isolate these determinants to establish causality, thereby sacrificing ecological validity.
Anna M. Biller, Nayab Fatima, Chrysanth Hamberger, Laura Hainke, Verena Plankl, Amna Nadeem, Achim Kramer, Martin Hecht, Manuel Spitschan   +8 more
wiley   +1 more source

Late chronotype and associated health problems

Quality in Sport
Introduction: Chronotype reflects an individual's preference for activity and rest within a 24-hour period, governed by the internal circadian clock system located in the suprachiasmatic nuclei of the hypothalamus.
Justyna Jędrzejczyk, Aleksandra Korn, Olga Łopacińska, Katarzyna Stańczyk, Karolina Czarnecka, Emilia Wójcik, Anna Korczak, Oliwia Szewczyk, Ewa Olek, Katarzyna Burda, Tomasz Szaliński   +10 more
doaj   +1 more source

Chronotype delay and sleep disturbances shaped by the Antarctic polar night

Scientific Reports, 2023
Chronotype is a reliable biomarker for studying the influence of external zeitgebers on circadian entrainment. Assessment of chronotype variation in participants exposed to extreme photoperiods may be useful to investigate how changes in light–dark cycle
C. Tortello, A. Folgueira, J. M. Lopez, F. Didier Garnham, E. Sala Lozano, M. S. Rivero, G. Simonelli, D. E. Vigo, S. A. Plano   +8 more
doaj   +1 more source

What Is the Relationship between Chronotype and Disordered Eating in Adolescents? The EHDLA Study

Nutrients
Background: Evidence assessing the relationship between chronotype and disordered eating in adolescents is scarce. The current study tried to evaluate the association between chronotype and disordered eating in a sample of Spanish adolescents.
J. F. López-Gil, Jorge Olivares-Arancibía, Rodrigo Yáñez-Sepúlveda, M. Martínez-López   +3 more
semanticscholar   +1 more source

Reproductive fitness is associated with female chronotype in a songbird

bioRxiv, 2023
Research on biological rhythms has revealed widespread variation in diel timing within populations. Repeatable individual chronotypes have been linked to performance in humans but, in free-living species, benefits of chronotype are poorly understood.
Robyn Womack, P. Capilla-Lasheras, Ciara L. O. McGlade, Davide M. Dominoni, B. Helm   +4 more
semanticscholar   +1 more source

Chronotype and Sleep Quality in Obesity: How Do They Change After Menopause? [PDF]

, 2022
Ludovica Verde, Luigi Barrea, Claudia Vetrani, Evelyn Frías-Toral, Sebastián Chapela, Ranil Jayawardena, Giulia de Alteriis, Annamaria Docimo, Silvia Savastano, Annamaria Colao, Giovanna Muscogiuri   +10 more
openalex   +1 more source

Comparison of chronotype and learning motivation in medical university students

BMC Medical Education
People differ in their preferred time for intellectual activities. Morningness-eveningness preferences describe the preferred time for performing daily activities and are determined by chronotype. Chronotype reflects circadian preference in humans and is
M. Sato, M. Roszak, Takahiro Hashimoto, Barbara Kolodziejczak, D. Gubin, Neil Boudville, E. Kawka, A. Bręborowicz, J. Witowski, D. Kanikowska   +9 more
semanticscholar   +1 more source

Multidimensional frailty and sleep quality in late adulthood: A UK biobank examination

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Frailty and sleep disturbances are two major concerns in late adulthood, that not only profoundly threaten health and wellbeing at the individual level but place enormous demands on our healthcare systems. Given that both constructs represent dynamic states that are preventable and reversible, understanding the potential pathways to and effects
Sarah P. Coundouris, Julie D. Henry, Lena K. L. Oestreich   +2 more
wiley   +1 more source

Associations between chronotype and physical activity and well-being in adults

Chronobiology International
Circadian rhythms influence a preference for people’s time of activity and sleep time during the day and the hours of best performance. The aim of the study was to assess the associations between chronotype, physical activity, and well-being in adults ...
Sara Polańska, Aleksandra Karykowska, Ł. Pawelec   +2 more
semanticscholar   +1 more source