Results 31 to 40 of about 28,011 (288)

Exploring the Impact of Natural Light Exposure on Sleep of Healthy Older Adults: A Field Study

Journal of Daylighting, 2018
Studies among people with dementia demonstrated that the sleep quality and rhythm improves significantly when people are exposed to ambient bright light.
Mariëlle P. J. Aarts, Janny C. Stapel, Toine A. M. C. Schoutens, Joost van Hoof   +3 more
doaj   +1 more source

Variations in sleep duration and timing: weekday and seasonal variations in sleep are common in an analysis of 73 million nights from an objective sleep tracker. [PDF]

Sleep
International audienceAbstract Study Objectives Irregular sleep is a major risk factor for adverse health. In a global sample with technology-enabled long-term objective sleep data spanning 3.5 years, we investigated variability in sleep duration and ...
Scott H, Lechat B, Sansom K, Pinilla L, Manners J, Phillips AJK, Nguyen DP, Bailly S, Pepin JL, Escourrou P, Naik G, Catcheside P, Eckert DJ.   +12 more
europepmc   +2 more sources

Seasonal Changes in Sleep Duration in African American and African College Students Living In Washington, D.C.

The Scientific World Journal, 2007
Duration of nocturnal melatonin secretion, a marker of “biological night” that relates to sleep duration, is longer in winter than in summer in patients with seasonal affective disorder (SAD), but not in healthy controls.
Janna Volkov, Kelly J. Rohan, Samina M. Yousufi, Minh-Chau Nguyen, Michael A. Jackson, Courtney M. Thrower, John W. Stiller, Teodor T. Postolache   +7 more
doaj   +1 more source

Why We Sleep: A Hypothesis for an Ultimate or Evolutionary Origin for Sleep and Other Physiological Rhythms

Journal of Circadian Rhythms, 2020
Although sleep is ubiquitous, its evolutionary purpose remains elusive. Though every species of animal, as well as many plants sleep, theories of its origin are purely physiological, e.g. to conserve energy, make repairs or to consolidate learning.
Andrew S. Freiberg
doaj   +1 more source

Effects of a randomized controlled hiking intervention on daily activities, sleep, and stress among adults during the COVID-19 pandemic

BMC Public Health, 2023
Background Physical activity promotes health, and physical activity done outdoors in nature may be particularly beneficial. We conducted two randomized studies to examine the implementation of a winter hiking intervention and whether this intervention ...
Stephanie Anzman-Frasca, Julia Drozdowsky, Callista Zayatz, Katherine Holmbeck   +3 more
doaj   +1 more source

Effects of Near-Infrared Light on Well-Being and Health in Human Subjects with Mild Sleep-Related Complaints: A Double-Blind, Randomized, Placebo-Controlled Study

Biology, 2022
Modern urban human activities are largely restricted to the indoors, deprived of direct sunlight containing visible and near-infrared (NIR) wavelengths at high irradiance levels.
Marina Cecilia Giménez, Michelle Luxwolda, Eila G. Van Stipriaan, Pauline P. Bollen, Rieks L. Hoekman, Marthe A. Koopmans, Praveen R. Arany, Michael R. Krames, Anne C. Berends, Roelof A. Hut, Marijke C. M. Gordijn   +10 more
doaj   +1 more source

Modeling circadian and sleep-homeostatic effects on short-term interval timing [PDF]

, 2015
Short-term interval timing i.e., perception and action relating to durations in the seconds range, has been suggested to display time-of-day as well as wake dependent fluctuations due to circadian and sleep-homeostatic changes to the rate at which an ...
Jakub eSpäti, Meyer, Andrea Hans, Moriguchi, Yoshiya, Aritake, Sayaka, Hida, Akiko, Sayaka Aritake, Mishima, Kazuo, Yoshiya eMoriguchi, Späti, Jakub, Kitamura, Shingo, Yoshiya Moriguchi, Shigekazu eHiguchi, Jakub Späti, Kazuo Mishima, Shingo eKitamura, Akiko eHida, Kazuo eMishima, Andrea H. Meyer, Sayaka eAritake, Higuchi, Shigekazu, Shingo Kitamura, Shigekazu Higuchi, Andrea Hans Meyer, Akiko Hida   +23 more
core   +1 more source

Melanopsin-Mediated Acute Light Responses Measured in Winter and in Summer: Seasonal Variations in Adults with and without Cataracts

Frontiers in Neurology, 2017
Seasonal adaptation is a ubiquitous behavior seen in many species on both global hemispheres and is conveyed by changing photoperiods. In humans this seasonal adaptation is less apparent, in part because changes in daylength are masked by the use of ...
Mirjam Münch, Myriam Ladaique, Ségolène Roemer, Kattayoon Hashemi, Aki Kawasaki   +4 more
doaj   +1 more source

Effect of Seasonal Ambient Temperature on Sleep and Thermal Comfort in Older People Living in Public Elderly Facilities

Buildings, 2021
This study aimed to investigate the thermal environment and thermal comfort of elderly occupants living in elder care facilities and to compare the quality of sleep, in all four seasons, of these elderly occupants. A total of 16 healthy participants with
Kazuyo Tsuzuki, Tomonori Sakoi, Yoko Sakata   +2 more
doaj   +1 more source

A review of Japanese-style bathing: its demerits and merits

Journal of Physiological Anthropology, 2022
Japanese-style bathing (JSB), which involves soaking in hot water up to the shoulders in deep bathtubs for a long time in the evening to night, is unique. Many experimental and epidemiological studies and surveys have shown that JSB improve sleep quality,
Yutaka Tochihara
doaj   +1 more source