Results 211 to 220 of about 160,046 (270)

Eveningness in Middle‐Aged and Older Adults: Associations With Sleep, Internalising Symptoms, and Alertness

open access: yesJournal of Sleep Research, Volume 35, Issue 1, February 2026.
ABSTRACT Evening chronotype, characterised by a preference for later circadian timing, can present challenges in societal activities oriented towards morning schedules. This study investigates the link between chronotype and sleep, alertness, and internalising symptoms in middle‐aged and older adults. The sample comprised 652 healthy adults (ages 35–98)
Xinran Niu   +3 more
wiley   +1 more source

Elevated Hair Cortisol Concentrations Are Associated With Poor Sleep Quality Evaluated Using the Pittsburgh Sleep Quality Index but Not With Actigraphy

open access: yesJournal of Sleep Research, Volume 35, Issue 1, February 2026.
ABSTRACT There is growing interest in studying how habitual sleep disturbance affects biological risk factors that may underscore adverse health outcomes. This study examined associations between hair cortisol concentrations and self‐reported sleep quality and objectively measured sleep metrics derived using actigraphy.
David S. Michaud, Mireille Guay
wiley   +1 more source

Polysomnographic (PSG) Characteristics of Sleep Behaviour in Parkinson's Disease: A Brief Report

open access: yesJournal of Sleep Research, Volume 35, Issue 1, February 2026.
ABSTRACT Polysomnography (PSG) is widely used for verifying sleep disruption in Parkinson's disease (PD). However, the determination of impacted PSG parameters specific to PD is complicated by the heterogeneity of study populations, control groups, as well as scoring systems.
Beatrix Feigl   +4 more
wiley   +1 more source

The Influence of 25‐ and 90‐Min Afternoon Nap Opportunities on Subsequent Nighttime Sleep in Student Athletes

open access: yesJournal of Sleep Research, Volume 35, Issue 1, February 2026.
ABSTRACT While daytime napping could support recovery in athletes, poorly timed or prolonged naps may interfere with nighttime sleep. Therefore, this study aimed to explore the effect of two different, well‐timed nap opportunity durations, 25 and 90 min, on subsequent objectively measured nighttime sleep in student athletes.
Omar Boukhris   +2 more
wiley   +1 more source

Arabidopsis thaliana iron superoxide dismutase FeSOD1 protects ARGONAUTE 1 in a copper-dependent manner. [PDF]

open access: yesJ Exp Bot
Tomassi AH   +10 more
europepmc   +1 more source

Acute Effects of Oral Cannabinoids on Sleep and High‐Density EEG in Insomnia: A Pilot Randomised Controlled Trial

open access: yesJournal of Sleep Research, Volume 35, Issue 1, February 2026.
ABSTRACT Cannabinoids, particularly Δ9‐tetrahydrocannabinol (THC) and cannabidiol (CBD), have gained popularity as alternative sleep aids; however, their effects on sleep architecture and next‐day function remain poorly understood. Here, in a pilot trial, we examined the effects of a single oral dose containing 10 mg THC and 200 mg CBD (THC/CBD) on ...
Anastasia Suraev   +17 more
wiley   +1 more source

Home - About - Disclaimer - Privacy