China
Africa
Explore chapters and articles related to this topic
Non-Pharmacological Treatments for Mood Disorders
Published in Dr. Ather Muneer, Mood Disorders, 2018
The therapeutic response to LT critically depends on time of delivery relative to personal circadian phase, which is determined by the onset of melatonin secretion. A study found bright light administered 7.5–9.5 h after evening melatonin onset produced twice the remission rate (80 versus 40%) of light presented 9.5–11 h after melatonin onset and proposed to administer bright light about 8.5 h after melatonin onset for obtaining maximum therapeutic effect. However, it is not always practicable to directly measure melatonin onset in daily clinical practice. A practical solution is found in the Morningness–Eveningness Questionnaire score, which strongly correlates with melatonin onset. Using this questionnaire, optimal administration time of LT can be determined without direct measurement of melatonin.40
Can we put the first night effect to bed? An analysis based on a large sample of healthy adults
Published in Chronobiology International, 2022
Madeline Sprajcer, Charlotte Gupta, Gregory Roach, Charli Sargent
Prior to the study, participants completed the Epworth Sleepiness Scale (Johns, 1991), and the Morningness-Eveningness Questionnaire (Horne and Ostberg 1975) to assess daytime sleepiness and chronotype, respectively. The average daytime sleepiness score was 12.5 ± 3.2 on the Epworth Sleepiness Scale. Of the sample, 10.5% were categorised as ‘moderately morning’; 70.2% were categorised as ‘neither morning or evening,’ 18.5% were categorised as ‘moderately evening,’ and less than 1% were categorised as ‘definitely evening’ based on responses to the Morningness Eveningness Questionnaire. Participants were also asked to report their typical sleep timing. On average, participants went to bed at 23:19 ± 00:08 h, woke at 08:15 ± 00:25 h, and obtained 7.9 ± 1.0 h of sleep. Participants were also asked to maintain a regular sleep schedule prior to study commencement (bedtimes between 10:00pm – 12:00am; wake times between 07:00am – 09:00am).
Sleep behavior and training load in adolescent elite basketball players during COVID-19 pandemic development
Published in Chronobiology International, 2022
Lisa Kullik, Michael Kellmann, Christian Puta, Sarah Jakowski
Additionally, the German version of the Morningness-Eveningness-Questionnaire (DMEQ; Griefahn et al. 2001) was used to evaluate the participants’ chronotype. A person can be categorized in morning, evening, or intermediate type. The higher the score, the more a person tends to be a morning type. Griefahn et al. (2001) confirmed that the German version represents a valid instrument for identifying the individual chronotype with a correlation of r = −.90 in comparison to the validated questionnaire for the Subjective Circadian Phase (SCP; Moog 1981). The German version differentiates between the five groups of explicit evening type, moderate evening type, intermediate type, moderate morning type, and explicit morning type. The chronotype was assessed once only, since it represents a genetically determined predisposition (Walsh et al. 2021). Thus, it is assumed that short-term shifts of chronotype are unlikely within a few months, like in the present study.
Sleeping through a Lockdown: How Adolescents and Young Adults Struggle with Lifestyle and Sleep Habits Upheaval during a Pandemic
Published in Behavioral Sleep Medicine, 2022
Jérémie Potvin, Laura Ramos Socarras, Geneviève Forest
The survey was administered in French and was distributed through social media from June 3rd to July 3rd, 2020. Participants first completed the reduced-Morningness-Eveningness Questionnaire (rMEQ; Adan & Almirall, 1991). The rMEQ is a 5 question version of the original MEQ and the scores vary from 4 (extreme eveningness) to 25 (extreme morningness). Then, questions were asked on their sleep and lifestyle habits retrospectively for the time prior to the COVID-19 pandemic and then, for the time during the pandemic. Answers had to be given according to what best described the majority of nights and days during the past month. Sleep was assessed with questions derived from the Pittsburgh Sleep Quality Index (Buysse et al., 1989). To better reflect the sleep patterns of adolescents and young adults, sleep questions were asked about what they considered their weekday and weekend habits. These questions did not mention specific days. Thus, it was left up to the interpretation of the participant to answer according to what they considered their weekday vs. weekend sleep habits. Furthermore, only questions related to sleep habits, sleep quality and specific sleep difficulties were integrated in the survey in order to minimize the length of the entire survey. Lifestyle habits were measured using author constructed questions on caffeine, cannabis and alcohol consumption, electronic usage, employment, and physical activity. The online survey also consisted of other questionnaires that are not analyzed in the current study. It took about 20 minutes to complete all the questionnaires.