Effects of chronotype and environmental factors upon sleep and mental health in Japanese students aged 18–40 yrs

Takeuchi, Hitomi; Yamazaki, Yumiko; Oki, Kotaro; Wada, Kai; Noji, Teruki; Kawada, Takahiro; Nakade, Miyo; Krejčí, Milada; Harada, Tetsuo

doi:10.1080/09291016.2015.1048952

Cited by 9 publications

(11 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Study dates ranged from 1973 to 2020, with 89% published after 2010. Studies were mainly conducted in Europe (n = 13) (28,29,31,33,(36)(37)(38)(39)42,44,48,56,62) , followed by Asia (n = 11) (30,34,40,41,50,51,53,(58)(59)(60)(61) , North America (n = 7) (22,27,35,43,46,47,57) and South America (n = 6) (32,52,54,55,62,63) . Most were cross-sectional (n = 31) (22,(27)(28)(29)(30)32,34,36,(38)(39)(40)(41)(42)(43)…”

Section: Demographicsmentioning

confidence: 99%

“…Most were cross-sectional (n = 31) (22,(27)(28)(29)(30)32,34,36,(38)(39)(40)(41)(42)(43)(44)46,47,(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63) , with two randomised trials (33,35) , two prospective studies (37,48) and a single pre/post study (31) . A majority of the studies included tertiary students (n = 17) (29,30,33,34,38,40,42,44,50,(52)(53)(54)(55)58,59,…”

Section: Demographicsmentioning

confidence: 99%

See 1 more Smart Citation

A scoping review of chronotype and temporal patterns of eating of adults: tools used, findings, and future directions

et al. 2021

View full text Add to dashboard Cite

Circadian rhythms, metabolic processes, and dietary intake are inextricably linked. Timing of food intake is a modifiable temporal cue for the circadian system and may be influenced by numerous factors, including individual chronotype—an indicator of an individual’s circadian rhythm in relation to the light-dark cycle. This scoping review examines temporal patterns of eating across chronotypes and assesses tools that have been used to collect data on temporal patterns of eating and chronotype. A systematic search identified thirty-six studies in which aspects of temporal patterns of eating including meal timings; meal skipping; energy distribution across the day; meal frequency; time interval between meals, or meals and wake/sleep times; midpoint of food/energy intake; meal regularity; and duration of eating window were presented in relation to chronotype. Findings indicate that compared to morning chronotypes, evening chronotypes tend to skip meals more frequently, have later mealtimes, and distribute greater energy intake towards later times of the day. More studies should explore the difference in meal regularity and duration of eating window amongst chronotypes. Currently, tools used in collecting data on chronotype and temporal patterns of eating are varied, limiting the direct comparison of findings between studies. Development of a standardised assessment tool will allow future studies to confidently compare findings to inform the development and assessment of guidelines that provide recommendations on temporal patterns of eating for optimal health.

show abstract

Section: Demographicsmentioning

confidence: 99%

Section: Demographicsmentioning

confidence: 99%

A scoping review of chronotype and temporal patterns of eating of adults: tools used, findings, and future directions

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In cross-sectional studies with children, as well as with adults, bedtime mobile phone use (in the broad definition, above) was associated with later bedtimes [16,22,31,82,85,88,93,223,263], longer sleep onset latency [53,79,112,223,293], shorter sleep duration [14,15,22,36,71,82,86,148,161,202,210], insomnia or sleep problems [5,14,79,85,97,144,199,202,205,235,269,293], reduced sleep quality or sleep efficiency [5,32,53,71,79,82,83,167,202,205], and reduced daytime functioning or tiredness [79,86,93,112,121,202,223,242,248,277,293]. In one study, keeping the phone close, rather than placing the phone at a distance from the bed, was associated with less sleep problems [235].…”

Section: Resultsmentioning

confidence: 99%

Mobile Phone Use and Mental Health. A Review of the Research That Takes a Psychological Perspective on Exposure

Thomée

2018

IJERPH

199

147

View full text Add to dashboard Cite

The purpose of this study was to carry out a review of observational studies that consider links between mobile phone use and mental health from a psychological or behavioral perspective. Systematic literature searches in PubMed and PsycINFO for articles published until 2017 were done. Exclusion criteria included: papers that considered radiofrequency fields, attention, safety, relational consequences, sexual behavior, cyberbullying, and reviews, qualitative, and case or experimental studies. A total of 4738 papers were screened by title and abstract, 404 were retrieved in full text, and 290 were included. Only 5% had any longitudinal design. Self-reporting was the dominating method of measurement. One third of the studies included children or youth. A majority of adult populations consisted of university students and/or self-selected participants. The main research results included associations between frequent mobile phone use and mental health outcomes, such as depressive symptoms and sleep problems. Mobile phone use at bedtime was associated with, e.g., shorter sleep duration and lower sleep quality. “Problematic use” (dependency) was associated with several negative outcomes. In conclusion, associations between mobile phone use and adverse mental health outcomes are found in studies that take a psychological or behavioral perspective on the exposure. However, more studies of high quality are needed in order to draw valid conclusions about the mechanisms and causal directions of associations.

show abstract

“…The questionnaire (Harada et al, 1998;Takeuchi et al, 2014Takeuchi et al, , 2015 before the intervention was administered and parents of 820 infants (Table 1) (711 ones attending one of 10 nursery schools and 109 ones attending a Kindergarten affiliated to Faculty of Education, Kochi University) answered the questionnaire instead. The questionnaire included questions on sleep habits, mental conditions (anger, irritation, out-of-control of emotion, depression), the Diurnal Type Scale (DTS) (Torsvall & Ǻkerstedt, 1980), meal habits, and light environments (Harada et al, 1998).…”

Section: Participants and Instrumentsmentioning

confidence: 99%

Effects of Reading a Picture Leaflet on Rhythm for Enhancement of Morning-Typed Life in Japanese Infants

Kawamata¹,

Kawasumi²,

Tsuji³

et al. 2017

PSYCH

Self Cite

View full text Add to dashboard Cite

In this study, a teaching material as a picture leaflet for infant was made, and the educational effectiveness of the leaflet was examined on the infants who attend one of ten nursery schools or a Kindergarten affiliated to Faculty of Education, Kochi University. The title of the picture leaflet is "A picture book on diurnal rhythm! Let's take cow milk breakfast and become a morning-typed person!" (Seikatsu-rizumunoehon, gyunyudehayanehayaoki: in Japanese). An intervention study was performed using an integrated questionnaire. The questionnaire before the intervention was administered and parents of 820 infants (711 ones attending one of the 10 nursery schools and 109 ones attending the Kindergarten) answered the questionnaire instead. All parents were asked to read the picture leaflet to their children every day during three weeks intervention period of June, 2016. Ratio of infants who had the reading of the leaflet more than 1 time for the 3 weeks was 94.5% and the average days when the reading of it was performed was 10.8 days. More than half of parents (52.4%) performed the reading it more than 10 days. Eleven percent (18 parents) of parents performed the reading every day of 21 intervention-days. In the first week of intervention, about 60% (97 infants) of the parents performed the reading in more than 4 days. Infants who had the reading it from their parents everyday got up in earlier time significantly than those who did it not in every day (U-test, z = −4.33, p < 0.01). Infants who had the reading of it every day went to bed in earlier time than the other ones who did it not in every day (U-test, z = −7.731, p < 0.001), and they slept more hours than the other ones (U-test, z = −2.30, p < 0.001). In conclusion, the reading of a picture leaflet which recommends a morning-typed life seems to be effective for How to cite this paper: Kawamata, M., Kawasumi, R., Tsuji, F., Taniwaki, N., Kawada, T., Noji, T., Krejci, M., Nakade, M., Takeuchi 1622 Psychology infants to promote the morning-typed life and quality of life (QOL) even though the intervention period is short as three weeks.

show abstract

Effects of chronotype and environmental factors upon sleep and mental health in Japanese students aged 18–40 yrs

Cited by 9 publications

References 34 publications

A scoping review of chronotype and temporal patterns of eating of adults: tools used, findings, and future directions

A scoping review of chronotype and temporal patterns of eating of adults: tools used, findings, and future directions

Mobile Phone Use and Mental Health. A Review of the Research That Takes a Psychological Perspective on Exposure

Effects of Reading a Picture Leaflet on Rhythm for Enhancement of Morning-Typed Life in Japanese Infants

Contact Info

Product

Resources

About