Seasonal change of total sleep time and open air temperature

Kawada, Tomoyuki

doi:10.1007/s00484-010-0314-4

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…Contrary to findings pertaining to shorter sleep duration during the summer, obtained with adults (Kawada, 2010;Okamoto-Mizuno & Tsuzuki, 2010), in the present sample of infants, morning wake time was similar across the seasons and the overall sleep duration in the summer was not significantly shorter compared with the winter. One possible explanation is that due to food intake needs, sleep duration and fragmentation is still partially regulated by eating needs and habits (Herman, 2005).…”

Section: Discussioncontrasting

confidence: 86%

Seasonal Effect on Infants' Sleep Regulation: A Preliminary Study in a Mediterranean Climate

Cohen

Atun-Einy

Scher

2012

Chronobiology International

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Infants' sleep-wake rhythms are influenced by multiple factors, including developmental and contextual aspects, as well as circadian cycles. Empirical studies that address the seasonal impact on infants' sleep are scarce. The present study examined aspects of sleep schedule and quality, comparing summer and winter months in a Mediterranean climate. This report is based on a convenience sample of 34 healthy 7-mo-olds, an age in which sleep is well consolidated and regulated compared with the first few months of life. Sleep was measured with actigraphy, in the home context. It was found that compared with winter, in the summer months, sleep onset occurred at a later hour, and more motor activity during sleep was detected. Although the overall sleep quality, as defined by sleep efficiency score, was similar in the two seasons, in the summer, more active sleep was observed. The authors discuss the finding in terms of circadian rhythms, developmental characteristics, as well as possible environmental factors and family routines, and call for more studies, in different climates and geographical zones, and in different developmental periods.

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Section: Discussioncontrasting

confidence: 86%