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Consequences of the timing of menarche on female adolescent sleep phase preference.

Frey S, Balu S, Greusing S, Rothen N, Cajochen C - PLoS ONE (2009)

Bottom Line: A reasonable question, particularly from the parents' perspective, is: when does this vibrant episode end and adulthood finally start?Thereafter, the sleep phase preference switches to advancing.The current study provides evidence that a clear shift in sleep-wake cycles temporally linked to menarche heralds the beginning of "adult-like" sleep-wake behaviour in women and can be used as a (chrono)biological marker for the onset of adulthood.

View Article: PubMed Central - PubMed

Affiliation: Centre for Chronobiology, Psychiatric University Hospital, University of Basel, Basel, Switzerland. silvia.frey@upkbs.ch

ABSTRACT
Most parents experience their children's puberty as a dramatic change in family life. This is not surprising considering the dynamics of physical and psychosocial maturation which occur during adolescence. A reasonable question, particularly from the parents' perspective, is: when does this vibrant episode end and adulthood finally start? The aim of the present study was to assess the relationship between puberty and the changes in sleep phase preferences during female maturation and adulthood by a cross-sectional survey. The results from 1'187 females aged 5 to 51 years based on self-report measures of sleep preferences on weekdays and on free days as well as the occurrence of menarche, show that in contrast to prepubertal children, adolescent females exhibit a striking progression in delaying their sleep phase preference until 5 years after menarche. Thereafter, the sleep phase preference switches to advancing. The current study provides evidence that a clear shift in sleep-wake cycles temporally linked to menarche heralds the beginning of "adult-like" sleep-wake behaviour in women and can be used as a (chrono)biological marker for the onset of adulthood.

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Sleep debt with reference to pubertal maturation.Sleep debt represents the amount of sleep which is compensated for during free days due to a chronic sleep loss due to social demands during weekdays. The highest level of sleep debt occurs 1 year after menarche. Afterwards, a decrease in sleep debt was observed. Shaded area represents±SD. * indicate significant values compared to 1 year after menarche (Bonferroni adjusted alpha levels, for further statistics please see text).
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pone-0005217-g006: Sleep debt with reference to pubertal maturation.Sleep debt represents the amount of sleep which is compensated for during free days due to a chronic sleep loss due to social demands during weekdays. The highest level of sleep debt occurs 1 year after menarche. Afterwards, a decrease in sleep debt was observed. Shaded area represents±SD. * indicate significant values compared to 1 year after menarche (Bonferroni adjusted alpha levels, for further statistics please see text).

Mentions: To account for interferences of individual sleep preference with social demands the difference between the midpoints of sleep on free days and on weekdays was calculated (Fig. 4). The assessment of mid-sleep time was calculated on the basis of indicated sleep onset and wake up times in the questionnaire. Average sleep duration (Fig. 5) was calculated by the formula (5*sleep duration on weekdays+2*sleep duration during free days) / 7) according to the supplemental data to [15]. Sleep debt accumulated during the weekdays which is compensated on free days is calculated according to the supplemental data to [15] and illustrated with reference to distance to menarche (Fig. 6).


Consequences of the timing of menarche on female adolescent sleep phase preference.

Frey S, Balu S, Greusing S, Rothen N, Cajochen C - PLoS ONE (2009)

Sleep debt with reference to pubertal maturation.Sleep debt represents the amount of sleep which is compensated for during free days due to a chronic sleep loss due to social demands during weekdays. The highest level of sleep debt occurs 1 year after menarche. Afterwards, a decrease in sleep debt was observed. Shaded area represents±SD. * indicate significant values compared to 1 year after menarche (Bonferroni adjusted alpha levels, for further statistics please see text).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2668189&req=5

pone-0005217-g006: Sleep debt with reference to pubertal maturation.Sleep debt represents the amount of sleep which is compensated for during free days due to a chronic sleep loss due to social demands during weekdays. The highest level of sleep debt occurs 1 year after menarche. Afterwards, a decrease in sleep debt was observed. Shaded area represents±SD. * indicate significant values compared to 1 year after menarche (Bonferroni adjusted alpha levels, for further statistics please see text).
Mentions: To account for interferences of individual sleep preference with social demands the difference between the midpoints of sleep on free days and on weekdays was calculated (Fig. 4). The assessment of mid-sleep time was calculated on the basis of indicated sleep onset and wake up times in the questionnaire. Average sleep duration (Fig. 5) was calculated by the formula (5*sleep duration on weekdays+2*sleep duration during free days) / 7) according to the supplemental data to [15]. Sleep debt accumulated during the weekdays which is compensated on free days is calculated according to the supplemental data to [15] and illustrated with reference to distance to menarche (Fig. 6).

Bottom Line: A reasonable question, particularly from the parents' perspective, is: when does this vibrant episode end and adulthood finally start?Thereafter, the sleep phase preference switches to advancing.The current study provides evidence that a clear shift in sleep-wake cycles temporally linked to menarche heralds the beginning of "adult-like" sleep-wake behaviour in women and can be used as a (chrono)biological marker for the onset of adulthood.

View Article: PubMed Central - PubMed

Affiliation: Centre for Chronobiology, Psychiatric University Hospital, University of Basel, Basel, Switzerland. silvia.frey@upkbs.ch

ABSTRACT
Most parents experience their children's puberty as a dramatic change in family life. This is not surprising considering the dynamics of physical and psychosocial maturation which occur during adolescence. A reasonable question, particularly from the parents' perspective, is: when does this vibrant episode end and adulthood finally start? The aim of the present study was to assess the relationship between puberty and the changes in sleep phase preferences during female maturation and adulthood by a cross-sectional survey. The results from 1'187 females aged 5 to 51 years based on self-report measures of sleep preferences on weekdays and on free days as well as the occurrence of menarche, show that in contrast to prepubertal children, adolescent females exhibit a striking progression in delaying their sleep phase preference until 5 years after menarche. Thereafter, the sleep phase preference switches to advancing. The current study provides evidence that a clear shift in sleep-wake cycles temporally linked to menarche heralds the beginning of "adult-like" sleep-wake behaviour in women and can be used as a (chrono)biological marker for the onset of adulthood.

Show MeSH
Related in: MedlinePlus