BabySleep_Noise

Study objectives: During infancy, adequate sleep is crucial for physical and neurocognitive development. In adults and children, night-time noise exposure is associated with sleep disturbances. However, whether and to what extent infants’ sleep is affected, is unknown. Thus, this study investigated the relationship between nocturnal transportation noise and actimetry-derived habitual sleep behavior across the first year of life.Methods: In 144 healthy infants (63 girls), nocturnal (23:00–7:00) transportation noise (i.e., road, railway, and aircraft) was modeled at the infants’ individual places of residence. Using actimetry, we recorded movement patterns for 11 days in a longitudinal design at 3, 6, and 12 months and derived the recently proposed core sleep composites of night-time sleep duration, activity, and variability. Using linear-mixed effects models, we determined associations between noise exposure and sleep composites. Sex, gestational age, parents’ highest educational level, infants’ age, and the existence of siblings served as control variables.Results: In models without interactions, night-time noise was unrelated to sleep composites across the first year of life (p > .16). Exploratory analyses of an interaction between noise and the existence of siblings yielded an association between night-time transportation noise and sleep duration in infants without siblings only (p=0.004). Conclusion: In our study, sleep in infants during the first year of life was relatively robust against external perturbation by night-time transportation noise. However, particularly in children without siblings increasing night-time transportation noise reduced sleep duration. This suggests that the habitual noise environment may modulate individual susceptibility to adverse effects of noise on sleep.

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Association of transportation noise with sleep during the first year of life: A longitudinal study

Environmental Research ◽

10.1016/j.envres.2021.111776 ◽

2021 ◽

pp. 111776

Author(s):

Christine Blume ◽

Sarah F. Schoch ◽

Danielle Vienneau ◽

Martin Röösli ◽

Malcolm Kohler ◽

...

Keyword(s):

Longitudinal Study ◽

First Year ◽

Transportation Noise ◽

First Year Of Life

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Predictors of sleep disturbances in the first year of life: a longitudinal study

Sleep Medicine ◽

10.1016/j.sleep.2017.04.015 ◽

2017 ◽

Vol 36 ◽

pp. 78-85 ◽

Cited By ~ 7

Author(s):

Stefania Sette ◽

Emma Baumgartner ◽

Raffaele Ferri ◽

Oliviero Bruni

Keyword(s):

Longitudinal Study ◽

Sleep Disturbances ◽

First Year ◽

First Year Of Life

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Longitudinal Study of Sleep Behavior in Normal Infants during the First Year of Life

Journal of Clinical Sleep Medicine ◽

10.5664/jcsm.4114 ◽

2014 ◽

Vol 10 (10) ◽

pp. 1119-1127 ◽

Cited By ~ 32

Author(s):

Oliviero Bruni ◽

Emma Baumgartner ◽

Stefania Sette ◽

Mario Ancona ◽

Gianni Caso ◽

...

Keyword(s):

Longitudinal Study ◽

First Year ◽

Sleep Behavior ◽

First Year Of Life

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Should I study or should I go (to sleep)? The influence of test schedule on the sleep behavior of undergraduates and its association with performance

PLoS ONE ◽

10.1371/journal.pone.0247104 ◽

2021 ◽

Vol 16 (3) ◽

pp. e0247104

Author(s):

Ignacio Estevan ◽

Romina Sardi ◽

Ana Clara Tejera ◽

Ana Silva ◽

Bettina Tassino

Keyword(s):

Sleep Duration ◽

Test Performance ◽

Well Being ◽

First Year ◽

Start Time ◽

Previous Night ◽

Sleep Behavior ◽

First Year Students ◽

The Impact ◽

Test Schedule

Sleep is crucial for college students’ well-being. Although recommended sleep duration is between 7–9 hours per day, many students do not sleep that much. Scholar demands are among the causes of observed sleep deprivation in youth. We explored the influence of having a school test on previous night sleep in first-year students and the association of sleep duration and test performance. We ran two surveys in freshman students of the Universidad de la República, Montevideo, Uruguay: 1) 97 students of the School of Sciences who took the test at the same time; and 2) 252 School of Psychology students who took the test in four successive shifts. More than 1/2 of the participants (survey #1) and almost 1/3 (survey #2) reported short regular sleep duration (< 7h). In both samples, the sleep duration of the night before the test was reduced with respect to regular nights (survey #1: 2.1 ± 0.2 h, p < 0.001; survey #2: between 1.7 ± 0.4 h and 3.6 ± 0.3 h, all p < 0.001), with more than 10% of the students who did not sleep at all. In survey 2, sleep duration increased in later shifts (F (3,248) = 4.6, p = 0.004). Using logit regressions, we confirmed that sleep duration was positively related to test scores in both samples (survey #1: exp B = 1.15, p < 0.001; pseudo-R2 = 0.38; survey #2: exp B = 1.03, p < 0.001; pseudo-R2 = 0.25). Delaying test start time may prevent the reduction in sleep duration, which may also improve school performance. In addition, educational policies should include information for students about the impact of sleep on learning and of the consequences of reduced sleep duration.

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Is ghrelin a biomarker of early-onset scoliosis in children with Prader–Willi syndrome?

Orphanet Journal of Rare Diseases ◽

10.1186/s13023-021-01930-1 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Dibia Liz Pacoricona Alfaro ◽

Gwenaelle Diene ◽

Graziella Pinto ◽

Jean-Pierre Salles ◽

Isabelle Gennero ◽

...

Keyword(s):

Cobb Angle ◽

Early Onset ◽

Longitudinal Design ◽

Early Onset Scoliosis ◽

First Year ◽

Significant Difference ◽

Total Ghrelin ◽

First Year Of Life ◽

Control Study

Abstract Background Adolescents with idiopathic scoliosis display high ghrelin levels. As hyperghrelinemia is found in patients with PWS and early-onset scoliosis (EOS) is highly prevalent in these patients, our aims were to explore (1) whether ghrelin levels differ between those with and without EOS and correlate with scoliosis severity, and (2) whether ghrelin levels in the first year of life are associated with the later development of EOS. Methods We used a case control study design for the first question and a longitudinal design for the second. Patients with PWS having plasma ghrelin measurements recorded between 2013 and 2018 in our database were selected and 30 children < 10 years old with EOS and 30 age- and BMI-matched controls without EOS were included. The Cobb angle at diagnosis was recorded. In addition, 37 infants with a ghrelin measurement in the first year of life were followed until 4 years of age and assessed for EOS. Total ghrelin (TG), acylated (AG) and unacylated ghrelin (UAG), and the AG/UAG ratio were analyzed. Results EOS children had an AG/UAG ratio statistically significantly lower than controls. The Cobb angle was positively correlated with TG and UAG. TG and AG in the first year of life were higher in infants who later develop EOS without reaching a statistically significant difference. Conclusions Our results suggest that ghrelin may play a role in the pathophysiology of EOS in PWS. Higher ghrelinemia in the first year of life required careful follow-up for EOS.

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Bedtimes, Bedtime Routines, and Children’s Sleep across the First Two Years of Life

SLEEP ◽

10.1093/sleep/zsab045 ◽

2021 ◽

Author(s):

Barbara H Fiese ◽

Tianying Cai ◽

Carolyn Sutter ◽

Kelly K Bost

Keyword(s):

Sleep Duration ◽

Sleep Problems ◽

Sleep Latency ◽

Book Reading ◽

First Year ◽

Strong Kids ◽

Waking And Sleep ◽

First Year Of Life ◽

Children’S Sleep ◽

Bedtime Routine

Abstract Study Objectives The first objective of this study was to determine whether establishing bedtime routines in the first year of life predicts better sleep outcomes (i.e., longer sleep duration, less nighttime waking, earlier bedtime, shorter sleep latency, fewer sleep problems) across the first two years of life. The second objective was to determine whether specific adaptive bedtime activities (e.g., book reading) were associated with sleep outcomes. The third objective was to describe changes in adaptive bedtime activities (hug/kiss caregiver, say goodnight to family) across the first two years of life. Methods Parents of 468 children from the STRONG Kids 2 birth cohort were surveyed about bedtime and bedtime routines, their child’s sleep duration, nighttime waking, sleep latency and sleep problems at 3, 12, 18, and 24 months of age. Results Cross-lagged panel models revealed partial evidence for reciprocal associations between bedtime routine consistency and adaptive bedtime activities and better sleep outcomes over time. Specifically, more bedtime routine consistency predicted less nighttime waking and sleep problems, and more bedtime adaptive activities predicted longer sleep duration and fewer sleep problems. Discussion The findings are discussed from a developmental perspective to highlight how consistency of bedtime routines established as early as three months of age may affect sleep outcomes and that the adaptive activities associated with these routines may increase in frequency over the first two years of life.

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Type of Milk Feeding and Introduction to Complementary Foods in Relation to Infant Sleep: A Systematic Review

Nutrients ◽

10.3390/nu13114105 ◽

2021 ◽

Vol 13 (11) ◽

pp. 4105

Author(s):

Xiaoxi Fu ◽

Amy L. Lovell ◽

Andrea J. Braakhuis ◽

Richard F. Mithen ◽

Clare R. Wall

Keyword(s):

Sleep Duration ◽

Longitudinal Design ◽

Infant Sleep ◽

Complementary Foods ◽

Night Time ◽

Cross Sectional ◽

Breastfed Infants ◽

Online Searches ◽

Milk Feeding

Inconsistent conclusions from infant sleep and feeding studies may influence parents feeding-related decisions. This study aimed to systematically review the existing literature on infant sleep and its relation to the timing of introduction to complementary foods and type of milk feeding to better understand their role(s) in infant sleep. Cohort, longitudinal, cross-sectional studies, and controlled trials were identified using online searches of five databases up to April 2020. Twenty-one articles with a total of 6225 infants under 12 months-of-age were eligible. Exclusively breastfed infants (≤6 months-of-age) had a greater number of night wakings, but most studies (67%) reported no difference in night-time and 24 h sleep duration compared to formula-fed infants. However, after 6 months-of-age, most studies (>65%) reported breastfed infants to sleep less in the night-time and over 24 h compared to formula-fed infants. Furthermore, studies reported no association between the timing of introduction to complementary foods and infant sleep duration (<12 months-of-age). Future studies using standardized methodologies and definitions, transdisciplinary expertise, and longitudinal design are required to better understand the complex role of feeding on sleep.

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The Development of Swallowing Respiratory Coordination

Perspectives on Swallowing and Swallowing Disorders (Dysphagia) ◽

10.1044/sasd18.1.19 ◽

2009 ◽

Vol 18 (1) ◽

pp. 19-24

Author(s):

Maggie-Lee Huckabee

Keyword(s):

Cortical Activation ◽

First Year ◽

Healthy Children ◽

Nasal Airflow ◽

Single Session ◽

Primary Finding ◽

Patterns Of Behavior ◽

Cortical Modulation ◽

First Year Of Life ◽

Swallowing Apnea

Abstract Research exists that evaluates the mechanics of swallowing respiratory coordination in healthy children and adults as well and individuals with swallowing impairment. The research program summarized in this article represents a systematic examination of swallowing respiratory coordination across the lifespan as a means of behaviorally investigating mechanisms of cortical modulation. Using time-locked recordings of submental surface electromyography, nasal airflow, and thyroid acoustics, three conditions of swallowing were evaluated in 20 adults in a single session and 10 infants in 10 sessions across the first year of life. The three swallowing conditions were selected to represent a continuum of volitional through nonvolitional swallowing control on the basis of a decreasing level of cortical activation. Our primary finding is that, across the lifespan, brainstem control strongly dictates the duration of swallowing apnea and is heavily involved in organizing the integration of swallowing and respiration, even in very early infancy. However, there is evidence that cortical modulation increases across the first 12 months of life to approximate more adult-like patterns of behavior. This modulation influences primarily conditions of volitional swallowing; sleep and naïve swallows appear to not be easily adapted by cortical regulation. Thus, it is attention, not arousal that engages cortical mechanisms.

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