Sleep is a neurophysiological active process essential for healthy physical and cognitive development. In Portugal, there is no recent and objective data on how children sleep. Given the importance of sleep in child health and development as well as the health gains achieved by establishing healthy sleep patterns since childhood, it seems extremely relevant to assess the various sleep parameters of Portuguese children and correlate them with their psychomotor and anthropometric development indicators. The results of this research work may support the implementation of sleep health education measures among parents, educators and policy makers, thus contributing to support the implementation of practices that promote sleep quality, napping until later in life as well as to promote the health of future adults.
Study Type
OBSERVATIONAL
Enrollment
119
Actigraphy is a validated complementary means of diagnosis, the gold standard for the assessment of circadian rhythm.
Assessment scale for skills in child development from 0 to 6 years.
Questionnaire for assessing sleep habits, validated for the Portuguese population (4) which allows us to understand the sleep hygiene habits of the child
Melatonin will be measured in the first-morning urine and it is considered to be a good marker of plasma MLT level since its concentration is highly correlated with nocturnal plasma melatonin.
Faculty of Medicine (FMUP)
Porto, Portugal
RECRUITINGSleep patterns
Sleep patterns based on movement tracking by sleep actigraphy.
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
Psychomotor development
The psychomotor developmental coefficient obtained through the application of the evaluation tool Schedule of growing skills II (SGS II) development scale.
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
Sleep hygiene
Sleep hygiene data obtained through the application of the Children Sleep habits questionnaire validated for the Portuguese population.
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
Melatonin levels
Levels of 6-sulphatoxymelatonin-aMT6, melatonin metabolite, measured in urine.
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
Body Mass Index [BMI]
Weight \[kg, kilogram\] and height \[m, meter\] at the date of the evaluation for BMI-for-age calculation
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
Number of infectious events
Number of infectious events in the first year of life and previous year of the following assessments.
Time frame: At 24 - 30 months of age, at 3 years of age and at 4 years of age
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