STUDY OF THE DURATION OF NIGHT AND AFTERNOON SLEEP IN PRESCHOOL AGE CHILDREN
Keywords:
night sleep, afternoon sleep, children, preschool age, childhood obesityAbstract
The formation of a child's personality begins already in preschool age as a period of intensive psychophysical
development. The period is defined as a key one in which children form behavioral patterns for physical
activity and eating. The Purpose of the present study is to examine the influence of nighttime and afternoon sleep
duration on preschool age children's weight. Material And Methods. 104 children of preschool age (5-6 years old)
are the object of the study. The contingent of the study are children aged 5 and 6 in 25 kindergartens on the territory
of the municipality of Stara Zagora. A study was conducted on the level of motor activity and the degree of excess
body mass of children born in the period 2011-2012 under a project of the Faculty of Medicine. The subject of the
study is the anthropometric indicators of the children, their physical development and physical activity. A survey
method was used to study the duration of night and afternoon sleep.Results And Discussion. The obtained data show
that during the week the majority of children (84.4%) do not have a normal sleep duration (10-13 hours), and only
12.8% sleep enough and comply with the recommended norms. On weekends, a significant decrease in children
(43.1%) with shorter sleep duration and an increase in children (51.4%) with normal night sleep duration was
observed. In the studied group higher average values of BMI were found in children with reduced duration of night
sleep during the week 19.5±3, compared to those with normal duration of sleep 19.9±1.9, without statistically
significant differences (P> 0.05). When comparing the average values of the abdominal circumference in children
with reduced duration of night sleep during the week 67±8 cm with the normal duration 68±5.6 cm, higher values
are found in children with normal duration of sleep, without existence of statistically significant differences
(P>0.05).CONCLUSIONS. The results of the conducted study proved that a large percentage of children of
preschool age (84.4%) do not follow the recommendations for normal duration of night sleep (10 and 13 hours)
applied during the week, only 12.8% of them are of normal duration of sleep. On weekends, the percentage of
children (51.4%) complying with the norms for the duration of night sleep increases significantly. As well as a
significant reduction in the percentage of children who sleep less than 10 hours a day - 43.1%.
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