Screen time exposure and sleep among children with developmental disabilities

A Systematic Review of Digital Interventions to Promote Physical Activity in People With Intellectual Disabilities and/or Autism

This systematic review synthesized the literature on digital health interventions for the promotion of physical activity (PA) among people with intellectual disabilities and/or autism. From an initial screening of 553 records, 10 studies underwent full-text review. Data were extracted relating to study, intervention, and sample characteristics and PA-related findings. Methodological quality was evaluated using the Crowe Critical Appraisal Tool. There were mixed findings pertaining to the effectiveness of digital health interventions for promoting PA among these populations. Positive results were reported for three of five active-video-game interventions, two of three social-media-based interventions, and one of two e-learning/multicomponent interventions. Digital health interventions can potentially be effective for promoting PA among people with intellectual disabilities and/or autism. However, the large variation in the samples and intervention types and a reliance on pre- and quasi-experimental research designs suggest that inferences should be made with caution and additional research is needed.

Chronotype and time-of-day effects on spatial working memory in preschool children

STUDY OBJECTIVES

Spatial working memory (SWM) capacity subserves complex cognitive functions, yet it is unclear whether individual diurnal preferences and time-of-day influence SWM in preschool children. The main and interaction effects of chronotype and time-of-day on SWM and SWM differences in preschoolers with different chronotypes within each time-of-day group will be examined.

METHODS

We studied a subset of typically developing 4.5-year-olds taking part in a birth cohort study (n = 359). The Children's Chronotype Questionnaire categorized children into morning-, intermediate-, and evening-types. Using a computerized neuropsychological test (Cambridge Neuropsychological Test Automated Battery), SWM was determined from the total number of between-search errors (ie, between search-total errors) and Strategy scores. Higher between search-total errors or lower Strategy scores indicated worse SWM. Time-of-day was categorized into late morning (10:00 am to 11:59 am), afternoon (12:00 pm to 3:59 pm), and late afternoon (4:00 pm to 6:30 pm). In a subsample (n = 199), caregiver-reported chronotype was validated using actigraphy-measured sleep midpoint.

RESULTS

After controlling for ethnicity, no significant main and interaction effects of chronotype and time-of-day on between search-total errors and Strategy scores were seen (all P > .05). However, evening-types outperformed morning-types (ie, lower mean between search-total errors) in the late afternoon (P = .013) but not in the late morning and afternoon (all P > .05). Actigraphy data in the subsample confirmed that evening-types had later sleep midpoints during weekdays and weekends (P < .001).

CONCLUSIONS

Since evening-type preschoolers had better SWM in the late afternoon compared to morning-type preschoolers, this gives insights into optimal learning opportunities in early childhood education.

CITATION

Abdul Jafar NK, Tham EKH, Eng DZH, et al. Chronotype and time-of-day effects on spatial working memory in preschool children. J Clin Sleep Med. 2023;19(10):1717-1726.

The relationship between screen time before bedtime and behaviors of preschoolers with autism spectrum disorder and the mediating effects of sleep

BACKGROUND

There are overlapping effects of screen time and sleep on children's behavior. The purpose of this study was to explore the relationship of screen time with behavior problems in children with autism spectrum disorder (ASD) and the probable mediating effects of sleep, in order to provide evidence for the need for clinical identification and intervention.

METHODS

A sample of 358 preschoolers with ASD were included. We investigated the children's basic characteristics of sex and age, ASD symptoms (ABC, CARS, and ADOS-2), neurodevelopment (GDS-C), sleep habits (CSHQ), and behavior (CBCL). Pearson correlation tests were used to determine the direct correlations among children's screen time, CBCL, and CSHQ. Linear regression analysis was used to explore whether screen time predicted total score of CBCL. Multi-step linear regression analysis was used to investigate the mediating effect of sleep on the relationship between screen time and total score of CBCL.

RESULTS

Screen time before bedtime was correlated with CBCL and CSHQ, which indicated that screen time before bedtime was correlated with sleep and behavior in children with ASD. Screen time before bedtime was a predictor of CBCL total score (indicating children's behavior), and CSHQ total score (indicating children's sleep habits) played a partial mediating role between screen time before bedtime and children's behavior.

CONCLUSION

Clinicians should support and educate parents of children with ASD, which should focus on managing screen time, especially screen time before bedtime.

Screen time and associated risks in children and adolescents with autism spectrum disorders during a discrete COVID-19 lockdown period

BACKGROUND

The COVID-19 pandemic may affect the screen time of children and adolescents with Autism Spectrum Disorders (ASD). This study aimed to examine the screen time of children and adolescents with ASD during a discrete lockdown period in France and identify risk factors for excessive screen time.

METHODS

The study sample consisted of 249 ASD subjects, 3-17 years of age, enrolled in the ELENA cohort. Information about the screen time was collected using the COVID-19 questionnaire specially created for this study. The clinical, socio-demographic and familial characteristics were collected from the last ELENA follow-up visit.

RESULTS

More than one third of subjects exceeded recommended levels of screen time and almost half of parents reported that their child spent more time using screen since COVID-19 pandemic beginning. Excessive screen time was significantly related to age with higher screen time in adolescents. Risk factors for excessive screen time were high withdrawn behaviors and low socioeconomic status for children, and older age and male gender for adolescents.

CONCLUSION

These results imply to adapt the recommendations already formulated in general population concerning the good use of screens in youth with ASD. Specific recommendations and suitable guidance are needed to help children and adolescents with ASD and their parents implement the more optimal use of screen time activities for educational, therapeutic and social goals.

TRIAL REGISTRATION NUMBER

NCT02625116.

Adverse Effects of the COVID-19 Pandemic on Movement and Play Behaviours of Children and Youth Living with Disabilities: Findings from the National Physical Activity Measurement (NPAM) Study

All children and youth require ample physical activity (PA), low levels of sedentary behaviour (SB), and adequate sleep to stay healthy. Children and youth living with disabilities (CYWD) tend to have fewer opportunities for participation in PA and outdoor play compared with their typically developing peers. In turn, CYWD are typically less active and more sedentary, on average, compared with their peers. The COVID-19 pandemic reduced opportunities for many children and youth to participate in PA and outdoor play. The purpose of this study was to assess parent-perceived changes in PA (including outdoor play), SB (including screen time), and sleep quality and quantity, due to COVID-19 and related restrictions, in a national cohort of Canadian CYWD. We recruited parents of school-aged CYWD (N = 151) in May 2020. In an online survey, parents reported their child's previous 7-day PA, SB, and sleep, as well as perceived changes in their child's movement and play behaviours due to COVID-19 and related restrictions. Parent-perceived parental support for their child's movement and play behaviours during the pandemic was also assessed. We used descriptive statistics to describe the child's movement behaviours and assessed the association between movement behaviours and parental factors using Pearson and point-biserial correlations. Few (5.3%) CYWD met PA recommendations and 13.2% met screen time recommendations during the acute period of the COVID-19 pandemic. More CYWD (66.2%) were meeting sleep recommendations. Overall, only 1.3% of CYWD were meeting the combined movement guidelines. Parent encouragement was positively associated with the child's outdoor PA (0.23), wheeling, walking, and biking (0.19), indoor PA (0.16), and family-based PA (0.26). Parental co-play was similarly positively associated with the child's outdoor PA (0.26), wheeling, walking, and biking (0.39), indoor PA (0.16), and family-based PA (0.26). Parents perceived their CYWD to be less active and more sedentary as a result of COVID-19 and the related restrictions. Parents of CYWD have an important role in encouraging healthy movement behaviours. Return to movement and play post-COVID guidelines should include tailored strategies for CYWD and their families to mitigate the negative impacts of the pandemic.

The Moderating Role of Parental Sleep Knowledge on Children with Developmental Disabilities and Their Parents' Sleep

BACKGROUND

Children with intellectual and developmental difficulties often experience sleep problems, which in turn may impact parental sleep patterns. This study explored the role of parental sleep knowledge as a moderator on the relationship between child sleep and parental sleep impairment.

METHODS

582 parents or caregivers (92.6% mothers) of children with different developmental disabilities (Age M = 9.34, 29.5% females) such as Down's syndrome, participated in an online survey. Multiple regression analysis was conducted.

RESULTS

Parental sleep knowledge of child sleep was a moderating variable in the relationship between child sleep nocturnal duration and parental sleep impairment. Although overall, sleep knowledge was high in this sample, two specific knowledge gaps were identified namely child sleep duration requirements, and the recognition of signs of a well-rested child.

CONCLUSION

This study has provided evidence that increased parental sleep knowledge can positively impact both child and parental sleep outcomes.