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: To determine the associations between Adverse Childhood Experiences (ACEs), adolescent screen time, and physical activity during the early COVID-19 pandemic.
Methods
: Data (2016-2020) from the Adolescent Brain Cognitive Development (ABCD) study were analyzed. Linear regression analyses estimated associations between ACE score and screen time and physical activity in May 2020, adjusting for potential confounders.
Results
: Of the 6,749 adolescent respondents primarily aged 12-13, 81.6% reported a history of one ACE or more. In adjusted models, a higher ACE score was significantly associated with greater hours per day of screen time, with youth with ≥4 ACEs associated with 2.3 more hours of screen time per day compared to youth with 0 ACEs. In addition, the adjusted models found that a higher ACE score was associated with lower physical activity; youth with ≥4 ACEs averaged 0.8 fewer hours per week of physical activity and 0.5 fewer days per week of 60 minutes of physical activity compared to youth with 0 ACEs. Gender and race were also significantly associated with changes in screen time and physical activity.
Conclusions
: ACEs are associated with higher adolescent sedentary behaviors, particularly greater screen time, during the early COVID-19 pandemic (May 2020). Clinicians caring for youth exposed to trauma in the post-pandemic environment should explore screen time and physical activity behaviors.
What's New
In a national sample of 6,749 early adolescents surveyed during the COVID-19 pandemic (May 2020), a higher ACE score was associated with significantly greater hours per day of screen time and fewer hours per week of physical activity.
Introduction
During the COVID-19 pandemic, school closures and social distancing policies resulted in dramatic changes in adolescent behavior; adolescent recreational screen time more than doubled from 3.8 hours per day to 7.7 hours per day, not including screen time for schoolwork.
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
In contrast physical activity nearly halved. The percentage of the adolescents meeting Health and Human Services’ (HHS) moderate-to-vigorous physical activity (MVPA) guidelines, defined as 60 minutes of moderate to strenuous physical activity, decreased from 16.1% (pre-pandemic) to 8.9% (during the pandemic- May 2020).
Given that excessive screen time and low physical activity are associated with poor adolescent physical health outcomes such as obesity and negative mental health outcomes such as higher rates of depression and anxiety, understanding correlates for elevated sedentary behaviors is critical to designing effective screenings and interventions.
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
Screen time and early adolescent mental health, academic, and social outcomes in 9- and 10- year old children: Utilizing the Adolescent Brain Cognitive Development SM (ABCD) Study.
Role of Physical Activity and Sedentary Behavior in the Mental Health of Preschoolers, Children and Adolescents: A Systematic Review and Meta-Analysis.
Contemporary screen time usage among children 9-10-years-old is associated with higher body mass index percentile at 1-year follow-up: A prospective cohort study.
In addition, given that the biggest rise in obesity prevalence is seen in late childhood to early adolescence, it is vital to examine screen time and physical activity potential risk factors in this age group.
Recent research has demonstrated that Adverse Childhood Experiences (ACEs) are associated with sedentary behaviors including elevated screen time and low physical activity in youth.
there have been a few notable pediatric studies. A national cohort study by Jackson, et al., found that an ACE score of 4 or more compared to children or adolescents who have experienced no ACEs is associated with a three-fold higher relative risk of heavy digital media use.
A study by Harada, et al., found that ACE exposure in children is associated with lower healthy weight behaviors including elevated screen time and lower rates of physical activity.
However, neither of these studies explored the relationship between ACEs and the dramatic changes in adolescent lifestyle behaviors during the pandemic, a time of significant increased family stressors (financial insecurity, social isolation, and health risks). Further, neither of these studies focused on early adolescence, a critical period of development and growth. This study aims to determine the associations between ACEs, screen time, and physical activity of early adolescents during May 2020. We hypothesize that, after adjusting for confounders, elevated ACE scores among adolescents will be associated with higher rates of sedentary behaviors including higher screen time and lower physical activity.
Methods
Study Population
This study used data from the Adolescent Brain Cognitive Development (ABCD) Study, a large, diverse, prospective cohort study of brain development and health across adolescents from 21 recruitment sites across the U.S. (see Appendix further details). We used data from the from the 3.0 data release which included baseline (2016-2018) one-year follow-up (2017-2019), the first half of two-year follow-up (2018-2019), and the COVID Rapid Response Research (RRR) Survey 1 (May 2020). We omitted study participants who were missing data for sociodemographic variables or did not complete the COVID RRR Survey 1. After omitting these participants, the sample consisted of 6,749 adolescents predominately aged 12-13 (range 10-14) that reflect demographic and socio-economic diversity of the United States. Written informed consent and assent were obtained from a parent/guardian and the child, respectively, to participate in the ABCD study.
Measures
Exposure Variables
ACE score was determined through parent and adolescent responses in the baseline (2016-2018), one-year follow-up (2017-2019), and first half of two-year follow-up (2018-2019) surveys. The ABCD study assesses nine of ten ACEs reflecting the items in the original CDC-Kaiser ACE study;
Relationship of Childhood Abuse and Household Dysfunction to Many of the Leading Causes of Death in Adults: The Adverse Childhood Experiences (ACE) Study.
A yes response to any of the following nine ACEs at any timepoint was counted as one-point; physical abuse, sexual abuse, household violence, household mental illness, substance abuse in the household, divorce/separation, criminal household member, emotional neglect, and physical neglect (Supplemental Table 1).
Outcome Variables
Screen time was determined using adolescents’ COVID RRR Survey 1 (May 2020) responses. Adolescents self-reported hours of use on a typical day of the following 7 modalities: multiple-player gaming, single-player gaming, texting, social media, video chatting, browsing the internet, and watching or streaming movies, videos, or television shows, excluding schoolwork.
Current, future and potential use of mobile and wearable technologies and social media data in the ABCD study to increase understanding of contributors to child health.
Total screen time was calculated by summing average screen time of these seven modalities.
Physical activity was determined using adolescents’ COVID RRR Survey 1 (May 2020) responses, which used questionnaires adapted from the International Physical Activity Questionnaire (IPAQ) Short-form.
Adolescents were asked to report the daily duration (hours and minutes) and frequency (days per week) of daily duration of ≥ 60 minutes spent in moderate to vigorous physical activities (MVPA), which henceforth we will refer to as physical activity.
Covariates
Parents reported participants’ sex (male or female), country of birth (U.S. or outside U.S.), and race/ethnicity (White, Black, Native American, Latino/Hispanic, Asian, or Other), highest parent education (high school or lower vs college or higher), and household income (less than $75,000 or $75,000 or more, based on the U.S. median household income) at baseline.
COVID-19 related variables were assessed in the COVID RRR Survey 1 (May 2020) and included school closure (yes or no), child diagnosed with COVID-19 (yes or likely vs no), and loss of household income due to COVID-19 (yes or no).
Statistical Analyses
Linear regression analyses estimated associations between reported ACE score (0-9, continuous) and May 2020 screen time and physical activity. Analyses were adjusted for sociodemographic characteristics and COVID-19 related variables listed above. Figure 1 shows mean screen time and physical activity by ACE score, categorized as 0 through ≥4. In this figure, we used ≥4 as a cutoff because prior research has found a cumulative ACE score of 4 or more to be “a de facto threshold for identifying elevated risk for a wide range of negative medical, mental health, and social outcomes.”
Heeringa SG, Berglund PA.A Guide for Population-Based Analysis of the Adolescent Brain Cognitive Development (ABCD) Study Baseline Data.; 2020:2020.02.10.942011. doi:10.1101/2020.02.10.942011
Table 1 presents descriptive characteristics of the 6,749 participants aged primarily 12-13 years old. The analytic sample was racially and ethnically diverse (17.4% Latino, 12.1% Black, 6.4% Asian, 2.7% Native American, and 1.3% Other). Four in five participants reported a history of one ACE or more at baseline, and 8.7% reported four or more ACEs. Adolescents reported 7.9 hours of daily screen time and 4.6 hours per week of physical activity in the past week.
Table 1Descriptive characteristics of participants in the Adolescent Brain Cognitive Development Study (ABCD) Study, May 2020, (n=6,749)
Unadjusted and adjusted linear regressions examining the associations between ACE score and lifestyle behaviors (screen time and physical activity) are presented in Table 2. In adjusted models, ACEs were associated with higher screen time, fewer hours per week of physical activity, and fewer days per week completing at least 60 minutes of physical activity. Figure 1 demonstrates that, compared to adolescents with 0 ACEs, youth with ≥4 ACEs averaged 2.3 additional hours of screen time per day, 0.8 fewer hours of physical activity per week, and 0.5 fewer days of 60 minutes of exercise per week.
Table 2Associations among self-reported ACE score and lifestyle behaviors (screen time, exercise) during the COVID-19 pandemic, May 2020, (ACEs 0:4), adjusting for sociodemographic characteristics and COVID-19 related variables
Hours per day of screen time
Hours per week of physical activity
Days completing at least 60 min of exercise in the past week
All adjusted models include sociodemographic characteristics (age, sex, race/ethnicity, household income, parent education, site) and COVID-19 related variables (school closure, child diagnosed with COVID-19, and loss of household income due to COVID-19)
ACEs
0.44 (0.26, 0.62)
<0.001
-0.17 (-0.34, 0.00)
0.048
-0.09 (-0.14, -0.03)
0.001
Sociodemographic characteristics
Age
0.83 (0.60, 1.06)
<0.001
-0.47 (-0.70, -0.23)
<0.001
0.19 (0.12, 0.27)
<0.001
Sex
Female
reference
reference
reference
Male
1.03 (0.63, 1.43)
<0.001
0.51 (0.13, 0.90)
0.008
0.22 (0.10, 0.35)
<0.001
Race/ethnicity
White
reference
reference
reference
Latino / Hispanic
1.17 (0.48, 1.86)
0.001
-0.55 (-1.23, 0.13)
0.115
-0.56 (-0.77, -0.36)
<0.001
Black
2.46 (1.68, 3.23)
<0.001
0.24 (-0.43, 0.92)
0.476
-0.39 (-0.61, -0.170.21)
<0.001
Asian
-0.34 (-1.11, 0.43)
0.389
-0.55 (-1.47, 0.37)
0.244
-0.29 (-0.57, -0.01)
0.041
Native American
2.51 (0.73, 4.29)
0.006
-0.60 (-1.63, 0.43)
0.254
-0.38 (-0.82, 0.05)
0.082
Other
2.26 (-0.04, 4.56)
0.055
-0.82 (-2.41, 0.78)
0.316
0.11 (-0.72, 0.94)
0.796
Household income
$75,000 and greater
reference
reference
reference
Less than $75,000
0.34 (-0.14, 0.81)
0.166
-0.72 (-1.20, -0.23)
0.004
-0.15 (-0.31, 0.00)
0.050
Parents' highest education
College education or more
reference
reference
reference
High school education or less
0.71 (-0.15, 1.57)
0.106
0.04 (-0.57, 0.66)
0.892
-0.46 (-0.67, -0.24)
<0.001
COVID-19 related variables
School closure
No
reference
reference
reference
Yes, physically closed
0.41 (-1.04, 1.85)
0.582
-0.28 (-1.94, 1.39)
0.744
0.01 (-0.45, 0.47)
0.968
Child diagnosed with COVID-19
No
reference
reference
reference
Yes
0.30 (-1.49, 2.10)
0.739
-1.42 (-3.23, 0.39)
0.125
-0.01 (-0.80, 0.77)
0.970
Loss of household income due to COVID- 19
No
reference
reference
reference
Yes
0.16 (-0.25, 0.58)
0.444
0.14 (-0.26, 0.53)
0.492
-0.03 (-0.15, 0.10)
0.685
Bold indicates p<0.05. ABCD propensity weights were applied based on the American Community Survey from the US Census
All adjusted models include sociodemographic characteristics (age, sex, race/ethnicity, household income, parent education, site) and COVID-19 related variables (school closure, child diagnosed with COVID-19, and loss of household income due to COVID-19)
Relative to White respondents, Latino/Hispanic and Black racial/ethnic groups were significantly associated with higher screen time and fewer days completing 60 minutes of exercise in the past week. Male gender was associated with higher screen time and higher physical activity.
Discussion
This large, racially diverse, national study of young adolescents found that self-reported ACEs were significantly associated with sedentary behaviors during the early pandemic (May 2020). Similar to prior studies, we found that adolescents had high levels of recreational screen time with an average of 7.9 hours
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
; compared to youth with 0 ACEs, adolescents with ≥4 ACEs averaged 2.3 additional hours of screen time per day, 0.8 fewer hours of physical activity per week, and 0.5 fewer days of 60 minutes of exercise per week.
This study builds upon pre-pandemic research that has demonstrated significant relationships between ACEs and greater digital media use
by showing that ACEs associated with adolescent sedentary behaviors during the early pandemic. The increase by 2.3 hours increase in screen time is less notable than the three-fold higher difference observed by Jackson et al. This more marginal increase may be partially explained by the global increase in screen time and decrease in physical activity of nearly all youth during the early weeks of the pandemic when nearly all schools were closed. Nevertheless, despite being a smaller association than previously observed, we believe that two additional hours of screen represents a meaningful difference in behavior. Further, an ACE score of ≥4 was associated with 0.8 hours fewer hours of physical activity per week and 0.5 days fewer days completed 60 minutes of physical activity, which rounded is one day fewer per week of meeting HHS physical activity guidelines. This decrease in physical activity among youth who have experienced childhood adversity is notable because physical activity, particularly participation in sports teams, has been found to protect against ACE-associated toxic stress; specifically, it has been associated with lower rates of the future development depression and anxiety, thus, pointing to a pressing need to develop interventions to increase physical activity for youth with a history of ACEs post-COVID.
Our study further adds to the literature by examining sedentary behavioral patterns of early adolescents. The developmental trajectory from childhood to emerging adulthood is a particularly critical period, which is vulnerable to the establishment of health-related behavioral risk factors.
Thus, understanding the correlates of excessive screen time and lower physical activity is important to inform potential intervention strategies that break patterns of poor health behaviors that emerge in early adolescence.
We also found that identifying as Latino/Hispanic or Black was significantly associated with higher screen time and fewer days completing 60 minutes of physical activity relative to White respondents. This is consistent with pre-pandemic findings,
which are thought to be secondary to structural racism -driven factors including differences in built environment. For example, historic redlining has led to higher rates of families of racial minorities living in socially disadvantaged, high-crime neighborhoods, with fewer green spaces,
which may create safety risks that limit families’ ability to engage in outdoor physical activities. Further, these factors were likely exacerbated by the disproportional effects of COVID-19 pandemic on racial groups. Studies have shown that during the pandemic, people from marginalized racial groups experienced higher rates of food insecurity, COVID-19 related morbidity and mortality, and had a likelihood of being an essential worker.
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
these findings are critical to future screening and treatment practices as the pandemic continues to evolve. This study further highlights the importance of screening for ACEs. Once identified, clinicians and future programming caring for ACE-exposed adolescents and their families can provide education about i) the potential harms of heavy digital use and ii) the biological and psychosocial benefits of physical activity to reduce stress and stress effects. Using a trauma-informed lens, they can next help identify family strengths and context-appropriate strategies to limit digital media use and increase physical activity.
Limitations to this study include the use of self-report data and potential for retrospective recall bias. Second, adolescents often multitask on screens; thus, the computed total could be an overestimate. Third, one ACE from the original Kaiser study, emotional abuse, was not assessed, so we cannot estimate its effects. Nonetheless, these findings provide support for the importance of exploring screen time and physical activity among adolescents who have experienced childhood adversity, educating families about potential mental health consequences, and collaborating on treatment options. Future studies should explore resiliency factors that mitigate the relationship between childhood adversity and lifestyle behaviors as the pandemic progresses.
Nagata JM, Cortez CA, Cattle CJ, et al. Screen Time Use Among US Adolescents During the COVID-19 Pandemic: Findings From the Adolescent Brain Cognitive Development (ABCD) Study. JAMA Pediatr. Published online November 1, 2021. doi:10.1001/jamapediatrics.2021.4334
Screen time and early adolescent mental health, academic, and social outcomes in 9- and 10- year old children: Utilizing the Adolescent Brain Cognitive Development SM (ABCD) Study.
Role of Physical Activity and Sedentary Behavior in the Mental Health of Preschoolers, Children and Adolescents: A Systematic Review and Meta-Analysis.
Contemporary screen time usage among children 9-10-years-old is associated with higher body mass index percentile at 1-year follow-up: A prospective cohort study.
Relationship of Childhood Abuse and Household Dysfunction to Many of the Leading Causes of Death in Adults: The Adverse Childhood Experiences (ACE) Study.
Current, future and potential use of mobile and wearable technologies and social media data in the ABCD study to increase understanding of contributors to child health.
Heeringa SG, Berglund PA.A Guide for Population-Based Analysis of the Adolescent Brain Cognitive Development (ABCD) Study Baseline Data.; 2020:2020.02.10.942011. doi:10.1101/2020.02.10.942011
Conflicts of interest statement: The authors have no conflict to declare.
Funding/Support: J.M.N. was funded by the American Heart Association Career Development Award (CDA34760281) and the National Heart, Lung, and Blood Institute (K08HL159350).
Role of the Funder/Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Information: The ABCD Study was supported by the National Institutes of Health and additional federal partners under award numbers U01DA041022, U01DA041025, U01DA041028, U01DA041048, U01DA041089, U01DA041093, U01DA041106, U01DA041117, U01DA041120, U01DA041134, U01DA041148, U01DA041156, U01DA041174, U24DA041123, and U24DA041147. A full list of supporters is available at https://abcdstudy.org/nihcollaborators. A listing of participating sites and a complete listing of the study investigators can be found at https://abcdstudy.org/principal-investigators.html. ABCD consortium investigators designed and implemented the study and/or provided data but did not necessarily participate in the analysis or writing of this report
Reported n's do not correspond with % because propensity weights were applied, and each participant has a sample weighting
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