Piloting a Sequential, Multiple Assignment, Randomized Trial for Mothers with Attention-Deficit/Hyperactivity Disorder and Their At-Risk Young Children

The Sequential Multiple Assignment Randomized Trial for Controlling Infectious Diseases: A Review of Recent Developments

Infectious diseases have posed severe threats to public health across the world. Effective prevention and control of infectious diseases in the long term requires adapting interventions based on epidemiological evidence. The sequential multiple assignment randomized trial (SMART) is a multistage randomized trial that can provide valid evidence of when and how to adapt interventions for controlling infectious diseases based on evolving epidemiological evidence. We review recent developments in SMARTs to bring wider attention to the potential benefits of employing SMARTs in constructing effective adaptive interventions for controlling infectious diseases and other threats to public health. We discuss 2 example SMARTs for infectious diseases and summarize recent developments in SMARTs from the varied aspects of design, analysis, cost, and ethics. Public health investigators are encouraged to familiarize themselves with the related materials we discuss and collaborate with experts in SMARTs to translate the methodological developments into preeminent public health research. (Am J Public Health. 2023;113(1):49-59. https://doi.org/10.2105/AJPH.2022.307135).

Reduced Glx and GABA Inductions in the Anterior Cingulate Cortex and Caudate Nucleus Are Related to Impaired Control of Attention in Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that impairs the control of attention and behavioral inhibition in affected individuals. Recent genome-wide association findings have revealed an association between glutamate and GABA gene sets and ADHD symptoms. Consistently, people with ADHD show altered glutamate and GABA content in the brain circuitry that is important for attention control function. Yet, it remains unknown how glutamate and GABA content in the attention control circuitry change when people are controlling their attention, and whether these changes can predict impaired attention control in people with ADHD. To study these questions, we recruited 18 adults with ADHD (31-51 years) and 16 adults without ADHD (28-54 years). We studied glutamate + glutamine (Glx) and GABA content in the fronto-striatal circuitry while participants performed attention control tasks. We found that Glx and GABA concentrations at rest did not differ between participants with ADHD or without ADHD. However, while participants were performing the attention control tasks, participants with ADHD showed smaller Glx and GABA increases than participants without ADHD. Notably, smaller GABA increases in participants with ADHD significantly predicted their poor task performance. Together, these findings provide the first demonstration showing that attention control deficits in people with ADHD may be related to insufficient responses of the GABAergic system in the fronto-striatal circuitry.

Evaluating the Feasibility and Acceptability of the Lifestyle Enhancement for ADHD Program

OBJECTIVE

To evaluate the feasibility and acceptability of the Lifestyle Enhancement for Attention Deficit Hyperactivity Disorder (ADHD) Program (LEAP), a novel parent behavior management training program that promotes physical activity (PA) and positive health behaviors and is enhanced with mobile health technology (Garmin) and a social media (Facebook) curriculum for parents of children with ADHD.

METHODS

The study included parents of children ages 5-10 years diagnosed with ADHD who did not engage in the recommended >60 min/day of moderate to vigorous PA based on parent report at baseline. Parents participated in the 8-week LEAP group and joined a private Facebook group. Children and one parent wore wrist-worn Garmin activity trackers daily. Parents completed the Treatment Adherence Inventory, Client Satisfaction Questionnaire, and participated in a structured focus group about their experiences with various aspects of the program.

RESULTS

Of 31 children enrolled, 51.5% had ADHD combined presentation, 36.3% with ADHD, predominately inattentive presentation, and 12.1% had unspecified ADHD (age 5-10; M = 7.6; 48.4% female). Parents attended an average of 86% of group sessions. On average, parents wore their Garmins for 5.1 days/week (average step count 7,092 steps/day) and children for 6.0 days/week (average step count 9,823 steps/day). Overall, parents and children were adherent to intervention components and acceptability of the program was high.

CONCLUSIONS

Findings indicate that the LEAP program is an acceptable and feasible intervention model for promoting PA among parents and their children with ADHD. Implications for improving ADHD symptoms and enhancing evidence-based parent training programs are discussed.

Do Parents' ADHD Symptoms Affect Treatment for their Children? The Impact of Parental ADHD on Adherence to Behavioral Parent Training for Childhood ADHD

Nearly half of all youth with Attention-Deficit Hyperactivity Disorder (ADHD) have at least one parent who also meets criteria for the disorder, and intergenerational ADHD is a significant risk factor for poor outcomes following evidence-based behavioral parent training (BPT) programs. Given that BPT is predicated on consistent parental involvement, symptoms of ADHD in parents may be a significant barrier to effective engagement with BPT treatment. In the present investigation, we examine the effect of parental ADHD symptoms on BPT treatment engagement for children with ADHD-predominantly inattentive presentation (N = 148, ages 7-11). We examine the following parent- and clinician-rated treatment engagement domains: between-session skill adherence, in-session participation, perceived skill understanding, treatment-engagement attitudes, and session attendance. Parent- and clinician-rated between-session adherence was the only treatment engagement domain related significantly to parental ADHD symptoms. This finding was robust and remained even after accounting for symptoms of parental anxiety and depression, child ADHD symptom severity, and various sociodemographic factors (parental education level, household income, employment status, and being a single parent). These findings suggest that targeting parental ADHD symptoms in the context of parenting interventions may be a promising approach for improving adherence and treatment outcomes for BPT interventions.