The Effects of Stimulant Medication and Training on Sports Competence Among Children With ADHD

Cognitively combined/engaged physical activity for the executive function, symptomology, and motor competence of children and adolescents with attention-deficit/hyperactivity disorder: A systematic review and meta-analysis

BACKGROUND

Cognitively combined/engaged physical activity (CC/CE-PA) has been used as an intervention for children/adolescents with attention-deficit/hyperactivity disorder (ADHD).

METHOD

This review aimed to quantify the effects of CC/CE-PAs on enhancing executive and physical function and alleviating ADHD symptoms in children/adolescents with ADHD. An extensive literature search of online databases identified 32 studies (75 % high-quality studies), of which 22 (pooled n=968) were included in the meta-analysis.

RESULTS

The included studies covered five PA types with varying intervention periods, frequencies, and exercise durations. The CC/CE-PAs showed an overall significant effect on improving executive function (standardized mean difference [SMD]: 1.10) and motor competence (SMD: 0.52) and alleviating ADHD symptoms (SMD: -0.75). Program design and participants' medication status were found to significantly moderate the effect of CC/CE-PA.

CONCLUSION

More evidence is needed to support the effect of CC/CE-PA by comparing it with other interventions and using a rigorous experimental design.

Mechanisms Linking Physical Activity With Mental Health in Children and Adolescents With Neurodevelopmental Disorders: A Systematic Review

INTRODUCTION

Physical activity (PA) is a promising way to improve mental health in children and adolescents with neurodevelopmental disorders (NDDs). However, the underlying mechanisms remain unclear. The current review aimed to explore the potential neurobiological, psychosocial, and behavioral mechanisms between PA interventions and mental health in children and adolescents with NDDs.

METHODS

Web of Science, PsycINFO, SPORTDiscus, MEDLINE, CINAHL, and ERIC were searched from inception to June 2023. Randomized controlled trials/quasi-experimental designs applying PA interventions and reporting at least one mental health outcome and at least one potential mechanism in children and adolescents with NDDs were included. The best evidence synthesis rating system was adopted to determine the strength and consistency of potential mechanisms and was performed in 2024.

RESULTS

In total, 45 studies were included, 29 of which were randomized controlled trials and 16 were quasi-experimental, with a total of 1,751 participants. According to the best evidence synthesis rating system, neurobiological (theta activity and P3 amplitude), psychosocial (social skills and social participation), and behavioral (motor skills and sleep) mechanisms were the frequently examined and consistent mechanisms through which PA affected mental health in children and adolescents with NDDs. However, evidence regarding P3 latency, beta activity, and physical self-concept was insufficient.

DISCUSSION

Future PA interventions could consider neurobiological (theta activity and P3 amplitude), psychosocial (social skills and social participation), and behavioral (motor skills and sleep) mechanisms. Alternatively, PA can be developed as an adjunctive approach with interventions that specifically focus on these mechanisms to enhance mental health in children and adolescents with NDDs.

Physical Activity and Mental Health in Children and Adolescents With Neurodevelopmental Disorders: A Systematic Review and Meta-Analysis

Importance

Children and adolescents with neurodevelopmental disorders experience mental health issues and are encouraged to be brought together in real-life treatment. However, physical activity, which is a promising method for boosting mental health, has only been examined in children and adolescents with certain types of neurodevelopmental disorders.

Objective

To examine the association of physical activity interventions with mental health (ie, cognitive function, psychological well-being, internalizing, and externalizing problems) in children and adolescents with neurodevelopmental disorders and to identify possible moderators.

Data Sources

Studies were searched from inception to May 2023 through Web of Science, PsycINFO, SPORTDiscus, MEDLINE, CINAHL, and ERIC.

Study Selection

Randomized clinical trials or nonrandomized designs applying physical activity interventions and reporting at least 1 mental health outcome in children and adolescents aged 5 to 17 years with neurodevelopmental disorders were included. Two independent reviewers selected and assessed the studies.

Data Extraction and Synthesis

Random multilevel meta-analysis using Hedges g was performed. Data extraction and risk-of-bias assessment were conducted by multiple reviewers. Heterogeneity, publication bias, sensitivity analysis, and moderator analysis were examined to substantiate the results.

Main Outcomes and Measures

The main outcomes were mental health related to cognitive function, psychological well-being, internalizing, or externalizing problems measured by neurocognitive tasks or subjective questionnaires.

Results

A total of 76 studies involving 3007 participants were included in systematic review, 59 of which were used for meta-analysis. The findings indicated that physical activity interventions were associated with significant benefits for overall mental health (g, 0.67; 95% CI, 0.50-0.85), cognitive function (g, 0.74; 95% CI, 0.53-0.95), psychological well-being (g, 0.56; 95% CI, 0.16-0.96), internalizing (g, 0.72; 95% CI, 0.34-1.10), and externalizing problems (g, 0.58; 95% CI, 0.28-0.89). Moderators were also identified: frequency, total sessions, and total duration for overall mental health; total sessions, and total duration for cognitive function; session duration and frequency for psychological well-being; physical activity type for internalizing problems; and session duration for externalizing problems. Moderator analyses showed that type of neurodevelopmental disorder did not modify the associations between physical activity and overall mental health or its subgroups.

Conclusions and Relevance

The findings in this study suggest that children and adolescents with different types of neurodevelopmental disorders may be grouped together when performing physical activity interventions, which were confirmed to be beneficial to overall mental health and its subgroups in this new diagnostic population, but that physical activity interventions should be tailored when targeting different mental health domains.

Attention-deficit hyperactivity disorder is associated with relatively short stature among adolescents

AIM

To estimate the association between attention-deficit hyperactivity disorder (ADHD) and relatively short stature (RSS) among adolescents.

METHODS

Participants in the Israeli Youth Health and Nutrition Survey (2015-2016), a cross-sectional school-based study, completed self-administered questionnaires and underwent anthropometric measurements. Height z-score < -0.7 (<25th percentile) was defined as RSS. Multivariable logistic regression analyses assessed the relation between ADHD and RSS, controlling for age, sex, body mass index (BMI) and socioeconomic status (Basic Model), and also for lifestyle factors such as physical activity, sleep duration, dietary patterns and intakes.

RESULTS

Of 4173 participants (11-18 years, 50.2% males), 654 self-reported ever being diagnosed with ADHD; 3519 participants were controls. Overweight (BMI z-score ≥1) and pubertal status were not different among groups. According to the Basic Model, ADHD was significantly associated with RSS (OR 1.25, 95% CI 1.03-1.50), and even after adjustments for lifestyle factors and dietary intake (OR 1.28, 95% CI 1.03-1.58). Stimulant-treated ADHD adolescents had similar height z-scores and lifestyles as those not treated with stimulants.

CONCLUSION

Attention-deficit hyperactivity disorder was associated with RSS. Height deficit may be intrinsic to ADHD or its pharmacotherapy, rather than a consequence of lifestyle alone. Further studies are needed to determine the causal relationship between ADHD and short stature.

ADHD Prescription Medications and Their Effect on Athletic Performance: A Systematic Review and Meta-analysis

BACKGROUND

Stimulant medications used for the treatment of Attention Deficit-Hyperactivity Disorder (ADHD) are believed to provide a physical advantage in athletics, but several of these medications are not regulated by the World Anti-Doping Association. Given the prevalence of ADHD among the athlete population and concern for abuse of ADHD medications, this review and meta-analysis aimed to evaluate effects of ADHD medications on athletic performance, thereby appraising the validity of claims of performance enhancement.

METHODS

A search of MEDLINE, Embase, CINAHL, and Cochrane Review databases was performed for all randomized controlled trials evaluating athletic performance after ingestion of placebo or ADHD treatment medications from August 2020 through November 2020. All RCTs identified from these search criteria were included for screening, with exclusion of any animal studies. Two reviewers (JB, CK) assessed methodological quality and risk of bias using CONSORT 2010 and Cochrane Collaboration tools. Study results were compiled with corresponding p values for each finding. Effect sizes (Cohen's D) for athletic performance and physiological changes were aggregated for each study. Studies were further screened for homogeneity that would allow for meta-analysis. Heterogeneity was calculated using I2.

RESULTS

A total of 13,033 abstracts evaluating amphetamine, methamphetamine, methylphenidate, and bupropion were screened. The final analysis included nine studies, six of which found significant improvement in athletic performance with use of stimulant medications (p < 0.05). Methylphenidate and amphetamine were consistently identified to have a performance effect. Secondary effects identified included significant increase in heart rate, core temperature, and elevation of various serum hormone levels (p < 0.05). Effect size evaluation found seven studies demonstrating small to large effects on physical performance, as well as in categories of cardiometabolic, temperature, hormone, and ratings of perceived exertion, to varying degrees. A meta-analysis was performed on two studies, demonstrating conflicting results.

CONCLUSIONS

Dopaminergic/noradrenergic agonist medications appear to have a positive effect on athletic performance, as well as effects on physiological parameters. Further consideration of medications currently not regulated, i.e. bupropion, is warranted given evidence of athletic performance enhancement. PROSPERO trial registration number: CRD42020211062; 10/29/2020 retrospectively registered.

Combined Treatment for Children with Attention-Deficit/Hyperactivity Disorder: Brief History, the Multimodal Treatment for Attention-Deficit/Hyperactivity Disorder Study, and the Past 20 Years of Research

Decades of research support 3 interventions for youth with attention-deficit/hyperactivity disorder (ADHD): behavioral intervention, stimulant medication, and their combination. However, professional organizations have long disagreed regarding the best approach for implementing evidence-based interventions for ADHD in practice. The accompanying Society of Developmental and Behavioral Pediatrics guidelines for complex ADHD provide a framework for initiating treatment with behavioral intervention and adding stimulant medication as necessary, resulting in combined/multimodal treatment for many, if not most, children. In this special article, we review the extant literature on combined treatment, with special emphasis on the past 15 years of research that have led to the recommendation for this approach. Specifically, we review the literature on dosing and sequencing of multimodal treatment for youth with ADHD and the impact of multimodal interventions on areas of functional impairment. The extant research provides clear support for a psychosocial-first approach in treating youth with complex ADHD.

The Transition of Youth with ADHD into the Workforce: Review and Future Directions

Previous research suggests that a majority of children with attention-deficit/hyperactivity disorder (ADHD) continue to experience increased impairment across multiple life domains into adulthood. A systematic review of the occupational impairments, and associated educational and financial difficulties, faced by individuals with childhood ADHD was conducted. Systematic searches from PsycINFO and PubMed databases and other sources (i.e., books and consultants with experts) yielded 35 relevant articles that described 19 longitudinal studies on adults with a history of ADHD or related symptoms. Multiple studies indicated that those with a history of ADHD had more educational impairment and were less likely to graduate from high school and college than their peers without a history of ADHD. Subsequently, they faced lower occupational attainment, had more job instability, and demonstrated more impaired job performance, and these outcomes were largely consistent regardless of sex, medication history, or symptom persistence. Similar results were found in clinical and representative national studies in both U.S. and abroad, although older studies tended to indicate less occupational impairment. In addition, ADHD was associated with a number of financial challenges, including lower annual income, more reliance on public aid, and increased risk for homelessness. Future research should use more varied informant sources and utilize innovative measures of occupational impairment at both a macro- and micro-level of analyses. In addition, studies of effective supports and interventions in occupational settings for individuals with ADHD are needed.

Randomized Trial of First-Line Behavioral Intervention to Reduce Need for Medication in Children with ADHD

A study conducted in an analogue summer treatment setting showed that when concurrently receiving behavioral intervention, many children with Attention-Deficit Hyperactivity Disorder (ADHD) did not need medication or maximized responsiveness at very low doses. The present study followed participants in that summer study into the subsequent school year to investigate whether the same pattern would extend to the natural school and home settings. There were 127 unmedicated children with ADHD between the ages of 5 and 13 who were randomly assigned to receive or not receive behavioral consultation (BC) at the start of the school year. Children were evaluated by teachers and parents each week to determine if central nervous system stimulant treatment was needed. Children who received BC were approximately half as likely those who did not (NoBC) to initiate medication use each week at school or home and used lower doses when medicated at school. This produced a 40% reduction in total methylphenidate exposure over the course of the school year. BC and NoBC groups did not significantly differ on end-of-year teacher or parent ratings of behavior, which were positive. Moreover, BC and NoBC groups did not significantly differ in cost of treatment; although children in the BC condition accrued additional costs via the BC, these costs were offset by the associated delay and reduction in medication use. Results add to a growing literature suggesting that the use of low-intensity behavioral intervention as a first-line treatment reduces or eliminates the need for medication in children with ADHD.