Effect of Game-based HIIT Program on the Executive Function of Children With ADHD
NCT ID: NCT05308758
Last Updated: 2025-08-08
Study Results
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Basic Information
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COMPLETED
NA
47 participants
INTERVENTIONAL
2021-01-01
2024-06-30
Brief Summary
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Methods/design: A total of 42 children with ADHD will be recruited to participate in this three-arm school-based randomized controlled trial. An 8-week specially designed game-based HIIT (GameHIIT) program and a traditional game-based structured aerobic exercise (GameSAE) program will be delivered to those children randomly assigned to these two intervention groups, while the children in the control group will maintain their regular physical activity over the same period. A number of outcome measures including executive function, cerebral hemodynamic response, physical activity, physical fitness, and enjoyment and adherence to the intervention will be assessed for both groups at baseline (T0), immediately after the intervention period (T1), and after the follow-up period (T2).
Discussion: HIIT has recently emerged as a feasible and efficacious strategy for increasing physical health outcomes and cognitive function, including executive function, in healthy young people. However, research has yet to investigate whether the executive function of children with ADHD can be effectively enhanced through HIIT. If, as hypothesized, GameHIIT program improves outcomes for children with ADHD, the present research will inform the development of targeted exercise programs that can be more broadly used with this particular population.
Keywords: Special education need, Physical activity, fNIRS,
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Detailed Description
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Attention-deficit/hyperactivity disorder (ADHD) is a commonly diagnosed developmental disorder, with a 5.3% worldwide prevalence in children and adolescents. The most common symptoms include inattention, impulsivity, impaired inhibition, and hyperactivity. Also, young people with ADHD are often characterized by dysfunction in high-level cognitive functions such as executive function. This executive dysfunction may play an important role in the commonly observed behavioral problems in children with ADHD. There are a number of ways to treat ADHD, e.g., medication, psychotherapy, psychoeducation, neuro-feedback, behavior management, etc. Of these treatments, PA and exercise have emerged as effective strategies to manage ADHD given that neither are associated with negative side effects (see recent reviews. To summarize, although not always consistently, PA, especially moderate- to high-intensity aerobic exercise, may improve the emotion/mood, behavior, executive function, and some physical measures of children with ADHD. Acute aerobic exercise may have a positive effect on a variety of measures with a large effect size up to 1.26 in children with ADHD. Two studies have reported medium-to-large effects of acute exercise on executive function. Long-term exercise interventions have also been shown to benefit children with ADHD, with improvements in some measures showing a large effect size up to 0.96. However, these benefits have been mainly described as an improvement of behavioral and emotional problems. Several studies have reported that long-term 'mixed exercise programs' may have moderate to significant effects on several aspects of executive function (e.g., inhibition) and attention in children and adolescents with ADHD, but other studies did not report the same findings. Therefore, so far evidence-based suggestions regarding the optimal exercise for children with ADHD remain somewhat inconsistent.
Research into the relationship between PA and ADHD has generally involved mixed exercise programs at a low- to moderate-intensity; running and stationary cycling have been the most common exercise modes. Whether structured PA is effective for young people is yet to be examined. Children's habitual PA patterns are characterized by participation in games or "unpredictable" sports activities (e.g., football, basketball). Given that children's intrinsic motivation, or level of enjoyment, is also a strong predictor of PA participation, any intervention program should be designed to optimize their enjoyment of PA and thus enhance the likelihood of long-term adherence. When compared to structured exercises such as running or cycling, games-based PA arguably provides a more attractive, acceptable, sustainable, and enjoyable exercise model for young children. To date, only a few studies have examined the effect of an acute bout of team game-based activity on cognitive function in healthy children and adolescents. Research has found that different aspects of cognitive function, such as free recall memory, attention, executive function, and working memory are improved following an acute bout of game-based team exercise (e.g., basketball, tennis). For children with ADHD, mixed exercise protocols have generally been used in intervention programs, and only a few studies have used team sport-based games as part of their exercise intervention. However, given the design of these studies, it is not possible to distinguish the sole effect of game-based PA from those of the mixed exercise protocols in these studies. A recent study has reported that a 12-week table tennis exercise has positive effects on the gross motor skills and some of the executive function performances (mainly inhibition) in the ADHD training group, compared with the ADHD non-training group and a control group. It should be noted that the game-based PA in these aforementioned studies was generally 'aerobic' in nature and completed at low- to moderate intensities.
Recently high-intensity interval training (HIIT) has emerged as a feasible and efficacious strategy for improving the physical health of young people. The HIIT can be completed in a short period of time while resulting in equivalent physiological adaptations to longer sessions of traditional aerobic training. Recent research has suggested that traditional HIIT intervention programs, including running and cycling, may improve executive function in healthy children and adolescents. It has been suggested that a very brief HIIT intervention over two weeks reduced off-task behavior and enhanced selective attention in primary school children. For children with ADHD, to the best of our knowledge, only one recent study was conducted to investigate the effect of a traditional HIIT program on physical fitness, motor skills, social behavior, and quality of life. In this randomized controlled trial, 28 boys with ADHD were assigned to either a traditional HIIT group or a standard multimodal therapy (TRAD) group. After the three-week intervention, the authors reported that HIIT was more effective in improving motor skills, self-esteem, relations with friends, competence, and subjective ratings of attention, compared with TRAD. However, despite this encouraging preliminary evidence, it remains unclear whether HIIT can be adapted to treat children with ADHD to improve their executive function, a key aspect in many facets of life.
While the limited findings regarding the effects of HIIT on executive function are encouraging, and HIIT has emerged as an enjoyable and effective exercise for children, previous studies have tended to prescribe HIIT interventions with a focus on running and jumping. The effect of game-based HIIT interventions on the executive function of children has yet to be investigated. Research of this nature is needed, particularly to determine whether game-based HIIT can improve outcomes (e.g., executive function, social behavior, sports skills, etc.) for children with ADHD. Therefore, the aim of the proposed study is to investigate the effect of two different kinds of exercise programs, i.e., an 8-week game-based HIIT (GameHIIT) program and an 8-week game-based structured aerobic exercise (GameSAE) program, on the executive function of children with ADHD. The hypothesis of the proposed study is that both GameHIIT and GameSAE programs will significantly improve the executive function of children with ADHD, compared with those in the control group. A secondary hypothesis is that the GameHIIT group may confer additional benefits when compared with the GameSAE group.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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GameHIIT intervention group
In the GameHIIT group, a specially designed game-based training program with HIIT in nature will be delivered to the participants for 8 weeks.
Game-based High-Intensity Interval Training
There will be two training sessions each week. In each training session, there will be four sets of training programs separated by 3 minutes of passive recovery in accordance with a previous study.Each set of activities will last for around 5 minutes; therefore, the total duration of each training session will be approximately 30 minutes. A small group size (4-6 children per group) will be adopted to facilitate individual supervision and adaption of the exercise program.
GameSE intervention group
In the GameSAE group, participants will attend a tailor-made game-based exercise training program. Similar to GameHIIT, the intervention will comprise 8 weeks of structured aerobic exercise sessions, lasting one hour on average in each session and up to twice per week.
GameSAE
Similar to GameHIIT, the intervention will comprise 8 weeks of structured aerobic exercise sessions, lasting one hour on average in each session and up to twice per week. Six to eight stations of multidimensional exercises will be set up for each session. Adopting the train-the-trainer (TTT) model, training will be provided by front-line healthcare providers or trained helpers. Children will be instructed to finish the exercises in all stations one after another in a predetermined order.
Control group
No intervention.
No interventions assigned to this group
Interventions
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Game-based High-Intensity Interval Training
There will be two training sessions each week. In each training session, there will be four sets of training programs separated by 3 minutes of passive recovery in accordance with a previous study.Each set of activities will last for around 5 minutes; therefore, the total duration of each training session will be approximately 30 minutes. A small group size (4-6 children per group) will be adopted to facilitate individual supervision and adaption of the exercise program.
GameSAE
Similar to GameHIIT, the intervention will comprise 8 weeks of structured aerobic exercise sessions, lasting one hour on average in each session and up to twice per week. Six to eight stations of multidimensional exercises will be set up for each session. Adopting the train-the-trainer (TTT) model, training will be provided by front-line healthcare providers or trained helpers. Children will be instructed to finish the exercises in all stations one after another in a predetermined order.
Eligibility Criteria
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Inclusion Criteria
* Must be able to participate in physical activity
Exclusion Criteria
* Acute/chronic diseases that may affect engagement in physical activity
* A tendency to experience convulsions
6 Years
13 Years
ALL
No
Sponsors
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Education University of Hong Kong
OTHER
Responsible Party
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Principal Investigators
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Fenghua Sun, Dotcor
Role: STUDY_DIRECTOR
The Education University of Hong Kong
Locations
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The Education University of Hong Kong
Hong Kong, , Hong Kong
Countries
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References
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Other Identifiers
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EdUHK 18603120
Identifier Type: -
Identifier Source: org_study_id
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