How do extra tasks affect walking in children with ADHD?

What core cognitive deficits has ADHD repeatedly been linked to, in addition to its three classic behavioral symptoms?

ADHD has been consistently linked to deficits in executive functions, which are critical top-down cognitive processes required for adaptive behavior planning.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What gross motor difficulties are frequently reported in school-aged children with ADHD?

Children with ADHD are often characterized as clumsy, have poor motor coordination, and show greater difficulties with both static and dynamic balance compared to typically developing peers.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

At what age do typically developing children reach a mature walking pattern, and how does gait continue to develop after this point?

Typically developing children achieve a mature walking pattern by about age 7, but gait variability parameters continue to refine and develop throughout later childhood.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What do previous instrumented gait studies consistently show regarding the walking patterns of children with ADHD off medication compared to controls?

Previous research consistently demonstrates that children with ADHD exhibit increased gait variability, while showing no differences in basic spatiotemporal gait parameters like walking velocity.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What is the functional implication of increased gait variability in a walking pattern?

Increased gait variability indicates a less regular and more inconsistent stepping pattern during walking.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

Why do dual-task situations alter children's walking performance, according to research?

Gait alterations under dual-task conditions indicate that the regulation of walking is not entirely automatic but instead relies on active cognitive processes.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

Which specific component of working memory is taxed when dividing attention between two tasks simultaneously?

The central executive is the supervisory system of working memory that is heavily taxed during dual-task paradigms where attention must be divided.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

Why are individuals with impaired executive functions expected to show greater dual-task interference on gait?

Impaired executive functions limit a person's ability to allocate sufficient attention to walking while concurrently managing a secondary task.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What was the main purpose of this study?

The study aimed to analyze the gait characteristics of school-aged children with and without ADHD during single-task walking versus dual-task conditions involving both a cognitive and a motor concurrent task.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What protocol was followed regarding the stimulant medication of children with ADHD in this study?

The 21 children with ADHD who were taking stimulant medication discontinued their treatment for at least 24 hours prior to the assessment.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What criteria were used to screen out participants with general intellectual disabilities or developmental coordination disorders (DCD)?

Children were excluded if they fell at or below the 16th percentile on the Movement Assessment Battery for Children (M-ABC 2) or had an IQ score of 70 or below on the WISC-IV.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

In single-task walking, which specific gait parameters differed significantly between children with ADHD and controls in this study?

Children with ADHD walked with significantly higher stride velocity variability, step length variability, and stride time variability compared to controls during single-task walking.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How did the researchers prevent acceleration and deceleration phases from confounding the GAITRite walking measurements?

They added a 1.25-meter non-recordable zone to both ends of the electronic walkway, ensuring only steady-state walking was analyzed.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How is gait variability mathematically calculated in this study's gait parameters?

It is calculated as the percentage coefficient of variation, determined by dividing the standard deviation by the mean and multiplying by 100.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI

What was the design of the cognitive concurrent task ('digits') used in the dual-task condition?

The cognitive task involved listening to a list of five randomized digits played over loudspeakers and subsequently recalling them.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What was the design of the motor concurrent task ('button') used in this study's dual-task condition?

The motor task required children to continuously unfasten and fasten a shirt button at stomach height, with performance measured by the frequency of completions.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What instructions were given to participants regarding whether they should focus more on walking or the concurrent task?

Participants were given no specific instructions regarding which task to prioritize during the dual-task walking trials.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How did dual-tasking affect spatiotemporal gait parameters (velocity, step length, stride length, stride time) for all children?

In both dual-task conditions, all children showed a decrease in velocity, step length, and stride length, alongside an increase in stride time.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How did the addition of a secondary task affect gait variability for the participants?

Gait variability measures increased significantly during both dual-task walking conditions compared to single-task walking.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

Did children with ADHD show more compromised dual-task walking patterns (e.g., higher variability) than typically developing controls?

No, there were no significant group differences or interaction effects in gait parameters during dual-task walking, meaning both groups adapted similarly.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How did the standing baseline (single-task) performance of the cognitive and motor tasks compare between the ADHD and control groups?

There were no significant differences between the groups; children with ADHD and controls performed similarly on both tasks while standing.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What group difference emerged in concurrent task performance during the dual-task (walking) conditions?

Controls recalled significantly more digits correctly while walking than children with ADHD, whereas there was no group difference in button-task performance.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What does the equivalent level of dual-task gait degradation in both groups tell us about walking in children?

It suggests that regardless of an ADHD diagnosis, walking is not fully automatic in children and relies on cognitive/executive resources.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI

How might the broad age range of 7 to 13 years have obscured potential group differences in dual-task walking?

Because children are still actively developing motor control and gait stability during this period, age-dependent variability in adapting to constraints could have masked differences between ADHD and control groups.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How does the 'maturational delay' theory of ADHD executive functions explain why dual-task gait differences might lessen in older cohorts?

Executive function differences between children with ADHD and controls are highly prominent in early childhood but tend to decrease towards adolescence as developmental delays resolve.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What is a major limitation of using a forward digit recall task to evaluate 'executive functions' in dual-task walking?

The forward digit span task is primarily a measure of short-term storage and recall rather than a complex executive task that requires information manipulation.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What statistical issue in the control group's dual-task digit recall performance may have obscured group differences?

A ceiling effect occurred because typically developing children scored very close to the maximum score of five digits, potentially masking differences in cognitive dual-task cost.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

Based on Wickens' multiple-resource model, why did the motor task (buttoning) disrupt walking more than the cognitive task?

The motor task competes directly with walking for overlapping sensory and motor processing channels (such as somatosensation and visual input).

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

How does excluding children with Developmental Coordination Disorder (DCD) affect the external validity of this study?

Since up to 47% of children with ADHD also meet DCD criteria, excluding them means these results cannot be generalized to individuals with comorbid motor disorders.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What phenotypic categorization of ADHD was not assessed in this study, leaving room for future subgroup analyses?

Participants were not classified or analyzed based on their specific ADHD subtypes.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified

What is the practical, real-world benefit of identifying how concurrent tasks alter children's gait?

Recognizing these dual-task limitations can help educators and parents design safer environments and activities to reduce interference and prevent accidental injuries.

Source: Gait in Children with Attention-Deficit Hyperactivity Disorder in a Dual-Task Paradigm · DOI · quote verified