Health Promotion in a Low-income Primary School: Children with and Without DCD Benefit, but Differently

Effectiveness of school-based physiotherapy intervention for children

PURPOSE

To evaluate the effectiveness of school-based physiotherapy interventions for improving students' participation in school settings.

METHOD

A systematic review was reported using PRISMA guidelines. Four databases were searched for studies investigating physiotherapy outcomes of school-based physiotherapy interventions in children. Studies were categorised by intervention type and evaluated based on evidence level and conduct.

RESULTS

Fifteen intervention types (23 studies) met criteria. Strong positive evidence supported treadmill training without bodyweight support (n = 1), and upper limb interventions (n = 2). Moderate positive evidence supported robotic-assisted gait training (n = 1), Gross Motor Activity Training with Multimodal Education-Based Therapy (GMAT + MET) (n = 2), neurodevelopmental treatment (n = 2), and rock climbing (n = 1). Weak positive evidence supported environmental modifications (n = 1), Ergonomic Health Literacy (n = 3), GMAT (n = 1), GMAT with progressive resistance exercise (GMAT-PRE) (n = 1), hippotherapy (n = 1), MET alone (n = 7), overground gait training (n = 2), treadmill training with partial body-weight support (n = 1), and non-immersive virtual reality (n = 3).

CONCLUSION

There is preliminary supporting evidence for a variety of school-based physiotherapy interventions which is consistent with evidence for interventions with established efficacy in other contexts. The evidence for interventions in school contexts alone is insufficient to guide current practice. Future research should specifically evaluate the effectiveness of physiotherapy approaches in school settings.

Finger counting to relieve working memory in children with developmental coordination disorder: Insights from behavioral and three-dimensional motion analyses

A limited number of studies have attempted to understand how motor deficits affect numerical abilities in children with developmental coordination disorder (DCD). The purpose of this study was to explore the functionality of finger-counting (FC) in children with DCD. The participants, 15 children with DCD and 15 typically developing (TD) children matched on school level and fluid reasoning abilities, were asked to use FC to solve an ordinal task with high working memory (WM) load. Behavioral measures supplemented with biomechanical measures, from three-dimensional motion analysis synchronized to a voice recording were used to assess children's performance and FC functionality (total duration, inter-finger [IF] transition, IF variance, finger/voice synchronization, and automatization of FC movements). Children with DCD were less accurate than TD children in using FC to solve ordinal problems with high WM load. This group difference could not be accounted for by poor FC skills given that FC movement turned out to be as functional in children with DCD as in their TD peers. When added to the model as a covariate, WM captured a greater proportion of intergroup variability than manual dexterity, further suggesting that their difficulties would be better accounted for by limited WM resources than by fine motor skills.

Children with developmental coordination disorders: a review of approaches to assessment and intervention

Developmental Coordination Disorder (DCD) is a neurodevelopmental disorder characterized by deficits in motor skills, with gross and fine motor dysfunction being the main symptom. This condition greatly impairs children's daily life, learning, and social interaction. Symptoms typically appear during preschool or school age, and if left untreated, they can persist into adulthood. Thus, early assessment and intervention are crucial to improve the prognosis. This study aims to review the existing literature on DCD, providing a comprehensive overview of the assessment for children with DCD in terms of body functions and structures, activities and participation, and environmental factors within the framework of the International Classification of Functioning, Disability, and Health - Children and Youth (ICF-CY). Additionally, specific rehabilitation interventions will be described, offering valuable insights for the clinical assessment and intervention of children with DCD.

Activities of daily living, self-efficacy and motor skill related fitness and the interrelation in children with moderate and severe Developmental Coordination Disorder

BACKGROUND

Children with Developmental Coordination Disorder (DCD) are diagnosed based on poor motor skills that impact their daily activities. However, this may also lead to lower predilection and participation in physical activities and a higher risk to develop health problems.

OBJECTIVE

To determine motor skill related levels in children with moderate and severe DCD and compare that to typically developing children (TD). The study also aimed to determine the level of activities of daily living (ADL) as reported by their parent and self-efficacy as reported by the children. Lastly, the relation of motor skill related fitness, ADL, and self-efficacy has been examined.

METHODS

A cross-sectional study has compared TD children (n = 105) and children with DCD (n = 109; 45 moderate DCD and 64 severe DCD) from elementary schools in Tunisia between 7 and 10 years of age. The DCDDaily-Questionnaire and Children's Self-perceptions of Adequacy in and Predilection for Physical Activity Questionnaire have been used to determine ADL and adequacy towards physical activity, respectively. The PERF-FIT has been used to measure motor skill related fitness levels.

RESULTS

Large group differences (p = 0.001) were found for ADL and all domains of self-efficacy between TD and DCD children. However, ADL and self-efficacy were not different between moderate and severe DCD. Motor skill related fitness was significantly lower (p = 0.01) for children with DCD than TD children, and between children with moderate and severe DCD. The relation between self-efficacy and DCDDaily-Q was different in the two DCD groups. Slow motor learning was associated with lower perceived enjoyment in physical education in the moderate DCD group, and with lower perceived adequacy in physical education in the severe DCD group.

CONCLUSIONS

Children with DCD participate and enjoy physical activity less than their peers. This combination of lower participation, lower predilection to physical activity and lowered motor skill-related fitness is a concern for the present and future health status of children with DCD.

Anthropometric, physical activity, and psychological characteristics of Korean adults with and without developmental coordination disorder (DCD)

Developmental Coordination Disorder (DCD), also known as Dyspraxia, is characterized by movement difficulties in individuals without discernible neurological disorders or identifiable medical conditions. Previous studies from various countries have highlighted disparities in anthropometric, physical activity, and psychological characteristics between children diagnosed with DCD and their typically developing (TD) peers. These differences are influenced by sociocultural norms and geographical locations. However, little attention has been given to scrutinizing analogous differences in adult populations, particularly within Republic of Korea. This study aims to address this knowledge gap by employing a battery of questionnaires to assess anthropometric, physical activity, and psychological traits in a cohort of 377 Korean adults, encompassing those with DCD (n = 54) alongside TD counterparts (n = 323). It was hypothesized that Korean adults with DCD would exhibit higher body mass index and lower ratings in physical activity and psychological characteristics than TD, consistent with the previous studies performed in other countries on children. The results showed no statistically significant differences between the DCD and TD groups in anthropometric characteristics such as weight (kg), height (cm), and body mass index. The prevalence of walking and biking for daily commuting in daily routines within Korean society might have contributed to the mitigation of anthropometric among individuals with/without DCD. Statistically significant differences were found in physical activity levels at work and recreational settings, as shown in physical activity scores and duration. The DCD group also displayed lower scores across several psychological characteristics, including exercise adherence, intrinsic motivation, self-efficacy, physical self-concept, exercise expectations, and intrinsic regulation. These findings underscore the necessity of incorporating sociocultural dynamics when investigating anthropometric, physical activity, and psychological characteristics in adults with DCD. Their perceived difficulties in fine motor skills were also significantly poor than TD. Future research studies are warranted to elucidate the underlying mechanisms driving the observed patterns in this study, thus contributing to a more nuanced comprehension of how DCD manifests within specific sociocultural contexts.

Social exercise interventions for children who have complex developmental needs: A systematic review

Exercise interventions are identified as effective treatments for children not meeting developmental milestones. This systematic review synthesizes research regarding exercise interventions that involved social participatory elements, for children with complex developmental needs. Academic Search Complete, CINAHL, Emcare, Proquest Theses and Dissertations, MEDLINE, and Google Scholar were searched systematically for relevant studies. Peer-reviewed studies meeting the review aim and published between 2000 and 2021 in English, were included. Methodological quality of 49 eligible studies (47 controlled trials, two mixed methods, total of 2355 participants) was appraised using the Mixed Methods Appraisal Tool. Narrative synthesis identified two groups of studies: Group 1 incorporated intentional social participatory elements; Group 2 likely involved incidental social participation. Most studies were of moderate to low methodological quality. Few measured impacts of interventions upon total physical activity levels. Short-term improvements in physical outcomes - particularly motor skills - were most frequently reported and were the main benefit of social exercise interventions for children with complex developmental needs, for which evidence exists. Further rigorous, longitudinal research is needed to assess social, psychological, and executive function outcomes of social exercise interventions in this population. Such interventions should incorporate booster sessions to provide children with greater opportunity to meet developmental milestones.

Effectiveness of CO-OP Approach for Children With Neurodevelopmental Disorders: A Systematic Review

Objective

To examine the scientific evidence regarding the effectiveness of the Cognitive Orientation to Daily Occupational Performance (CO-OP) approach for children with neurodevelopmental disorders (NDDs).

Data Sources

Selected articles published between January 2001 and September 2020 and listed in CINAHL, MEDLINE, and PsycINFO on the EBSCO platform, or found searching with Scopus, Google Scholar, OTseekern Central Register of Controlled Trials in the Cochrane Library, WHO International Clinical Trials Registry Platform, Turning Research into Practice, and ProQuest Dissertations and Theses. An update was performed in March 2022.

Study Selection

Eligibility criteria included studies that assessed the effectiveness of the CO-OP approach on children (0-18 years) with NDDs. Unpublished results were excluded, as well as research published in a language other than English or French.

Data Selection

The first 2 authors independently reviewed the titles, abstracts, and full texts. Discrepancies were discussed and resolved by consensus. Included studies were quality appraised using the PEDro-P scale or using the risk of bias scale in N-of-1 trials (RoBiNT) according to experimental design.

Data Synthesis

Results were reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Eighteen studies were initially included, with 2 additional studies added in the update. Three reached evidence level III (15%), 10 reached level IV (70%), and 5 reached level V (15%). All data collected on the activity-participation domain showed a significant improvement. Group therapy sessions show promising results for the improvement of activities or participation, as well as psychosocial dimensions such as self-esteem.

Conclusions

The scientific evidence analyzed shows that the CO-OP approach has a positive effect on children with NDDs, particularly in regard to their activities and participation. Future experimental studies should be designed in ways that allow determining effect sizes. Group therapy sessions appear relevant but require further research.

Underweight children are agile but lack power

Given the knowledge gap in literature on the impact of undernutrition on muscular power and agility in school-aged children, the aim of this study was to compare physical fitness in such underweight- and normal weight children. In this cross-sectional study, 853 children were included (459 boys; mean age: 9.2 (1.8) years). The children were grouped according to their BMI-for-age-and-sex: normal weight (− 1 ≤ z-score < 2) and underweight (z-score < − 1). Within the underweight group, three thinness subgroups were composed: grade 1 (− 2 ≤ z-score < − 1), grade 2 (− 3 ≤ z-score < − 2) and grade 3 (z-score < − 3). Their agility, muscular endurance and power were assessed with the Performance and Fitness test battery (PERF-FIT). Regardless the country they lived in, the underweight children showed better agility (p = 0.012) and muscular endurance (p = 0.004) than those with normal weight. They presented with lower muscular power than the normal weight group, shown by significantly shorter overhead throwing distances (p = 0.017) and less standing long jump peak power (p < 0.001). The standing long jump peak power decreased further with increasing thinness grade (p = 0.027).

Conclusion: Underweight children are more agile, but have lower muscular power compared to their normal weight peers. Its relationship with motor competence and physical activity, necessitates attention for tackling muscular strength deficiencies in these children, enabling them to meet the basic requirements for a healthy lifestyle later in life.

Pediatric care for children with developmental coordination disorder, can we do better?

This paper adopts a method of narrative critical review based on a non-systematic search of the literature to provide insights into the trends of developmental coordination disorder (DCD) treatment and to point out some future alternative approaches to prevent secondary health implications in children with DCD. The cause of DCD is unknown, but evidence suggests that these children have atypical brain structure and function. Interventions to help children cope with their activity limitations are effective in improving motor competence and motor skill related fitness in the short term. Although activity-orientated interventions can improve motor outcomes in children with DCD, high quality intervention trials and evaluation of long-term effects are urgently needed. Importantly, motor coordination problems associated with DCD extend to exercise-related activities leading to reduced participation in play and sports, which causes secondary problems in muscular fitness and body composition. Hence, treatment goals should not be limited to the improvement of motor skills (in ADL), but should also focus on health-related quality of life. We therefore propose when noticing motor problems in a child, already before enrolling but also during intervention, to explore ways to adapt everyday physical activities to optimally match the child's skill level. Hence, such activities will not only train the skills and improve physical fitness but will lead to positive engagement, thereby preventing the child from opting out of active play and sports. This provides the child with chances for exercise-dependent learning and will also positively impact social-emotional well-being.

A Scoping Review of Sport-Based Health Promotion Interventions With Youth in Africa

Africa has the highest rates of child mortality and diseases in the world. Research suggests that sport can be an effective way to enhance health knowledge and behaviors among at-risk youth in Africa. Scoping reviews explore both the breadth and depth of a research topic, which allows researchers to conduct a detailed analysis and synthesis of studies to understand how, why, and under what circumstances sport-based interventions are effective. The purpose of this scoping review was to specifically examine the study design, theoretical foundations, sample characteristics, measured and observed outcomes, intervention characteristics, and funding sources identified in previous studies that examined sport as a platform for health promotion with youth in Africa. A total of 916 articles were retrieved from 10 electronic bibliographic databases; 28 studies met the inclusion criteria. Of these, four were randomized controlled trials, while the remaining were open trials with pre-posttest assessments, both with comparison conditions and without. Only 10 studies included a theoretical framework to specifically inform the sport-based intervention implemented. Targeted health outcomes included knowledge and behaviors related to a myriad physical and mental health concerns, such as HIV, clean water use, vaccinations, physical activity, and fitness. Statistically significant improvements were observed in 82% of the studies examined. Our results suggest that sport-based interventions may be effective in improving health knowledge and behaviors among youth in Africa. Recommendations for future research, including methodology and the importance of global partnerships with nonprofit organizations, are discussed.

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder - Chinese (Mandarin) translation

目的

本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。

方法

本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际、多学科专家小组举行了两次会议，5个回合的Delphi 专家问卷调查，制定了高质量临床应用实践 (good clinical practice，GCP) 。

结果

本指南共制定35条建议。其中8条以文献综述为依据 (3 条涉及“评估”，5条涉及“干预”)； 22 条在 2012 年指南的基础上进行了更新；其他为涉及诊断、评估 (3条GCP) 及社会心理问题 (2 条 GCP) 的新建议。此外，其中有1条(LOE)新建议提出视频游戏可作为以活动和参与为导向的传统干预措施的辅助手段，并针对青少年和成人DCD提出了 2 条新建议 (1 条 GCP，1 条 LOE)。

结论

本指南是基于当前的研究证据和专家共识对DCD进行全面概述。它反映了不同学科临床和科研人员的最新科技水平。本国际指南可作为各国制定指南的基础。

Field-Based Tests of Strength and Anaerobic Capacity Used in Children With Developmental Coordination Disorder: A Systematic Review

OBJECTIVE

Children with developmental coordination disorder (DCD) are reported to have lower levels of strength and anaerobic capacity. The purpose of this study was to (1) identify field-based tests for strength and anaerobic capacity used in studies comparing children with DCD and children who were typically developing (TD), (2) examine the methodological quality of studies reporting psychometric properties and rate the psychometric properties of the examined test, and (3) summarize available evidence by combining the methodological quality of the studies and the quality of the psychometric properties of the test.

METHODS

An electronic search was conducted in July 2019 in 4 electronic databases. For purpose 1, primary studies were included with no exclusion of study design in which children aged 4 to 18 years with DCD were compared with children who were TD on strength and/or anaerobic capacity measures. For purpose 2, primary studies were included with no exclusion of study design in which a psychometric property was investigated. The Consensus-Based Standards for Selection of Health Measurement Instruments (COSMIN) was used to evaluate the methodological quality of the 34 studies and rate the psychometric properties of the tests used.

RESULTS

Hand-held dynamometer, bent knee push-up, vertical jump, standing long-jump, functional strength measurement, fitness test, and test battery can be recommended for TD, and the shuttle run item of the Bruininks-Oseretsky Test of Motor Proficiency-Second Edition and 10 m × 5 m sprints (straight and slalom) can be recommended for DCD.

CONCLUSION

Information regarding psychometric properties of field-based tests for strength and anaerobic capacity in children with DCD is lacking.

IMPACT

Information about the psychometric properties of field-based tests for strength and anaerobic capacity in children with DCD is lacking. More information is available on TD children, but it is also not complete; information regarding validity and responsiveness, especially, is missing. When using measures in children with DCD, it is important to keep in mind this lack of evidence for the validity and reliability of the outcomes for this target group.

Motor Performance in South African Children with Cystic Fibrosis

Aims: This study aimed to investigate motor performance in children with cystic fibrosis (CF) and the relationship with respiratory and anthropometric outcome measures.Methods: A cross-sectional exploratory study investigated 12 children with CF, mean (SD) age 6.17 (0.67) years, using the Movement Assessment Battery for Children 2nd edition (MABC-2), spirometry, body weight, height, body mass index, and age-related anthropomorphic z-scores.Results: MABC-2 total scores indicated 9/12 (75%) children performed below average (<50th percentile), of which 4/12 children (33.3%) had motor delay and 2/12 (16.7%) were at risk for motor delay. The balance subscale showed the lowest scores, with 5/12 (41.7%) participants performing at or below the 5th percentile and a median (IQR) percentile score of 9.00 (5.00-62.50). A significant negative correlation was found between the manual dexterity subscale and both height and height for age z-scores (p = 0.017 and p = 0.019, respectively), as well as peak expiratory flow in liter (p = 0.027). The balance subscale scores were positively correlated with forced expiratory volume in %predicted (p = 0.048). No other significant correlations were found.Conclusion: Children with CF may be at risk for delayed motor development, particularly their balance skills. Poor lung function might affect motor development but further research is recommended.

Expérimentation d’une formation sur le trouble développemental de la coordination destinée aux enseignants en éducation physique

Purpose: Best DCD practices include developing the ability of teachers to promote the participation of children in physical activities. The purpose of this study is to assess the impact of a one-day training session, including short lectures and workshops on developmental coordination disorder (DCD), on the perceptions that physical education teachers (PET) have of the knowledge, skills, and pedagogical practices. Methods: cohort study with a mixed pre-post-follow-up design that included a questionnaire before, immediately after, and three months after the training. Descriptive analyses, Wilcoxon tests, and a thematic analysis were performed. Results: 38, 35, and 22 PET respectively filled out the questionnaires at the three time-point. The perceptions of the knowledge, skills, and pedagogical practices of the PET were higher after the training compared to the initial perceptions (p < 0.006). At first, the PETs reported using certain general pedagogical strategies (e.g., modifying the task). After the training, the PETs gave more concrete examples and reported using new strategies (e.g., offering feedback after the task), which seems to have decreased behavioural problems. Conclusions: training can favourably modify the PETs' perceptions on their knowledge, skills, and practices. More research is necessary to assess the impact of the participation of children with a DCD.

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder

AIM

These international clinical practice recommendations (CPR) for developmental coordination disorder (DCD), initiated by the European Academy of Childhood Disability (EACD), aim to address key questions on the definition, diagnosis, assessment, intervention, and psychosocial aspects of DCD relevant for clinical practice.

METHOD

Key questions in five areas were considered through literature reviews and formal expert consensus. For recommendations based on evidence, literature searches on 'mechanisms', 'assessment', and 'intervention' were updated since the last recommendations in 2012. New searches were conducted for 'psychosocial issues' and 'adolescents/adults'. Evidence was rated according to the Oxford Centre for Evidence-Based Medicine (level of evidence [LOE] 1-4) and transferred into recommendations. For recommendations based on formal consensus, two meetings of an international, multidisciplinary expert panel were conducted with a further five Delphi rounds to develop good clinical practice (GCP) recommendations.

RESULTS

Thirty-five recommendations were made. Eight were based on the evidence from literature reviews (three on 'assessment', five on 'intervention'). Twenty-two were updated from the 2012 recommendations. New recommendations relate to diagnosis and assessment (two GCPs) and psychosocial issues (three GCPs). Additionally, one new recommendation (LOE) reflects active video games as adjuncts to more traditional activity-oriented and participation-oriented interventions, and two new recommendations (one GCP, one LOE) were made for adolescents and adults with DCD.

INTERPRETATION

The CPR-DCD is a comprehensive overview of DCD and current understanding based on research evidence and expert consensus. It reflects the state of the art for clinicians and scientists of varied disciplines. The international CPR-DCD may serve as a basis for national guidelines.

WHAT THIS PAPER ADDS

Updated international clinical practice guidelines on developmental coordination disorder (DCD). Refined and extended recommendations on clinical assessment and intervention for DCD. A critical synopsis of current research on mechanisms of DCD. A critical synopsis of psychosocial issues in DCD, with implications for clinical practice. The first international recommendations to consider adolescents and adults with DCD.

Psychometric properties of field-based anaerobic capacity tests in children with Developmental Coordination Disorder

Background: Assessment of anaerobic capacity in children with Developmental Coordination Disorder (DCD) is essential for treatment planning. However, available field-based measures have no established validity and reliability in this population. Purpose: To examine the psychometric properties of selected field-based anaerobic capacity tests in children with and without DCD. Methods: School-aged children (6-16 years) with and without DCD participated in the study. The children completed the shuttle run sub-item of the Bruninks-Oseretsky test of motor proficiency-second edition, the 10 × 5 m sprint tests (straight and slalom) and the muscle power sprint test (MPST). Results: The shuttle run test item of the Bruninks-Oseretsky test of motor proficiency-second edition and 10 × 5 m sprint tests possess good construct validity and test-retest reliability in children with DCD. The 10 × 5 m sprint test-slalom was found to be the most responsive test among children with DCD. However, the MPST was less reliable in children with DCD compared to their typically developing peers, leading to a very large Smallest Detectable Difference. Conclusions: The findings suggest that the selected anaerobic capacity measures have sound psychometric properties among children with DCD with the exception of the MPST. Clinicians working on children with DCD could use these tests in their practice, especially in situations where logistical resources are limited. Implications for Rehabilitation Field-based anaerobic capacity tests are suitable measures for assessing anaerobic capacity in children with Developmental Coordination Disorder, particularly in situations where laboratory assessments are not feasible. The shuttle run test item of the Bruninks-Oseretsky test of motor proficiency-second edition and the 10 × 5 sprint tests (straight and slalom) have good construct validity in this population. The 10 × 5 sprint test (slalom) is the most sensitive anaerobic capacity test among children with Developmental Coordination Disorder.

Evaluating the evidence for motor-based interventions in developmental coordination disorder: A systematic review and meta-analysis

BACKGROUND

As part of the process of creating an update of the clinical practice guidelines for developmental coordination disorder (DCD) (Blank, Smits-Engelsman, Polatajko, & Wilson, 2012), a systematic review of intervention studies, published since the last guidelines statement was conducted.

AIM

The aim of this study was to 1) systematically review the evidence published from January 2012 to February 2017 regarding the effectiveness of motor based interventions in individuals with DCD, 2) quantify treatment effects using a meta-analysis, 3) examine the available information on different aspects of delivery including use of group intervention, duration and frequency of therapy, and 4) identify gaps in the literature and make recommendations for future intervention research.

METHOD

An electronic search of 5 databases (PubMed, Embase, Pedro, Scopus and Cochrane) was conducted for studies that evaluated motor-based interventions to improve performance for individuals with DCD.

RESULTS

Thirty studies covering 25 datasets were included, 19 of which provided outcomes on standardized measures of motor performance. The overall effect size (Cohen's d) across intervention studies was large (1.06), but the range was wide: for 11 interventions, the observed effect was large (>0.80), in eight studies moderate (>0.50), and in five it was small or negligible (<0.50). Positive benefits were evident for activity-oriented approaches, body function-oriented combined with activities, active video games, and small group programs.

CONCLUSION

Results showed that activity-oriented and body function oriented interventions can have a positive effect on motor function and skills. However, given the varied methodological quality and the large confidence intervals of some studies, the results should be interpreted with caution.

Learning better by repetition or variation? Is transfer at odds with task specific training?

Objective

Transfer of motor skills is the ultimate goal of motor training in rehabilitation practice. In children with Developmental Coordination Disorder (DCD), very little is known about how skills are transferred from training situations to real life contexts. In this study we examined the influence of two types of practice on transfer of motor skills acquired in a virtual reality (VR) environment.

Method

One hundred and eleven children with DCD and their typically developing (TD) peers, aged 6–10 years (M = 8.0 SD = 1.0) were randomly assigned to either variable (n = 56) or repetitive practice (n = 55). Participants in the repetitive practice played the same exergame (ski slalom) twice weekly for 20 minutes, over a period of 5 weeks, while those in the variable group played 10 different games. Motor skills such as balance tasks (hopping), running and agility tasks, ball skills and functional activities were evaluated before and after 5 weeks of training.

Results

ANOVA repeated measures indicated that both DCD and TD children demonstrated transfer effects to real life skills with identical and non-identical elements at exactly the same rate, irrespective of the type of practice they were assigned to.

Conclusion

Based on these findings, we conclude that motor skills acquired in the VR environment, transfers to real world contexts in similar proportions for both TD and DCD children. The type of practice adopted does not seem to influence children’s ability to transfer skills acquired in an exergame to life situations but the number of identical elements does.

Variable training does not lead to better motor learning compared to repetitive training in children with and without DCD when exposed to active video games

BACKGROUND

Little is known about the influence of practice schedules on motor learning and skills transfer in children with and without developmental coordination disorder (DCD). Understanding how practice schedules affect motor learning is necessary for motor skills development and rehabilitation.

AIMS

The study investigated whether active video games (exergames) training delivered under variable practice led to better learning and transfer than repetitive practice.

METHODS AND PROCEDURES

111 children aged 6-10 years (M=8.0, SD=1.0) with no active exergaming experience were randomized to receive exergames training delivered under variable (Variable Game Group (VGG), n=56) or repetitive practice schedule (Repetitive Game Group (RGG), n=55). Half the participants were identified as DCD using the DSM-5 criteria, while the rest were typically developing (TD), age-matched children. Both groups participated in two 20min sessions per week for 5 weeks.

OUTCOMES AND RESULTS

Both participant groups (TD and DCD) improved equally well on game performance. There was no significant difference in positive transfer to balance tasks between practice schedules (Repetitive and Variable) and participant groups (TD and DCD).

CONCLUSIONS AND IMPLICATIONS

Children with and without DCD learn balance skills quite well when exposed to exergames. Gains in learning and transfer are similar regardless of the form of practice schedule employed.

WHAT THIS PAPER ADDS

This is the first paper to compare the effect of practice schedules on learning in children with DCD and those with typical development. No differences in motor learning were found between repetitive and variable practice schedules. When children with and without DCD spend the same amount of time on exergames, they do not show any differences in acquisition of motor skills. Transfer of motor skills is similar in children with and without DCD regardless of differences in practice schedules.

The effect of exergames on functional strength, anaerobic fitness, balance and agility in children with and without motor coordination difficulties living in low-income communities

Children with Developmental Coordination Disorder (DCD) are physically less active, preferring more sedentary behavior and are at risk of developing health problems or becoming overweight. 18 children (age 6-10years) with lower levels of motor coordination attending a primary school in a low-income community in South Africa (score on Movement Assessment Battery for Children Second edition equal to or below the 5th percentile) were selected to participate in the study and were age-matched with typically developing peers (TD). Both groups of children engaged in 20min of active Nintendo Wii Fit gaming on the balance board, twice a week for a period of five weeks. All children were tested before and after the intervention using the lower limb items of the Functional Strength Measurement, the 5×10 meter sprint test, the 5×10 meter slalom sprint test, and the Balance, Running speed and Agility subtest of the Bruininks Oseretsky Test of Motor Proficiency 2nd edition (BOT-2). After intervention, both groups of children improved in functional strength and anaerobic fitness. The magnitude of these changes was not related to participant's motor coordination level. However, differences in change between the TD and DCD group were apparent on the motor performance tests; children with DCD seemed to benefit more in balance skills of the BOT-2, while the TD children improved more in the Running speed and Agility component of the BOT-2. Compliance to the study protocol over 5weeks was high and the effect on physical functioning was shown on standardized measures of physical performance validated for children with and without DCD.

Reliability and Structural and Construct Validity of the Functional Strength Measurement in Children Aged 4 to 10 Years

BACKGROUND

Adequate muscle strength, power, and endurance are important in children's daily activities and sports. Various instruments have been developed for the assessment of muscle function; each measures different aspects. The Functional Strength Measurement (FSM) was developed to measure performance in activities in which strength is required.

OBJECTIVE

The study objective was to establish the test-retest reliability and structural and construct validity of the FSM.

DESIGN

A cross-sectional descriptive study was conducted.

METHODS

The performance of 474 children with typical development on the FSM was examined. Test-retest reliability (n=47) was calculated with the intraclass correlation coefficient (2.1A) for agreement. Structural validity was examined with exploratory factor analysis, and internal consistency was established with the Cronbach alpha. Construct validity was determined by calculating correlations between FSM scores and scores obtained with a handheld dynamometer (HHD) (n=252) (convergent validity) and between FSM scores and scores on the Movement Assessment Battery for Children-2 (MABC-2) (n=77) (discriminant validity).

RESULTS

The test-retest reliability of the FSM total score ranged from .91 to .94. The structural validity revealed one dimension, containing all 8 FSM items. The Cronbach alpha was .74. The convergent validity with the HHD ranged from .42 to .74. The discriminant validity with MABC-2 items revealed correlations that were generally lower than .39, and most of the correlations were not significant. Exploratory factor analysis of a combined data set (FSM, HHD, and MABC-2; n=77) revealed 2 factors: muscle strength/power and muscle endurance with an agility component.

LIMITATIONS

Discriminant validity was measured only in children aged 4 to 6 years.

CONCLUSIONS

The FSM, a norm-referenced test for measuring functional strength in children aged 4 to 10 years, has good test-retest reliability and good construct validity.