Associations of Motor Performance and Executive Functions: Comparing Children with Down Syndrome to Chronological and Mental Age-Matched Controls

Background. Children with Down syndrome (DS) exhibit lower motor and cognitive performance than typically developing children (TD). Although there is a relationship between these two developmental domains, only a few studies have addressed this association in children with DS compared to groups of the same chronological age (CA) or mental age (MA) within one study. This study aimed to fill this research gap. Method and Procedures. The Movement Assessment Battery for Children-2 and the Trail-Making Test was used to assess motor and cognitive performances in 12 children (M = 10.5 ± 10.08) with DS, 12 CA-matched, and 12 MA-matched controls. Results. There are significant group differences in the motor dimension (total test score; p < 0.001, η2p = 0.734), for processing speed (p < 0.001, η2p = 0.396), and cognitive flexibility (p < 0.001, η2p = 0.498). Between TD-CA and both other groups, the differences in the magnitude of correlations for the motor dimension balance are also significant (compared to DS: z = −2.489; p = 0.006, and to TD-MA: z = −3.12; p < 0.001). Conclusions. Our results suggest that the relationships depend on the studied cognitive and motor skills. It seems crucial to select a wide range of tasks for both domains that are as isolated as possible for future studies, to better understand the relationships between cognitive and motor skills in children with DS.

MOVEMENT ASSESSMENT BATTERY FOR CHILDREN-SECOND EDITION: THEORETICAL ADEQUACY OF A MOTOR ASSESSMENT INSTRUMENT

ABSTRACT Objective: To investigate the adequacy of the theoretical model of the Movement Assessment Battery for Children-Second Edition (MABC-2) instrument. Methods: 582 children, of both sexes, aged between 3 and 5 years and residents in the city of Maringá (state of Paraná, Southern Brazil) participated in the study. Data were collected from May/2014 to June/2015 and analyzed using descriptive and inferential statistics. Results: The evidence obtained from exploratory factor analysis indicated the presence of two factors, which was the option that best fitted the explanatory model. Hence, it was necessary to regroup the motor tasks of the dimensions “Aiming & catching” and “Balance” into only one dimension. It is noteworthy that the “Bicycle trail” motor task did not fit the model, as it presented a low and negative factor load in the analyzed dimensions. In the confirmatory factor analysis, adequate adjustment indices were observed for the tested model, which confirmed the non-classification of the “Bicycle trail” motor task in the original dimension. Conclusions: After removing the “Bicycle trail” motor task, the adjusted two-factor model seems to be the most appropriate to assess the motor performance of children participating in the study.

The Relationships between Sibling Characteristics and Motor Performance in 3- to 5-Year-Old Typically Developing Children

Siblings have been hypothesized to positively impact the motor performance of children by acting as examples and by providing a safe environment, but they may also negatively impact motor performance because they could compete for the parent’s time and care. Therefore, this study investigates the relationship between several sibling characteristics and motor performance in 3- to 5-year-old children. The sample consisted of 205 3- to 5-year-old children (mean age 50.9 ± 10.0 months, 52.2% boys). The Movement Assessment Battery for Children-2 was used to measure motor performance. The sibling variable was operationalized as the number of siblings present, the age difference between a child and its siblings, and the birth order position of a child. The confounding variables that were taken into account were the age, sex, and behavioral problems of the child and maternal education level. None of the investigated sibling variables were related to the total motor performance of a child after controlling for possible confounding variables. The absence of any associations between the sibling variables and motor performance might be explained by the characteristics of the study sample, the possibility that there is no linear relationship, or the presence of still unknown moderating or mediating factors.

Recognizing Full-Body Exercise Execution Errors Using the Teslasuit

Regular physical exercise is essential for overall health; however, it is also crucial to mitigate the probability of injuries due to incorrect exercise executions. Existing health or fitness applications often neglect accurate full-body motion recognition and focus on a single body part. Furthermore, they often detect only specific errors or provide feedback first after the execution. This lack raises the necessity for the automated detection of full-body execution errors in real-time to assist users in correcting motor skills. To address this challenge, we propose a method for movement assessment using a full-body haptic motion capture suit. We train probabilistic movement models using the data of 10 inertial sensors to detect exercise execution errors. Additionally, we provide haptic feedback, employing transcutaneous electrical nerve stimulation immediately, as soon as an error occurs, to correct the movements. The results based on a dataset collected from 15 subjects show that our approach can detect severe movement execution errors directly during the workout and provide haptic feedback at respective body locations. These results suggest that a haptic full-body motion capture suit, such as the Teslasuit, is promising for movement assessment and can give appropriate haptic feedback to the users so that they can improve their movements.

A Ten-Week Motor Skills Training Program Increases Motor Competence in Children with Developmental Coordination Disorder

The present study aimed to investigate the effect of a motor skills training program in children with DCD considering their gender. The Movement Assessment Battery for Children (MABC-2) classified the children and assessed their skill changes over time. The study was implemented at four kindergartens in the Khorezm region of Uzbekistan. In the study, all the children suffered from DCD (5.17 ± 0.70 years; 10 girls), and all the indicators of MABC-2 were less than 16%. The participants were divided into an experimental group (n = 17), receiving ten weeks of motor skills training program for 45 min twice per week; and a control group (n = 7), which proceeded with exercises of everyday living. The ANCOVA showed differences between the groups in the post-test concerning each domain: manual dexterity (F (1, 20) = 18.703, p < 0.001; η2 = 0.471); aiming and catching (F (1, 20) = 9.734, p = 0.005; η2 = 0.317); balance (F (1, 20) = 35.140, p = 0.000; η2 = 0.626); and total MABC-2 test score (F (1, 20) = 66.093, p < 0.001; η2 = 0.759), with all the children in the EG exhibiting better results. The Wilcoxon test revealed statistically significant differences for the EG between moments for all the variables (p < 0.001) but not for the CG (p > 0.050). The effectiveness of the intervention program was similar across both genders. The study suggests that a 10 week motor skills training program can increase the quality of children’s motor competence and represent a valuable procedure for physical education specialists to enhance motor competence for children with DCD.

The Comparison of Three Assessment Scales in a Neonatal Unit in Poland

The aim of this study was to analyse the relationship between the following three assessments: the Neonatal Behavioral Assessment Scale (NBAS), the Alberta Infant Motor Scale (AIMS), and the General Movement Assessment (GMA). 29 patients from the neonatal unit of the Gynecology and Obstetrics Clinical Hospital were examined. The study was conducted between feedings by a person properly trained in the use of the NBAS, the AIMS, and the GMA. The average postmenstrual age of the examined newborns was 35.6 weeks. The average week of gestation was the 29th, the average birth weight was 1469 g, and the Median Apgar score in the fifth minute of life was 7. A relationship was found between the AIMS and the NBAS. It was concluded that the Neonatal Behavioral Assessment Scale and the Alberta Infant Motor Scale may be used to determine the motor development of preterm infants. Moreover, it is advisable to use more than one assessment method in order to adjust the intervention.

Comparison of CSV-1000 and Metrovision contrast sensitivity tests in normal eyes

Background: Measuring contrast sensitivity (CS) allows a better understanding of the visual performance of the human eye. This study aimed to examine the correlation and agreement between the results of two sinewave grating-based CS measurement methods, Metrovision and CSV-1000, in normal eyes. Methods: This cross-sectional, comparative study was performed between December 2018 and April 2019, at an optometry clinic. Subjects underwent comprehensive ocular examinations, which included pupil reflexes, subjective refraction, external eye examinations, smooth pursuit eye movement assessment, the cover–uncover test, and detailed slit-lamp examination of the anterior and posterior segments. Metrovision and CSV-1000 were employed to assess CS under photopic conditions. The correlation and agreement of the results of the two tests were evaluated. Results: CS was measured for 104 normal eyes for 3, 6, 12, and 18 cycles per degree (cpd) spatial frequencies (participants’ mean age ± standard deviation: 37.3 ± 26.4 years). The CSV-1000 measurements were significantly higher for the 3 and 6 cpd spatial frequencies (both P = 0.01); however, at higher spatial frequencies, CS scores were similar. The highest and lowest differences between the two tests were recorded for the 3 cpd spatial frequency and 18 cpd spatial frequency, respectively. Except for the 3 cpd spatial frequency, in both eyes, the findings correlated significantly between the CSV-1000 and Metrovision (P < 0.05). The narrowest and widest limits of agreement between the two tests were found for the 12 and 3 cpd spatial frequencies, respectively. Conclusions: The CSV-1000 method estimated CS higher than the Metrovision method, mostly at lower spatial frequencies. Furthermore, the agreement between the two methods was greater at higher spatial frequencies than at lower frequencies. This should be kept in mind when using the two methods interchangeably in visual screening.

Inter- and Intra-observer Reliability of the “assessment of Motor Repertoire- 3 to 5 Months” Based on Video Recordings of Infants With PWS

BackgroundThe “Assessment of Motor Repertoire - 3 to 5 Months”, which is part of Prechtl's General Movement Assessment (GMA), has been gradually applied to infants with genetic metabolic disorders. However, there still have been no studies on the application of GMA for infants with Prader-Williams Syndrome (PWS).Aimsthe purpose of this study was to determine inter- and intra-observer reliability of the assessment tool in PWS population.Study designReliability and agreement study.SubjectsThis was a cross-sectional study of 15 infants with PWS born at average gestational age 38 weeks.Outcome measuresStandardized video recordings of 15 infants with PWS (corrected ages 3 to 5 months) were independently assessed by three observers. Kappa and ICC statistics were applied in inter- and intra-observer reliability analysis.ResultsThe overall reliability ICCs values of “Motor Optimality Score” (MOS) ranged from 0.84 to 0.98 and the regarding pairwise agreement ranged between 0.86 and 0.95 in inter- observe reliability. In addition, ICC values for MOS ranged between 0.95 and 0.98 for respectively testers agreement in intra-observer reliability.The complete agreement reliability (100%) was achieved in subcategories of “Fidgety Movements” and “Movement Character” for the inter- and intra-observer. Moderate to high inter- and intra-observer reliability were found in subcategories of “Repertoire of Co-Existent Other Movements”, “Quality of Other Movements” and “Posture”, with kappa values ranging between 0.63 and 1.00. Conclusionhere were high levels of inter-and intra-observer agreement in the “Assessment of Motor Repertoire - 3 to 5 Months” for infants with PWS. It will be possible to carry out standardized quantitative assessment on the motor performance infants with PWS.

Motor Ability and Mental Health of Young Children: A Longitudinal Study

This study used a longitudinal method to investigate relations between motor abilities and mental health in young children. We analyzed longitudinal data of 38 Japanese children who were 3–6 years old. We administered the Movement Assessment Battery for Children–Second edition (MABC2) and Strength and Difficulties Questionnaire (SDQ) at 3–4 years and 5–6 years of age: MABC2 was used to evaluate each child’s motor ability; SDQ was used to assess the degree of their mental health difficulties and prosocial behavior. Logistic regression results indicated that the MABC2 score at 3–4 years can predict the risk of motor skill impairments at 5–6 years (adjusted odds ratio was 0.354). Motor ability assessed at 3–4 years, however, did not predict the risk of mental health problems at 5–6 years. Analyses of longitudinal quantitative changes in motor ability and mental health confirmed these results. Mental health problems that occurred at 5–6 years were related only to individual SDQ score differences at 3–4 years. The MABC2 total score at 3–4 years was not related to later prosocial behavior. Boys tended to obtain a lower MABC2 score at 5–6 years. Girls tended to obtain a higher SDQ prosocial score at 5–6 years. Results of this study suggest that motor skill impairment and SDQ-measured mental health are independent characteristics in young Japanese children aged 3–6 years.

Transtorno do Desenvolvimento da Coordenação: desconhecido por pais e professores

Resumo O estudo teve como objetivo analisar dificuldades de aprendizagem sob a perspectiva dos transtornos das habilidades motoras, a partir da percepção de pais e de professores considerando o comportamento motor, emocional, acadêmico e atividades diárias de crianças com provável Transtorno do Desenvolvimento da Coordenação (TDC). Participaram 42 pais, 32 professores e 42 pré-escolares. Como instrumentos foram utilizados o Movement Assessment Battery for Children-2 (MABC-2) e questionários de percepção dos pais e dos professores sobre o desenvolvimento da criança. Os dados foram analisados usando o teste Shapiro Wilk, Wilcoxon, “U” de Mann-Whitney e Regressão Logística Binária. Os resultados demonstraram que professores percebem melhor as dificuldades nas habilidades motoras das crianças com persistência do TDC (pTDC) ou variação do TDC (vTDC) e percebem melhor as dificuldades emocionais, acadêmicas e de atividades diárias. Conclui-se que os professores percebem melhor as dificuldades apresentadas por crianças com pTDC e a variação no diagnóstico do transtorno interfere na percepção da dificuldade motora das crianças.