Motor Development-3rd Edition Research Articles

Assessing the Fundamental Movement Skills of Children With Intellectual Disabilities in the Special Olympics Young Athletes Program.

Mastering the ability to move proficiently from a young age is an important contributor to lifelong physical activity participation. This study examined fundamental movement skill (FMS) proficiency in children with intellectual disabilities (n = 96, 60% boys, age 5-12years) and typically developing children (n = 96, 60% boys, age 5-12years). Participants were assessed using the Test of Gross Motor Development-3rd edition and balance subtest from the Bruininks-Oseretsky Test of Motor Proficiency 2. The FMS proficiency of typically developing children including mastery/near mastery level (combined variable representing mastery, which is achieving all criteria for the skill, over both trials and near mastery, wherein a participant performs all but one of the components of the skill correctly) was significantly higher than for children with intellectual disabilities. A similar observation was made with multiple linear regression analysis testing the interaction effect of participant group and age/gender on all three FMS subcomponents. The results presented will help establish a baseline of FMS proficiency and guidelines for future intervention for children with intellectual disabilities.

A57: A Study on the Correlation Between Basic Motor Skills and Attention, Parent-Child Relationship and Behavior

Purpose: In the Curriculum Standards of Physical Education and Health for Compulsory Education (2022 Edition) newly issued by China in 2022, basic motor skills are included in the curriculum, requiring students to learn, practice and experience mobility skills, control skills, manipulative skills, and other basic motor skills. The purpose of this study is to explore the correlation between basic motor skills and pupils' attention, parent-child relationship, and behavior, and to provide a theoretical basis for its further implementation. Methods: In this study, 45 primary school students from Malu Primary School, Jiading District, Shanghai, with an average age of 9.76 years old were randomly selected, including 36 male students and 9 female students. Their parents all signed informed consent. All 45 participants participated in the test of gross motor development-3rd edition (TGMD-3), and 30 parents completed the Achenbach’s Child Behavior Checklist (CBCL), 34 subjects filled in the Family Parent-Child Relationship Scale (PCRT), and 31 subjects conducted the d2 Test of Attention. SPSS was used to analyze the correlation between the test scores of basic motor skills and the attention, parent-child relationship, and behavior. Results: Pearson correlation analysis showed that elementary school students' basic motor skills and attention were moderately correlated (r mobility skills and error of omission =-0.406, P < 0.05, r mobility skills and total error =-0.358, P < 0.05, r control skills and error of omission =-0.428, r control skill and total error =-0.490, P < 0.01, r control skill and correct mark =0.403, P < 0.05, r motor skill total score and error omission =-0.454, P < 0.01, r motor skill total score and total error =-0.468, P < 0.01, r motor skill total score and correct mark =0.379; The basic motor skills of primary school students were moderately correlated with ambivalence parent-child relationship (r control skills and marker correct =-0.390, P < 0.05, r motor skill total and marker correct =-0.391, P < 0.05). There was a high correlation between the manipulative skills and the hyperactive behaviors of the girls in primary school (r=0.917, P < 0.05). Conclusion: The results show that primary school students' basic motor skills and attention, parent-child relationship and behavior have a certain correlation, among which the correlation of control skills is more prominent.

Exploring the motor skill proficiency barrier among children with intellectual disabilities: Analysis at a behavioural component level.

Models of childhood motor development began to emerge in the 1960's. Since then, numerous models have proposed the importance of obtaining a proficient level of fundamental movement skill (FMS) competence during childhood and deemed it to be critical for participation in lifelong sports and physical activity. This study examined FMS at the behavioural component level in children with intellectual disabilities (CwID) (n = 100, 60% boys, aged 5-12 years). Participants were assessed using the Test of Gross Motor Development 3rd edition (TGMD-3) and the balance subtest from Bruininks-Oseretsky Test of Motor Proficiency 2 (BOT-2). For the whole sample, 0% participants mastered all 10 FMS, 1% (n = 1) participants mastered all 4 locomotor skills while 0% (n = 100) participants mastered all ball skills. A multiple regression was carried out to investigate whether the interaction of gender and age was a predictor of FMS proficiency. Linear regressions were also carried out to investigate whether gender or age was a predictor of FMS proficiency. The results presented will help to identify weaknesses in skills at the behavioural component level and will enable researchers and practitioners to address low levels of motor skill proficiency among CwID.

Influence of different caregiving styles on fundamental movement skills among children.

This study investigated the influence of parenting and grandparenting caregiving styles on fundamental motor skills (FMS) of preschool children. A total of 1,326 preschool children (698 boys, 628 girls) aged 4-6 years were recruited from the kindergartens of Jinhua City, China. Locomotor skills (LM), ball skills (BS), and total fundamental movement skills (TS) of children were assessed by the Test of Gross Motor Development-3rd edition (TGMD-3). There were 978 children in parenting and 348 children in grandparenting caregiving styles. The LM, BS and TS scores of children were considerably (p < 0.001) increased with age (irrespective of sex or caregiving style). For the sex comparisons, BS scores of boys were significantly higher than girls (p < 0.001), while LM and TS scores were not different between boys and girls. For the caregiving style comparison, parenting is superior to grandparenting in developing of children's FMS. Parenting boys of 4-, 5-, and 6-years old showed better BS compared to age-matched parenting girls, whereas boys of 5-years old in grandparenting only showed better BS compared to same-age grandparenting girls (p < 0.05). Furthermore, parenting boys of 6-years reported higher LM (p < 0.01), BS (p < 0.001), and TS (p < 0.001) scores compared to grandparenting boys, but girls' FMS at all ages were not significantly different between the caregiving styles. Parenting caregiving style is positively associated with proper development of FMS among children. Girl children with poor FMS in grandparenting may need a special care or intervention programs to promote their FMS.

Trust the “Process”? When Fundamental Motor Skill Scores are Reliably Unreliable

ABSTRACT The typical process for assessing inter-rater reliability is facilitated by training raters within a research team. Lacking is an understanding if inter-rater reliability scores between research teams demonstrate adequate reliability. This study examined inter-rater reliability between 16 researchers who assessed fundamental motor skills using the Test of Gross Motor Development-3rd edition. Total score agreement (ICC = 0.363) and locomotor subscale agreement (ICC = 0.383) were “very poor,” while ball skills subscale agreement (ICC = 0.478) was “poor.” Consistencies of total (ICC = 0.757), locomotor (ICC = 0.730), and ball skills (ICC = 0.746) scores were “fair.” Component percentage agreement ranged from 40.5% to 96.2%. These data suggest that there are significant differences in how different research groups evaluate fundamental motor skills based on the subjective nature of scoring. Consistency and agreement among users need to be addressed in motor development research to allow for direct comparisons across studies that use process-oriented measures.

Do our movement skills impact our cognitive skills? Exploring the relationship between cognitive function and fundamental movement skills in primary school children.

The literature suggests that there is a relationship between motor function and cognitive development however, few studies have explored the specific role of Functional Movement Skills on cognitive function. This research aimed to determine if Functional Movement Skills predict cognitive function, when accounting for confounding factors, in a sample of primary school children in Ireland. Cross-sectional. Sixty primary school children (51.7 % girls, age range 7-12 years, mean age 9.9 ± 1.28) were assessed in their Functional Movement Skill proficiency using the Test of Gross Motor Development-3rd Edition and a subtest of the Bruininks-Oseretsky Test of Motor Proficiency 2 Short Form (to assess balance). Participants also completed a series of cognitive tests which formed part of the Cambridge Neuropsychological Test Automated Battery. A series of hierarchical regression analyses were conducted whilst controlling for covariates (Age; Gender; Socio Economic Status). Attention Switching, Reaction Time, and Emotional Recognition were found to be associated with Overall Functional Movement Skills (Locomotor, Object Control, Stability). Overall Functional Movement Skills significantly accounted for 4.7 % of the variance in Simple Reaction Time (ΔR2 = 0.032; p = 0.13) whilst Stability significantly accounted for 5.5 % (ΔR2 = 0.055; p = 0.04) and 12.9 % (ΔR2 = 0.129; p = 0.00) of the variance in Simple Reaction Time and Emotional Recognition, respectively, after controlling for covariates. Overall Functional Movement Skills may be more related to reaction time than attention and spatial working memory, whilst stability may be more associated with emotional recognition. Further research is warranted. Greater comprehension of the impact of Functional Movement Skills on cognitive function in children can contribute to the development of more effective and efficient physical activity programmes, which can in turn contribute to and promote holistic child development.

Physical literacy in children: Exploring the construct validity of a multidimensional physical literacy construct

Physical literacy (PL) is highlighted as a construct that can positively impact physical activity (PA). Measurement methods and definitions for PL exist, but vary between research groups. This variation affects the ability to compare research findings. The purpose of this study was to assess the construct validity of PL in children. PL was operationalised according to Whitehead’s (2001 ) definition, comprising confidence, motivation, physical competence, and knowledge and understanding. Participants ( n = 1073; mean age 10.86 ± 1.20 years: 53% male) were measured on: (i) confidence (Physical Activity Self-Efficacy Scale; Bartholomew et al., 2006 ), (ii) motivation (Behavioural Regulation in Exercise-Adapted; Sebire et al., 2013 ), (iii) physical competence (health-related fitness: 20 m shuttle run, back-saver sit-and-reach, handgrip strength, plank); balance (Bruininks-Oseretsky Test of Motor Proficiency 2; Bruininks, 2005 ); object-control and locomotor skills (Test of Gross Motor Development-3rd edition (TGMD-3); Ulrich, 2016 ); and (iv) knowledge and understanding (PA and sedentary guidelines). Confirmatory factor analysis (CFA) was conducted to analyse the factor structure of PL. The best-fitting model (χ2 = 209.8, df = 99, p &lt; 0.001; comparative fit index = 0.95, normed fit index = 0.91, Tucker–Lewis index = 0.93, root mean square error of approximation = 0.032, 95% confidence interval: 0.026–0.038) was a three-component model containing the domains of motivation, confidence, and physical competence. The knowledge and understanding domain did not fit the model well. Factor loadings were highest for confidence and motivation. Findings support the adoption of a pragmatic approach to PL measurement. CFA results indicated a similar factor structure as has been identified in other studies which have used different tools to measure PL domains.

ASSESSMENT OF FUNDAMENTAL MOTOR SKILLS IN BOYS AND GIRLS

The aim of the study was to assess gross motor skills between boys and girls of preschool and primary school age. The study included a total sample of 83 respondents (49.3% boys) with an average chronological age of 6.14 ± 2.25 years. The Test of Gross Motor Development–3rd Edition (TGMD-3) was used to verify the set research goal. Research data were analyzed by the method of parametrical statistics. To determine the differences in gross motor skills between boys and girls, t-test was used for an independent sample of respondents. Based on the obtained research results, it can be concluded that there are no statistically significant differences between boys and girls on the locomotor and “Ball skills” subtest. Although no statistically significant differences were recorded, generally, boys achieve better results on the subtest “Ball skills” compared to girls. It is suggested that intervention programs be designed to improve girls' performance in ball skills. Key words: Children, TGMD-3, Locomotor, Ball skills, Gender.

Active Video Games Improve Muscular Fitness and Motor Skills in Children with Overweight or Obesity.

(1) Background: Childhood obesity is an important public health problem. Children with overweight or obesity often tend to show the pediatric inactivity triad components; these involve exercise deficit disorder, pediatric dynapenia, and physical illiteracy. The aim of the study was to examine the influence of an active video games (AVG) intervention combined with multicomponent exercise on muscular fitness, physical activity (PA), and motor skills in children with overweight or obesity. (2) Methods: A total of 29 (13 girls) children (10.07 ± 0.84 years) with overweight or obesity were randomly allocated in the intervention group (AVG group; n = 21) or in the control group (CG; n = 8). The intervention group performed a 5-month AVG training using the Xbox 360® with the Kinect, the Nintendo Wii®, dance mats, and the BKOOL® interactive cycling simulator, combined with multicomponent exercise, performing three sessions per week. The control group continued their daily activities without modification. Weight, PA using accelerometers, and motor competence using the Test of Gross Motor Development 3rd edition were measured. Muscular fitness was evaluated through the Counter Movement Jump height, maximal isometric strength of knee extension and handgrip strength, and lean mass using Dual-energy X-ray Absorptiometry. Mann–Whitney U and Wilcoxon signed rank tests were performed. The biserial correlation coefficients (r) were calculated. Spearman’s correlation coefficients among PA, muscular fitness, and motor competence variables were also calculated. (3) Results: The AVG group significantly increased their knee extension maximal isometric strength (4.22 kg; p < 0.01), handgrip strength (1.93 kg; p < 0.01), and jump height (1.60 cm; p < 0.01), while the control group only increased the knee extension maximal isometric strength (3.15 kg; p < 0.01). The AVG group improved motor competence and light physical activity (p < 0.05) and decreased sedentary time (p < 0.05). Lean mass improved in both AVG group and CG (p < 0.05). Lastly, the percentage of improvement of motor skills positively correlated with the percentage of improvement in vigorous PA (r = 0.673; p = 0.003) and the percentage of improvement in CMJ (r = 0.466; p = 0.039). (4) Conclusions: A 5-month intervention combining AVG with multicomponent training seems to have positive effects on muscle fitness, motor competence, and PA in children with overweight or obesity.

TGMD-3 short version: Evidence of validity and associations with sex in Irish children

ABSTRACT This study examined the internal structure and evidence of validity of the Test of Gross Motor Development 3rd edition (TGMD-3) in primary school aged children. Participants (n = 1608, 47% girls, age range 5–11 years, mean age 9.2 ± 2.04) were recruited from Irish schools across twelve counties (56% rural, 44% urban). The TGMD-3 was used to measure FMS proficiency (Ulrich, 2020). A two-factor model (13 skills) was used and confirmatory indexes were calculated. The Bayesian criteria and the Composite Reliability were employed to evaluate alternative models. Relationships between the final model proposed with age, sex and BMI were calculated using a network analysis. Mplus 8.0 and Rstudio were used. A two-factor model (locomotion and object control) with adequate values (> 0.30) for the seven skills (gallop, hop, jump, two-hand strike, bounce, catch, overhand throw) presented excellent indexes. The skills with the highest indicator of strength centrality in the network were bounce and catch for both boys and girls and hop for boys and horizontal jump for girls. This study evidences the validity and reliability of the internal structure of the TGMD-3 and demonstrates that a short version of the TGMD-3, comprising seven skills is a valid measure of FMS in this population.

Crosstalk between Gross and Fine Motor Domains during Late Childhood: The Influence of Gross Motor Training on Fine Motor Performances in Primary School Children.

Gross and fine motor competence have a close relationship during development and are shown to correlate to some extent. However, the study of the interaction between these domains still requires further insights. In this study, we investigated the developmental changes in overall motor skills as well as the effects of gross motor training programs on fine motor skills in children (aged 6–11, n = 240). Fine motor skills were assessed before and after gross motor intervention using the Box and Block Test. The gross motor intervention was based on the Test of Gross Motor Development—3rd Edition. Results showed that gross and fine motor skills correlate across all years of primary school, both significantly improving with age. Finally, the gross motor intervention appeared to not influence fine motor skills. Our findings show that during primary school age, overall motor development is continuous, but non-linear. From age nine onward, there seems to be a major step-up in overall motor competence, of which teachers/educators should be aware of in order to design motor educational programs accordingly. While gross and fine motor domains might be functionally integrated to enhance children’s motor performances, further research is needed to clarify the effect of gross motor practice on fine motor performances.

Perceived Physical Competence Predicts Gains in Children's Locomotor but Not Ball Skills across an Intervention.

The purpose of this pre/post experimental study was to examine if children’s perceived physical competence predicted changes in motor skills across an intervention. Sixty-seven children (Mage = 53.2 ± 3.7 months) participated in a 16-week, mastery-climate motor skill intervention. Perceived physical competence was assessed before the intervention using the physical competence subscale of the Pictorial Scale of Perceived Competence and Social Acceptance for Young Children. Motor skills were assessed using the Test of Gross Motor Development-3rd Edition before and after the intervention. Results revealed that controlling for pretest skills, perceived physical competence significantly predicted posttest locomotor (p < 0.05) and total skills (p < 0.05) but did not predict posttest ball skills (p > 0.05). These results indicate that perceived physical competence may be a significant factor that predicts children’s gains in locomotor or total skills, but not ball skills, across an intervention.

The A + FMS cluster randomized controlled trial: An assessment-based intervention on fundamental movement skills and psychosocial outcomes in primary schoolchildren

ObjectivesTo evaluate the effectiveness of an assessment-based intervention that emphasizes fun, mastery, and support (A+FMS) on primary schoolchildren’s fundamental movement skills (FMS), perceptions of physical and movement skill competence, teacher support and enjoyment. DesignCluster randomized controlled trial. MethodsTen clusters (classes) (n=282; mean age 8.4 years, SD 0.56) were randomised to the A+FMS or wait-list control group in a 1:1 ratio. Teachers in the A+FMS group were required to attend six hours of training and integrate 550min of assessment for learning strategies into their PE lessons for up to a maximum of 13 weeks. FMS competence in jump, skip, hop, overhand throw, dribble and catch was the primary outcome assessed using the Test of Gross Motor Development-3rd Edition. Secondary outcome measures included perceptions of physical and FMS competence, teacher support, and student enjoyment using questionnaires. Multilevel modelling for the analysis of clustered data was used to determine the effectiveness of the intervention. ResultsSignificant intervention effects were found for locomotor skills (adjusted mean difference, 2.47 units; Cohen’s d=0.76), overall FMS competence (3.72 units; Cohen’s d=0.93) and perceived teacher support (0.21 units; Cohen’s d=0.05). However, there was a group-by-time effect for perceived physical competence (−0.16 units; Cohen’s d=−0.07) in favouring of the control group. ConclusionsAn assessment-based teacher-led FMS intervention was effective in improving FMS proficiency in primary schoolchildren. The results highlight the need for increased teacher support to develop positive self-perceptions of competence while promoting children’s FMS.Trial registration CUHK_CCRB00479.

Evaluation of the Psychometric Properties of the Persian Version of the Test of Gross Motor Development–3rd Edition

The Test of Gross Motor Development–3rd Edition (TGMD-3) is an instrument for measuring gross motor development in children with and without a disability. This study aims to evaluate the psychometric properties of the Persian version of the TGMD-3 in 3- to 10-year-old Iranian children. The TGMD-3 was administered to 1,600 children (M age = 6.56 ± 2.29 years; 50% boys). The content validity of the TGMD-3 was established by five experts while its reliability was assessed through calculating internal consistency, test–retest, intra-rater, and inter-rater reliability coefficients. All reliability indices were excellent (&gt;.82). The two-factor model was validated using confirmatory factor analysis. Adequate fit indices were found for the two-factor model (χ2 (64) = 389.02, p &lt; .05, root mean square error of approximation (RMSEA) = .056, goodnesss of fit index (GFI) = .96, adjusted goodness of fit index (AGFI) = .94, normed fit index (NFI) = .96, non-normed fit index (NNFI) = .96, comparative fit index (CFI) = .96, incremental fit index (IFI) = .96, standardized root mean square residual (SRMR) = .03). An alternative one-factor model was also tested. Adequate fit indices in a one-factor model were found (χ2 (65) = 615.88, p = .0001, RMSEA = .07, GFI = .94, AGFI = .92, NFI = .98, NNFI = .98, CFI = .98, IFI = .98, SRMR = .03). The psychometric properties of the Persian version of TGMD-3 in Iranian children were supported and users can confidently use this test to evaluate gross motor development in Iranian children.

Socioecological correlates of perceived motor competence in 5- to 7-year-old Finnish children.

We investigated child, family, and environmental factors associated with young children's perceptions of locomotor (LM) and object control (OC) skills. The participants comprised 472 children (6.22±0.63) and their parents. The children were assessed for their perception of motor competence in LM and OC skills (using the pictorial scale of Perceived Movement Skill Competence for young children), and actual motor competence (Test of Gross Motor Development 3rd edition and Körperkoordinationstest Für Kinder). Anthropometrics were calculated using the children's body mass index standard deviation scores. A parent questionnaire included questions about child factors (sex, child's independent walking age, time spent sedentary and outdoors, participation in organized sport activities, and access to electronic devices), family factors (parent educational level, physical activity frequency, and sedentary behavior), and environmental factors (access to sport facilities). Variance analysis sought to identify age-related differences, and a linear regression model examined correlates of children's perception of LM and OC skills. The children's movement skill perceptions were found to be generally high. Four factors explained 5.7% of the variance in perceptions of LM skills and 7.5% of the variance in perceptions of OC skills. Two factors, lower age and higher actual motor competence, explained most of the children's skill perceptions. Access to electronic devices (less) and Body mass index (BMI) (higher) were associated with perceptions of LM skills. Participation in organized sport activities (higher) and parental education (lower) were associated with perceptions of OC skills. When promoting children's physical activity and motor competence, perceptions of motor competence are an important consideration.

The effect of the CHAMP intervention on fundamental motor skills and outdoor physical activity in preschoolers

PurposePhysical activity (PA) and fundamental motor skills are important components of current and future trajectories of health in young children. This study examined the effects of a 5-week motor skill intervention on preschoolers’ motor skill competence and their PA behaviors while participating in the motor skill intervention or outdoor free play (recess). MethodsA total of 102 preschoolers served as participants and were part of a motor skill intervention group (n = 64) or a control/outdoor free play group (n = 38). Children's motor skills were assessed before and after the intervention using the Test of Gross Motor Development-3rd edition. PA during the motor skill intervention and outdoor free play was assessed using accelerometers both immediately before the start (baseline, Week 0 or Week 1) and end (late, Week 5 or Week 6) of the intervention. ResultsAll children significantly improved their motor skills from baseline to late assessment (p < 0.05). Children in the motor skill intervention demonstrated greater rates of change (p < 0.001) and scored higher on all motor skills at the late assessment compared with the control group (p < 0.001). There was no effect of group (control vs. intervention), but there was a significant effect of sex on children's PA during outdoor free play at baseline (p < 0.05). Similarly, there was no effect of group on PA during days with the movement program (intervention vs. outdoor free play) at either time point, but boys were more active than girls at the late assessment (p < 0.05). Last, children in the intervention engaged in more PA while participating in the intervention toward the end of the intervention than at the beginning. ConclusionThe 5-week motor skill intervention was effective at improving preschoolers’ motor skills and rates of change in motor skills were higher for children who completed the intervention compared with children in the control group. Preschoolers in the intervention did demonstrate PA changes while participating in the intervention, but these changes did not translate outside of the intervention setting.

Testing the Motor Competence and Health-Related Variable Conceptual Model: A Path Analysis.

The purpose of this study was to empirically test a comprehensive conceptual model linking gross motor skills, school day physical activity and health-related variables in a sample of sixth graders. Participants were a convenience sample of 84 sixth grade students (Mean age = 11.6 ± 0.6 years). Gross motor skills were assessed using the Test of Gross Motor Development-3rd Edition (TGMD-3), school day physical activity was assessed using pedometers, health-related fitness was assessed using Progressive Aerobic Cardiovascular Endurance Run (PACER) laps, perceived competence assessed using a validated questionnaire and the health-related outcome was assessed using Body Mass Index (BMI). The relationship between school day step counts and TGMD-3 scores was mediated through both perceived competence and PACER laps (p = 0.015) and the direct path coefficient between TGMD-3 scores and BMI was statistically significant (b = −0.22 kg/m2, p < 0.001). Overall there was good model fit with all indices meeting acceptable criteria (χ2 = 3.7, p = 0.293; Root Mean Square Error of Approximation (RMSEA) = 0.062, 90% Confidence Interval (C.I.): 0.00–0.23; Comparative Fit Index (CFI) = 0.98; Tucker-Lewis Index (TLI) = 0.96; Standardized Root Mean Square Residual (SRMR) = 0.052). The comprehensive conceptual model explaining the inter-relationships among motor competence and health-related variables was empirically validated with the relationship between physical activity and gross motor skills mediated through both perceived competence and cardiorespiratory endurance in a sample of sixth graders.

Fundamental motor skills, screen-time, and physical activity in preschoolers

PurposeTo examine the associations among preschoolers fundamental motor skills, screen-time, physical activity (PA), and sedentary behavior (SB). MethodsChildren ages 3–4years were enrolled in a prospective observational trial of PA. Trained assessors conducted the Test of Gross Motor Development-3rdedition (TGMD-3), and the Movement Assessment Battery for Children-2nd edition, and parent-reported child screen-time and sociodemographic information. Children wore an accelerometer for 7days to examine SB and total PA (TPA). TPA was further characterized as moderate-to-vigorous PA (MVPA) or vigorous PA (VPA). Mixed linear models were calculated, controlling for age (for TGMD-3), sex, household income, and accelerometer wear time (for accelerometry models), with childcare center as a random effect. The primary analysis reported on the cross-sectional baseline data of 126 children with complete fundamental motor skill and screen-time data; a subanalysis included 88 children with complete accelerometry data. ResultsChildren were 3.4 ± 0.5years of age (54% girls; 46% white, 42% African American, 12% other). A total of 48% lived in households at or below the federal poverty level. Children engaged in 5.1 ± 3.6h/day of screen-time. Children's screen-time was inversely related to the Movement Assessment Battery for Children-2nd edition, manual dexterity skills percentile (β (SE) = −1.7 (0.8), p = 0.049). In the accelerometry subsample, children engaged in 5.9 ± 0.9h/day of TPA of which 1.7 ± 0.6h/day was MVPA. Boys engaged in more MVPA and VPA and less SB compared with girls (all p < 0.05). A higher TGMD-3, total score (β (SE) = 0.4 (0.2), p = 0.017) and locomotor score (β (SE) = 0.7 (0.3), p = 0.018) were associated with more VPA but not with TPA or MVPA. Screen-time and television in the bedroom were not related to SB, TPA, MVPA, or VPA. ConclusionChildren's motor skills were positively related to VPA but inversely related to screen-time. Further inquiry into the implications of high exposure to screen-time in young children is needed.

Demographic Characteristics Related to Motor Skills in Children Aged 5-7 Years Old

Background: Motor skill is important to young children’s overall well-being. However, there has been a paucity of work examining the demographic characteristics on young children’ motor skill. Objective: The purpose of this study was to examine the differences in motor skills across socio-economic status (SES) and grade levels in elementary school children. Method: Participants were 651 kindergarten to 2nd grade children (mean age = 6.2 ± 0.9 years; 305 girls, 346 boys) recruited from two low SES schools and another two high SES schools. Selected motor skill items were measured using the Test for Gross Motor Development-3rd Edition (TGMD-3) instrument. Data were collected once at each school during physical education class and recess period. A 4 × 3 × 2 × 2 Multivariate Analysis of Variance (MANOVA) test was employed to examine the differences among grade, SES, ethnicity, and sex on TGMD-3 scores. Results: There were significant main effects for grade (Wilks’ lambda = 0.34, F (2, 1274) = 229.6, p &lt; 0.001) and SES (Wilks’ lambda = 0.70, F (2, 637) = 136.3, p &lt; 0.001). Follow-up tests revealed statistically significant differences between grades on locomotor, object control and overall TGMD-3, with the 2nd graders displaying highest mean scores, followed by 1st graders and kindergarteners. Follow-up tests suggested that high SES children displaying statistically significant higher mean scores than low SES students on all motor skill variables. Conclusion: Older children demonstrated higher motor competence levels, and those with high SES displayed higher motor skill levels than lower SES children.

Gross Motor Skills and School Day Physical Activity: Mediating Effect of Perceived Competence

The purpose of this study was to examine the relationship between gross motor skills and school day steps per minute, testing various motivational constructs as potential mediators. A convenience sample of 66 sixth-grade children (mean age = 11.6 ± 0.5 years; 30 boys, 36 girls) were recruited from one public “Zoom” school. Gross motor skills were assessed using the Test for Gross Motor Development-3rd Edition. Motivational constructs were assessed using a series of validated questionnaires. Children wore a pedometer for one school week. A bootstrap mediation analysis was employed using gross motor skills scores as the predictor variable and steps per minute as the outcome variable; the motivational constructs consisted of perceived competence, enjoyment, and self-efficacy as potential mediators. The results from a bootstrap mediation analysis yielded a statistically significant average causal mediation effect (ACME) using perceived competence as the mediator (ACME = 0.022, 95% CI [0.001, 0.054], p = .018). Perceived competence mediated 30.8% of the total effect between gross motor skill scores and steps per minute, with the entire model explaining approximately 13.6% of the variance. The relationship between gross motor skills and school day physical activity may be mediated through perceived competence in sixth-grade children.