Gender-Related Peculiarities of 7-Year-Old Schoolchildren’s Motor Fitness

Іващенко, О. В.; Nosko, Yu. M.; Bartík, Pavol; Makanin, Oleksii

doi:10.17309/tmfv.2020.4.05

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…In DA the acceptable classification accuracy rate was set at ≥95% with the classification error rate ≤5%. (Iermakov, Ivashchenko, Khudolii, Chernenko, Veremeenko, & Zelenskyi, 2021;Ivashchenko, Nosko, Bartik, & Makanin, 2020 (Sec.). We used only Log 10 -transformed data for DA.…”

Section: Discussionmentioning

confidence: 99%

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Surface Electromyography Based Core Muscle Fatigue Analysis During Repetitive Plank Using Multivariate Dimensionality Reduction Methods in Boys Aged 12-14

Samanta

Mukherjee

2021

Teor. metod. fiz. vihov.

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The aims of the study were: 1. To analyse the discriminative power of neuromuscular components for classifying the pre and post muscle fatigued states. 2. To examine whether the modification of neural recruitment strategies become more/less heterogeneous due to fatigue. 3. To research the effect of Erector Spinae (ES) muscle activity collectively with Rectus Abdominis (RA) and External Oblique (EO) muscle activity to identify the reduced spine stability during fatiguing Plank. Material and methods. Twelve boys (age – 12-14 years, height 148.75 ± 10 cm, body mass 38.9 ± 7.9 kg) participated in the study. Multivariate Discriminant Analysis (DA) and Principal Component Analysis (PCA) were applied to identify the changes in the pattern of the electromyographic signals during muscle fatigue. In DA the Wilks’ lambda, p-value, canonical correlation, classification percentage and structure matrix were used. To evaluate the component validity the standard limit for Kaiser-Meyer-Olkin (KMO) was set at ≥0.529 and the p-value of Bartlett’s test was ≤0.001. The eigenvalues ≥1 were used to determine the number of Principal Components (PCs). The satisfactory percentage of non-redundant residuals were set at ≤50% with standard value >0.05. The absolute value of average communality (x̄ h2) and component loadings were set at ≥0.6, ≥0.4 respectively. Results. Standardized canonical discriminant analysis showed that pre and post fatigued conditions were significantly different (p = 0.000, Wilks’ lambda = 0.297, χ2 = 24.914, df=3). The structure matrix showed that the parameter that correlated highly with the discriminant function was ES ARV (0.514). The results showed that the classification accuracy was 95.8% between fatigued conditions. In PCA the KMO values were reduced [0.547Pre fatigue vs. 0.264Post fatigue]; the value of Bartlett’s sphericity test was in pre χ2 = 90.72 (p = 0.000) and post fatigue χ2 = 85.32 (p = 0.000); The Promax criterion with Kaiser Normalization was applied because the component rotation was non-orthogonal [Component Correlation Matrix (rCCM) = 0.520 Pre fatigue >0.3Absolute<0.357Post fatigue]. In pre fatigue two PCs (cumulative s2 – 80.159%) and post fatigue three PCs (cumulative s2 – 83.845%) had eigenvalues ≥1. The x̄ h2 increased [0.802 Pre fatigue vs. 0.838 Post fatigue] and the percentage of nonredundant residuals reduced [50% Pre fatigue vs. 44% Post fatigue] from pre to post fatigue. Conclusions. The variability and heterogeneity increase in the myoelectric signals due to fatigue. The co-activity of antagonist ES muscle is significantly sensitive to identify the deteriorating spine stability during the fatiguing Plank. Highly correlated motor unit recruitment strategies between ES and RA, providing supportive evidence to the concept of shared agonist-antagonist motoneuron pool or “Common Drive” phenomenon during fatigue.

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Section: Discussionmentioning

confidence: 99%

“…DA and PCA are both used to reduce the dimensionality and noise level of sEMG data. DA provides better classification accuracy between groups by maximizing the ratio of between and within-group variance (Ivashchenko, Nosko, Bartik, & Makanin, 2020).…”

Section: Introductionmentioning

confidence: 99%

Surface Electromyography Based Core Muscle Fatigue Analysis During Repetitive Plank Using Multivariate Dimensionality Reduction Methods in Boys Aged 12-14

Samanta

Mukherjee

2021

Teor. metod. fiz. vihov.

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“…Longitudinal studies have shown that children with low motor competence tend to be less physically active than children with higher motor competence, and that trend continues through adolescence and adulthood (Barnett et al, 2008;Hands, 2008). Furthermore, motor competence has been related to physical fitness (Ivashchenko, Nosko, Bartik, & Makanin, 2020;Haga, 2008a;Hands, 2008) and self-perception (Barnett, Morgan, van Beurden, & Beard, 2008;Vedul-Kjelsås, Sigmundsson, Stensdotter, & Haga, 2012). On the contrary, reduced physical activity in children with low motor competence may be associated with lower performance levels on several components of physical fitness, such as cardiovascular endurance, muscular strength and endurance, and speed (Haga, 2008b;Hands, 2008;Tsiotra, Nevill, Lane, & Koutedakis, 2009).…”

Section: Introductionmentioning

confidence: 99%

Differences of Motor Proficiency in Preschool Girls Related to Organized Physical Activity

Djordjević

Válková

Petković

2021

Teor. metod. fiz. vihov.

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This study purpose was to determine the level of motor competence and differences in motor skills of preschool girls aged 5 to 7 from Serbia according to participation in organized physical activities. Materials and methods. Ninety-one girls aged 5-7 years (mean ± 6.4) were divided into three subsamples: control group, rhythmic gymnastics and sports school. Girls were assessed with the MABC-2 test. Descriptive statistics analyzed the basic characteristics of participants according to the level of motor competence. Furthermore, Pearson’s χ2 test for contingency tables, MANOVA and discriminant analysis were employed to find differences in motor proficiency among groups. Results. Significant differences have been found in girls attending rhythmic gymnastics in aiming & catching on the upper bound of moderate effect size (p < 0.001, η2 = 139), and total test score moderate effect size (p = 0.006, η2 = 0.105) compared to girls who did not participate in organized physical activity. The discrimination coefficient explained the differences in girls in aiming and catching, with a contribution of 41.4%, balance skills with 24%, and a total test score of 22.9%. According to the level of motor competence, 61% from the control group and 40% from the sports school group scored below average in aiming & catching. The total test score of ≥ 50 percentile was achieved by 68.3% of girls in the control group, 84% in the sports school group, and 96% in rhythmic gymnastics. Conclusion. This study confirms that sports practice contributes to the development of motor capabilities and influences individual differences in children’s scores. Our findings can contribute to understanding how important it is to promote object control skills games for girls and older preschoolers generally.

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“…As in the studies by Ivashchenko, Nosko, Bartik, & Makanin (2020), Iermakov, Ivashchenko, & Khomiakov (2020), non-significant differences in the level of development of motor coordination and statistically significant differences in the level of development of strength, speed strength, speed, endurance, and in the level of proficiency in gymnastic exercises between girls and boys were observed, which indicates a need for dedicated development of motor skills. Such development is possible in teaching physical exercises with the use of programmed materials, as indicated by literature data (Shueva, Ivashchenko, & Jagiello, 2021;Suprun, Ivashchenko, & Cieślicka, 2021;Kharkovshchenko, 2022).…”

Section: Discussionmentioning

confidence: 52%

Pattern Recognition: Features of Motor Fitness of 9-Year-Old Schoolchildren

Іващенко¹,

Skochko²,

Skrobecki³

et al. 2022

J. learn. theory methodol.

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The purpose of the study was to identify the gender-related features of motor fitness of 9-year-old schoolchildren. Materials and methods. The study involved 83 9-year-old schoolchildren (35 girls, 48 boys). The children and their parents were informed about all the features of the study and gave their consent to participate in the experiment. The study used the following research methods: analysis of scientific and methodological literature, pedagogical observations, testing of motor fitness, probabilistic approach to assessing the learning process, methods of mathematical statistics. In the experiment, the study controlled the level of proficiency in the following exercises: Rope climbing in 2 steps, Rope climbing in 3 steps, One leg swing upward circle. Results. In the girls and boys, the differences in the level of development of movement coordination between individual parts of the body and vestibular stability are not statistically significant. The 9-year-old boys have a statistically significantly higher level of development of strength, speed strength, speed, endurance, and a higher level of proficiency in gymnastic exercises and rope climbing than the girls. The obtained canonical function explains 100% of the variation of results and is informative for classifying 8-year-old schoolchildren’s motor fitness (r = 0.937). The analysis of the canonical function indicates its statistical significance (λ = 0.122; p = 0.001). Conclusions. The canonical discriminant function can be used to classify the gender-relatedfeatures of motor fitness of 9-year-old schoolchildren. The discriminant analysis revealed the indicators that have the greatest weight in assessing the gender-related features of motor fitness of 9-year-old schoolchildren. They include the level of relative strength of the shoulder flexors, speed strength, agility, and the level of proficiency in the One leg swing upward circle on a low bar.

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Gender-Related Peculiarities of 7-Year-Old Schoolchildren’s Motor Fitness

Cited by 7 publications

References 23 publications

Surface Electromyography Based Core Muscle Fatigue Analysis During Repetitive Plank Using Multivariate Dimensionality Reduction Methods in Boys Aged 12-14

Surface Electromyography Based Core Muscle Fatigue Analysis During Repetitive Plank Using Multivariate Dimensionality Reduction Methods in Boys Aged 12-14

Differences of Motor Proficiency in Preschool Girls Related to Organized Physical Activity

Pattern Recognition: Features of Motor Fitness of 9-Year-Old Schoolchildren

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