Untitled

Іващенко

Єрмаков

et al. 2019

The study purpose was to experimentally substantiate technological approaches to estimating training effects of strength loads in girls aged 7 years. Materials and methods. The study participants were girls aged 7 years (n = 40). The children and their parents were fully informed about all the features of the study and gave their consent to participate in the experiment. To solve the tasks set, theoretical and empirical methods were used: analysis and generalization of scientific and methodological literature; modeling, pedagogical observation and experiment, methods of mathematical experiment planning (2k type FFE). Results. The study results show that in the proposed matrix of the 22 type full factorial experiment design, the chosen step of variation of factors is sufficient to study the influence of different modes of strength exercises on the dynamics of ITE in girls aged 7 years. Conclusions. At station 1 (exercises to strengthen arms and shoulders), the ITE in girls aged 7 is most influenced by the interaction between the number of repetitions in a set and the rest interval (x1x2) – 83%, the number of repetitions in a set (x1) – 15%; at station 2 (exercises to strengthen abdominal muscles), it is most influenced by the number of repetitions in a set (x1) – 48.5%, the rest interval (х2) – 48.5%; at station 3 (exercises to strengthen back muscles) – by the rest interval (x2) – 82%; at station 4 (exercises to strengthen leg muscles) – by the rest interval (x2) – 92%. At stations 1–3, to strengthen the ITE, it is necessary to increase the number of repetitions in a set and the duration of the rest interval, at station 4, it is necessary to increase the number of repetitions in a set and to reduce the duration of the rest interval.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strength Abilities: Estimation of Immediate Training Effect of Strength Loads in Girls Aged 7 Years

Іващенко

Єрмаков

et al. 2019

“…Multidimensional methods of mathematical statistics such as factor and discriminant analyses are effective for studying the structure of schoolchildren's motor preparedness (Ivashchenko, 2016;Lopatiev, Ivashchenko, Khudolii, Pjanylo, Chernenko, & Yermakova, 2017;Vlasov, Demichkovskij, Ivashchenko, Lopatiev, Pitin, Pjanylo, & Khudolii, 2016). There are two vectors in the methodological approach to the use of multidimensional methods of mathematical statistics.…”

Section: Introductionmentioning

confidence: 99%

Motor Abilities: Identification of Development Level in Boys Aged 12-14

Іващенко

Єрмаков

et al. 2019

The study objective is to determine the possibility of identifying the state of strength abilities development in boys aged 12-14, using the methodology of multidimensional statistics. Materials and methods. The study involved boys: 12 (n =35), 13 (n = 36), 14 (n = 36) years old. The study used the following methods: analysis and collation of scientific and methodological literature, general scientific methods of theoretical level, such as analogy, analysis, synthesis, abstraction, induction, as well as general scientific methods of empirical level: observation, testing, experiment. The testing program included well-known tests. Results. In identifying the state of motor abilities development in boys aged 12-14, the most important results were obtained in tests: 10 “Squats Test (two legs), quantity of times” (0.519), 9 “Trunk Lift Test, quantity of times” (0.497), 21 “Flamingo Balance Test - single leg balance test” (-0.496), 1 “Pull-Up / Chin Up Test (low crossbar), quantity of times” (0.428), 19 “Hand Tapping Test, sec.” (-0.427), 20 “Seated Forward Bend, cm” (-0.412), 5 “The subject lies in prone position, arms bent at the elbow 90 degrees - hold position in seconds” (0.408). These tests characterize the comprehensive development of motor abilities in boys aged 12-14. In identifying the state of motor abilities development in boys aged 13-14, the most important results were obtained in tests: 8 “Decline Reverse Crunch on Bench, quantity of times” (-0.989), 11 “Single Leg Squat (SLS) Test - right leg, quantity of times” (0.965), 1 “Pull-Up / Chin Up Test (low crossbar), quantity of times” (0.676), №13 “Single Leg Squat (Pistol) - right leg” (0.682), 17 “Eurofit Sit Up Test (for 30 sec.), quantity of times” (0.454). These tests characterize the development level of relative and static leg strength, strength endurance of abdominal muscles, and dynamic strength of shoulder muscles. Conclusions. A discriminant analysis made it possible to determine informative indicators for comprehensive control of motor abilities development in boys aged 12-14; to answer the question as to how significantly the states of motor abilities development in boys aged 12, 13 and 14 differ; what motor tests most substantially influence the differentiation of classes; what class the object belongs to based on the values of discriminant variables. To identify the level of motor abilities development in boys aged 12-14 years, it is necessary to focus on the indicators of relative strength and strength endurance; in boys aged 13 and 14 years – on the indicators of strength endurance of abdominal muscles and endurance of leg muscles.

“…In their research papers, Khudolii and Ivashchenko (2014), Lopatiev, Ivashchenko, Khudolii, Pjanylo, Chernenko and Yermakova (2017) substantiated the conceptual approaches to experiment planning when studying the effectiveness of learning process and to developing learning models. The researchers ascertained the effectiveness of using factorial plans for studying the process of teaching children and adolescents and developing regression models.…”

mentioning

confidence: 99%

Pattern Recognition: Motor Skills Development in Girls Aged 15

Капкан

Bartík

2019

The study objective is to determine physical exercises modes when developing motor skills in girls aged 15.Materials and methods. The participants in the study were 40 girls aged 15. To achieve the objectives set, the following research methods were used: study and analysis of scientific and methodological literature; pedagogical observation, timing of training tasks; pedagogical experiment, methods of mathematical statistics, methods of mathematical experiment planning, discriminant analysis. To achieve the objective set, the study examined the effect of different variants of performing exercises, specifically: the number of repetitions (x1) and rest intervals (x2) on mastering a press headstand technique. The girls aged 15 were divided into four groups according to the experiment plan. During the learning process, a method of algorithmic orders was used. The student could proceed to the next exercise only after a correct performance of the previous exercise on three consecutive attempts. The number of repetitions needed to teach exercises in each series of training tasks was recorded. The level of proficiency in the physical exercises performance was determined by the alternative method: “performed” or “failed”. A technically correct performance of the exercise gave the students “1” point; a failure to perform the exercise gave them “0” entered in the protocol.Results. The 22 type experiment made it possible to study the multifactorial structure of teaching the girls aged 15, using a program of algorithmic orders; to specify optimal correlations of factors for their use when teaching physical exercises during physical education classes; to collect data for the calculation of regression models of teaching separate series of training tasks and for discriminant analysis to obtain a generalized model of teaching an exercise in general.Conclusions. To select a generalized mode of exercises of the series of tasks when teaching girls aged 15 a press headstand and handstand, the first discriminant function can be used with an emphasis on the most informative variables.The regression equations obtained from the analysis of the 22 full factorial experiment data make it possible to specify and select the most effective modes of exercises for mastering separate series of training tasks.