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17Level of physical exercises' mastering in structure of 11-13 yrs age boys' motor fitness
Ivashchenko O.V ', Iermakov S.S.2, Khudolii O.M.1, Cretu M.3, Potop V.4 'H.S. Skovoroda Kharkiv National Pedagogical University, Ukraine 2Kazimierz Wielki University, Bydgoszcz, Poland 3 University of Pitesti, Romania 4Ecological University of Bucharest, Romania
Abstract
Purpose: Material:
Results:
Conclusions:
Keywords:
to find the place of physical exercises' mastering level in structure of 11-13 yrs age boys' motor fitness. in the research 11 yrs age boys (n=58), 12 (n=76) and 13 years age (n=93) participated. Testing program included well-known tests: "Forward roll", "Backward roll", "Vault", "Climbing rope (three attempts)", "Bridge", "Stance on shoulder blades".
By indicators of physical condition 11-13 yrs age boys statistically confidently differ one from another
(p<0,001). Level of mastering of gymnastic exercises "Backward roll", "Vault", "Climbing rope (three attempts)",
"Bridge", "Stance on shoulder blades" with age statistically confidently increases (p<0,001).
In factorial structure of motor fitness, level of physical exercises' mastering has weight 17,5% (11 yrs age),
36,6% (12 years), 28,5% (13 years). Analysis of communities showed that in 11-13 yrs age boys training of
motor abilities is effective (if they become a component of mastered motor skills).
motor abilities, level of mastering, factorial analysis, 11-13 yrs age boys.
Introduction
The problem of optimization of schoolchildren's physical education was regarded in works of Bodnar I. [1], Vas'kov Iu.V [2], Krucevich T. et al. [9], Ivashchenko O.V. [8]. Bodnar I. stresses on need in searching new approaches to integrated physical education of different health groups' schoolchildren [1]. The authors defined urgent problems of educational process's perfection at physical culture lessons. Theoretical aspects and conditions of implementation in educational process of such innovative approaches as culturologic, competence, synergetic, axiologic, achmeologic and other are regarded. The ways of the mentioned approaches' implementation in real educational process are open. The results of innovative approaches implementation in personality oriented educational process are analyzed. It was proved that implementation of innovative approaches facilitates rising of educational process's organization. Its basis is personality oriented approach to pupils. Besides, certain difficulties in educational process's organization in comprehensive schools were found [2]. Methodic materials for planning of physical education process in comprehensive schools have been worked out [9]. Conception of physical education, which was built on the base of physical education's simulation, motor abilities' training and pedagogic control has been created. This conception includes: application of factorial and discriminant models of functional state age changes and motor fitness. The purpose of this conception is: planning of educational material, current, finalizing and stage-by-stage control of children's fitness; modes of loading in a lesson and in series of lessons; regimes of alternation of relaxation and exercises [8].
In schoolchildren's physical education there marked
© Ivashchenko O.V., Iermakov S.S., Khudolii O.M., Cretu M., Potop V., 2017 doi:10.15561/18189172.2017.0506
out directions of researches, which are connected with studying of motor abilities [5, 6, 7] and process of motor actions' training [17, 20, 28]. Peculiarities of functional, coordination and power fitness of children and adolescents have been found [4, 11]. Dependence of training of power loads' effects on regime of exercises' fulfillment and relaxation has been determined [18, 23]. The process of motor actions' training was studied from position of interdisciplinary connections [12, 13]; formation of motor competence [14, 15]; formation of meta-cognitive behavior [16]; verbal perception in mastering of sport movements [19]; optimization of regimes of exercises' repetitions and rest intervals [20, 26, 28].
However, in available scientific literature there is a little data about wholeness of motor abilities' development and children's and adolescents' training [27, 29]. Thus, study of motor fitness influence on level of physical exercises' mastering is rather relevant. In other works training of motor fitness and dynamic of physical exercises' mastering in 11-13 yrs age girls were regarded [31, 32]. In our work we have studied motor fitness and dynamic of physical exercises' mastering in 11-13 yrs age boys.
The purpose of the research is to find the place of physical exercises' mastering level in structure of 11-13 yrs age boys' motor fitness.
Material and methods
Participants: in the research 11 yrs age boys (n=58), 12 (n=76) and 13 years age (n=93) participated.
Organization of the research: we used the following methods of research: analysis of scientific-methodic literature, pedagogic testing, methods of mathematical statistic. Testing program included well known tests. We registered: body length and mass, vital capacity of lungs (VCL), right and left hand dynamometry. We registered
results in the following tests: "Pressing ups", times", "legs' rising in hanging on Sweden wall position, times", "Angle on parallel bars, sec.", "Torso rising in sitting position from lying on back position during 1 min.", "Forward torso rising from sitting position (legs apart), cm", "Hanging on bent arms, sec.", ""Torso rising from lying on abdomen position during 30 sec., times", "Long jump from the sport, cm,", "Throw of filled ball (1 kg) in sitting position", "Shuttle run 4x9 m, sec." [25].
We studied mastering level of exercises: "Forward roll", "Backward roll", "Vault", "Climbing rope (three attempts)", "Bridge", "Stance on shoulder blades". [27].
Statistical analysis: the data were processed with the help of statistical analysis program IBM SPSS 20. The used factorial analysis included implied method of principle components. Method of rotation implied Varimax with normalization of Keiser. For every variable we calculated the following statistics: mean values,standard deviations, Student's t-test for independent samples. The level of mastering was determined as correlation of successful attempts (m) and their general quantity (5): p = (m/5) x100.
Table 1. Testing results of 11-13 yrs boys
Results
Results of the researches are presented in tables 1-7. By indicators of physical condition 11-13 yrs age boys confidently differ one from another (p<0,001). Body length increased by 8,6%, by 30,9% — body mass, by 32,33% — vital capacity of lungs, by 39,7% — strength of right hand and by 38,3,8% — strength of left hand.
12 yrs boys show confidently better results than 11 yrs boys in tests: "Chin ups in lying position, times", "Legs' rising, hanging on Sweden wall, times", "Angle on parallel bars, sec., times", "Forward torso bending in sitting position (legs apart), cm", "Hanging on bent arms, sec.", "Torso rising from lying on abdomen position during 30 sec., times", "Long jump from the spot, cm", "Throw of filled ball (1 kg) from sitting position, cm".
13 yrs boys show confidently better results in the following tests: "Pressing ups, times", "Chin ups, times", "Legs' rising, hanging on Sweden wall, times", "Angle on parallel bars, sec., times", "Torso rising from position lying on back during 1 minute, times", "Torso rising from lying on abdomen position during 30 sec., times", "Long jump from the spot, cm", "Throw of filled ball (1 kg) from
Difference
№ № Description of parameters Age N X m of mean t P
values
11 58 143,172 ,857 -7,182* -5,654* <0,001
1 Height, cm 12 76 150,355 ,896 -5,225** -4,581** <0,001
13 93 155,580 ,726 -12,408*** -10,866*** <0,001
11 58 35,586 ,955 -6,716 -4,616 <0,01
2 Body mass, kg 12 76 42,302 1,040 -4,288 -2,889 <0,001
13 93 46,591 1,038 -11,005 -7,257 <0,001
11 58 1722,413 45,951 -285,480 -4,904 <0,01
3 VCL, cm3 12 76 2007,894 36,838 -270,599 -5,055 <0,001
13 93 2278,494 37,880 -556,080 -9,245 <0,001
11 58 18,448 ,360 -3,485 -4,220 <0,01
4 Right hand dynamometry, kg 12 76 21,934 ,667 -3,850 -4,031 <0,001
13 93 25,784 ,670 -7,336 -8,189 <0,001
11 58 17,586 ,646 -2,295 -2,319 <0,05
5 Left hand dynamometry, kg 12 76 19,881 ,710 -4,441 -4,536 <0,001
13 93 24,322 ,668 -6,736 -6,814 <0,001
11 58 20,224 ,679 -1,657 -1,416 >0,05
6 Pressing ups, times 12 76 21,881 ,881 -2,828 -2,224 <0,05
13 93 24,709 ,895 -4,485 -3,572 <0,001
11 58 1,758 ,184 -,438 -1,455 >0,05
7 Chin ups, times 12 76 2,197 ,222 -1,361 -3,572 <0,001
13 93 3,559 ,292 -1,800 -4,517 <0,001
Legs' rising, hanging on 11 58 4,758 ,394 -,0440 -,073 >0,05
8 12 76 4,802 ,431 -2,810 -4,647 <0,001
Sweden wall, times 13 93 7,612 ,417 -2,854 -4,649 <0,001
9 Angle on parallel bars, sec., 11 58 1,206 ,211 ,009 ,035 >0,05
times 12 76 1,197 ,177 -,609 -2,294 <0,05
13 93 1,806 ,191 ,599 2,039 <0,05
Torso rising from position 11 58 39,000 ,736 ,592 ,617 >0,05
10 lying on back during 1 minute, 12 76 38,407 ,621 -5,151 -5,615 <0,001
times 13 93 43,559 ,655 -4,559 -4,497 <0,001
Forward torso bending in 11 58 4,051 ,380 -1,448 -2,728 <0,01
11 sitting position (legs apart), 12 76 5,500 ,361 2,231 5,305 <0,001
cm 13 93 3,268 ,239 ,782 1,835 >0,05
11 58 5,327 ,692 -1,646 -1,368 >0,05
12 Hanging on bent arms, sec 12 76 6,973 ,907 -2,563 -1,996 <0,05
13 93 9,537 ,893 -4,210 -3,348 <0,001
Table 1 (Continued)
№ №
Description of parameters
Age N X m Difference of mean values t P
11 58 19,137 ,399 -1,809 -2,638 <0,005
12 76 20,947 ,515 -4,783 -6,704 <0,001
13 93 25,731 ,488 -6,593 -9,494 <0,001
11 58 144,913 2,282 -5,217 -1,831 >0,05
12 76 150,131 1,779 -16,513 -7,678 <0,001
13 93 166,645 1,290 -21,731 -8,935 <0,001
11 58 209,396 5,283 -57,313 -6,838 <0,001
12 76 266,710 6,109 -69,633 -9,435 <0,001
13 93 336,344 4,427 -126,947 -18,163 <0,001
11 58 11,667 ,101 ,140 1,016 >0,05
12 76 11,526 ,093 ,119 ,107 >0,05
13 93 11,406 1,010 ,260 ,203 >0,05
11 58 80,689 2,252 -9,047 -3,126 <0,002
12 76 89,736 1,854 -3,596 -1,537 >0,05
13 93 93,333 1,477 -12,643 -4,900 <0,001
11 58 64,931 2,926 -14,016 -3,557 <0,001
12 76 78,947 2,619 -9,654 -2,877 <0,005
13 93 88,602 2,149 -23,671 -6,631 <0,001
11 58 72,069 2,553 -18,983 -6,362 <0,001
12 76 91,052 1,732 -,775 -,299 >0,05
13 93 91,828 1,865 -19,758 -6,362 <0,001
11 58 68,620 3,482 -16,379 -3,995 <0,05
12 76 85,000 2,402 -1,236 -,335 >0,05
13 93 86,236 2,700 -17,615 -4,015 <0,001
11 58 82,069 3,432 -11,878 -3,388 <0,002
12 76 93,947 1,590 3,839 1,445 >0,05
13 93 90,107 2,019 -8,038 -2,158 <0,05
11 58 85,517 2,243 -2,903 -,986 >0,05
12 76 88,421 1,919 -4,267 -1,614 >0,05
13 93 92,688 1,803 -7,170 -2,481 <0,05
jrison of 12-13 years; *** comparison of 11-13 years
Torso rising from lying on
13 abdomen position during 30 sec., times
14 Long jump from the spot, cm
15
17
18
20
22
Throw of filled ball (1 kg) from sitting position, cm
16 Shuttle run, 4х9 m, sec.
Forward roll, level of mastering
Backward roll, level of mastering
19 Vault, level of mastering
Climbing rope (three attempts), level of mastering
21 Bridge, level of mastering
Stance on shoulder blades, level of mastering
comparison of 11-12 years;
Table 2. Matrix of factorial analysis of 11 yrs boys' testing. Rotation method: Varimax with Keiser's normalization
№ № Description of parameters Component 1 2 3 4 5 6 h2
1 VCL, cm3 ,778 ,379 ,803
2 Right hand dynamometry, kg ,702 ,343 ,318 ,827
3 Left hand dynamometry, kg ,741 ,633
4 Pressing ups, times ,530 -,606 ,784
5 Chin ups, times ,373 -,693 ,788
6 Legs' rising, hanging on Sweden wall, times ,706 ,577
7 Angle on parallel bars, sec., times ,803 -,346 ,897
8 Torso rising from position lying on back during 1 minute, times ,534 -,472 ,326 ,719
9 Forward torso bending in sitting position (legs apart), cm ,777 ,706
10 Hanging on bent arms, sec ,664 -,329 ,310 ,747
11 Torso rising from lying on abdomen position during 30 sec., times -,368 ,635 ,639
12 Long jump from the spot, cm ,569 -,382 ,305 -,449 ,854
13 Throw of filled ball (1 kg) from sitting position, cm ,725 ,602
14 Shuttle run, 4х9 m, sec. ,627 ,510
15 Forward roll, level of mastering ,657 -,378 ,601
Table 2 (Continued)
№ № Component Description of parameters 1 2 3 4 5 6 h2
16 Backward roll, level of mastering ,446 ,615 ,750
17 Vault, level of mastering ,759 ,685
18 Climbing rope (three attempts), level of ,778 mastering ,750
19 Bridge, level of mastering ,834 ,815
20 Stance on shoulder blades, level of mastering ,850 ,860
21 Bridge, level of mastering ,532 ,412 ,366 -,390 ,759
22 Stance on shoulder blades, level of mastering ,736 ,706
Table 3. Full explained dispersion
Component Interpretation Sum of squares of rotation loads % of dispersion Cumulative %
1 Level of mastering and motor fitness 17,505 17,505
2 Physical condition 17,108 34,613
3 Strength of hand 13,390 48,003
4 Functional state of respiratory system 8,954 56,957
5 Motor coordination 8,896 65,853
6 Static power 6,920 72,773
Table 4. Matrix of actorial analysis of 12 yrs boys' testing. Rotation method: Varimax with Kwiser's normalization
№ № Description of parameters Компонента 12 3 4 h2
1 Height, cm ,821 ,781
2 Body mass, kg -,364 ,703 ,719
3 VCL, cm3 ,533 ,511 ,588
4 Right hand dynamometry, kg ,776 ,300 ,768
5 Left hand dynamometry, kg ,729 ,659
6 Pressing ups, times ,632 ,431 ,687
7 Chin ups, times ,761 ,441 ,842
8 Legs' rising, hanging on Sweden wall, times ,654 ,525 ,783
9 Angle on parallel bars, sec., times ,455 ,309 ,665 ,761
10 Torso rising from position lying on back during 1 minute, times ,806 ,354 ,803
11 Forward torso bending in sitting position (legs apart), cm -,513 -,609 ,707
12 Hanging on bent arms, sec ,549 ,629 ,788
13 Torso rising from lying on abdomen position during 30 sec., times ,696 ,433 ,723
14 Long jump from the spot, cm ,699 ,328 ,613
15 Throw of filled ball (1 kg) from sitting position, cm ,341 ,712 ,640
16 Shuttle run, 4х9 m, sec. -,596 ,438 -,371 ,708
17 Forward roll, level of mastering ,887 ,812
18 Backward roll, level of mastering ,927 ,902
19 Vault, level of mastering ,806 -,315 ,772
20 Climbing rope (three attempts), level of mastering ,858 ,778
21 Bridge, level of mastering ,572 -,547 ,309 ,762
22 Stance on shoulder blades, level of mastering ,860 ,817
Table 5. Full explained dispersion
Component Interpretation Sum of squares of rotation loads % of dispersion Cumulative %
1 Level of mastering and motor fitness 36,646 36,646
2 Physical condition 14,067 50,713
3 Speed power 12,639 63,352
4 Physical condition 11,255 74,607
Table 6. Matrix of actorial analysis of 13 yrs boys' testing. Rotation method: Varimax with Kwiser's normalization
№ № Description of parameters Components 1 2 3 4 5 h2
1 Height, cm ,706 ,656
2 Body mass, kg -,380 ,762 -,357 ,856
3 VCL, cm3 ,381 ,501 -,486 ,668
4 Right hand dynamometry, kg ,937 ,901
5 Left hand dynamometry, kg ,950 ,921
6 Pressing ups, times ,424 ,666 ,314 ,737
7 Chin ups, times ,388 ,699 ,810
8 Legs' rising, hanging on Sweden wall, times ,345 ,766 ,795
9 Angle on parallel bars, sec., times ,791 ,792
10 Torso rising from position lying on back during 1 minute, times ,376 ,680 ,800
11 Forward torso bending in sitting position (legs apart), cm -,325 ,821 ,813
12 Hanging on bent arms, sec ,728 ,380 ,858
13 Torso rising from lying on abdomen position during 30 sec., times ,697 ,569 ,814
14 Long jump from the spot, cm ,347 ,582 ,595
15 Throw of filled ball (1 kg) from sitting position, cm ,334 ,796 ,797
16 Shuttle run, 4х9 m, sec. ,463 ,260
17 Forward roll, level of mastering ,904 ,883
18 Backward roll, level of mastering ,889 ,858
19 Vault, level of mastering ,886 ,895
20 Climbing rope (three attempts), level of mastering ,881 ,876
21 Bridge, level of mastering ,794 ,822
22 Stance on shoulder blades, level of mastering ,909 ,917
Table 7. Full explained dispersion
Component Interpretation Sum of squares of rotation loads % of dispersion Cumulative %
1 Level of mastering and motor fitness 28,497 28,497
2 Strength of abdomen mucles 20,299 48,796
3 Physical condition 16,126 64,922
4 Flexibility 6,994 71,916
5 Speed power 6,821 78,737
sitting position, cm"., "Shuttle run 4x9 m, sec".
The level of mastering the exercises "Forward roll", "Backward roll", "Vault", "Climbing rope (three attempts)", "Bridge", "Stance on shoulder blades" statistically confidently increases with age (p<0,001) (see table 1).
Thus, in 11-13 yrs age boys we noted positive dynamic of physical condition, motor abilities and gymnastic
exercises' mastering level indicators.
For specifying motor fitness influence on physical exercises' mastering level we fulfilled factorial analysis.
Results of factorial analysis are given in tables 1-7. Inthe process of analysis in 11 yrs boys we marled out six factors, which explain 72,773% of total dispersion (see table 2-3).
Factor 1 has the highest weight (21,735%) and
correlates with the following tests' results:
• Climbing rope (three attempts), level of mastering.
• Vault, level of mastering,834.
• Backward roll, level of mastering, 778.
The factor was named level of mastering and motor fitness.
Factor 2 has weight 17,108% and correlates with the follwing results:
• Height, cm, 778.
• Body mass, kg, ,702.
The factor was named physical condition. Factor 3 has weight 13,390% and correlates with the following:
• Right hand dynamometry, kg - -,606.
• Left hand dynamometry, kg--,693.
The factor was named hand's strength.
Factor 4 has weight 8,954% and correlates with the followig:
• VCL, cm3 — ,741.
The factor was named functional state of respiratory system.
Factor 5 has weight 8,896% and correlates:
• Forward torso bending in sitting position (legs apart), cm— ,635.
• Shuttle run, 4x9 m, sec.— ,615.
The factor was named motor coordination. Factor 6 has weight 6,920% and correlates with the following tests' results:
Hanging on bent arms, sec.--,449.
The factor was named static power.
• Analysis of communities showed that in motor fitness structure of 11 yrs boys the biggest influence is rendered by: "Chin ups— ,897"; "Climbing rope (three attempts), level of mastering.
— ,860; "Hanging on bent arms,— ,854"; "Vault, level of matsrerig— ,815".
Analyzing 12 yrs boys we marked out 4 factors, which explain 74,607% of total indicators' dispersion (see table 4, 5).
Factor 1 has the highest weight (36,646%) and correlates with: .
• Backward roll, level of mastering— ,927.
• Forward roll, level of mastering— ,887.
• Climbing rope (three attempts), level of mastering -,858.
• Vault, level of matsrerig— ,806.
The factor was named level of mastering and motor fitness.
Factor 2 has weight— 14,067% and correlates with physical condition indicatotrs:
• Right hand dynamometry, kg — ,776.
• Left hand dynamometry, kg— ,729.
• VCL, cm3 — ,533.
The factor was named physical condition. Factor 3 has weight— 12,639% and correlates with the following:
• Long jump from the spot, cm— ,699.
• Angle on parallel bars, sec— ,665.
• Hanging on bent arms, sec.— ,629.
The factor was namedspeed power. Factor 4 has weight— 11,255% and correlates: Height, cm— ,821.
• Body mass,— ,703.
The factor was named physical condition. Analysis of communities showed that in motor fitness structure of 12 yrs boys the beggest influence is rendered by: "Backward roll, level of mastering— ,902"; "Chin ups, times— ,842"; "Forward roll, level of mastering — ,812".
Analyzing 13 yrs boys we marked out 5 factors, which explain 78,737% of total indicators' dispersion (see table 6, 7).
Factor 1 has the biggest weight (28,497%).and correlates with the following results:
• Forward roll, level of mastering — ,904.
• Backward roll, level of mastering — ,889.
• Vault, level of matsrerig — ,886.
• Climbing rope (three attempts), level of mastering — ,881.
The factor was named level of mastering and motor fitness.
Factor 2 has the biggest weight— 20,299% and correlates with the following results:
• Angle on parallel bars, sec — ,791.
• Leggs' rising on Sweden wall, times— ,766.
• Hanging on bent arms, sec— ,728.
The factor was named strength og abdomen muscles. Factor 3 has weight— 16,126% and correlates with the following:
• Left hand dynamometry, kg- ,950.
• Right hand dynamometry, kg — ,937.
• Body mass, kg — ,762.
• Height, cm— ,706.
The factor was named physical condition. Factor 4 has weight — 6,994% and correlates with the following results:
• Forward torso bending in sitting position (legs apart), cm— ,821.
The factor was named flexibility. Factor 5 has weight — 6,821% and correlated with the following tests' results:
Throw of filled (1 kg) ball from sitting position, cm — ,796.
The factor characterizes speed power. Analysis of communities showed that motor fitness of 13 yrs. boys is influenced to the largest extent: "Left hand dynamometry, kg — ,921"; "Vault, level of mastering— ,895"; "Stance on shoulder blades, level of mastering— ,917; "Forward roll, level of mastering — ,883".
Discussion
In our work we studied assumption about wholeness of motor abilities processes'development and training from prosition of systemic approach [3, 8]. We found that variation of results in total dispersion of 11-13 yrs boys by 72,773%, 74,607%, 78,737% depends on the regarded factors. Mastering level in factorial structure has weight 17,505% (11 years), 36,646% (12yeasr), 28,497% (13
years). Alnysis of communities showed that in 11-13 yrs boys develppment of motor abilities is effective is they are a component of the mastered motor skills.
The same dynamic of physical exercises mastering we observed in 11-13 yrs girls. We found that variation of results in total dispersion of 11-13 yrs girls by 81,259%, 79,353%, 71,019% is conditioned by the following factors: physical condition, level of motor abilities and level of physical exercises' mastering. In factorial structure level of physical exercises' mastering has weight 16,435% (11 years), 27,963% (12 years), 17,010% (13 years) [31].
In 11-13 yrs boys we observed higher contribution of mastering level in motor fitness structure.
The presented data supplements the results of Xu X. and Ke F. [30], Repko E. et al. [10], Khudolii O.M. et al. [28].
The conducted factorial analysis permitted to regard development of motor abilities and training as holistic process. It supplements the data of Ivashchenko O. et al. [21], Ivashchenko O. et al. [22] about effectiveness of factorial analysis application in physical education. Analysis of communities in factorial analysis permits to find the role of one or another indicator in factorial structure of the process. It points at demand in application of multidimensional mathematical statistic methods in studing of children's and adolescents' physical education laws [8, 24, 25, 33].
Conclusions
In 11-13 yrs boys we found positive dynamic of physical condition, indicators of motor abilities' development and mastering level of gymnastic exercises.
We found that variation of results in total dispersion of 11-13 yrs boys by 72,773%, 74,607%, 78,737% depends on the regarded factors. Mastering level in factorial structure has weight 17,505% (11 years), 36,646% (12yeasr), 28,497% (13 years). Analysis of communities in factorial analysis permits to find that in 11-13 yrs boys development of motor abilities is effectice if they are a component of the mastered mototr skills.
Acknowledgements
The study has been fulfilled in compliance with plan of scientific research works of Ministry of education and science, youth and sports of Ukraine by topic 13.04. "Modeling of training process and motor abilities' development in children and adolescents" (2013—2014) (state registration number 0113U002102).
Conflict of interests
The authors declare that there is no conflict of interests.
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Information about the authors:
Ivashchenko O.V.; http://orcid.org/0000-0002-2708-5636; tmfv@tmfv.com.ua; H.S. Skovoroda Kharkiv National Pedagogical University; Alchevskyh str. 29, Kharkiv, 61002, Ukraine.
Iermakov S.S.; http://orcid.org/0000-0002-5039-4517; sportart@gmail.com; Kazimierz Wielki University; Sport str. 2, of.209, 85-064 Bydgoszcz, Poland.
Khudolii O.M.; http://orcid.org/ 0000-0002-5605-9939; tmfv@tmfv.com.ua; H.S. Skovoroda Kharkiv National Pedagogical University; Alchevskyh str. 29, Kharkiv, 61002, Ukraine.
Cretu Marian; http://orcid.org/0000-0003-1934-0534; marian.cretu@efsupit.ro; University of Pitesti: Pitesti, arges, Romania; Str. Targul din Vale, nr.1, 110040 Pitesti, Arges, Romania.
Potop Vladimir; http://orcid.org/0000-0001-8571-2469; vladimir_potop@yahoo.com; Ecological University of Bucharest; Bulevardul General Vasile Milea 1G, Bucuresti 061341, Romania.
Cite this article as: Ivashchenko OV, Iermakov SS, Khudolii OM, Cretu M, Potop V. Level of physical exercises' mastering in structure of 11-13 yrs age boys' motor fitness. Pedagogics, psychology, medical-biological problems of physical training and sports, 2017;21(5):236-243. doi:10.15561/18189172.2017.0506
The electronic version of this article is the complete one and can be found online at: http://www.sportpedagogy.org.ua/index.php/PPS/issue/archive
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/deed.en).
Received: 11.06.2017
Accepted: 05.07.2017; Published: 25.09.2017
