INtErrELAtIoN BEtWEEN spEED ABILItY AND spEED strENGtH ABILI- TIES AND spEED ENDUrANCE oF 13-14 YEArs FootBALL pLAYErs petar peev, doctoral student

The level of development of the motor ability speed endurance substantially characterized motor profile of unspecific conditional training in football. On the basis of contingent of 54 footballers in age of !3-14 years are disclosed and explained
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  1007 9th FIEP European Congress and 7th Internaonal Scienc Congress „Sport, Stress, Adaptaon” INtErrELAtIoN BEtWEEN spEED ABILItY AND spEED strENGtH ABILI- TIES AND spEED ENDUrANCE oF 13-14 YEArs FootBALL pLAYErspea peev, dcal uden Naonal Sports Academ „Vasil Levski”, Soa, BulgariaDoctoral student in Track and eld DepartmentE - mail: Keyword  :  youth football, speed endurance, interrelaons, non specic condional training INTRODUCTIONIn general football can be referred to sports with intermient character [3, 4, 7, 8]. Game’s situaons are related with great demands of mobilit of the football plaers during the game [1, 4, 6, 7, 10]. Data from World cup in Brazil 2014 shows that the actual plaing me increases with approximatel 4 min - utes and also that the plaers were developed maximal speed between 19.8 km/h and 33.8 km/h. It is obvious that the game intensicaon grows up together with the non specic condional training. This placed on the agenda the guidelines for phased development of specic motor skills and abilies of the football plaers from earl childhood that was elaborated and proposed in “snergisc conceptual model” of non specic condional training in outh football [7].In this relaon the ue  of our stud is connected with opmizaon of non specic condional training via disclosing interrelaons of the abilies for displa of the speed endurance with speed abili - es and speed-strength abilies in outh soccer.In order to realize the purpose of the stud we point out following ak: Stud of variabilit of the indicators of speed endurance, speed and speed-strength motor abilies of 13-14 ears football plaers.Determinaon of their structural interrelaons.METHODSIn order to achieve our tasks we used following methods: chronometr, tensiometr, sports’ pedagogi - cal tesng, stain gauges and mathemacal stascs methods (Analsis of variance (ANOVA) and cor - relaon analsis). Tests that characterized studied special motor abilies and presence of performance we present in (Table 1). table 1. Tests that characterized studied special motor abilies and presence of performanceForms of performance on motor abiliesTest that characterized special motor abiliesMeasurementUnitsPrecisionSprint acceleraon abilies20 m running from standing posionsec.0,01Maximal speed abiliesFling 20 m runningsec. 0,01Speed-strength (power) abilies with explosive characterCoecient of explosiveness sm/sec0,001Abilit of performance on speed enduranceRepeated sprint 3 х 50 m from stand - ing posionsec.0,01 When we studied speed abilies and the resulng from them forms of displa, we used the following tests – 20 m running from standing posion and ing 20 m running. We use standard requirements for this kind of stud.  1008  POSTER SESSION Tesng the level of speed-strength (power) abilies with explosive character we realized b coecient of explosiveness (C exp. ) from digital jump counter (DJC-2). Indicaons (C exp.) for the lower limbs were collected automacall b the formula C exp.  = h m /t m . The equipment for measuring the explosiveness in vercal direcon includes: digital jump counter (DJC-2), which consist of microprocessor sstem with printer; tensiometric plaorm with rubber rings where the jumps are made which is connected with DJC-2. The algorithm for the operaons is set with keboard b prior prescripon. The level of development of the speed endurance which is one of the forms of displa of the specic endurance we tested b repeated sprints of 3x50 m from standing posion. The test is made aer mea - surement and labeling secon with two cones (the rst one at the start line and the second one at the nish line). Ever subject must pass them three mes. Methodical instrucons include maximal running and touch the cone with upper limb at the end of the secon with fast turning and change of the run - ning direcon. The me is measured ll 0.01 sec. with digital chronometer “Casio”.Conngent of the following stud are 54 football plaer of age from 13 to 14 ears.DISCUSSIONThe data from the ANOVA are presented at table 2. There we can see that for all of the studied indica - tors coecient of variabilit is in the limits of 3.88% to13.02%. This means that the conngent of the following stud is highl homogenous. This is a basis and expectaon for proper conclusions. table 2 . Variabilit of the indicators that characterized the motor abilies of 13-14 ears old football plaers    S   t   a      s      c   a    l   i   n    d   i   c   a   t   o   r   s Indica ha chaaceized baic m abilie20 m unning fm anding inFlying 20 m unningCecien f exlivenereeaed in 3x50m fm anding in (s)(s)(сm/s)(s) X 3,352,881,6826,77 m x 0,020,020,030,16 Me 3,342,901,6926,53 M 3,373,05#N/A25,39 S 0,130,160,221,16 A -0,500,22-0,900,26 E 0,03-0,090,110,80 R 0,520,780,835,19 x min 3,052,521,3224,98 x max 3,573,302,1530,17 V % 3,885,5613,024,33   On the basis of the gathered results from the variable analses, we disclosed correlave interrelaons between studied indicators. Their values are shown at (table 3). From the same one we see that the interrelaon between special acceleraon abilies and abilit for speed endurance is directl propor - onal and signicant b level of signicance (r=0.663). In the same me interrelaon between maximal speed abilies and abilit for displa of speed endurance directl proporonal and high b signicance (r=0.817).Directl proporonal interrelaon shows that when we increase the level of maximal speed abilies of the subjects this aects to the level of speed endurance. From the correlave matrix we can see that this indicator has the biggest aecon on displa of the speed endurance. Coecient of correlaon between abilit of displa of speed endurance and speed-strength abilies with explosive character e r= -0.543. This coecient determines that the interrelaon is signicant b  1009 9th FIEP European Congress and 7th Internaonal Scienc Congress „Sport, Stress, Adaptaon” signicance and inverse. This means that bigger values of the coecient for explosiveness (C exp. ) will cooperate for achieving increasing the level of speed endurance. table 3. Celave ineelan beween indica chaaceized m abilie The analysis of the values of the coefcient (C exp. ) with the two indicators that reect speed abilities shows that interrelation for them is signicant and inversed. The means of start accelerative abilities and maximal speed abilities are respectively r= -0.508 and r= -0.561. It is obvious that this interrelation affects indirectly to the speed endurance via inuence over level of development of maximal speed and start acceleration [2, 5]. It was disclosed signicant by signicance and directly proportional correlative interrelation between special speed abilities and specic start acceleration abilities (r=0.623) shows that this two forms of speed  performance are affected each other. It is obvious that the studied two forms of speed performance are essential for development of the ability of performance of speed endurance and non specic conditional training as a whole in this period of development. CONCLUSIONSThe data from the stud are basis for the following conclusions which are connected with the abilit of displa of the speed endurance for 13-14 ears old football plaers.• The level of speed endurance greatl depends of the level of development of the individual forms of speed abilies• Speed-strength abilies with explosive character aects indirectl displa of the speed endur - ance with increasing the level of speed abilies.REFERENCES 1. Bachev, V., Foundlings in scienc researches in sport, S., Es - print, 20112. Bachvarov, M., L. Dimitrov, A.Gigov, The football- pressing, condioning, pressure , S., NSA Press, 20083. Bachvarov, M., The football – integrated phsical condion, S., NSA Press, 2008, 19994. Bangsbo, J, M. Mohr, P. Krustrup, Phsical and metabolic demands of training and match-pla in elite football plaers, Journal of Sports Sciences, Copenhagen, Jul 2006; 24(7), pp. 665 – 6745. Chamari, К., y. Hachana, y. B. Ahmed, O. Gal, F. Sghaı¨er, J-C. Chatard, O. Hue, U. Wisløff, Field and laborator testing in oung elite soccer plaers, Br J Sports Med. 2004;38, pp. 191–196 6. Cherveniakov, M., The football (quesons of sports improvement), S., Ецнпкфкс, 19797. Gadev, M., Theorecal founding and methodological aspects of non specic condional training in outh football,SС., Doctorate, 2013, p. 3118. Geshev, P., N. Hadjiev, Sports Biomechanics, S., NSA Press , 20119. Godik , M., A. Shishkov, Control and management of training loads in football, S., МФ,1983, p. 27710. Kirkendall, T., H. O’Malle, Field assessment of tness for soccer: a stud of highl skilled outh and naonal team members, Revista de Fútbol  Ciencia Vol. 1 No. 1, 2002.
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