[1. Vystrčilová M., Kračmar B. (2007). The new view on human physical activity - III Walking. Physical Education and Sport of the Youth 73, 5. [in Czech]]Search in Google Scholar
[2. Junger J. (2007). Self-preservation, or what is seen and what is not. The Academic Journal PU in Prešov 11(2), 3. [in Slovak]]Search in Google Scholar
[3. Brindza J. (2000). Children’s leisure time and its place in shaping their way of life. Family and School 48(8), 12. [in Slovak]]Search in Google Scholar
[4. Hošek V. (1995). Interest in exercise and school physical education. Sport Education and Youth Sport 61(4), 11-13. [in Czech]]Search in Google Scholar
[5. Jurašková Ž. (2001). Leisure time activities as a universal way of preventing medical abnormalities. Doctoral thesis, University of Presov, Prešov. [in Slovak]]Search in Google Scholar
[6. Liba J. (1999). The potential of school in preventing muscle imbalance and poor body posture. In J. Novotný, J. Pavlík, P. Kotyza, P. Krátký (eds), Health-oriented physical education at elementary school (pp. 170-173). Brno: PF MU. [in Czech]]Search in Google Scholar
[7. Novotná N. et al. (2009). Exercise programmes for younger school-age pupils in the Banská Bystrica region as a determinant of their health. Banská Bystrica: KTVŠ FHV UMB. Retrieved January 11, 2015, from http://www.ff.umb.sk/app/cmsFile.php?disposition=a&ID=9797. [in Slovak]]Search in Google Scholar
[8. Čillík I., Čillíková A. (2004). Stimulating younger schoolage children to be physically active. In Exercise, sport, health (p. 120). Banská Bystrica: UMB FHV, KTVa Š, Science company for physical training and sport. [in Slovak]]Search in Google Scholar
[9. Junger J. (2000). Physical and motor development of preschool- age children. Prešov: FHPV PU. [in Slovak]]Search in Google Scholar
[10. Medeková H., Zapletalová L. (2006). Developmental changes in somatic characteristics of children in terms of physical activity in early childhood. In P. Mačura (ed.), Selected aspects of physical activity (pp. 88-93). Bratislava: FTVŠ. [in Slovak]]Search in Google Scholar
[11. Miklánková L. (2004). Incentives for social participation in younger school-age children. In Report of the International Conference on Sport and Quality of Life, March 2004, (p. 61). Brno: FsPS MU. Retrieved March 28, 2014, from http://elearning.ktvs.pf.ukf.sk/publikacie/zbornik.pdf.]Search in Google Scholar
[12. Goran M.I. (1999). Visceral fat in prepubertal children. Influence of obesity, anthropometry, ethnicity, gender, diet, and growth. American Journal of Human Biology 11, 201-20.10.1002/(SICI)1520-6300(1999)11:2<201::AID-AJHB8>3.0.CO;2-R]Search in Google Scholar
[13. Pařízková J. (1994). Effect of physical education on growth and movement development in preschool children. In Child - movement - family (pp. 19-23). Prague: ASPV. [in Czech]]Search in Google Scholar
[14. Dobrý L. (2008). Knowledge of the health benefits of physical activity among youth - a starting point for changing the concept of physical education and sport of youth. Physical Education and Sport of Youth 74(1), 12-18. [in Czech]]Search in Google Scholar
[15. Žiga L. (1993). Didactics of school physical education for the first stage of primary school. Prešov: PF. [in Slovak]]Search in Google Scholar
[16. Lehocký D. (2010). The negative evolution of the young generation’s attitude to movement and sport after reforms in education. In 1st Scientific Conference “Physical education - Methods of engaging the young generation in movement and sport”, September 7, 2010. Zvolen: UTVS TU. [in Slovak]]Search in Google Scholar
[17. Kadlecová D. (2011). Kinesiotherapy in the prevention of defective posture among school-age children. Ošetrovateľský Obzor 4-5, 1-13. Retrieved November 2, 2014, from http:// www.osetrovatelsky.herba.sk/4-5-2010/kinezioterapia-vprevencii-chybneho-drzania-tela-u-deti-skolskeho-veku/pdf. [in Slovak]]Search in Google Scholar
[18. Kratěnová J., Žejglicová K. (2007). Children’s poor body posture. Prague: SZU. Retrieved November 26, 2014, from http://www.szu.cz/tema/prevence/vadne-drzeni-tela-udeti. [in Czech]]Search in Google Scholar
[19. Liba J. (1999). Physical activities and their place in students’ interest preferences. In Collection of post-conference materials from the 5th Scientific Conference “Healthy school”, December 1999 (pp. 44-51). Prešov: MC. [in Slovak]]Search in Google Scholar
[20. Mikuľáková W., Trustová A. (2009). Defective posture and somatic characteristics in school age children. In 1st International Conference “Healthy lifestyle in the context of education and training in schools”, April 24, 2010 (pp. 54-61). Prešov: Katedra fyzioterapie, FZ PU. Retrieved January 7, 2015, from http://www.skolskyurad.presov.sk/portal/content/article/file/00000325/zbornik.pdf. [in Slovak]]Search in Google Scholar
[21. Thurzová E. (1991). Functional muscle disorders in the paediatric population. Telesnávýchova a Šport 1, 23-28. [in Slovak]]Search in Google Scholar
[22. Vojtašák J. (1985). Posture in kindergarten children and primary school children. Rehabilitation 18(2), 99-102. [in Slovak]]Search in Google Scholar
[23. Bursová M. (2005). Corrective exercises. Prague: Grada. [in Czech]]Search in Google Scholar
[24. Čermák J. et al. (2005). My back does not hurt anymore. Prague: Vašut. [in Czech]]Search in Google Scholar
[25. Dobešová P., Dobeš M. (2006). Fundamentals of health exercise. Ostrava: Domiga. [in Czech]]Search in Google Scholar
[26. Kanásová J. (2012). Stretching exercises to restore muscle balance I. Športový Edukátor 6(1), 20-27. [in Slovak]]Search in Google Scholar
[27. Drápelová E. (2010). Fundamentals of diagnostics and therapy of functional disorders of the musculoskeletal system. Brno: LF MU. [in Czech]]Search in Google Scholar
[28. Kaltenborn F.M. (2012). Manual mobilization of the joints. The spine. Vol. II (6th ed.). Oslo: Norli.]Search in Google Scholar
[29. Alter M.J. (1999). Stretching. Prague: Grada. [in Czech]]Search in Google Scholar
[30. Sedláček J., Lednický A. (2010). Fitness athletic preparation. Selected chapters. Bratislava: Slovak Scientific Society for Physical Education and Sport. [in Slovak]]Search in Google Scholar
[31. Janda V. et al. (2004). Muscle functional tests. Prague: GRADA. [in Czech]]Search in Google Scholar
[32. Tichý M. (2000). Functional diagnostics of the musculosceletal system. Prague: TRITON. [in Czech]]Search in Google Scholar
[33. Gajda V. (2006). Basic statistics based on examples. Ostrava: Pedagogická fakulta. [in Czech]]Search in Google Scholar
[34. Boržíková I. (2006). Diagnosing motor capacity in school physical education. In Anthology of works from scientific and educational conference of PE teachers, Minerva. Prešov: MPC. [in Slovak]]Search in Google Scholar
[35. Brtková M. (1999). Physical activity and civilization diseases. In Anthology of works from the 5th Scientific Conference “Healthy school” (pp. 60-65). Prešov: Metodické Centrum. [in Slovak]]Search in Google Scholar
[36. Chovanová E. (2005). Research on the motoricity of young school-age children. Acta Universitatis Matthiae Belii, Physical Education and Sport 6(6).]Search in Google Scholar
[37. Chovanová E. (2006). Motor skills in younger school-age children. In Anthology from the 5th Annual International Conference “Physical education and sport in universities”. Nitra: SPU v Nitre, FZ a KI. [in Slovak]]Search in Google Scholar
[38. Oliver M., Schofield G.M., Kolt G.S. (2007). Physical activity in preschoolers: Understanding prevalence and measurement issues. Sports Medicine 37(12), 1045-1070.10.2165/00007256-200737120-00004]Search in Google Scholar
[39. Reillz J.J. (2008). Physical activity, sedentary behaviour and energy balance in the preschool child: Opportunities for early obesity prevention. Proceedings of the Nutrition Society 67(3), 317-325.10.1017/S0029665108008604]Search in Google Scholar
[40. Tucker P., Gilliland J. (2008). The physical activity levels of preschool-aged children: A systematic review. Early Childhood Research Quarterly 23(4), 547-558.10.1016/j.ecresq.2008.08.005]Search in Google Scholar
[41. Wards D.S., Vauhn A., McWilliams C., Hales D. (2010). Interventions for increasing physical activity at child care. Medicine and Science in Sports and Exercise 42(3), S. 526-534.10.1249/MSS.0b013e3181cea406]Search in Google Scholar
[42. World Health Organization. (2010). Global recommendations on physical activity for health. Switzerland: WHO Press. Retrieved June 22, 2014, from http://www.who.int/dietphysicalactivity/publications/9789241599979/en/.]Search in Google Scholar
[43. Thurzová E., Kováčová E., Medeková H. (1993). Development of functional muscular disorders in younger school age children. Rehabilitation 26(3), 153-156. [in Slovak]]Search in Google Scholar
[44. Vidal J., Borras P.A., Ortega F.B., Cantallo P.S., Ponseti X., Palou P. (2011). Effects of postural education on daily habits in children. International Journal of Sports Medicine 32(4), 303-308.10.1055/s-0030-1270469]Search in Google Scholar
[45. Struhár I. (2015). Comparison of the effectiveness of corrective exercises and exercises of spiral stabilisation of the spine in influencing muscle imbalance in school-age children. Doctoral thesis, Masaryk University, Brno. [in Slovak]]Search in Google Scholar
[46. Heyman E.E., Dekel H.H. (2008). Ergonomics for children: An educational program for elementary school. Work 31(2), 253-257.]Search in Google Scholar