Progressivity of Basic Elements of the Slovenian National Alpine Ski School

Progressivity of Basic Elements of the Slovenian National Alpine Ski School Ski school programmes in different countries are adapted to the local conditions and skiing trends. The aim of the study was to establish the progressivity of the three basic elements of the Slovenian ski school in terms of the duration of individual turns and their phases. Eight participants were recorded as they performed three basic elements of the Slovenian national ski school: wedge curves – E1, turns with a wedge push-off – E2 and basic swinging – E3. According to the ski school, the elements were divided into phases. The results of the computer-aided video analysis showed that in the beginning types of skiing in the same conditions on the same length of terrain, the average durations of turns and the times of comparable initiation and steering phases of the elements shortened on the methodical upward scale (from E1 to E3). The number of turns executed on the same length of terrain from E1 to E3 increased. A larger step in motor task complexity was indicated when a pole plant was included in skiing elements. Further, relatively large differences were observed in time durations among subjects executing the same elements. In conclusion, it can be assessed that the basic elements of the ski school are placed gradually in terms of progressivity in time durations. Progresivita základních elementů slovinské národní školy alpského lyžování Programy lyžařských škol v různých zemích jsou přizpůsobeny místním podmínkám a lyžařským trendům. Cílem této studie bylo stanovit progresivitu tří základních prvků slovinské lyžařské školy, pokud jde o dobu trvání jednotlivých zatočení a jejich fází. U osmi účastníků bylo zaznamenáno, jak provádějí tři základní prvky ze slovinské národní lyžařské školy: E1 – oblouk z pluhu; E2 – oblouk z přívratu vyšší lyží E3 – paralelní oblouk. Podle lyžařské školy byly prvky rozděleny do fází. Výsledky počítačové video- analýzy ukázaly, že na začátku lyžování za stejných podmínek a stejné délky terénu, je průměrná doba zatáčení a časů srovnatelného zahájení a řízení fází, jsou tyto prvky dle metodické vzestupné škály zkráceny (od E1 po E3). Počet zatočení provedených na stejné délce terénu se zvýšil; od E1 po E3. Delší pokrok byl v motorické komplexnosti úlohy, indikován při jejich začleněného do lyžařských prvků. Poměrně velké rozdíly mezi subjekty, které prováděli stejné prvky, byly zaznamenány v době jejich trvání. Na závěr lze usuzovat, že základní prvky lyžařské školy jsou postupně z hlediska progresivity podle času jejich trvání, implementovány.

1. Agrawal, R., Kumar, A. (1993). The relationship between intelligence and reaction time as a function of task and person variables. Personality and Individual Differences, 14(1), 287–288. CrossRef

2. Aschauer, E., Ritter, E., Resch, H., Thoeni, H., Spatzenegger, H. (2007). Injuries and injury risk in skiing and snowboarding. Unfallchirurg, 110(4), 301–307. CrossRef PubMed

3. Bailey, P. W., Boon, A. J., Watson, E. J. (2009). Skiing and snowboarding injuries. In R. M. Buschbacher, N. Prahlow, S. J. Dave (Eds.), Sports Medicine & Rehabilitation. A Sport-Specific Approach, Second Edition, pp. 175–190. Philadelphia, PA: Lippincott, Williams & Wilkins. PubMed

4. Bere, T., Flørenes, T. W., Krosshaug, T., Koga, H., Nordsletten, L., Irving, C., Mueller, E., Reid, R. C., Senner, V., Bahr, R. (2011). Mechanisms of anterior cruciate ligament injury in World Cup alpine skiing: A systematic video analysis of 20 cases. American Journal of Sports Medicine, 39(7), 1421–9. CrossRef PubMed

5. Blitzer, C. M., Johnson, R. J., Ettlinger, C. F., Aggeborn, K. (1984). Downhill skiing injuries in children. American Journal of Sports Medicine, 12(2), 141–147. CrossRef

6. Brodie, M., Walmsley, A., Page, W. (2008). Fusion motion capture: A prototype system using inertial measurement units and GPS for the biomechanical analysis of ski racing. Sports Technology, 1(1), 17–28. CrossRef

7. Hotter, B., Lee, A., Nachbauer, W. (2008). Effects of modern ski equipment on the overall injury rate and the pattern of injury location in alpine skiing. Clinical Journal of Sport Medicine, 18, 355–357. CrossRef

8. Christina, R. W., Rose, D. J. (1985). Premotor and motor reaction time as a function of response complexity. Research Quarterly for Exercise and Sport, 56(4), 306–315. CrossRef

9. Colbeck, S. C. (1994). A review of the friction of snow skis. Journal of Sports Sciences, 12(3), 285–295. CrossRef PubMed

10. Coupe, R. (2008). An investigation comparing the efficacy of different lubricants for skis on artificial snow. The ACES Journal of Undergraduate Research, 1(1). Retrieved 20 May 2013 from http://research.shu.ac.uk/aces/enquiry/index.php/enquiry/article/view/10/16.

11. Danthir, V., Roberts, R., Schulze, R., Wilhelm, O. (2005). Mental speed. On frameworks, paradigms, and a platform for the future. In Wilhelm, O. & Engle, R. W. (Eds.), Handbook of understanding and measuring intelligence, pp. 27–45. Thousand Oaks: Sage Publications, Inc. CrossRef

12. Deary, I. J., Der, G., Ford, G. (2001). Reaction times and intelligence differences. A population-based short study. Intelligence, 29(5), 389–399. CrossRef

13. Dosil, J. (2006). The sport psychologist's handbook: A guide for sport-specific performance enhancement. Chichester: John Wiley & Sons Ltd.

14. Endsley, M. R. (2006). Expertise and situational awareness. In Ericsson, K.A., Charness, N., Fletovich, P. J. & Hoffman, R. R. (Eds.). The Cambridge handbook of expertise and expert performance, pp. 633–651. Cambridge: Cambridge University Press. CrossRef

15. Ettlinger, C. F., Johnson, R. J., Shealy, J. E. (2006). Functional release characteristics of alpine ski equipment. In R. J. Johnson, J. E. Shealy, T. Yamagishi (Eds.), Skiing Trauma and Safety. 16th Volume, pp. 65–74. Danvers MA: American Society for Testing and Materials International. CrossRef

16. Favilla, M. (2002). Reaching movements: Programming time course is independent of choice number. Experimental Brain Research, 144(3), 414–418. CrossRef PubMed

17. Federolf, P., Roos, M., Lüthi, A., Dual, J. (2010). Finite element simulation of the ski snow interaction of an alpine ski in a carved turn a carving snow ski. Sports Engineering 12 (3), 123–133. Retrieved 25 May 2013 from http://link.springer.com/article/10.1007/s12283–010–0038-z#page-1. CrossRef

18. Federolf, P., Scheiber, P., Rauscher, E., Schwameder, H., Lüthi, A., RHYNER, H.-U., Müller, E. (2008). Impact of skier actions on the gliding times in alpine skiing. Scandinavian Journal of Medicine & Science in Sports, 18, 790–797. CrossRef PubMed

19. FISI (2010). Sci Italiano. Offizieller Lehrplan für den Unterricht Ski Alpin. Torino: FISI – Italienische Wintersportverband. Gamma, K. (1985). Ski Schweiz. Derendingen: Habegger Verlag.

20. Garrett, W. E., Kirkendall, D. T. (2000). Exercise and sport science. Philadelphia: Lippincott, Williams & Wilkins.

21. Goulet, C., Regnier, G., Grimard, G., Valois, P. & Villeneuve, P. (1999). Risk factors associated with alpine skiing injuries in children: A prospective case control study. American Journal of Sports Medicine, 27(5), 644–650. PubMed

22. Gustyn, M. (2012). The impact of ankle joint stiffening by ski equipment on maintenance of body balance, The impact of ski equipment on body balance. Polish Journal of Sport and Tourism, 19(3), 168–172. CrossRef

23. Heikkinen, D. (2003). Physical testing characteristics and technical event performance of junior alpine ski racers. Farmington: University of Maine.

24. Henry, F. M., Rogers, D. E. (1960). Increased response latency for complicated movements and a "memory drum" theory of neuromotor reaction. Research Quarterly of the American Association for Health, Physical Education, & Recreation, 31, 448–458. CrossRef

25. Hertenstein, J. M., Weiss, J. S. (2011). The handbook of touch. Neuroscience, behavioral and health perspectives. New York: Springer publishing company, LLC.

26. Hildebrandt, C., Mildner, E., Hotter, B., Kirschner, W., Höbenreich, C., Raschner, C. (2011). Accident prevention on ski slopes – Perceptions of safety and knowledge of existing rules. Accident Analysis & Prevention, 43(4), 1421–6. CrossRef PubMed

27. Hunter, R. (1999). Skiing injuries. American Journal of Sports Medicine, 27(3), 381–389. PubMed

28. Jensen, A. R., Munro, E. (1979). Reaction time, movement time, and intelligence. Intelligence, 3(2), 121–126. CrossRef

29. Jentschura, U. D., Fahrbach, F. (2004). Physics of skiing: The ideal-carving equation and its applications. Canadian Journal of Physics, 82(4), 249–261. CrossRef

30. Johnson, R. J., Ettlinger, C. F., Shealy, J. E., Meader, C. (1997). Impact of super sidecut skis on the epidemiology of skiing injuries. Sportverletz Sportschaden, 11(4), 150–152. CrossRef PubMed

31. Kawato, M., Gomi, H. (1992). A computational model of four regions of the cerebellum based on feedbackerror learning. Biological Cybernetics, 68(2), 95–103. CrossRef PubMed

32. Knudson, D. V. (2013). Qualitative diagnosis of human movement. Improving performance in sport and Exercise. 3rd Edition. Champaigne, IL: Human Kinetics.

33. Lešnik, B., Žvan, M. (2010). A turn to move on: Alpine skiing – Slovenian way, Theory and methodology of alpine skiing. Ljubljana: Faculty of Sport and Ski Instructors Association of Slovenia.

34. Light, K. E., Spirduso, W. W. (1990). Effects of adult aging on the movement complexity factor of response programming. The Journal of Gerontology, 45(3), 107–109. CrossRef

35. Memmert, D, Simons, D. J., Grimme, T. (2009). The relationship between visual attention and expertise in sports. Psychology of Sport and Exercise, 10(1), 146–151. CrossRef

36. Meyers, M. C., Laurent, M., Higgins, R. W., Skelly, W. A. (2007). Downhill ski injuries in children and adolescents. Sports Medicine, 37(6), 485–499. CrossRef PubMed

37. Mildner, E., Barth, M., Ehn, G., Kriebernegg, R., Staudacher, A. & Rashner, C. (2012). Relationship between physical fitness, ski technique and racing results of young alpine ski racers. In E. Müller, S. Lindinger, T. Stöggl (Eds.), Science in skiing V, pp. 282–291. Maidenhead: Meyer & Meyer sport (UK) Ltd.

38. Molteni, E., Cimolin, V., Preatoni, E., Rodano, R., Galli, M., Bianchi, A. M. (2012). Towards a biomarker of motor adaptation: Integration of kinematic and neural factors. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 20(3), 258–267. CrossRef PubMed

39. Müller, E. (1994). Analysis of the biomechanical characteristics of different swinging techniques in alpine skiing. Journal of Sports Sciences, 12(3), 261–278. CrossRef PubMed

40. Müller, E., Bartlett, R., Raschner, C., Schwameder, H., Benko-Bernwick, U., Lindinger, S. (1998). Comparison of the ski turn techniques of experienced and intermediate skiers. Journal of Sport Sciences, 16, 545–559.

41. Müller, E., Benko, U., Raschner, C., Schwameder, H. (2000). Specific fitness training and testing in competitive sports. Medicine and Science in Sports and Exercise, 32(1), 216–220. CrossRef PubMed

42. Nachbauer, W., Kaps, P., Nigg, B. M., Brunner, F., Lutz, A., Obkircher, G., Mössner, M. (1996). A video technique for obtaining 3-D coordinates in alpine skiing. Journal of Applied Biomechanics, 12, 104–115. CrossRef

43. Neumayr, G., Hoertnagl, H., Pfister, R., Koller, A., Eibl, G., Raas, E. (2003). Physical and physiological factors associated with success in professional alpine skiing. International Journal of Sports Medicine, 24, 571–575. CrossRef PubMed

44. Noé, F., Paillard, T. (2005). Is postural control affected by expertise in alpine skiing? British Journal of Sports Medicine, 39, 835–837. CrossRef PubMed PubMed Central

45. Petrovič, K., Šmitek, J., Žvan, M. (1984). The path to success. Ljubljana: Mladinska knjiga International. PubMed Central

46. Ruedl, G., Pocecco, E., Sommersacher, R., Gatterer, H., Kopp, M., Nachbauer, W., Shealy, J. E., Ettlinger, C. F., Johnson, R. J. (2005). How fast do winter sports participants travel on alpine slopes? Journal of ASTM International, 2(7), 401–408. PubMed Central

47. Burtscher, M. (2010). Factors associated with self-reported risk-taking behaviour on ski slopes. British Journal of Sports Medicine, 44(3), 204–206. CrossRef PubMed PubMed Central

48. Schmidt, R. A., Lee, T. D. (2005). Motor control and learning: A behavioural emphasis. Champaign, IL: Human Kinetics. CrossRef PubMed Central

49. Shumway-Cook, A., Woollacott, M. (2000). Motor control: Theory and practical applications, Second edition. Baltimore, MD: Lippincott Williams & Wilkins. PubMed Central

50. Summers, J. J., Anson, J. G. (2009). Current status of the motor program: revisited. Human Movement Science, 28, 566–577. CrossRef PubMed PubMed Central

51. Supej, M., Kugovnik, O., Nemec, B. (2002). New advances in racing slalom technique. Kinesiologia Slovenica, 8(1), 25–29. PubMed Central

52. Supej, M., Kugovnik, O., Nemec, B. (2003). Kinematic determination of the beginning of a ski turn. Kinesiologia Slovenica, 9(1), 11–17. PubMed Central

53. Vaverka, F., Vodičkova, S., Elfmark, M. (2012). Kinetic analysis of ski turns based on measured ground reaction forces. Journal of Applied Biomechanics, 28(1), 41–47. CrossRef PubMed PubMed Central

54. Veselko, M., Polajnar, J. (2008). New skiing techniques – new injuries? Analysis of ski injuries in 2004/2005. Zdravniški vestnik, 77(8), 499–504. PubMed Central

55. Weinberg, R. S., Gould, D. (2011). Foundations of sport and exercise psychology. 5th edition. Champaigne, IL: Human Kinetics. CrossRef PubMed Central

56. Winter, D. A. (2009). Biomechanics and motor control of human movement. Fourth edition. New Jersey: John Wiley & Sons. CrossRef PubMed Central

57. Wörndle, W. (2007). Alpiner Skilauf. In R. Walter (Eds.), Snowsports Austria – Die Österreichische Skischule, 2. neu berarbeitete Auflage, pp. 33–138. Purkersdorf: Verlag Brüder Hollinek. PubMed Central

58. Žvan, M., Lešnik, B., Supej, M. (2012). Differences in the performance of ski elements carried out by top demonstrators. In E. Müller, S. Lindiger & T. Stöggl (Eds.), Science in skiing V., pp. 473–480. Maidenhead: Meyer & Meyer sport (UK) Ltd. PubMed PubMed Central