INFLUENCE OF SPEED-STRENGTH TRAINING INDICATORS ON THE SPEED OF MOVEMENT IN HIGHLY QUALIFIED CROSS-COUNTRY SKIERS

The purpose of the research is to determine the influence of the level of development of special physical qualities on the sports results of highly qualified cross-country skiers through testing with the means of general physical training and special physical training, measuring maximum and explosive strength using the method of dynamography and tensometry.

Methods and organization of the research. The study involved 18 cross-country skiers, masters of sports aged 20-25, all of whom are active athletes, who were tested in general physical training exercises: standing long jump, 10-fold multi-jump based on the result and time of execution, push-ups for 20 seconds for the number of times and measurement of the maximum and explosive strength of the legs, arms using dynamography and tensometry.

Research results and their discussion. The importance of speed-strength training in sports associated with the advantage of endurance is undoubtedly, and the study of quantitative and qualitative characteristics of speed-strength work is becoming increasingly important. We have attempted to establish the influence of various indicators characterizing the speed-strength training of an athlete: general physical training tests, measuring the strength of various body parts using tensometry, dynamography, the time it takes to achieve it on the speed of highly skilled cross-country skiers. The study involved 18 cross-country skiers, masters of sports. As a result of the research, it was determined that the speed of the general speed-strength training most significantly depends on a variety of gradients of muscle strength of the upper and lower extremities (strength / time) with a predominant value of the time to achieve strength and on the indicators associated with various manifestations of speed-strength capabilities, including: the length of a standing jump, the speed of movement and the result in a 10-fold jump (multi-jump), the number of push-ups in a prone position in 20 seconds [1]. 

1. Verkhoshansky Yu.V. (1988), Basics of special physical training of athletes, Physical education and sports.

2. Grushin A.A., S.V. Nageikina, A.V. Lunina (2020), “Standardization of the training load and its intensity in the annual macrocycle”, Materials of the V All-Russian Scientific and Practical Conference of Ski coaches “Topical issues of training highly qualified cross-country skiers”. Edited by Ph.D., Professor Ermakov, Doctor of Pedagogical Sciences, Associate Professor A.V. Gursky. - Smolensk, SGAFKST, pp. 67-78.

3. Golovachev A.I. Modern methodological approaches to monitoring physical fitness in cross-country skiing / A.I. Golovachev, V.I. Kolykhmatov, S.V. Shirokova // Bulletin of Sports Science. - 2018, No. 4 (122). – pp. 139-144.

4. V.V. Ermakov, A.V. Gursky (2017) “Biodynamics of motor actions of cross-country skiers” Monograph. – Smolensk, SGAFKST.

5. Nikolaev A.A., Strength development in athletes: Coach's library / A.A. Nikolaev, V.G. Semenov. – M: Sport, 2018.

6. Skatebo, O. Upper body heavy strength training does not affect performance in junior female cross-country skiers, O. Skatebo, J. Hallen, B. Ronnestad, T. Losnegard. Scand. Journal of Med. Sci. Sports. 2015, 22, pp. 1007-1016.

7. Losnegard T. Strength training for cross-country skiers // Thomas Losnegard. - Norwegian School of Sport Sciences, Oslo, Norway. – 2019. – 26 p.

8. Roberts M.D. Skeletal muscle mitochondria volume and myozenin-l protein differences exist between high versus low anabolic responders to resistance training / M.D. Roberts, M.A. Romero, C.B. Mobley, P.W. Mumford, P.A. Roberson, C.T. Haun, G.G. Vann, S.C. Osburn, H.H. Holmes, R.A. Greer, C.M. Lockwood, H.A. Parry, A.N. Kavazis // Peer J. – 2018. – Vol. 36. – P. e5338.

9. Reidy P.T. Protein composition of endurance trained human skeletal muscle / P.T.Reidy, J.M. Hinkley, T.A. Trappe, S.W. Trappe, M.P. Herber // Int. J. Sports Med. – 2014. – Vol. 35. – № 6. – P. 476-481.

10. Friedmann-Bette B. Effects of strength training with eccentric overload on muscle adaptation in male athletes / B. Friedmann-Bette, T. Bauer, R. Kinscherf, S. Vorwald, K. Klute, D. Bischoff, H. Müller, M.-A. Weber, J. Metz, H.-U. Kauczor, P. Bärtsch, R. Billeter // Eur. J. Appl. Physiol. – 2010. – Vol. 108. – № 4. – P. 821-836.

11. Van der Zwaard S. Why muscles matter: optimizing sprint and endurance performance in athletes. PhD Thesis. Vrije Universiteit Amsterdam, 2018. – 208 p.