IMPROVING SPEED ENDURANCE IN HIGHLY QUALIFIED FEMALE RUNNERS THROUGH THE USE OF UPHILL AND DOWNHILL RUNNING IN MIDDLE MOUNTAIN CONDITIONS

The purpose of the research is to compare the effectiveness of using various combinations of two training means “uphill running” and “downhill running” to improve the speed endurance of long-distance runners in mid-altitude conditions.

Methods and organization of the research. The study involved 4 highly qualified athletes (3 – international masters of sports, 1 – master of sport), specializing in long-distance running. The pedagogical experiment was carried out during a training event (TE) lasting 4 weeks in the middle mountains. 6 workouts were conducted: 3 workouts consisted of a combination of downhill and uphill running (“down-up”), and 3 workouts consisted of a combination of uphill and downhill running (“up-down”). For the study, a 1000 m long inclined section of the route with an uneven slope in the range of 2.9-3.8º, with a good asphalt surface, was chosen. In the study, the following parameters were recorded during training sessions: time to run a segment, step frequency, long step length, long stride time, blood lactate concentration, pulse value of the exercise separately by segments and in total in a series without taking into account rest time.

Research results and their discussion. To develop speed endurance in mid-mountain conditions, it is proposed to use interval training on an inclined plane (natural terrain), while using combinations of “uphill running-downhill running” (up-down) or “downhill running-running uphill” as a means. (down-up) with little rest time between segments. The study found that the sum of the time for performing the “up-down” combination is less than the time for performing the “down–up” combination by 16 seconds (4%), the pulse value is 9% lower (91 beats). At the same time, the sum of the blood lactate concentration with the “up-down” combination was 67.4 mmol/l versus 49.5 mmol/l shown in the “down-up” combination.

Conclusion. The results of the study showed that using a combination of uphill and downhill running in the “updown” order is preferable, since downhill running in the second part of the running series has a beneficial effect on running technique and, as a result, on running economy. In addition, the power and capacity of anaerobic glycolysis are complementary characteristics, but it is the manifestation of maximum power that contributes to the development of the reserve glycolytic apparatus. However, to solve certain tactical and technical problems, these training tools are complementary to improve the speed endurance of long-distance runners.

• Volkov, N. I. Bioenergetics of sports: monograph / N. I. Volkov, V. I. Oleinikov.- M.: Soviet sport. – 2011. – 160 p.
• Tambovtseva, R. V. The use of a combined combination of hypoxic hypoxia with repeated and interval loads to increase the physical performance of athletes / R. V. Tambovtseva // Problems and prospects of physical culture and sports. – Federal State Budgetary Educational Institution of Higher Education Siberian State University of Physical Culture. – Omsk. – 2018. – pp. 89-92.
• Beattie, K. The effect of strength training on performance indicators in distance runners / K. Beattie, B. P. Carson, M. Lyons, A. Rossiter, I. C. Kenny // The Journal of Strengh & Conditioning Research. – 2017. – T. 31, № 1. – P. 9-23.- DOI: 10.1519/JSC.0000000000001464.
• Breiner, T. J. Level, uphill and downhill running economy values are strongly inter-correlated / T. J. Breiner, A. L. R. Ortiz, R. Kram / Eur J Appl Physiol. – 2019. – 119(1) – P. 257-264.
• Davis, J. A. Anaerobic threshold: review of the concept and directions for future research / J. A. Davis // Journal Medicine Science Exerc. – 1985. – V.17, №1. – Р. 6-18.
• Douglas, J. Eccentric exercise: physiological characteristics and acute responses / J. Douglas, S. Pearson, A. Ross, M. McGuigan / Sports Med. – 2017. – 47(4). – P. 663-675.
• Eston, R. G. Effect of stride length on symptoms of exerciseinduced muscle damage during a repeated bout of downhill running / R. G. Eston, A. B. Lemmey, P. McHugh, C. Byrne, S. E. Walsh / Scand J Med Sci Sports. – 2000. – 10(4). – P. 199-204.
• Li, F. Correlation of eccentric strength, reactive strength, and leg stiffness with running economy in well-trained distance runners / F. li, R. U. Newton, Y. Shi, D. Sutton, H. Ding // The Journal of Strength & Conditioning Research. – 2021. – T. 35, № 6. – P. 1491-1499. – DOI:10.15.19/SC.0000000000003446.
• Nishikawa, K. C. Basic science and clinical use of eccentric contractions: history and uncertainties / K. C. Nishikawa, S. L. Lindstedt, P. C. LaStayo // Journal of Sport and Health Science. – 2018. – T. 7, № 3. – P. 265-274. – DOI: 10.1016/j.jshs.2018.06.002.
• Shaw, A. J. The effcacy of downhill running as a method to enhance running economy in trained distance runners / A. J. Shaw, S. A. Ingham, J. P. Folland. / Eur J Sport Sci. – 2018. – 18(5). – P. 630-638.
• Shenkman, B. S. Chronic effects of low-frequency low-intensity electrical stimulation of stretched human muscle / B. S. Shenkman, E. V. Lyubaeva, D. V. Popov // J. Acta Astronautica, Pergamon Press Ltd. (United Kingdom) – 2007. – № 60. – P. 505-511.
• Tam, N. Running economy: neuromuscular and joint-stiffness contributions in trained runners / N. Tam, R. Tucker, J. Santos-Concejero, D. Prins, R. P. Lamberts // International Journal of Sport Physiology and Performance. – 2019. – T. 14, № 1. – P. 16-22. – DOI: 10.1123/ijspp.2018-0151.
• Toyomura, J. Effcacy of downhill running training for improving muscular and aerobic performances/ J. Toyomura, H. Mori, K. Tayashiki, M. Yamamoto, H. Kanehisa, S. Maeo / Appl Physiol Nutr Metab. – 2018. – 43(4). – P. 403-410.
• Vernillo, G. Biomechanics and physiology of uphill and downhill running / G. Vernillo, M. Giandolini, W. B. Edwards, J. B. Morin, P. Samozino, N. Horvais, et al. / Sports Med. – 2017. – 47(4). – P. 615-629.
• Wells, M. D. Effect of downhill running grade on lower extremity loading in female distance runners/ M. D. Wells, D. C. Dickin, J. Popp, H. Wang / Sports Biomech. – 2018. – 1. – P. 1-9.