FEATURES OF ADAPTATION TO INTENSIVE PHYSICAL LOAD OF SKILLED CYCLISTS SPECIALIZING IN MOUNTAIN BIKE
Keywords:сyclists, mountain bike, working capacity, adaptation, physical activity, working capacity.
Objective of the study was to identify the features of the adaptation of the neuromuscular apparatus and vegetative functions to physical activity of progressively increasing power and the mechanisms for maintaining the performance of qualified cyclists specializing in mountain biking.
Methods and structure of the study. The work was attended by five cyclists of CMS and MS qualifications, specializing in mountain biking (MTB). As a model testing load, a standard stepwise test was used, performed to “failure”. The test load was performed on an ELITE bike machine, REAL-TURBO-MUIN model (Italy).
Results and conclusions. This study shows that, along with additional activation of presumably fast muscle fibers at a power of 75-80% max, an effective mechanism for maintaining the special performance of qualified cyclists is the level of intermuscular coordination, which provides synergism in the work of the thigh and lower leg muscles with a further increase in pedaling power.
Aulik I.V. Opredeleniye fizicheskoy rabotosposobnosti v klinike i sporte [Determination of physical performance in the clinic and sports]. 2nd ed., rev., sup.. Moscow: Meditsina, 1990. 191 p.
Voronova A.A., Voronov A.V., Kvashuk P.V. Opredeleniye metodami elektromiografii myshechnykh grupp, vliyayushchikh na rezultat v skorostnom sportivnom skalolazanii [Determination of muscle groups influencing the result in high-speed sport climbing by electromyography methods]. Teoriya i praktika fizicheskoy kultury. 2019. No. 12. pp. 24-26.
Chwalbinska-Moneta J., Kaciuba-Uscilko H., Krysztofiak H., Ziemba A., Krzeminski K., Kruk B., Nazar K. Relationship between EMG blood lactate, and plasma catecholamine thresholds during graded exercise in men. J Physiol Pharmacol. 1998. Vol. 49. pp. 33-41.
Hug F., Faucher M., Kipson N., Jammes Y. EMG signs of neuromuscular fatigue related to the ventilatory threshold during cycling exercise. Clin Physiol Funct Imaging. 2003. Vol. 23. pp. 208-214.
Jorge M., Hull M. Analysis of EMG measurements during bicycle pedalling. – J Biomech. 1986. Vol. 19. pp. 683-694.
Lucia A., Sanchez O., Carvajal A., Chicharro J. Analysis of the aerobic-anaerobic transition in elite cyclists during incremental exercise with the use of electromyography. Br J Sports Med. 1999. Vol. 33. pp. 178-185.
Moritani T., deVries H.A. Re-examination of the relationship between the surface integrated electromyogram (iEMG) and force of isometric contraction. Am J Phys Med. 1978. Vol. 57. pp. 263-277.
Nagata A., Muro M., Moritani T., Yoshida T. Anaerobic threshold determination by blood lactate and myoelectric signals. Jpn J Physiol. 1981. Vol. 31. pp. 585-597.
Vanhatalo A., Black M.I., DiMenna F.J., Blackwellet J.R. et al. The mechanistic bases of the power-time relationship: muscle metabolic responses and relationships to muscle fibre type. Journal of Physiology. 2016. Vol. 594. pp. 1-17.
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