PhD R.N. Volodin¹
Dr. Hab., Associate Professor L.V. Tarasova¹
Dr. Hab., Associate Professor V.D. Kryazhev²
PhD, Associate Professor V.M. Skudnov^3
1Branch of Military Academy for Logistics, Penza
²Federal Scientific Center for Physical Education and Sports, Moscow
³Penza State University, Penza

Keywords: student, middle distance running, anaerobic threshold.

Introduction. The anaerobic threshold (AnP) is an important indicator that determines the limit of the intensity of physical activity in middle-distance runners. Non-invasive methods for determining the anaerobic threshold are known, based on the use of the Konkoni test, a 3000 m pace run and regression dependencies between sports performance and AnP [2]. However, for each contingent of athletes, there are features of the dependence "AnP - running time", which affects the accuracy of the evaluation of the studied indicator.
The aim of the study is to substantiate a non-invasive method for determining the anaerobic threshold in qualified student runners based on the results of pedagogical testing.
Methodology and organization of the study. The experiment involved 18 students aged 19 to 23 years, height - 176.2 ± 3.4 cm, weight - 64.1 ± 2.3 kg, having a result in running 1500 m in the range of 3.56,2-4.38.3 min/s. Before the start of the winter competition season in December, athletes were tested on a treadmill - running with a step-increasing speed, which increased from 2.5 to 5.0 m/s by 0.5 m/s every 3 minutes. At the end of each stage, the heart rate (HR) was recorded and capillary blood was taken from the finger to determine the lactate concentration. The anaerobic threshold was estimated based on the Exp-Dmax method [1].
The results of the study and their discussion. The obtained regression dependence (see Figure) allows us to calculate the running speed at the level of the anaerobic threshold using a convenient modified formula:
VAnP = 10.26-0.02×T1500 (m/s) with an error within ± 0.1 m/s.
Conclusions. The convenience of using this method to assess AnP is that in the process of training work, you can always rely on the individual heart rate level associated with the level of the anaerobic threshold. In addition, this method can be successfully applied at the beginning of the preparatory period, in September, to form training groups and select the mode of the upcoming training load, as well as at all stages of the annual training cycle, which allows monitoring the physical condition and management of the training process.

Literature

1. Noninvasive methods for determining the lactate threshold in the preparation of student runners / V.D. Kryazhev, R.N. Volodin, V.B. Soloviev et al. // Bulletin of Sports Science. - 2020. - No. 1. - pp. 36-41.
2. James C. McGehee, Charles J. Tanner and Joseph A., Houmard. A Comparison of Methods for Estimating the Lactate Threshold. Journal of Strength and Conditioning Research, 2005. 19 (3). pp. 553-558.