Methodology for determining the threshold zones of energy supply by the dynamics of heart rate and lactate in running step tests to failure

ˑ: 

PhD, Professor N.S. Zagurskiy1
Dr. Hab., Professor V.I. Mikhalev1
PhD, Associate Professor Ya.S. Romanova1
1Siberian State University of Physical Education and Sports, Omsk

Objective of the study was to improve the efficiency of biathletes' training process management based on the assessment of aerobic (AMT) and anaerobic metabolism (AnMT) thresholds in running step tests to failure.
Methods and structure of the study. In scientific work, the Conconi test was used, which was performed on a 400-meter athletics track. Athletes carried out continuous running with a gradual increase in speed every 200 m, starting from running at a heart rate of 120-130 beats/min.
During the test, the values of heart rate and running speed were continuously recorded. The increase in running speed and heart rate was monitored using Polar vantage NV sports testers. The results were processed using a special computer program Polar Electro Oy. The study involved nine biathletes (Candidate Master of Sports in biathlon). The average age of the subjects is 20 years. The study took place at the SibSUPhE stadium.
Results and conclusions. The average values of heart rate and running speed showed a high correlation at the threshold zones of energy supply. The mean PAO values were 157.2 and 156.9 beats/min in both tests, the correlation coefficient was 0.75. Mean AnMT values were 177.2 and 173.6 beats/min in the Conconi test and lactate test, respectively, with a correlation coefficient of 0.72. The average values of the maximum heart rate were 193.4 and 192.1 beats/min in both tests, the correlation coefficient was 0.93.
Based on the results obtained, it is recommended to regularly perform special load tests to monitor the level of performance of biathletes. Testing data testify to the high information content of the indicators of AMT and AnMT for the purposes of managing the training process and calculating individual intensity zones.

Keywords: Conconi test, lactate testing, aerobic and anaerobic threshold.

References

  1. Golovachev A.I., Kolykhmanov V.I., Shirovkova S.V. Dinamika funktsionalnykh vozmozhnostey sistem energoobespecheniya lyzhnits-gonshchits vysokoy kvalifikatsii, spetsializiruyushchikhsya v razlichnykh vidakh sorevnovatelnoy deyatelnosti [Dynamics of functional capabilities of energy supply systems for highly qualified ski racers specializing in various types of competitive activities]. Vestnik sportivnoy nauki. 2019. No. 3. pp. 8-14.
  2. Kozlov A.V. et al. Metod opredeleniya anaerobnogo poroga po dinamike CHSS v protsesse raboty i vosstanovleniya pri vypolnenii testa narastayushchey moshchnosti do otkaza [Method for determining the anaerobic threshold by the dynamics of heart rate during work and recovery during the test of increasing power to failure]. Fiziologiya cheloveka. 2019. Vol. 45. No. 2. pp. 78-86.
  3. Laktatnyy porog i yego ispolzovaniye dlya upravleniya trenirovochnym protsessom: metodicheskiye rekomendatsii [Lactate threshold and its use to control the training process]. Guidelines. Polishchuk D.A. [ed.]. Kyiv: Abris publ., 1997. Issue 4. 61 p.
  4. Seluyanov V.N. Fiziologicheskiye mekhanizmy i metody opredeleniya aerobnogo i anaerobnogo porogov [Physiological mechanisms and methods for determining aerobic and anaerobic thresholds]. Teoriya i praktika fizicheskoy kultury. 1991. No. 10. pp. 10-18.
  5. Shirkovets E.A. Kontseptsiya anaerobnogo poroga v sportivnoy praktike i kriticheskiy analiz metodov yego opredeleniya [The concept of anaerobic threshold in sports practice and a critical analysis of methods for its determination]. Teoriya i praktika fizicheskoy kultury. 1986. No. 3. pp. 37-40.
  6. Jansen P. CHSS, laktat i trenirovki na vynoslivost [Heart rate, lactate and endurance training]. Murmansk: "Tuloma" publ., 2006. 160 p.
  7. Conconi F. et al. Determination of the anaerobic theshold by a noninvasive field test in runners J. appl. Physiol. 1982.