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Volume 19
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10.3390/ijerph192417028
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Article

Lactate Threshold and Psychomotor Fatigue Threshold in Hot Conditions: Suggestions for Soccer Players Participating in the Qatar World Cup 2022

by
Marek Konefał
1,
Jan Chmura
1,
Małgorzata Charmas
2,
Jadwiga Kotowska
2,
Krzysztof Błażejczyk
3 and
Paweł Chmura
4,*
1
Department of Human Motor Skills, Wrocław University of Health and Sport Sciences, I.J. Paderewskiego 35, 51-612 Wrocław, Poland
2
Department of Physiology and Biochemistry, Faulty of Physical Eucation and Health in Biala Podlaska, Józef Piłsudski University of Physical Education in Warszawa, Akademicka 2, 21-500 Biała Podlaska, Poland
3
Institute of Geography and Spatial Organization, Polish Academy of Sciences, Twarda 51/55, 00-818 Waszawa, Poland
4
Department of Team Games, Wrocław University of Health and Sport Sciences, I.J. Paderewskiego 35, 51-612 Wrocław, Poland
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2022, 19(24), 17028; https://doi.org/10.3390/ijerph192417028
Submission received: 12 November 2022 / Revised: 8 December 2022 / Accepted: 16 December 2022 / Published: 18 December 2022
(This article belongs to the Special Issue Team Sports: Health, Fitness & Performance)
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Abstract

The study aimed at finding relationships between lactate threshold and psychomotor fatigue threshold during incremental exercise in thermo-neutral climate conditions and conditions for the 2022 FIFA World Cup in Qatar simulated in an environmental test chamber. The study included 24 soccer players aged 21.02 ± 3.22 years old. The following procedures were performed: The incremental exercise test to mark lactate concentration—LA (mmol·l−1); Psychomotor test to determine choice reaction time; Designation of the lactate threshold (TLA) and psychomotor fatigue threshold (TPF). Climate conditions: The procedure was performed twice in the climatic chamber: (1) in thermo-neutral conditions—TNC (ambient temperature 20.5 °C and relative air humidity 58.7%), (2) after 7 days—in Qatar conditions—QC (28.5 ± 1.92 °C) and (58.7 ± 8.64%). It was confirmed that the TPF, which reflects the highest efficiency of CNS functioning, occurs at a higher running speed than the TLA. The temperature of 28.5 °C with 58.7% humidity, which is the lower limit of heat stress, causes the psychomotor fatigue threshold to appear at a lower running speed than in thermoneutral conditions. The data recorded in this work may help to understand the specificity of physiological and psychomotor reactions to various climatic conditions.
Keywords: heat stress; soccer; choice reaction time (CRT); lactate concentration; incremental test heat stress; soccer; choice reaction time (CRT); lactate concentration; incremental test

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MDPI and ACS Style

Konefał, M.; Chmura, J.; Charmas, M.; Kotowska, J.; Błażejczyk, K.; Chmura, P. Lactate Threshold and Psychomotor Fatigue Threshold in Hot Conditions: Suggestions for Soccer Players Participating in the Qatar World Cup 2022. Int. J. Environ. Res. Public Health 2022, 19, 17028. https://doi.org/10.3390/ijerph192417028

AMA Style

Konefał M, Chmura J, Charmas M, Kotowska J, Błażejczyk K, Chmura P. Lactate Threshold and Psychomotor Fatigue Threshold in Hot Conditions: Suggestions for Soccer Players Participating in the Qatar World Cup 2022. International Journal of Environmental Research and Public Health. 2022; 19(24):17028. https://doi.org/10.3390/ijerph192417028

Chicago/Turabian Style

Konefał, Marek, Jan Chmura, Małgorzata Charmas, Jadwiga Kotowska, Krzysztof Błażejczyk, and Paweł Chmura. 2022. "Lactate Threshold and Psychomotor Fatigue Threshold in Hot Conditions: Suggestions for Soccer Players Participating in the Qatar World Cup 2022" International Journal of Environmental Research and Public Health 19, no. 24: 17028. https://doi.org/10.3390/ijerph192417028

APA Style

Konefał, M., Chmura, J., Charmas, M., Kotowska, J., Błażejczyk, K., & Chmura, P. (2022). Lactate Threshold and Psychomotor Fatigue Threshold in Hot Conditions: Suggestions for Soccer Players Participating in the Qatar World Cup 2022. International Journal of Environmental Research and Public Health, 19(24), 17028. https://doi.org/10.3390/ijerph192417028

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