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Chronic Exposure to Normobaric Hypoxia Increases Testosterone Levels and Testosterone/Cortisol Ratio in Cyclists

Czuba, Miłosz ; Płoszczyca, Kamila ; Kaczmarczyk, Katarzyna ; Langfort, Józef ; Gajda, Robert

International journal of environmental research and public health, 2022-04, Vol.19 (9), p.5246 [Periódico revisado por pares]

Switzerland: MDPI AG

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  • Título:
    Chronic Exposure to Normobaric Hypoxia Increases Testosterone Levels and Testosterone/Cortisol Ratio in Cyclists
  • Autor: Czuba, Miłosz ; Płoszczyca, Kamila ; Kaczmarczyk, Katarzyna ; Langfort, Józef ; Gajda, Robert
  • Assuntos: Altitude ; Athletes ; Blood ; Chronic exposure ; Cortisol ; Erythropoiesis ; Exercise ; Experiments ; Hematology ; Hemoglobin ; Hormones ; Humans ; Hydrocortisone ; Hypoxia ; Laboratories ; Nutrition research ; Oxygen Consumption ; Physiology ; Protein synthesis ; Proteins ; Testosterone ; Training ; Warm up (exercise) ; Workloads
  • É parte de: International journal of environmental research and public health, 2022-04, Vol.19 (9), p.5246
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The aim of this study was to analyze the effects of the “live high, train low” method (LH−TL) and intermittent hypoxic training (IHT) on testosterone (T) and cortisol (C) levels in cyclists. Thirty cyclists participated in the experiment. The LH−TL group (n = 10) was exposed to normobaric hypoxia (FiO2 = 16.3%) for 11−12 h a day and trained in normoxia for 3 weeks. In the IHT group (n = 10), participants followed the IHT routine three times a week for 3 weeks in normobaric hypoxia (FiO2 = 16.3%). The control group (N; n = 10) followed the same training protocol in normoxia. The LH−TL training was found to significantly increase (p < 0.05) T levels and the testosterone/cortisol (T/C) ratio during the experiment. The area under the curve (AUC) calculated for T levels over 4 weeks was significantly (p < 0.05) higher in the LH−TL group, by 25.6%, compared to the N group. The results also indicated a significant correlation (r = 0.53; p < 0.05) between AUC for T levels over 4 weeks and ∆ values of hemoglobin (HGB) in the LH−TL group. Overall, the findings show that LH−TL training at a moderate simulated altitude contributes to an increase in T levels and T/C ratio in athletes, which is a beneficial change stimulating anabolic processes and erythropoiesis.
  • Editor: Switzerland: MDPI AG
  • Idioma: Inglês
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