Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches
Background: The influence of homeostatically regulated physiological processes, including cardiorespiratory fitness (VO2max), on the response to physical stressors such as acclimatisation and marching, remains understudied. We aimed to investigate the effects of summer and winter acclimatisation and...
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| Format: | Article |
| Language: | English |
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Society of Medical Biochemists of Serbia, Belgrade
2024-01-01
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| Series: | Journal of Medical Biochemistry |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1452-8258/2024/1452-82582401072P.pdf |
| _version_ | 1797319591462961152 |
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| author | Pešić Deniel Đukić Mirjana M. Stanojević Ivan Živkovć Vladimir Bolevich Sergey Bolevich Stefani Jakovljević Vladimir |
| author_facet | Pešić Deniel Đukić Mirjana M. Stanojević Ivan Živkovć Vladimir Bolevich Sergey Bolevich Stefani Jakovljević Vladimir |
| author_sort | Pešić Deniel |
| collection | DOAJ |
| description | Background: The influence of homeostatically regulated physiological processes, including cardiorespiratory fitness (VO2max), on the response to physical stressors such as acclimatisation and marching, remains understudied. We aimed to investigate the effects of summer and winter acclimatisation and marching on cortisol levels and blood lactate, to gain insight into the role of these physiological processes in the stress response. Methods: Two groups of young Europeans, classified as poor (PCF; n=9) and good physical condition (GCF; n=21), based on a VO2MAX threshold of 40 mL O2/ kg/min, underwent 2-h March (6-7 km/h) in winter (5˚C) and summer (32˚C). Commercial tests, UniCel DxI Access Cortisol assay and EKF Biosen Clinic/GP assay were used for cortisol and lactate blood measurements (morning samples and those taken immediately after marches), respectively. Results: Basal cortisol levels were significantly higher at 5°C than at 32°C (PCF group: P=0.0079; cortisol dropped after the March at 5°C in both groups, but increased at 32°C only in PCF. Basal lactate levels were higher at 32°C only in the GCF group (compared to PCF, P=0.0014) and post-marching (compared to basal values, P=0.0002). Conclusion: Cold exposure elicits a more significant stress response, based on higher basal cortisol levels, in individuals with worse physical fitness. Anaerobe metabolism prevails in participants with better physical fitness exposed to high ambient temperature based on increased basal and post-marching lactate levels. The study is significant for individual training/performance optimisation as it indicates the association between physiological stress responses and individual physical fitness levels. |
| first_indexed | 2024-03-08T04:10:11Z |
| format | Article |
| id | doaj.art-02896f041b7141068d2ff0dae9e7d569 |
| institution | Directory Open Access Journal |
| issn | 1452-8258 1452-8266 |
| language | English |
| last_indexed | 2024-03-08T04:10:11Z |
| publishDate | 2024-01-01 |
| publisher | Society of Medical Biochemists of Serbia, Belgrade |
| record_format | Article |
| series | Journal of Medical Biochemistry |
| spelling | doaj.art-02896f041b7141068d2ff0dae9e7d5692024-02-08T22:37:02ZengSociety of Medical Biochemists of Serbia, BelgradeJournal of Medical Biochemistry1452-82581452-82662024-01-01431728510.5937/jomb0-443691452-82582401072PCardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marchesPešić Deniel0Đukić Mirjana M.1https://orcid.org/0000-0003-0177-1205Stanojević Ivan2https://orcid.org/0000-0003-1293-8779Živkovć Vladimir3Bolevich Sergey4https://orcid.org/0000-0002-1574-477XBolevich Stefani5Jakovljević Vladimir6https://orcid.org/0000-0002-0071-8376Military Medical Academy, Institute of Hygiene, Department of Exercise Physiology, Belgrade, SerbiaUniversity of Belgrade, Faculty of Pharmacy, Department of Toxicology, Belgrade, SerbiaMilitary Medical Academy, Institute of Medical Research, Belgrade, SerbiaUniversity of Kragujevac, Faculty of Medical Sciences, Department of Physiology, Kragujevac, SerbiaFirst Moscow State Medical University I. M. Sechenov, Department of Pharmacology, Moscow, RussiaFirst Moscow State Medical University I. M. Sechenov, Department of Pharmacology, Moscow, RussiaUniversity of Kragujevac, Faculty of Medical Sciences, Department of Physiology, Kragujevac, SerbiaBackground: The influence of homeostatically regulated physiological processes, including cardiorespiratory fitness (VO2max), on the response to physical stressors such as acclimatisation and marching, remains understudied. We aimed to investigate the effects of summer and winter acclimatisation and marching on cortisol levels and blood lactate, to gain insight into the role of these physiological processes in the stress response. Methods: Two groups of young Europeans, classified as poor (PCF; n=9) and good physical condition (GCF; n=21), based on a VO2MAX threshold of 40 mL O2/ kg/min, underwent 2-h March (6-7 km/h) in winter (5˚C) and summer (32˚C). Commercial tests, UniCel DxI Access Cortisol assay and EKF Biosen Clinic/GP assay were used for cortisol and lactate blood measurements (morning samples and those taken immediately after marches), respectively. Results: Basal cortisol levels were significantly higher at 5°C than at 32°C (PCF group: P=0.0079; cortisol dropped after the March at 5°C in both groups, but increased at 32°C only in PCF. Basal lactate levels were higher at 32°C only in the GCF group (compared to PCF, P=0.0014) and post-marching (compared to basal values, P=0.0002). Conclusion: Cold exposure elicits a more significant stress response, based on higher basal cortisol levels, in individuals with worse physical fitness. Anaerobe metabolism prevails in participants with better physical fitness exposed to high ambient temperature based on increased basal and post-marching lactate levels. The study is significant for individual training/performance optimisation as it indicates the association between physiological stress responses and individual physical fitness levels.https://scindeks-clanci.ceon.rs/data/pdf/1452-8258/2024/1452-82582401072P.pdfacclimatisationcardiorespiratory fitnesscate cholaminescory cyclecortisolglycolysisgluconeogenesislactatemarchingphysical activitythermoregulationvo2max |
| spellingShingle | Pešić Deniel Đukić Mirjana M. Stanojević Ivan Živkovć Vladimir Bolevich Sergey Bolevich Stefani Jakovljević Vladimir Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches Journal of Medical Biochemistry acclimatisation cardiorespiratory fitness cate cholamines cory cycle cortisol glycolysis gluconeogenesis lactate marching physical activity thermoregulation vo2max |
| title | Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| title_full | Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| title_fullStr | Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| title_full_unstemmed | Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| title_short | Cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| title_sort | cardiorespiratory fitness mediates cortisol and lactate responses to winter and summer marches |
| topic | acclimatisation cardiorespiratory fitness cate cholamines cory cycle cortisol glycolysis gluconeogenesis lactate marching physical activity thermoregulation vo2max |
| url | https://scindeks-clanci.ceon.rs/data/pdf/1452-8258/2024/1452-82582401072P.pdf |
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