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Bartolomé I, Siquier-Coll J, Pérez-Quintero M, Robles-Gil MC, Grijota FJ, Muñoz D, Maynar-Mariño M. 3-Week passive acclimation to extreme environmental heat (100± 3 °C) in dry sauna increases physical and physiological performance among young semi-professional football players. J Therm Biol 2021; 100:103048. [PMID: 34503795 DOI: 10.1016/j.jtherbio.2021.103048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/10/2021] [Accepted: 06/26/2021] [Indexed: 10/21/2022]
Abstract
This manuscript aims to evaluate the influence of a novel passive heat acclimation program among human participants in the physical performance, as well as in several physiological parameters. 36 male football players were acclimated using a dry sauna bath to extreme hot (100 ± 3 °C), performing a total of nine sauna sessions with a weekly frequency of three sessions. The players were randomly into the sauna group (SG; n = 18; age: 20.69 ± 2.09 years) and the control group (CG; n = 18; age: 20.23 ± 1.98 years). All participants performed maximal effort test until exhaustion as well as hamstring flexibility test before and after the acclimation program. Anthropometric, respiratory, circulatory, hematological and physiological variables were evaluated at the beginning and at the end of the survey. Statistical analysis consisted of a Mann-Whitney U test to determine differences between groups at the beginning and at the end of the survey and a Wilcoxon test for paired samples to compare the differences for each group separately. Additionally, size effects of the pre-post acclimation changes were calculated. After the acclimation program SG participants experienced a diminution in body weight (p < 0.01), body mass index (p < 0.01), body fat (p < 0.05) and fat percentage (p < 0.05) decreased. Hamstring flexibility (p < 0.05) and work capacity (p < 0.05) increased. External basal temperature decreased (p < 0.05) as well as post-exercise systolic and diastolic blood pressures (p < 0.05). Finally, maximal oxygen uptake (ml Kg-1 min-1) (p < 0.05), maximal minute ventilation (p < 0.05) and maximal breath frequency (p < 0.05) increased at the end of the intervention. There were no significant changes in the CG in any variable. Favorable adaptations have been observed in this survey, suggesting a beneficial effect of extreme heat acclimation on physical performance. Several of the observed responses seem interesting for sport performance and health promotion as well. However, this is a novel, extreme protocol which requires further research.
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Affiliation(s)
- I Bartolomé
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - J Siquier-Coll
- Movement, Brain and Health Research Group (MOBhE), Center of Higher Education Alberta Giménez (Comillas Pontifical University), Palma de Mallorca, Balearic Islands, Spain.
| | - M Pérez-Quintero
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - M C Robles-Gil
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - F J Grijota
- Faculty of Language and Education, University of Nebrija, Campus La Berzosa, Calle del Hostal, 28248, Hoyo de Manzanares, Madrid, Spain
| | - D Muñoz
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - M Maynar-Mariño
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
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Maynar M, Grijota FJ, Siquier-Coll J, Bartolome I, Robles MC, Muñoz D. Correction to: Erythrocyte concentrations of chromium, copper, manganese, molybdenum, selenium and zinc in subjects with different physical training levels. J Int Soc Sports Nutr 2021; 18:30. [PMID: 33853630 PMCID: PMC8045260 DOI: 10.1186/s12970-021-00428-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- M Maynar
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - F J Grijota
- Faculty of Language and Education, Antonio de Nebrija University, Madrid, Spain
| | - J Siquier-Coll
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - I Bartolome
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - M C Robles
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - D Muñoz
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain.
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Perez-Quintero M, Siquier-Coll J, Bartolomé I, Robles-Gil MC, Muñoz D, Maynar-Mariño M. Three weeks of passive and intervallic heat at high temperatures (100±2 °C) in a sauna improve acclimation to external heat (42±2 °C) in untrained males. J Therm Biol 2021; 96:102837. [PMID: 33627275 DOI: 10.1016/j.jtherbio.2021.102837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 12/14/2020] [Accepted: 01/01/2021] [Indexed: 12/28/2022]
Abstract
Currently, the effect of passive heat acclimation on aerobic performance is still controversial. Therefore, this study aimed to observe the effect of passive and intervallic exposure to high temperatures (100 ± 2 °C) in untrained males. Forty healthy untrained men participated in this investigation. They were randomised into a Control Group (CG; n = 18) and an Experimental Group (EG; n = 22). Both groups performed maximum incremental tests until exhaustion in normothermia (GXT1; 22 ± 2 °C), and 48h afterwards, in hyperthermia (GXT2; 42 ± 2 °C). The EG performed 9 sessions of intervallic exposure to heat (100 ± 2 °C) over 3 weeks. Subsequently, both groups performed two maximal incremental trials in normothermia (GXT3; 22 ± 2 °C) and 48h later, in hyperthermia (GXT4; 42 ± 2 °C). In each test, the maximal ergospirometric parameters and the aerobic (VT1), anaerobic (VT2) and recovery ventilatory thresholds were recorded. The Wilcoxon Test was used for intra-group comparisons and the Mann-Whitney U for inter-group comparisons. There were improvements in absolute VO2max (p = 0.049), W (p = 0.005) and O2pulse (p = 0.006) in hyperthermia. In VT1 there was an increase in W (p = 0.046), in VO2 in absolute (p = 0.025) and relative (p = 0.013) values, O2pulse (p = 0.006) and VE (p = 0.028) in hyperthermia. While W increased in hyperthermia (p = 0.022) at VT2. The results suggest that passive and intervallic acclimation at high temperatures improves performance in hyperthermia. This protocol could be implemented in athletes when they have to compete in hot environments.
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Affiliation(s)
- M Perez-Quintero
- Department of Physiology. School of Sport Sciences, University of Extremadura, Spain
| | - J Siquier-Coll
- Department of Physiology. School of Sport Sciences, University of Extremadura, Spain; Movement, Brain and Health Research Group (MOBhE), Center of Higher Education Alberta Giménez (Comillas Pontifical University), Palma de Mallorca, Balearic Islands, Spain.
| | - I Bartolomé
- Department of Physiology. School of Sport Sciences, University of Extremadura, Spain
| | - M C Robles-Gil
- Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport. Sport Sciences Faculty. University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology. School of Sport Sciences, University of Extremadura, Spain
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Maynar M, Grijota FJ, Siquier-Coll J, Bartolome I, Robles MC, Muñoz D. Erythrocyte concentrations of chromium, copper, manganese, molybdenum, selenium and zinc in subjects with different physical training levels. J Int Soc Sports Nutr 2020; 17:35. [PMID: 32646441 PMCID: PMC7346401 DOI: 10.1186/s12970-020-00367-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/02/2020] [Indexed: 12/19/2022] Open
Abstract
Background The aim of the present study was to determine changes occurring in the erythrocyte concentrations of chromium (Cr), copper (Cu), manganese (Mn), molybdenum (Mo), selenium (Se) and zinc (Zn) in male subjects with different training levels living in the same region (Spain). Methods Thirty sedentary subjects (24.34 ± 3.02 years) formed the control group (CG); 24 moderately trained (4–7 h/week) subjects (23.53 ± 1.85 years) formed the group with a moderate degree of training (MTG) and 22 professional cyclists (23.29 ± 2.73 years), who performed more than 20 h/week of training, formed the high-level training group (HTG). Erythrocyte samples were collected from all subjects in fasting conditions, washed and frozen at − 80 °C until analysis. Erythrocyte analysis of trace elements was performed by inductively coupled plasma mass spectrometry (ICP-MS). Results The results showed that there was a statistically significant lower erythrocyte concentration of Cu, Mn, Mo and Zn in the MTG and HTG than CG. Se was only significantly lower in HTG than CG. The correlation analysis indicates that this change was correlated with training in the case of Cu, Mn, Se and Zn. All results are expressed in μg/g Hb. Conclusions We can conclude that physical training produces a decrease in erythrocyte concentrations of Cu, Mn, Se and Zn, which can cause a decrement in athletes’ performance given the importance of these elements. For this reason, erythrocyte monitoring during the season would seem to be advisable to avoid negative effects on performance.
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Affiliation(s)
- M Maynar
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - F J Grijota
- School of Education, University of Extremadura, University Avenue, s/n, 10003, Cáceres, Spain
| | - J Siquier-Coll
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - I Bartolome
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - M C Robles
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - D Muñoz
- School of Sport Sciences, University of Extremadura, University Avenue, Avenida de la Universidad s/n, 10003, Cáceres, Spain.
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Siquier-Coll J, Bartolomé I, Perez-Quintero M, Grijota FJ, Muñoz D, Maynar-Mariño M. Effects of exposure to high temperatures on serum, urine and sweat concentrations of iron and copper. J Therm Biol 2020; 89:102536. [PMID: 32364981 DOI: 10.1016/j.jtherbio.2020.102536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/30/2020] [Accepted: 02/09/2020] [Indexed: 11/19/2022]
Abstract
The objective of this research was to determine the acute effect of a maximum test until exhaustion in normothermia and hyperthermia, and after repeated exposure to heat at high temperatures on the homeostasis of Fe and Cu. The sample was composed of twenty-nine male university students. The participants were divided into a control group (CG) and an experimental group (EG). All of them underwent an incremental test until exhaustion in normothermia and hyperthermia before and after the repeated exposure of EG to heat at high temperatures, consisting of 9 heat acclimatisation sessions in the sauna. Samples of urine and blood were taken before and after each test. Additionally, sweat samples were collected in the hyperthermia test. The samples were frozen at -80 °C for further analysis by ICP-MS. None of the metal concentrations in serum were affected by hyperthermia or exposure to heat. Urinary Fe increased in CG in the hyperthermia test before Heat exposure at High Temperature (HEHT)(p < 0.05) and in both groups after HEHT (p < 0.05). In EG there was an increase in the urinary excretion of Cu after HEHT (p < 0.01) in both trials. Fe suffered a decrease in sweat in EG after exposure to heat (p < 0.05). The concentrations of Fe and Cu in serum were not affected by acute exercise and exposure to high temperatures. However, there was a decrease in excretion of Fe in sweat due to HEHT, and an increase in urinary excretion in both. Therefore, we think that in conditions of high temperatures for long periods of time, attention should be paid to the body levels of these metals.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain.
| | - I Bartolomé
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - M Perez-Quintero
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - F J Grijota
- Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
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Siquier-Coll J, Bartolomé I, Pérez-Quintero M, Muñoz D, Robles MC, Maynar-Mariño M. Influence of a high-temperature programme on serum, urinary and sweat levels of selenium and zinc. J Therm Biol 2020; 88:102492. [PMID: 32125980 DOI: 10.1016/j.jtherbio.2019.102492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/28/2019] [Accepted: 12/23/2019] [Indexed: 01/05/2023]
Abstract
INTRODUCTION The effect of hyperthermia on the antioxidant system in the human organism is well known. AIM The objective of this study was to observe the effects of heat on the concentration of Se and Zn, elements related to antioxidant systems. METHODS Twenty-nine subjects voluntarily participated in this study. They were divided into a control group (CG; n = 14) and an experimental group (EG; n = 15). All of them underwent two incremental tests until exhaustion in normothermia (22 °C, 20-40%RH) and hyperthermia (42 °C, 20-40%RH). EG experienced nine sessions of repeated heat exposure at high temperatures (100 °C, 20%RH) for three weeks (HEHT). After the intervention, the initial measurements were repeated. Urine and blood samples were collected before and after each test. Additionally, sweat samples were collected after tests in hyperthermia. RESULTS There were no significant changes in serum. An increase in the elimination of Zn and Se in EG was observed in urine after HEHT (p < .05). The elimination of Zn by sweating decreased after HEHT in EG (p < .05). CONCLUSIONS Exposure to heat at high temperatures increases the urinary excretion of Se and Zn.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology. School of Sport Sciences. University of Extremadura, Spain.
| | - I Bartolomé
- Department of Physiology. School of Sport Sciences. University of Extremadura, Spain
| | - M Pérez-Quintero
- Department of Physiology. School of Sport Sciences. University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M C Robles
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology. School of Sport Sciences. University of Extremadura, Spain
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Siquier-Coll J, Bartolomé I, Pérez-Quintero M, Muñoz D, Robles MC, Maynar-Mariño M. Effect of exposure to high temperatures in the excretion of cadmium and lead. J Therm Biol 2020; 89:102545. [PMID: 32364986 DOI: 10.1016/j.jtherbio.2020.102545] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 01/13/2023]
Abstract
OBJECTIVE This study aims to observe the effect on urine and sweat excretion levels of cadmium (Cd) and lead (Pb) in healthy men in a maximum incremental test until exhaustion and repeated exposure to heat. METHODS twenty-nine adult men divided into control group (CG; n = 14) and experimental group (EG; n = 15) performing two maximum tests until exhaustion in normothermia (22 °C) and hyperthermia (42 °C). EG experienced 9 sessions of heat exposure at high temperatures (100 °C) (HEHT). After the nine sessions, the initial tests were repeated in both groups. Urine samples were collected before and after each test. After the hyperthermia tests, sweat samples were gathered. RESULTS Urinary Cd increased after initial tests in GC and in hyperthermia in EG (p < 0.05). Urinary excretion of Pb rose after HEHT (p < 0.05). Pb in sweat was higher in EG than in CG after HEHT (p < 0.05). CONCLUSION Heat exercise and constant exposure to heat can be a valid method to increase the excretion of toxic metals.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - I Bartolomé
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain.
| | - M Pérez-Quintero
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M C Robles
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
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Siquier-Coll J, Bartolomé I, Perez-Quintero M, Grijota FJ, Arroyo J, Muñoz D, Maynar-Mariño M. Serum, erythrocyte and urinary concentrations of iron, copper, selenium and zinc do not change during an incremental test to exhaustion in either normothermic or hyperthermic conditions. J Therm Biol 2019; 86:102425. [PMID: 31789222 DOI: 10.1016/j.jtherbio.2019.102425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 09/11/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
AIM The aim of this study was to evaluate the effect of the performance of an incremental exercise test until exhaustion in normothermic and hyperthermic conditions on serum, erythrocyte and urine concentrations of Iron (Fe), Copper (Cu), Selenium (Se) and Zinc (Zn). METHODS Nineteen adult males (age: 22.58 ± 1.06 years) performed two maximum incremental exercise tests on a cycloergometer in normothermia (22 ± 2 °C) and hyperthermia (42±2 °C) separated by 48 h. Urine, serum and erythrocyte samples were collected before and after each test. RESULTS Serum Se (p < 0.01) and Cu (p < 0.05) levels were altered after each test, but the significance disappeared with the correction for haematocrit. The rest of the values did not undergo alterations in either condition. CONCLUSIONS It seems that a higher stimulus is necessary to obtain changes in these minerals. The study reveals the need to correct serum concentrations concerning possible changes in these volumes after an acute effort.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain.
| | - I Bartolomé
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - M Perez-Quintero
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - F J Grijota
- Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, Spain
| | - J Arroyo
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
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Siquier-Coll J, Bartolomé I, Pérez-Quintero M, Grijota FJ, Muñoz D, Maynar-Mariño M. Effect of heat exposure and physical exercise until exhaustion in normothermic and hyperthermic conditions on serum, sweat and urinary concentrations of magnesium and phosphorus. J Therm Biol 2019; 84:176-184. [PMID: 31466751 DOI: 10.1016/j.jtherbio.2019.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/01/2019] [Accepted: 07/01/2019] [Indexed: 10/26/2022]
Abstract
AIM The aim of this survey was to ascertain the difference in the levels of Magnesium (Mg) and Phosphorus (P) after an exercise test in normothermia and hyperthermia before and after heat acclimation in comparison to their respective pre-test values. METHODS Twenty-nine male university students were divided into an Experimental Group (EG) (n = 15) and a Control Group (CG) (n = 14). All of them voluntarily participated in this investigation. Both groups performed an incremental test until exhaustion on a cycloergometer in normothermia (22 °C) and hyperthermia (42 °C). EG underwent 9 sessions of heat acclimation (100 °C) in a sauna (Harvia C105S Logix Combi Control; 3-15 W; Finland). Once the experimental period was completed, all initial measurements were carried out again under identical conditions. Urine and blood samples were obtained before and after each trial. Sweat samples were collected at the end of every test performed in hyperthermia. The samples were frozen at -80 °C until further analysis by ICP-MS. RESULTS Lower seric Mg levels were observed in both groups at the end of pre-acclimation tests. After acclimation, only EG experimented a decrease of Mg in serum after testing (p < .01). The urinary excretion was unaffected in the pre-acclimated period, but EG experimented an increase in Mg after trials in the post-acclimation evaluation (p < .01). Mg sweat loss decreased significantly after heat acclimation (p < .05). P did not undergo changes, except in its urinary excretion, which was elevated after the normothermia trial in the post-acclimation period (p < .05). CONCLUSIONS It seems that exercise in hyperthermia altered Mg status but not P homeostasis. Additionally, heat acclimation reduces Mg losses in sweat while increasing its loss in urine. Thus, Mg supplementation should be considered in unacclimated and acclimated subjects if physical exercise is going to be performed in hyperthermic conditions.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain.
| | - I Bartolomé
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - M Pérez-Quintero
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - F J Grijota
- Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
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Siquier-Coll J, Bartolomé I, Perez-Quintero M, Grijota FJ, Robles MC, Muñoz D, Maynar-Mariño M. Influence of a physical exercise until exhaustion in normothermic and hyperthermic conditions on serum, erythrocyte and urinary concentrations of magnesium and phosphorus. J Therm Biol 2019; 80:1-6. [PMID: 30784472 DOI: 10.1016/j.jtherbio.2018.12.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/15/2018] [Accepted: 12/24/2018] [Indexed: 01/28/2023]
Abstract
AIM The aim of this study was to evaluate the effect of the performance of a maximal exercise test until exhaustion in normothermic and hyperthermic conditions on body concentrations of magnesium (Mg) and phosphorus (P). METHODS 19 adult males (age: 22.58 ± 1.05 years) performed two maximum incremental exercise tests on a cycloergometer separated by 48 h. The first was performed in normothermia (22 ± 2 °C) and the second in hyperthermic conditions induced with a sauna (42 ± 2 °C). Blood and urine samples were taken before and after each test. RESULTS The tests in hyperthermia did not produce ergospirometric alterations or a noticeable cardiovascular drift. Serum Mg concentrations underwent a reduction after the stress test in hyperthermia (p > 0.05) but not in normothermia. Nevertheless, urinary and erythrocyte concentrations of Mg, and urinary, erythrocyte and serum concentrations of P did not undergo alterations in either conditions. CONCLUSIONS It seems that exercise in hyperthermic conditions induces a tissue redistribution of Mg in the body, a fact which was not observed in normothermic conditions.
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Affiliation(s)
- J Siquier-Coll
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain.
| | - I Bartolomé
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - M Perez-Quintero
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
| | - F J Grijota
- Department of Didactics of Musical, Plastic and Corporal Expression, School of Teacher Training, University of Extremadura, Spain
| | - M C Robles
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - D Muñoz
- Department of Physical Education and Sport, Sport Sciences Faculty, University of Extremadura, Cáceres, Spain
| | - M Maynar-Mariño
- Department of Physiology, School of Sport Sciences, University of Extremadura, Spain
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