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Hyldahl RD, Gifford JR, Davidson LE, Hancock CR, Hafen PS, Parcell AC, Mack GW. Physiological assessment of a 16 day, 4385 km ultra-endurance mountain bike race: A case study. Exp Physiol 2024; 109:165-174. [PMID: 38189630 PMCID: PMC10988653 DOI: 10.1113/ep091260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 10/23/2023] [Indexed: 01/09/2024]
Abstract
The Tour Divide (TD) is a 4385 km ultra-endurance bicycle race that follows the continental divide from Canada to Mexico. In this case study, we performed a comprehensive molecular and physiological profile before and after the completion of the TD. Assessments were performed 35 days before the start (Pre-TD) and ∼36 h after the finish (Post-TD). Total energy expenditure was assessed during the first 9 days by doubly labelled water (2 H2 18 O), abdominal and leg tissue volumes via MRI, and graded exercise tests to quantify fitness and substrate preference. Vastus lateralis muscle biopsies were taken to measure mitochondrial function via respirometry, and vascular function was assessed using Doppler ultrasound. The 47-year-old male subject took 16 days 7 h 45 min to complete the route. He rode an average of 16.8 h/day. Neither maximal O2 uptake nor maximal power output changed pre- to post-TD. Measurement of total energy expenditure and dietary recall records suggested maintenance of energy balance, which was supported by the lack of change in body weight. The subject lost both appendicular and trunk fat mass and gained leg lean mass pre- to post-TD. Skeletal muscle mitochondrial and vascular endothelial function decreased pre- to post-TD. Overall, exercise performance was maintained despite reductions in muscle mitochondrial and vascular endothelial function post-TD, suggesting a metabolic reserve in our highly trained athlete.
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Affiliation(s)
| | | | | | - Chad R. Hancock
- Department of Nutrition, Dietetics & Food ScienceBrigham Young UniversityProvoUtahUSA
| | - Paul S. Hafen
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
| | - Allen C. Parcell
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
| | - Gary W. Mack
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
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Borchers J, Merle CL, Schöneborn DD, Lyko LR, Thouet T, Wolfarth B, Kottmann T, Scheibenbogen C, Zimmer J, Diederich S, Bauer K, Sack U, Schmalz G, Ziebolz D, Wüstenfeld J. Salivary Diagnostic for Monitoring Strenuous Exercise-A Pilot Study in a Cohort of Male Ultramarathon Runners. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16110. [PMID: 36498185 PMCID: PMC9737684 DOI: 10.3390/ijerph192316110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Intense physical stress, such as that in ultramarathon running, affects the immune system. For monitoring in sports medicine, non-invasive methods, e.g., salivary analysis, are of interest. This pilot cohort study aimed to assess changes in salivary parameters in response to an ultramarathon. The results were compared to blood parameters. Male, healthy finishers (n = 9, mean age: 48 ± 8.8 years, mean height: 1.8 ± 0.1 m, mean weight: 72.5 ± 7.2 kg, mean BMI: 23.5 ± 1.9 kg/cm²) of a 160 km ultramarathon were included. Saliva and blood samples were collected at three time points: T1 (baseline), T2 (shortly after the ultramarathon) and T3 (after recovery). In saliva, cortisol, testosterone, IL-1β, IL-6, IL-8, IL-10, TNF-α, albumin, IgA, α-amylase, aMMP-8, and neopterin were assessed via ELISA. In blood, cortisol, testosterone, IL-1β, IL-6, IL-8, IL-10, TNF-α, blood cell counts, procalcitonin, CRP, osmolality, albumin, and α-amylase were analyzed. The statistical evaluation comprised longitudinal testing and cross-sectional testing between saliva and blood using ratios of T2 and T3 to baseline values. Various parameters in saliva and blood changed in response to the ultramarathon. Comparing blood and saliva, the longitudinal changes of testosterone (p = 0.02) and α-amylase (p = 0.03) differed significantly. Despite the limitations of the study, it underlines that saliva is an interesting option for comprehensive monitoring in sports medicine and necessitates further studies.
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Affiliation(s)
- Josephin Borchers
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Cordula Leonie Merle
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93053 Regensburg, Germany
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | | | - Lea Ronja Lyko
- Department of Sports Medicine, Charité University Medicine, 10115 Berlin, Germany
| | - Thomas Thouet
- Department of Sports Medicine, Charité University Medicine, 10115 Berlin, Germany
| | - Bernd Wolfarth
- Department of Sports Medicine, Charité University Medicine, 10115 Berlin, Germany
- Department of Sports Medicine, Institute for Applied Scientific Training, 04109 Leipzig, Germany
- Institute of Sports Science, Humboldt University, 10115 Berlin, Germany
| | | | - Carmen Scheibenbogen
- Institute for Medical Immunology, Charité University Medicine, 13353 Berlin, Germany
| | - Jeannot Zimmer
- SYNLAB Medizinisches Versorgungszentrum Berlin GmbH, 10828 Berlin, Germany
| | | | - Katrin Bauer
- Institute of Clinical Immunology, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany
| | - Ulrich Sack
- Institute of Clinical Immunology, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Jan Wüstenfeld
- Department of Sports Medicine, Charité University Medicine, 10115 Berlin, Germany
- Department of Sports Medicine, Institute for Applied Scientific Training, 04109 Leipzig, Germany
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Batista EDS, Ribeiro BLL, Leite Galvão-Coelho N, Almeida RND, Teixeira RV, Silveira JCD, Ferreira ABDM, Mortatti AL. Effects of Training Loads on Stress Tolerance and Mucosal Immunity in High-Intensity Functional Fitness Athletes. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2022:1-10. [PMID: 35416755 DOI: 10.1080/02701367.2021.2011828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 11/21/2021] [Indexed: 06/14/2023]
Abstract
Purpose: This study aimed to analyze the effects of training load on stress tolerance (ST) and secretory immunoglobulin A (SIgA) in male and female high-intensity functional fitness (HIFF) athletes during two different 10 and consecutive weekly training volume loads [higher (week 1) and lower volume (week 2)]. Methods: 14 athletes [7 males: 29.3 (±5.8) years; 86.3 (±8.2) kg and 176.8 (±3.8) cm and 7 females: 32.7 (±4.4) years; 60.0 (±6.7) kg and 162.5 (±5.9) cm] participated. The ST, assessed by Daily Analysis of Life Demand in Athletes questionnaire (DALDA) and Saliva sampling were performed in four time-points (pre (T1) and post (T2) week 1; pre (T3) and post (T4) week 2). Results: Female athletes showed a decrease in ST (symptoms of stress) from 15 T1 to T3 [F(3,36) = 7.184, p˂ 0.001, ηp2 = 0.374], without difference in male athletes (p > .05). There is a significant difference of SIgA concentration [F(3.36) = 3.551; p = .024; ηp2 = 0.228], with a significant decrease in female athletes group in T2 compared to T1 (p = .013) and T4 (p = .023). In addition, the different training volume loads did not impact mucosal immunity in male athletes (p > .05). Conclusion: The current findings suggest that higher HIFF volume results in decreased ST and SIgA concentration in female 20 athletes and a subsequent decrease in training volume loads contributed to restoring these variables.
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Salivary immunity and lower respiratory tract infections in non-elite marathon runners. PLoS One 2018; 13:e0206059. [PMID: 30462646 PMCID: PMC6248899 DOI: 10.1371/journal.pone.0206059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 10/06/2018] [Indexed: 01/19/2023] Open
Abstract
Rationale Respiratory infections are common after strenuous exercise, when salivary immunity may be altered. We aim to investigate changes in salivary immunity after a marathon and its relationship with lower respiratory tract infections (LRTI) in healthy non-elite marathon runners. Methods Forty seven healthy marathon runners (28 males and 19 females) who completed the 42.195 km of the 2016 Barcelona marathon were studied. Saliva and blood samples were collected the day before the marathon and two days after the end of the race. Salivary IgA, antimicrobial proteins (lactoferrin, lysozyme) and chemokines (Groα, Groβ, MCP-1) were determined using ELISA kits in saliva supernatant. Blood biochemistry and haemogram were analyzed in all participants. The presence of LRTI was considered in those runners who reported infectious lower respiratory tract symptoms during a minimum of 3 consecutive days in the 2 weeks after the race. Results Eight participants (17%) presented a LRTI during the 2 weeks of follow-up. Higher lysozyme levels were detected after the race in runners with LRTI when compared with those without infection. A decrease in salivary lysozyme, Groα and Groβ levels after the race were observed in those runners who did not develop a LRTI when compared to basal levels. Salivary Groα levels correlated with basophil blood counts, and salivary lysozyme levels correlated with leukocyte blood counts. Conclusions LRTI are common after a marathon race in non-elite healthy runners. Changes in salivary antimicrobial proteins and chemokines are related to the presence of LRTI and correlate with systemic defense cells, which suggest an important role of salivary immunity in the development of LRTI in non-elite marathon runners.
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