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Littérature scientifique sur le sujet « Ultra Trail du Mont Blanc »

Auteur : Grafiati

Publié le 13 avril 2023

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Articles de revues sur le sujet "Ultra Trail du Mont Blanc"

Varesco, Giorgio, Frederic Sabater-Pastor, Guillaume Y. Millet et Vianney Rozand. « Age-related performance at the Ultra-Trail du Mont-Blanc® ». Movement & ; Sport Sciences - Science & ; Motricité, n^o 104 (2019) : 13–19. http://dx.doi.org/10.1051/sm/2019015.

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Some of the effects of aging and inactivity can be confounded. Master athletes are an interesting model to investigate human aging as they are free from the deleterious effects of inactivity. The aim of the present study was to analyze the number of male finishers and their performance across age at the Ultra-Trail du Mont-Blanc® (UTMB®, 170 km, 10 000 m of elevation gain) and two shorter races organized during the same event, Courmayeur-Champex-Chamonix (CCC®, 101 km, 6100 m) and Orsières-Champex-Chamonix (OCC, 55 km, 3500 m). Eighty percent of the finishers were aged between 23 and 49 years when considering the three races together. Top 10 average speed progressively decreased with age independently of the distance of the race. For every competition, average speed for the Top 10 decreased by 10% between 23–39 yr and 40–49 yr, then by 20% per decade. Future interventional studies should investigate the physiological factors (e.g. neuromuscular fatigue) associated with the age-related decline in ultra-trail running performance.

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Skinner, Sarah, Elie Nader, Emeric Stauffer, Mélanie Robert, Camille Boisson, Agnès Cibiel, Clément Foschia et al. « Differential impacts of trail and ultra-trail running on cytokine profiles : An observational study ». Clinical Hemorheology and Microcirculation 78, n^o 3 (3 août 2021) : 301–10. http://dx.doi.org/10.3233/ch-211121.

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BACKGROUND: Endurance running events are known to cause inflammation and result in increased cytokine production. However, the effects of ultramarathons on cytokine profiles are not well characterized. OBJECTIVE: The aim of this study was to describe and compare the effects of a trail (40 km) race and an ultra-trail (171 km) race on leukocyte concentrations and cytokine profiles. METHODS: The study was conducted during the Ultra-Trail du Mont Blanc® ultra-marathon running event, and included 11 runners who completed the 40 km trail run and 12 runners who completed the 171 km ultra-trail. Blood samples were taken before and after the races. RESULTS: Leukocyte concentrations significantly increased after both races. Circulating levels of IL-6, IL-1β, MCP-1, and IFN-γ were significantly higher after the longer race compared to the shorter race. Furthermore, while both races resulted in significant increases in IL-6 and IL-8, only the longer race resulted in significant increases in MIP-1β, IL-7, IL-17a, and IL-4. CONCLUSIONS: These results illustrate that a 171 km ultra-trail race results in greater modulations in cytokine profiles than a traditional trail race.

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Corbí-Santamaría, Pedro, Alba Herrero-Molleda, Juan García-López, Daniel Boullosa et Vicente García-Tormo. « Variable Pacing Is Associated with Performance during the OCC® Ultra-Trail du Mont-Blanc® (2017–2021) ». International Journal of Environmental Research and Public Health 20, n^o 4 (13 février 2023) : 3297. http://dx.doi.org/10.3390/ijerph20043297.

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The current evidence suggests that pacing may not be affected by performance level or sex in trail-running races as may occur in road running races. However, the previous studies included races of >100 km. Therefore, we aimed to verify the influence of performance level and sex on pacing in the last four (2017, 2018, 2019, and 2021) editions of a shorter (56.3 km) ultra-trail running race (i.e., Orsières–Champex–Chamonix; OCC®) that maintained the same race profile. The mean finishing time for the 5656 participants was 10 h 20 min 33 s ± 2 h 01 min 19 s. Pacing variability (CV%) was higher in high-level participants, thus showing a greater ability to adapt their pace to the race profile than low-level runners. Males also had a higher pacing variability than females although the effect sizes were small. Based on the current findings, we may recommend for non-elite OCC® participants to adapt their pace to the race profile with a slower pace during uphills and a faster pace during downhills. Further studies including participants’ experience are necessary to confirm the effectiveness of this suggestion in trail-running races of variable distances.

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Rochoy, Michaël, Julien Six, Jonathan Favre, Nicolas Lagrange, Jean-Marc Lefebvre, Jean-Charles Rollier et Julien Girard. « Does hip or knee joint replacement decrease chances to complete an ultra-trail race ? Study in participants at the Ultra-Trail du Mont Blanc® ». Orthopaedics & ; Traumatology : Surgery & ; Research 106, n^o 8 (décembre 2020) : 1539–44. http://dx.doi.org/10.1016/j.otsr.2020.07.011.

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Suter, Daniel, Caio Victor Sousa, Lee Hill, Volker Scheer, Pantelis Theo Nikolaidis et Beat Knechtle. « Even Pacing Is Associated with Faster Finishing Times in Ultramarathon Distance Trail Running—The “Ultra-Trail du Mont Blanc” 2008–2019 ». International Journal of Environmental Research and Public Health 17, n^o 19 (27 septembre 2020) : 7074. http://dx.doi.org/10.3390/ijerph17197074.

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In recent years, there has been an increasing number of investigations analyzing the effects of sex, performance level, and age on pacing in various running disciplines. However, little is known about the impact of those factors on pacing strategies in ultramarathon trail running. This study investigated the effects of age, sex, and performance level on pacing in the UTMB® (Ultra-trail du Mont Blanc) and aimed to verify previous findings obtained in the research on other running disciplines and other ultramarathon races. Data from the UTMB® from 2008 to 2019 for 13,829 race results (12,681 men and 1148 women) were analyzed. A general linear model (two-way analysis of variance (ANOVA)) was applied to identify a sex, age group, and interaction effect in pace average and pace variation. A univariate model (one-way ANOVA) was used to identify a sex effect for age, pace average, and pace variation for the fastest men and women. In our study, pace average and a steadier pace were positively correlated. Even pacing throughout the UTMB® correlated with faster finishing times. The average pace depended significantly on sex and age group. When considering the top five athletes in each age group, sex and age group also had significant effects on pace variation. The fastest women were older than the fastest men, and the fastest men were faster than the fastest women. Women had a higher pace variation than men. In male competitors, younger age may be advantageous for a successful finish of the UTMB®. Faster male runners seemed to be younger in ultramarathon trail running with large changes in altitude when compared to other distances and terrains.

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Robert, Mélanie, Emeric Stauffer, Elie Nader, Sarah Skinner, Camille Boisson, Agnes Cibiel, Léonard Feasson et al. « Impact of Trail Running Races on Blood Viscosity and Its Determinants : Effects of Distance ». International Journal of Molecular Sciences 21, n^o 22 (12 novembre 2020) : 8531. http://dx.doi.org/10.3390/ijms21228531.

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Blood rheology is a key determinant of tissue perfusion at rest and during exercise. The present study investigated the effects of race distance on hematological, blood rheological, and red blood cell (RBC) senescence parameters. Eleven runners participated in the Martigny–Combes à Chamonix 40 km race (MCC, elevation gain: 2300 m) and 12 others in the Ultra-Trail du Mont Blanc (UTMB, 171 km, elevation gain: 10,000 m). Blood samples were collected before and after the races. After the UTMB, the percentage of RBC phosphatidylserine (PS) exposure was not affected while RBC CD235a levels decreased and RBC-derived microparticles increased. In contrast, after the MCC, RBC PS exposure increased, while RBC CD235a and RBC-derived microparticles levels were not affected. The free hemoglobin and hemolysis rate did not change during the races. RBC aggregation and blood viscosity at moderate shear rates increased after the MCC. RBC deformability, blood viscosity at a high shear rate, and hematocrit decreased after the UTMB but not after the MCC. Our results indicate that blood rheology behavior is different between a 40 km and a 171 km mountain race. The low blood viscosity after the ultra-marathon might facilitate blood flow to the muscles and optimize aerobic performance.

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Poletti, Catherine, et Michel Poletti. « The North Face Ultra-Trail du tour du Mont-Blanc : plus qu'un simple événement sportif, une véritable aventure humaine et éco-responsable ! » Les Cahiers de l'INSEP 37, n^o 1 (2006) : 309–23. http://dx.doi.org/10.3406/insep.2006.1943.

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Rochoy, Michaël, Julien Six, Jonathan Favre, Nicolas Lagrange, Jean-Marc Lefebvre, Jean-Charles Rollier et Julien Girard. « L’arthroplastie de la hanche ou du genou diminue-t-elle les chances de terminer un ultra-trail ? Étude parmi les participants à l’Ultra-Trail du Mont Blanc® ». Revue de Chirurgie Orthopédique et Traumatologique 106, n^o 8 (décembre 2020) : 978–83. http://dx.doi.org/10.1016/j.rcot.2020.10.029.

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Hurdiel, Rémy, Thierry Pezé, Johanna Daugherty, Julien Girard, Mathias Poussel, Laurence Poletti, Patrick Basset et Denis Theunynck. « Combined effects of sleep deprivation and strenuous exercise on cognitive performances during The North Face® Ultra Trail du Mont Blanc® (UTMB®) ». Journal of Sports Sciences 33, n^o 7 (21 octobre 2014) : 670–74. http://dx.doi.org/10.1080/02640414.2014.960883.

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Gergelé, L., S. Baillieul, C. Mariat, E. Cavalier et G. Millet. « Agression rénale aiguë au décours de l’Ultra-Trail du Mont-Blanc ». Néphrologie & ; Thérapeutique 9, n^o 5 (septembre 2013) : 327–28. http://dx.doi.org/10.1016/j.nephro.2013.07.027.

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Plus de sources

Thèses sur le sujet "Ultra Trail du Mont Blanc"

Mashal, Mohammad Shafiq. « Développement et validation d'une méthode HPLC-MS/HRMS pour le criblage d'AINS dans la salive et le sang capillaire : application à l'étude de la prévalence des AINS dans l'ultratrail ». Electronic Thesis or Diss., Lyon 1, 2022. https://n2t.net/ark:/47881/m63n2397.

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Les anti-inflammatoires non stéroidiens (AINS) sont l’un des médicaments les plus utilisés dans le monde, accessibles sur ordonnances ou en vente libre. Plusieurs articles ont fait état d’une forte consommation d’AINS par des coureurs pendant les ultratrails. Plusieurs études montrent qu’environ 50% des coureurs utillisent des AINS sans ordonnance médicale, sans forcément connaître leurs effets indésirables et leur toxicité. A ce jour, seulement des données basées sur des questionnaires ont été rapportées sur la prévalence des AINS chez les ultratrailers. Or, en raison de la méconnaissance des coureurs concernant les AINS, l’utilisation du questionnaire peut entraîner des résultats faux positifs ou faux négatifs. Dans cette étude, nous avons étudié la prévalence des AINS chez les utratrailers via des prélèvements de salive et sang capillaire. Des protocoles de préparation d’échantillon et une méthode LC-MS/HRMS ont été développés puis validés pour 19 AINS dans la salive et pour 18 AINS dans le sang capillaire. La méthode a été appliquée avec succès sur des échantillons collectés auprès de participants de l’Ultratrail du Mont Blanc® (UTMB®) 2021. Les résultats ont montré une prévalence des AINS supérieure dans les prélèvements de sang capillaire (46,6%) que dans les prélèvements salivaires (18,5%) ainsi qu’à partir des données du questionnaire (13,8%). En conclusion, ce travail est le premier rapportant l’identification et la quantification d’autant d’AINS dans la salive et le sang capillaire. De plus, l’étude menée lors de l’UTMB® 2021 a montré que la recherche d’AINS dans le sang capillaire est le moyen le plus pertinent pour étudier la prévalence dans l’ultratrail
Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the most used drugs worldwide accessible through medical prescription or over-the-counter (OTC). Several published articles have reported a high consumption of NSAIDs by runners during ultratrail. Pain relief and prevention are the main reasons for these drugs consumption by runners. Several studies reported that around 50% runners used NSAIDs without medical prescription, these data show that half of runner may have low information or even lack of information about NSAIDs adverse effects. Up to date, only questionnaire-based data reported about NSAIDs prevalence by the runners. Therefore, using questionnaire may not provide the right information and leads to false positive or false negative results. In this study, we used oral fluid (OF) and dried blood spots (DBS), as biological samples for the study of NSAIDs consumption prevalence by the runners. Sample preparation workflows and a LC-MS/HRMS analytical method were developed and validated according to European Medicines Agency guideline for 19 and 18 different NSAIDs in OF and DBS, respectively. The method was successfully applied on OF and DBS samples collected from Ultramarathon du Mont Blanc® 2021. Results showed a higher prevalence of NSAIDs using DBS (46.6%) than OF (18.5%) and questionnaire (13.8%). To conclude, this work is the first one that reported a LC-MS/HRMS method for identification and quantification of as many NSAIDs in oral fluid and dried blood spots. Moreover, the prospective study conducted on UTMB® 2021 showed that the analysis of drugs directly in DBS is the most relevant tool to determine the prevalence in ultratrail events

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Livres sur le sujet "Ultra Trail du Mont Blanc"

Race That Changed Running : The Inside Story of the Ultra Trail du Mont Blanc. Helvetiq, RedCut Sarl, 2023.

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Jones, Kingsley. Trail Running : Chamonix and the Mont Blanc Region. Cicerone Press, 2016.

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Morisset, Christophe. L'Ultra-trail du Mont-Blanc, ma victoire sur la lombalgie. Coëtquen Editions, 2017.

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Hodges, Andy. Trekking the Giants' Trail : Alta Via 1 Through the Italian Pennine Alps : Beneath Mont Blanc, the Matterhorn and Monte Rosa. Cicerone Press, 2020.

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Hodges, Andy. Trekking the Giants' Trail : Alta Via 1 Through the Italian Pennine Alps : Beneath Mont Blanc, the Matterhorn and Monte Rosa. Cicerone Press, 2020.

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