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https://www.readbyqxmd.com/read/28421004/neurosensory-and-cognitive-modifications-in-europe-s-toughest-randoraid-competition-the-transpyr%C3%A3-n%C3%A3-a-extreme-study
#1
Alessandro Tonacci, Simona Mrakic-Sposta, Kristian Ujka, Francesco Sansone, Alice Ferrisi, Guido Giardini, Raffaele Conte, Lorenza Pratali
Introduction: Given the wide proliferation of ultra-long endurance races, it is important to understand the physiological response of the athletes to improve their safety. We evaluated the cognitive and neurosensory effects on ultra-endurance athletes during the Transpyrénéa (866 Km, 65,000 m positive slope), held on the French Pyrenees. Materials and Methods: 40 athletes were enrolled (age 43.8 ± 8.8 years; 36 males). Olfactory and cognitive tests were performed before the race (T0, n = 40), at 166 kms (T1, n = 28), at 418 kms (T2, n = 20), and after the race (T3, 866 kms, n = 13)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28415084/p260right-cardiac-chambers-remodeling-in-marathon-and-ultra-trail-athletes-detected-by-speckle-tracking-echocardiography
#2
K Ujka, R M Bruno, B Catuzzo, L Bastiani, A Tonacci, G D'angelo, S Mrakic-Sposta, A Vezzoli, G Giardini, L Pratali
Background: Strenuous and chronic exercise training can have detrimental effects on cardiac morphology and function. Our aim was to evaluate the cardiac adaptation between 2 different specialties' endurance athletes: marathon runners (M) and ultra-trailers (UT). Methods: 47 M (age 45±7, men 32; training: 18 (9-53) years*days/week), 41 UT (age 42±9, men 38, training: 30 (15-66) years*days/week) were submitted in rest condition to conventional 2D echocardiography and Speckle-Tracking echo (STE) (Beyond Diogenes 2...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28394719/effects-of-strength-explosive-and-plyometric-training-on-energy-cost-of-running-in-ultra-endurance-athletes
#3
Nicola Giovanelli, Paolo Taboga, Enrico Rejc, Stefano Lazzer
The aim of the present study was to evaluate the effects of a 12-week home-based strength, explosive and plyometric (SEP) training on the cost of running (Cr) in well-trained ultra-marathoners and to assess the main mechanical parameters affecting changes in Cr. Twenty-five male runners (38.2 ± 7.1 years; body mass index: 23.0 ± 1.1 kg·m(-2); V˙O2max: 55.4 ± 4.0 mlO2·kg(-1)·min(-1)) were divided into an exercise (EG = 13) and control group (CG = 12). Before and after a 12-week SEP training, Cr, spring-mass model parameters at four speeds (8, 10, 12, 14 km·h(-1)) were calculated and maximal muscle power (MMP) of the lower limbs was measured...
April 10, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28387545/abstracts-for-the-4th-annual-congress-on-medicine-science-in-ultra-endurance-sports-may-30-2017-denver-colorado
#4
(no author information available yet)
No abstract text is available yet for this article.
April 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28347463/level-of-minerals-and-trace-elements-in-the-urine-of-the-participants-of-mountain-ultra-marathon-race
#5
Jasna Jablan, Suzana Inić, Hagen Stosnach, Maja Ortner Hadžiabdić, Lovorka Vujić, Ana-Marija Domijan
The aim of the present study was to explore impact of endurance exercise on urinary level of minerals and trace elements as well as on some oxidative stress and biochemical parameters. Urine samples were collected from participants (n=21) of mountain ultra-marathon race (53km; Medvednica, Zagreb, Croatia), before (baseline value), immediately after, 12h and 24h after the race. In urine samples level of minerals (Ca, P, K and Na) and trace elements (Se, Zn, Mn, Cu, Fe and Co) were assessed using the bench top Total reflection X-ray Fluorescence (TXRF) spectrometer...
May 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28322630/energy-macronutrient-and-water-intake-during-a-mountain-ultramarathon-event-the-influence-of-distance
#6
Sonia Martinez, Antoni Aguilo, Lluis Rodas, Leticia Lozano, Carlos Moreno, Pedro Tauler
Adequate dietary strategies are essential for the successful participation in ultra-endurance races. The aim of this study was to evaluate and compare the energy and water intakes of participants during three different mountain ultra-endurance runs. The study took place at the "Ultra Mallorca Serra de Tramuntana" (Mallorca, Spain), an ultra-endurance mountain event with runners participating either in a 44-km (Marathon, n = 51), a 67-km (Trail, n = 109) or a 112-km (Ultra, n = 53) run competition. Participants in the study answered a questionnaire focused on the nutritional intake within an hour after finishing the competition...
March 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28303338/blood-glucose-kinetics-and-physiological-changes-in-a-type-1-diabetic-finisher-of-the-ultraman-triathlon-a-case-study
#7
Christopher W Bach, Daniel A Baur, William S Hyder, Michael J Ormsbee
PURPOSE: To investigate the blood glucose kinetics and physiological effects experienced by a type 1 diabetic (T1D) finisher of a 3-day, multi-stage ultra endurance triathlon consisting of a 10 km swim and 144.8 km bike (stage 1), a 275.4 km bike (stage 2), and an 84.4 km run (stage 3). METHODS: The athlete self-monitored blood glucose (SMBG) levels via fingerstick blood draw and hand-held glucometer. Researchers evaluated blood glucose kinetics via a continuous glucose monitoring device...
March 16, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28295487/sperm-dna-fragmentation-as-a-result-of-ultra-endurance-exercise-training-in-male-athletes
#8
D Vaamonde, C Algar-Santacruz, A Abbasi, J M García-Manso
Intensive sports practice seems to exert negative effects on semen parameters; in order to assess these effects, the objective of this study was to assess semen, including DNA fragmentation, and hormone parameters in elite triathletes. Twelve high-level triathletes preparing for a National Triathlon Championship participated in the study. The qualitative sperm parameters analysed were volume, sperm count, motility, morphology and DNA fragmentation; when needed, additional testing was performed. Assessed hormones were testosterone (T), cortisol (C) and testosterone-cortisol ratio (T/C)...
March 15, 2017: Andrologia
https://www.readbyqxmd.com/read/28282421/comparison-of-vitality-states-of-finishers-and-withdrawers-in-trail-running-an-enactive-and-phenomenological-perspective
#9
Nadège Rochat, Denis Hauw, Roberta Antonini Philippe, Fabienne Crettaz von Roten, Ludovic Seifert
Studies on ultra-endurance suggest that during the races, athletes typically experience three vitality states (i.e., preservation, loss, and revival) at the phenomenological level. Nevertheless, how these states contribute to the management and outcome of performance remains unclear. The aim of this study was to determine whether and how the vitality states experienced by runners and their evolution during a trail race can be used to distinguish finishers from withdrawers. From an enactive and phenomenological framework, we processed enactive interviews and blog posts of race narratives...
2017: PloS One
https://www.readbyqxmd.com/read/28257712/the-effects-of-a-36-hour-mixed-task-ultraendurance-race-on-mucosal-immunity-markers-and-pulmonary-function
#10
David Bellar, Kellie A Murphy, Ritvik Aithal, Greggory R Davis, Tim Piper
OBJECTIVE: The present study was conducted to assess the changes in mucosal immunity and pulmonary function among participants in a 36-hour mixed task ultraendurance race. METHODS: Thirteen of the 20 race participants volunteered for the investigation (age 34±5 y). The event consisted of a mixture of aerobic, strong man, and military-style exercise. Participants had a pulmonary function test and gave a finger stick capillary blood sample and unstimulated saliva samples both before the event and upon dropout or completion...
March 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28229566/bioenergetics-and-psychological-profile-of-an-ultra-endurance-walker
#11
Anna Pedrinolla, Giovanni Li Volti, Fabio Galvano, Federico Schena, Valentina Perciavalle, Donatella Di Corrado
BACKGROUND: Ultra endurance walking provides athletes with significant physiological and psychological challenges. In this study ultra endurance walking races are intended as events where the participants have to cover the largest distance within a given time, usually 24, 36, 48 hours, or longer, keeping the pause time within 5% of the total walking time. The aim of the study was to evaluate the metabolic, bioenergetics, and psychological characteristics of a world record ultra endurance walker during three different ultra endurance events characterized by different durations (36h, 48h and 70h)...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28221755/multilevel-ultrafast-flexible-nanoscale-nonvolatile-hybrid-graphene-oxide-titanium-oxide-memories
#12
V Karthik Nagareddy, Matthew D Barnes, Federico Zipoli, Khue T Lai, Arseny M Alexeev, Monica Felicia Craciun, C David Wright
Graphene oxide (GO) resistive memories offer the promise of low-cost environmentally sustainable fabrication, high mechanical flexibility and high optical transparency, making them ideally suited to future flexible and transparent electronics applications. However, the dimensional and temporal scalability of GO memories, i.e., how small they can be made and how fast they can be switched, is an area that has received scant attention. Moreover, a plethora of GO resistive switching characteristics and mechanisms has been reported in the literature, sometimes leading to a confusing and conflicting picture...
March 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28197103/increases-in-brain-1-h-mr-glutamine-and-glutamate-signals-following-acute-exhaustive-endurance-exercise-in-the-rat
#13
Maciej Świątkiewicz, Michał Fiedorowicz, Jarosław Orzeł, Marlena Wełniak-Kamińska, Piotr Bogorodzki, Józef Langfort, Paweł Grieb
Objective: Proton magnetic resonance spectroscopy ((1)H-MRS) in ultra-high magnetic field can be used for non-invasive quantitative assessment of brain glutamate (Glu) and glutamine (Gln) in vivo. Glu, the main excitatory neurotransmitter in the central nervous system, is efficiently recycled between synapses and presynaptic terminals through Glu-Gln cycle which involves glutamine synthase confined to astrocytes, and uses 60-80% of energy in the resting human and rat brain. During voluntary or involuntary exercise many brain areas are significantly activated, which certainly intensifies Glu-Gln cycle...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28114830/substance-use-and-misuse-in-a-mountain-ultramarathon-new-insight-into-ultrarunners-population
#14
Sandra Didier, Jean-Charles Vauthier, Nicolas Gambier, Pierre Renaud, Bruno Chenuel, Mathias Poussel
Endurance and ultra-endurance events have become increasingly popular. The aim of our study was to explore the use of medication among endurance runners participating in the 2014 Infernal Trail des Vosges. Among the 389 runners engaged, 297 (76.3%) completed a specific questionnaire dealing with substance use/misuse. Our results show a 27% (before the race) and 18% (during the race) prevalence of substance use. The two major classes of substances used were non-steroidal anti-inflammatory drugs (NSAIDs; 9.8%) and painkillers (6...
April 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28076989/improvement-of-patient-eligibility-with-the-use-of-new-generation-endografts-for-the-treatment-of-abdominal-aortic-aneurysms-a-comparison-study-among-currently-used-endografts-and-literature-review
#15
REVIEW
Nikolaos Kontopodis, George Papadopoulos, Nikolaos Galanakis, Dimitrios Tsetis, Christos V Ioannou
BACKGROUND: Newer generation devices have attempted to accommodate a wider range of aortoiliac anatomies offering endovascular aneurysm repair (EVAR) to more patients with abdominal aortic aneurysms (AAAs). We aim to examine the anatomic suitability for the ultra-low profile Ovation endograft in our AAA patients and to compare them with other contemporary devices. METHODS: 158 consecutive AAA patients treated with EVAR or open surgical repair (OSR) were tested for EVAR eligibility according to the most commonly used endografts' instructions for use...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28018241/master-athletes-are-extending-the-limits-of-human-endurance
#16
REVIEW
Romuald Lepers, Paul J Stapley
The increased participation of master athletes (i.e., >40 years old) in endurance and ultra-endurance events (>6 h duration) over the past few decades has been accompanied by an improvement in their performances at a much faster rate than their younger counterparts. Aging does however result in a decrease in overall endurance performance. Such age-related declines in performance depend upon the modes of locomotion, event duration, and gender of the participant. For example, smaller age-related declines in cycling performance than in running and swimming have been documented...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27967268/association-between-energy-balance-and-metabolic-hormone-suppression-during-ultra-endurance-exercise
#17
Bjoern Geesmann, Jenna C Gibbs, Joachim Mester, Karsten Koehler
Ultra-endurance athletes often accumulate an energy deficit when engaging in ultra-endurance exercise, and upon completion of the exercise, they exhibit endocrine changes that are reminiscent of starvation. However, it remains unclear whether these endocrine changes are a result of the exercise per se or secondary to the energy deficit, and more importantly, whether these changes can be attenuated by increased dietary intake. Our goal was to assess the relationship between changes in key metabolic hormones following ultra-endurance exercise and measures of energy balance...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27935427/short-term-heat-acclimation-prior-to-a-multi-day-desert-ultra-marathon-improves-physiological-and-psychological-responses-without-compromising-immune-status
#18
Ashley G B Willmott, Mark Hayes, Kirsty A M Waldock, Rebecca L Relf, Emily R Watkins, Carl A James, Oliver R Gibson, Nicholas J Smeeton, Alan J Richardson, Peter W Watt, Neil S Maxwell
Multistage, ultra-endurance events in hot, humid conditions necessitate thermal adaptation, often achieved through short term heat acclimation (STHA), to improve performance by reducing thermoregulatory strain and perceptions of heat stress. This study investigated the physiological, perceptual and immunological responses to STHA prior to the Marathon des Sables. Eight athletes (age 42 ± 4 years and body mass 81.9 ± 15.0 kg) completed 4 days of controlled hyperthermia STHA (60 min·day(‒1), 45°C and 30% relative humidity)...
December 9, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27923330/the-influence-of-race-length-on-arterial-compliance-following-an-ultra-endurance-marathon
#19
Alis Bonsignore, Shannon S D Bredin, Holly Wollmann, Barb Morrison, Andrew Jeklin, Lauren Buschmann, Josh Robertson, Elizabeth Jean Buckler, Duncan McGuinty, Mark S Rice, Darren E R Warburton
There is inconclusive evidence concerning the effects of routine participation in ultra-endurance events on cardiovascular disease (CVD) risk. Arterial compliance is a reliable, non-invasive, and effective tool for evaluating CVD risk. The purpose of this research was to examine if race length influences acute changes in arterial compliance following an ultra-marathon event. A total of 46 ultra-marathon runners were recruited including 21 participants (39.8 ± 8.3 years, 6 females) in the 80-km event and 25 participants (43...
May 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/27916119/plasmonic-nanoshells-enhanced-laser-desorption-ionization-mass-spectrometry-for-detection-of-serum-metabolites
#20
Xiang Wei, Zhonghui Liu, Xiulong Jin, Lin Huang, Deepanjali Dattatray Gurav, Xuming Sun, Baohong Liu, Jian Ye, Kun Qian
Laser desorption/ionization mass spectrometry (LDI MS)-based small metabolites detection is fundamentally important for the clinic prognoses and diagnoses. Plasmonic materials have been applied as efficient substrates for LDI MS of these molecules. However, there is no clear understanding of the mechanism of using plasmonic materials for enhanced LDI MS of small metabolites, thus restricting their application for real case serum samples. In this work, we report the use of plasmonic nanoshells for enhanced LDI MS detection of small analytes...
January 15, 2017: Analytica Chimica Acta
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